Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and coo...
ICS: 01.040.23 ; 23.120
Geregistreerde Belgische norm
NBN EN 14511-1 2e uitg., mei 2008
Normklasse: D 40
Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en -koeling - Deel 1: Termen en definities Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 1: Termes et définitions Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 1: Terms and definitions
Toelating tot publicatie: 29 januari 2008 Vervangt NBN EN 14511-1 (2004). Deze Europese norm EN 14511-1:2008 heeft de status van een Belgische norm. Deze Europese norm bestaat in drie officiële versies (Duits, Engels, Frans).
Bureau voor Normalisatie Brabançonnelaan 29 B-1000 Brussel België Tel: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be www.nbn.be Bank 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BEB1 BTW: BE 0880.857.592
© NBN 2008
Prijsgroep: 12
ICS: 01.040.23 ; 23.120
norme belge enregistrée
NBN EN 14511-1 2e éd., mai 2008
Indice de classement: D 40
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 1: Termes et définitions Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en -koeling - Deel 1: Termen en definities Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 1: Terms and definitions
Autorisation de publication: 29 janvier 2008 Remplace NBN EN 14511-1 (2004). La présente norme européenne EN 14511-1:2008 a le statut d'une norme belge. La présente norme européenne existe en trois versions officielles (allemand, anglais, français).
Bureau de Normalisation - Avenue de la Brabançonne 29 - 1000 Bruxelles - Belgique Tél: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be www.nbn.be Banque 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BPOT BEB1 TVA: BE 0880.857.592
© NBN 2008
Prix: groupe 12
ICS: 01.040.23 ; 23.120
norme belge enregistrée
NBN EN 14511-1 2e éd., mai 2008
Indice de classement: D 40
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 1: Termes et définitions Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en -koeling - Deel 1: Termen en definities Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 1: Terms and definitions
Autorisation de publication: 29 janvier 2008 Remplace NBN EN 14511-1 (2004). La présente norme européenne EN 14511-1:2008 a le statut d'une norme belge. La présente norme européenne existe en trois versions officielles (allemand, anglais, français).
Bureau de Normalisation - Avenue de la Brabançonne 29 - 1000 Bruxelles - Belgique Tél: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be www.nbn.be Banque 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BPOT BEB1 TVA: BE 0880.857.592
© NBN 2008
Prix: groupe 12
NBN EN 14511-1 (2008)
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14511-1 November 2007
ICS 23.120; 01.040.23
Supersedes EN 14511-1:2004
English Version
Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling Part 1: Terms and definitions Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 1: Termes et définitions
Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen mit elektrisch angetriebenen Verdichtern für die Raumbeheizung und Kühlung - Teil 1: Begriffe
This European Standard was approved by CEN on 13 October 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
© 2007 CEN
All rights of exploitation exploitation in any form and by any means reserved reserved worldwide for CEN national Members.
B-1050 Brussels Brussels
Ref. No. EN 14511-1:2007: E
EN 14511-1:2007 (E)
Contents
NBN EN 14511-1 (2008)
Page
Foreword..............................................................................................................................................................3 1
Scope ......................................................................................................................................................4
2
Terms and definitions ...........................................................................................................................4
3
Classification..........................................................................................................................................9
Index...................................................................................................................................................................11 Bibliography ......................................................................................................................................................13
2
NBN EN 14511-1 (2008)
EN 14511-1:2007 (E)
Foreword This document (EN 14511-1:2007) has been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14511-1:2004. The revised standard takes into account double duct units and multisplit systems. EN 14511 comprises the following parts under the general title " Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling “: -
Part 1: Terms and definitions
-
Part 2: Test conditions
-
Part 3: Test methods
-
Part 4: Requirements
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
3
EN 14511-1:2007 (E)
1
NBN EN 14511-1 (2008)
Scope
This part of EN 14511 specifies the terms and definitions for the rating and performance of air and water cooled air conditioners, liquid chilling packages, air-to-air, water-to-air, air-to-water and water-to-water heat pumps with electrically driven compressors when used for space heating and/or cooling. This European Standard does not specifically apply to heat pumps for sanitary hot water, although certain definitions can be applied to these. This European Standard applies to factory-made units that can be ducted. This standard applies to factory-made liquid chilling packages with integral condensers or for use with remote condensers. This standard applies to factory-made units of either fixed capacity or variable capacity by any means. Packaged units, single split and multisplit systems are covered by this standard. Single duct and double duct units are covered by the standard. In the case of units consisting of several parts, this standard applies only to those designed and supplied as a complete package, except for liquid chilling packages with remote condenser. This standard is primarily intended for water and brine chilling packages but can be used for other liquid subject to agreement. This standard applies to air-to-air air conditioners which evaporate the condensate on the condenser side. The units having their condenser cooled by air and by the evaporation of external additional water are not covered by this standard. This standard does not apply to units using transcritical cycles, e.g. with CO 2 as refrigerant. Installations used for heating and/or cooling of industrial processes are not within the scope of this standard. NOTE 1
Part load testing of units is dealt with in CEN/TS 14825.
NOTE 2
All the symbols given in this text should be used regardless of the language used.
2
Terms and definitions
For the purposes of this document, the following terms and definitions apply. 2.1 air conditioner encased assembly or assemblies designed as a unit to provide delivery of conditioned air to an enclosed space (room for instance) or zone. It includes an electrically operated refrigeration system for cooling and possibly dehumidifying the air. It can have means for heating, circulating, cleaning and humidifying the air. If the unit provides heating by reversing the refrigerating cycle then it is a heat pump 2.2 heat pump encased assembly or assemblies designed as a unit to provide delivery of heat. It includes an electrically operated refrigeration system for heating. It can have means for cooling, circulating, cleaning and dehumidifying the air. The cooling is by means of reversing the refrigerating cycle
4
NBN EN 14511-1 (2008)
EN 14511-1:2007 (E)
2.3 comfort air conditioner or heat pump air conditioner or heat pump to satisfy the requirements of the occupants of the air conditioned room 2.4 close control air conditioner air conditioner to satisfy the requirements of the process carried out in the air conditioned room 2.5 control cabinet air conditioner air conditioner to satisfy the requirements of the control cabinet 2.6 packaged unit factory assembly of components of refrigeration system fixed on a common mounting to form a discrete unit 2.7 single split unit factory assembly of components of refrigeration system fixed on two mountings or more to form a discrete matched functional unit 2.8 single-duct air conditioner air conditioner for spot cooling in which the condenser intake air is introduced from the space containing the unit and discharged outside this space 2.9 double-duct air conditioner air conditioner placed in the conditioned space near a wall, in which the condenser intake air is introduced from the outdoor environment by a small duct and the condenser discharge air is rejected to the outdoor environment by a second small duct 2.10 liquid chilling package factory-made unit designed to cool liquid, using an evaporator, a refrigerant compressor, an integral or remote condenser and appropriate controls. It may have means for heating which can be reversing the refrigerating cycle, like a heat pump 2.11 heat recovery liquid chilling package factory-made liquid chilling package designed for the purpose of chilling liquid and recovering of heat 2.12 heat recovery recovery of heat rejected by the unit(s) whose primary control is in the cooling mode by means of either an additional heat exchanger (e.g. a liquid chiller with an additional condenser) or by transferring the heat through the refrigerating system for use to unit(s) whose primary control remains in the heating mode (e.g. variable refrigerant flow) 2.13 indoor heat exchanger heat exchanger which is designed to transfer heat to the indoor part of the building or to the indoor hot water supplies or to remove heat from these NOTE In the case of an air conditioner or heat pump operating in the cooling mode, this is the evaporator. In the case of an air conditioner or heat pump operating in the heating mode, this is the condenser.
5
EN 14511-1:2007 (E)
NBN EN 14511-1 (2008)
2.14 outdoor heat exchanger heat exchanger which is designed to remove heat from the outdoor ambient environment, or any other available heat source, or to transfer heat to it NOTE In the case of an air conditioner or heat pump operating in the cooling mode, this is the condenser. In the case of an air conditioner heat pump operating in the heating mode, this is the evaporator.
2.15 heat recovery heat exchanger heat exchanger assembly which is designed to transfer heat to the heat recovery medium 2.16 heat transfer medium any medium (water, air, ...) used for the transfer of the heat without change of state EXAMPLES cooled liquid circulating in the evaporator; cooling medium circulating in the condenser; heat recovery medium circulating in the heat recovery heat e xchanger.
2.17 outside air air from the outdoor environment entering the outdoor heat exchanger 2.18 exhaust air air from the air conditioned space entering the outdoor heat exchanger 2.19 recycled air air from the air conditioned space entering the indoor heat exchanger 2.20 outdoor air air from the outdoor environment entering the indoor heat exchanger 2.21 water loop closed circuit of water maintained within a temperature range on which the units in cooling mode reject heat and the units in heating mode take heat 2.22 total cooling capacity P C heat given off from the heat transfer medium to the unit per unit of time, expressed in Watt 2.23 latent cooling capacity P L capacity of the unit for removing latent heat from the evaporator intake air, expressed in Watt 2.24 sensible cooling capacity P S capacity of the unit for removing sensible heat from the evaporator intake air, expressed in Watt 2.25 heating capacity P H heat given off by the unit to the heat transfer medium per unit of time, expressed in Watt
6
NBN EN 14511-1 (2008)
NOTE
EN 14511-1:2007 (E)
If heat is removed from the indoor heat exchanger for defrosting, it is taken into account.
2.26 heat rejection capacity heat removed by the heat transfer medium of the condenser per unit of time, expressed in Watt NOTE
This applies only to heat recovery liquid chilling packages.
2.27 heat recovery capacity heat removed by the heat transfer medium of the heat recovery heat exchanger, per unit of time, expressed in Watt NOTE
This applies only to heat recovery liquid chilling packages.
2.28 total power input P T power input of all components of the unit as delivered, expressed in Watt 2.29 effective power input P E average electrical power input of the unit within the defined interval of time obtained from:
power input for operation of the compressor and any power input for defrosting; power input for all control and safety devices of the unit; and proportional power input of the conveying devices (e.g. fans, pumps) for ensuring the transport of the heat transfer media inside the unit. It is expressed in Watt 2.30 energy efficiency ratio EER ratio of the total cooling capacity to the effective power input of the unit, expressed in Watt/Watt 2.31 sensible heat ratio SHR ratio of the sensible cooling capacity to the total cooling capacity, expressed in Watt/Watt 2.32 coefficient of performance COP ratio of the heating capacity to the effective power input of the unit, expressed in Watt/Watt 2.33 operating range range indicated by the manufacturer and limited by the upper and lower limits of use (e.g. temperatures, air humidity, voltage) within which the unit is deemed to be fit for use and has the characteristics published by the manufacturer 2.34 rating conditions standardised conditions provided for the determination of data which are characteristic for the unit, especially:
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EN 14511-1:2007 (E)
NBN EN 14511-1 (2008)
heating capacity, power input, COP in heating mode; cooling capacity, power input, EER , SHR in cooling mode. 2.35 defrost mode state of the unit in the heating mode where the operation is modified or reversed to defrost the outdoor heat exchanger 2.36 defrost period time for which the unit is in the defrost mode 2.37 operating cycle with defrost cycle consisting of a heating period and a defrost period, from defrost termination to defrost termination 2.38 temperature of saturated vapour at the discharge of the compressor temperature of saturated vapour/bubble point of the refrigerant corresponding to the discharge pressure of the compressor, measured at the compressor/piping connection 2.39 temperature of the liquid refrigerant temperature of the refrigerant measured at the inlet of the expansion device 2.40 glide difference between dew point temperature and bubble point temperature at a given pressure 2.41 brine heat transfer medium that has a freezing point depressed relative to water 2.42 sound power level LW ten times the logarithm to the base 10 of the ratio of the given sound power to the reference sound power -12 expressed in decibels. The reference sound power is 1 pW (10 W) 2.43 standard rating condition mandatory condition that is used for marking and for comparison or certification purposes 2.44 application rating condition rating condition which is mandatory if it falls within the operating range of the unit. Results based on application rating conditions are published by the manufacturer or supplier 2.45 basic multi-split system split system incorporating a single refrigerant circuit, with one or more compressors, multiple indoor units designed for individual operation and one outdoor unit. The system has no more than two steps of control by either two compressors or by compressor unloading and is capable of operating either as an air-conditioner or a heat pump. A system having a variable speed compressor where a fixed combination of indoor units is specified by the manufacturer is also considered as a basic multi-split system
8
NBN EN 14511-1 (2008)
EN 14511-1:2007 (E)
2.46 multiple circuit multi-split system split system incorporating multiple refrigerant circuits, two or more single speed compressors, multiple indoor units and an integrated heat exchanger in a single outdoor unit and is capable of operating either as an air conditioner or a heat pump 2.47 modular multi-split system split system air conditioner or heat pump incorporating a single refrigerant circuit, at least one variable speed compressor or an alternative compressor combination for varying the capacity of the system by three or more steps, multiple indoor units, each of which can be individually controlled, one or more outdoor units and is capable of operating either as an air conditioner or a heat pump 2.48 modular heat recovery multi-split system split system air conditioner or heat pump incorporating a single refrigerant circuit, at least one variable-speed compressor or an alternate compressor combination for varying the capacity of the system by three or more steps, multiple indoor units, each capable of being individually controlled and one or more outdoor units. This system is capable of operating as a heat pump where recovered heat from the indoor units operating in the cooling mode can be transferred to one or more units operating in the heating mode NOTE
This may be achieved by a gas/liquid separator or a third line in the refrigeration circuit.
2.49 rated capacity capacity measured in the standard rating conditions 2.50 system capacity capacity of the system when all outdoor and indoor units are operating in the same mode 2.51 system reduced capacity capacity of the system when some of the indoor units are disconnected 2.52 system capacity ratio ratio of the total stated cooling (heating) capacity of all operating indoor units to the stated cooling (heating) capacity of the outdoor unit at the rating conditions 2.53 heat recovery efficiency HRE ratio of the total capacity of the system (heating plus cooling capacity) to the effective power input when operating in the heat recovery mode 2.54 standard air dry air at 20 °C and at standard barometric pressure of 101,325 kPa, having a mass density of 1,204 kg/m³
3
Classification
The units are denominated in such a way that the heat transfer medium for the outdoor heat exchanger is indicated first, followed by the heat transfer medium for the indoor heat exchanger (see Table 1).
9
EN 14511-1:2007 (E)
NBN EN 14511-1 (2008)
Table 1 — Most common types of units Heat transfer medium Outdoor heat exchanger Indoor heat exchanger Air Air
10
Water
Air
Brine
Air
Air
Water
Water
Water
Brine
Water
Classification Air/air heat pump or air cooled air conditioner Water/air heat pump or water cooled air conditioner Brine/air heat pump or brine cooled air conditioner Air/water heat pump or air cooled liquid chilling package Water/water heat pump or water cooled liquid chilling package Brine/water heat pump or brine cooled chilling package
NBN EN 14511-1 (2008)
EN 14511-1:2007 (E)
Index
2
B
2.1 .................................................. ....................... 4, 5, 6 2.10 .................................................. ............................. 5 2.11 .................................................. ............................. 5 2.12 .................................................. ............................. 5 2.13 .................................................. ............................. 6 2.14 .................................................. ............................. 6 2.15 .................................................. ............................. 6 2.16 .................................................. ............................. 6 2.17 .................................................. ............................. 6 2.18 .................................................. ............................. 6 2.2 .................................................. ........................... 6, 7 2.20 .................................................. ............................. 6 2.21 .................................................. ............................. 6 2.23 .................................................. ............................. 6 2.24 .................................................. ............................. 6 2.25 .................................................. ............................. 7 2.26 .................................................. ............................. 7 2.27 .................................................. ............................. 7 2.28 .................................................. ............................. 7 2.3 .................................................. ....................... 5, 7, 8 2.30 .................................................. ............................. 7 2.31 .................................................. ............................. 7 2.33 .................................................. ............................. 7 2.34 .................................................. ............................. 8 2.35 .................................................. ............................. 8 2.36 .................................................. ............................. 8 2.37 .................................................. ............................. 8 2.38 .................................................. ............................. 8 2.4 .................................................. ....................... 5, 8, 9 2.40 .................................................. ............................. 8 2.41 .................................................. ............................. 8 2.42 .................................................. ............................. 8 2.43 .................................................. ............................. 8 2.44 .................................................. ............................. 8 2.45 .................................................. ............................. 9 2.46 .................................................. ............................. 9 2.47 .................................................. ............................. 9 2.48 .................................................. ............................. 9 2.5 .................................................. ........................... 5, 9 2.50 .................................................. ............................. 9 2.51 .................................................. ............................. 9 2.53 .................................................. ............................. 9 2.6 .................................................. ............................... 5 2.7 .................................................. ............................... 5 2.8 .................................................. ............................... 5 2.9 .................................................. ............................... 5
basic multi-split system ................................................. 8 brine .................................................................... 4, 8, 10
A
air conditioner ............................................. 4, 5, 6, 9, 10 application rating condition........................................... 8 application rating conditions ......................................... 8
C
close control air conditioner..........................................5 coefficient of performance ............................................ 7 comfort air conditioner or heat pump............................5 control cabinet air conditioner.......................................5 D
defrost mode..................................................................8 defrost period ................................................ ................ 8 E
effective power input.................................................7, 9 energy efficiency ratio...................................................7 exhaust air ........................................................ ............. 6 G
glide...............................................................................8 H
heat pump..................... ........................... 4, 5, 6, 8, 9, 10 heat recovery .................................................... . 5, 6, 7, 9 heat recovery capacity...................................................7 heat recovery efficiency ................................................ 9 heat recovery heat exchanger .................................... 6, 7 heat recovery liquid chilling package........................ 5, 7 heat rejection capacity...................................................7 heat transfer medium......................................... 6, 7, 8, 9 I
indoor heat exchanger ....................................... 5, 6, 7, 9 L
latent cooling capacity .................................................6 liquid chilling package ........................................ 4, 5, 10 M
modular heat recovery multi-split system ..................... 9 modular multi-split system............................................9 multiple circuit multi-split system.................................9 O
operating cycle with defrost .......................................... 8 operating range..........................................................7, 8 outdoor air .............................................. ....................... 6 outdoor heat exchanger ......................................... 6, 8, 9 outside air......................................................................6 P
packaged unit ................................................................ 5
11
EN 14511-1:2007 (E)
NBN EN 14511-1 (2008)
R
rated capacity.................................................................9 rating condition..............................................................8 rating conditions ........................................................ 7, 9 recycled air ..................................................... ...............6 S
sensible cooling capacity ...........................................6, 7 sensible heat ratio .......................................................... 7 single split unit ..............................................................5 single-duct air conditioner .............................................5 sound power level ........................................................8 standard air .................................................... ................9 standard rating condition ...........................................8, 9
12
system capacity............................................................. 9 system capacity ratio .................................................... 9 system reduced capacity ............................................... 9 T
temperature of saturated vapour at the discharge of the compressor................................................................ 8 temperature of the liquid refrigerant............................. 8 the refrigerating cycle, like a heat pump .................. 5 total cooling capacity .............................................. 6, 7 total power input......................................................... 7 W
water loop ............................................... ...................... 6
NBN EN 14511-1 (2008)
EN 14511-1:2007 (E)
Bibliography
[1] CEN/TS 14825, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling – Testing and rating at part load conditions
13
ICS: 23.120
Geregistreerde Belgische norm
NBN EN 14511-2 2e uitg., mei 2008
Normklasse: D 40
Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en -koeling - Deel 2: Beproevingsomstandigheden Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 2: Conditions d'essai Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 2: Test conditions
Toelating tot publicatie: 29 januari 2008 Vervangt NBN EN 14511-2 (2004). Deze Europese norm EN 14511-2:2008 heeft de status van een Belgische norm. Deze Europese norm bestaat in drie officiële versies (Duits, Engels, Frans).
Bureau voor Normalisatie Brabançonnelaan 29 B-1000 Brussel België Tel: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be Bank 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BEB1 BTW: BE 0880.857.592
© NBN 2008
Prijsgroep: 14
ICS: 23.120
norme belge enregistrée
NBN EN 14511-2 2e éd., mai 2008
Indice de classement: D 40
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 2: Conditions d'essai Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en -koeling - Deel 2: Beproevingsomstandigheden Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 2: Test conditions
Autorisation de publication: 29 janvier 2008 Remplace NBN EN 14511-2 (2004). La présente norme européenne EN 14511-2:2008 a le statut d'une norme belge. La présente norme européenne existe en trois versions officielles (allemand, anglais, français).
Bureau de Normalisation - Avenue de la Brabançonne 29 - 1000 Bruxelles - Belgique Tél: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be Banque 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BEB1 TVA: BE 0880.857.592
© NBN 2008
Prix: groupe 14
NBN EN 14511-2 (2008)
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14511-2 November 2007
ICS 23.120
Supersedes EN 14511-2:2004
English Version
Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling Part 2: Test conditions Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 2: Conditions d'essai
Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen mit elektrisch angetriebenen Verdichtern für die Raumbeheizung und Kühlung - Teil 2: Prüfbedingungen
This European Standard was approved by CEN on 12 October 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
© 2007 CEN
All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
B-1050 Brussels
Ref. No. EN 14511-2:2007: E
EN 14511-2:2007 (E)
Contents
NBN EN 14511-2 (2008)
Page
Foreword..............................................................................................................................................................3 1
Scope ......................................................................................................................................................4
2
Normative references ............................................................................................................................4
3
Terms and definitions ...........................................................................................................................4
4 4.1 4.2
Test conditions ......................................................................................................................................5 Environmental conditions and electrical power supply requirements ............................................5 Rating conditions...................................................................................................................................5
Annex A.1 A.2 A.2.1 A.2.2 A.2.3 A.2.4 A.2.5 A.2.6 A.3 A.4 A.4.1 A.4.2 A.4.3
A (normative) Energy labelling application .......................................................................................13 General..................................................................................................................................................13 Rating conditions.................................................................................................................................13 General..................................................................................................................................................13 Air-cooled air conditioners (air-to-air conditioners) ........................................................................13 Single-duct air conditioners ...............................................................................................................13 Water-cooled air conditioners (water-to-air conditioners) ..............................................................13 Double duct air conditioners ..............................................................................................................14 Other appliances ..................................................................................................................................14 Test procedure .....................................................................................................................................14 Tolerances permitted on declared values .........................................................................................14 General..................................................................................................................................................14 First testing ..........................................................................................................................................14 Second testing .....................................................................................................................................15
Bibliography ......................................................................................................................................................16
2
NBN EN 14511-2 (2008)
EN 14511-2:2007 (E)
Foreword This document (EN 14511-2:2007) has been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14511-2:2004. EN 14511 comprises the following parts under the general title " Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling “: -
Part 1: Terms and definitions
-
Part 2: Test conditions
-
Part 3: Test methods
-
Part 4: Requirements
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
3
EN 14511-2:2007 (E)
1
NBN EN 14511-2 (2008)
Scope
This part of EN 14511 specifies the test conditions for the rating of air and water cooled air conditioners, liquid chilling packages, air-to-air, water-to-air, air-to-water and water-to-water heat pumps with electrically driven compressors when used for space heating and/or cooling. It also specifies test conditions for heat recovery operation of multisplit systems. This European Standard applies to factory-made units that can be ducted. This standard applies to factory-made liquid chilling packages with integral condensers or for use with remote condensers. This standard applies to factory-made units of either fixed capacity or variable capacity by any means. Packaged units, single split and multisplit systems are covered by this standard. Single duct and double duct units are covered by the standard. In the case of units consisting of several parts, the standard applies only to those designed and supplied as a complete package, except for liquid chilling packages with remote condenser. This standard is primarily intended for water and brine chilling packages but can be used for other liquid subject to agreement. This standard applies to air-to-air air conditioners which evaporate the condensate on the condenser side. The units having their condenser cooled by air and by the evaporation of external additional water are not covered by this standard. This standard does not apply to units using transcritical cycles, e.g. with CO 2 as refrigerant. Installations used for heating and/or cooling of industrial processes are not within the scope of this standard. NOTE
2
Part load testing of units is dealt with in CEN/TS 14825.
Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14511-1:2007, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 1: Terms and definitions EN 14511-3:2007, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 3: Test methods EN 14511-4:2007, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 4: Requirements
3
Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14511-1:2007 apply.
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NBN EN 14511-2 (2008)
4 4.1
EN 14511-2:2007 (E)
Test conditions Environmental conditions and electrical power supply requirements
The tests shall be carried out under the environmental conditions specified in Table 1 or Table 2 depending on the location of the unit. For all units, electrical power voltage and frequency shall be given by the manufacturer. Table 1 — Environmental conditions for units designed for installation indoors Type
Measured quantities
Rating test
Water-to-water units
Dry bulb temperature
15 °C to 30 °C
Air-to-water units with duct connection on the air inlet and outlet side
Dry bulb temperature
15 °C to 30 °C
Dry bulb temperature Wet bulb temperature
As inlet temperatures see Table 9 or Table 10
Dry bulb temperature
15 °C to 30 °C
Dry bulb temperature Wet bulb temperature
As inlet temperatures see Table 5 or Table 6
Dry bulb temperature
15 °C to 30 °C
Dry bulb temperature
As inlet temperatures see Table 3 or Table 4
Air-to-water units without duct connection on the air inlet side Water-to-air units with duct connection on the air inlet and outlet side Water-to-air units without duct connection on the air inlet and outlet side Air-to-air units with duct connection on the indoor air inlet and outlet side Air-to-air units without duct connection on the indoor air inlet and outlet side
Wet bulb temperature
Table 2 — Environmental conditions for units designed for installation outdoors Type Air-to-water units
Measured quantities Dry bulb temperature Wet bulb temperature
Water-to-air units without duct connection on the air inlet side
Dry bulb temperature
Air-to-air units with duct connection on the indoor air inlet and outlet side
Dry bulb temperature
4.2
Wet bulb temperature
Wet bulb temperature
Rating test As inlet temperatures see Table 9 and Table 10 As inlet temperatures see Table 5 and Table 6 As inlet temperatures see Table 3 and Table 4
Rating conditions
For the rating tests, the appropriate test conditions shall be applied in accordance with:
Table 3 for air-to-air units in heating mode;
Table 4 for air-to-air units in cooling mode;
Table 5 for water-to-air units in heating mode;
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NBN EN 14511-2 (2008)
EN 14511-2:2007 (E)
Table 6 for water-to-air units in cooling mode;
Table 7 for water-to-water units in heating mode;
Table 8 for water-to-water units in cooling mode;
Table 9 for air-to-water in heating mode;
Table 10 for air-to-water in cooling mode;
Table 11 for liquid chilling packages with remote condenser;
Table 12 for liquid chilling packages for heat recovery condenser;
Table 13 for basic, multiple circuit and modular air-cooled multisplit systems in the heating mode;
Table 14 for basic, multiple circuit and modular air-cooled multisplit systems in the cooling mode;
Table 15 for modular heat recovery air-cooled multisplit systems;
Table 16 for basic, multiple circuit and modular water-cooled multisplit systems in the heating mode;
Table 17 for basic, multiple circuit and modular water-cooled multisplit systems in the cooling mode.
For units with brine, the test shall be carried out with the brine specified by the manufacturer, see 7.2.1 of EN 14511-4:2007. Table 3 — Air-to air heat pumps - Heating mode
Outside air / recycled air (e.g. window, double duct, Standard rating split units) Conditions Exhaust air / recycled air Exhaust air / outdoor air Outside air / recycled air (e.g. window, double duct, split units) Outside air / recycled air (e.g. window, double duct, Application rating split units) conditions Outside air / recycled air (e.g. window, double duct, split units) Exhaust air / outdoor air Exhaust air / outdoor air
6
Outdoor heat exchanger Indoor heat exchanger Inlet dry bulb Inlet wet bulb Inlet dry bulb Inlet wet bulb temperature temperature temperature temperature °C °C °C °C 7 6 20 15 max
20 20
12 12
20 7
12 6
2
1
20
15 max.
-7
-8
20
15 max.
- 15
-
20
15 max.
20 20
12 12
2 -7
1 -8
NBN EN 14511-2 (2008)
EN 14511-2:2007 (E)
Table 4 — Air-to air heat pumps and air conditioners - Cooling mode
Comfort (outside air / recycled air) (e.g. window, double duct, split units) Comfort (exhaust air / recycled air) Standard rating Comfort (exhaust air / Conditions outdoor air) b, c Single duct Control cabinet Close control Comfort (outside air / recycled air) (e.g. window, double duct, split units) b, c Single duct Application rating Comfort (outside air / conditions recycled air) (e.g. window, double duct, split units) Control cabinet Close control
Outdoor heat exchanger Indoor heat exchanger Inlet dry bulb Inlet wet bulb Inlet dry bulb Inlet wet bulb temperature temperature temperature temperature °C °C °C °C a 35 24 27 19
27
19
27
19
27
19
35
24
35 35 35
24 24 24
35 35 24
24 24 17
21
15
27
19
29
19
35 21
24 15
27 27 46 50 27
19
a
19 24
a
30 19
a
The wet bulb temperature condition is not required when testing units which do not evaporate condensate. When using the calorimeter room method, pressure equilibrium between indoor and outdoor compartments shall be obtained by introducing into indoor compartment, air at the same rating temperature conditions. c The pressure difference between the two compartments of the calorimeter room shall not be greater than 1,25 Pa. This pressure equilibrium can be achieved by using an equalising device or by creating an open space area in the separation partition wall, which dimensions shall be calculated for the maximum airflow of the unit to be tested. If an open space is created in the partition wall, an air sampling device or several temperature sensors shall be used to measure the temperature of the air from the outdoor compartment to the indoor compartment b
Table 5 — Water-to-air heat pumps - Heating mode
Standard rating conditions Application rating conditions
Water Brine Water loop Water Brine Brine
Outdoor heat exchanger Inlet Outlet temperature temperature °C °C a 15 12/ a 0 -3/ a 20 17/ b 10 b 5 b -5
Inlet heat exchanger Inlet dry bulb Inlet wet bulb temperature Temperature °C °C 20 15 max. 20 15 max. 20 15 max. 20 15 max. 20 15 max. 20 15 max.
a
For units designed for heating and cooling mode, the flow rate obtained during the test at standard rating conditions in cooling mode (see Table 6) is used. b The test is performed at the flow rate obtained during the test at t he corresponding standard rating conditions.
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EN 14511-2:2007 (E)
Table 6 — Water-to-air heat pumps and air conditioners - Cooling mode
Standard rating conditions
Application rating conditions a
Comfort Control cabinet Close control Comfort Comfort Close control Close control
Outdoor heat exchanger Inlet Outlet temperature temperature °C °C 30 35 15 20 30 35 a 15 a 40 a 15 a 40
Indoor heat exchanger Inlet dry bulb Inlet wet bulb temperature temperature °C °C 27 19 35 24 24 17 27 19 27 19 21 15 24 17
The test is performed at the water flow rate obtained during the test at the corresponding standard rating conditions.
Table 7 — Water-to-water heat pumps - Heating mode Outdoor heat exchanger Inlet Outlet temperature temperature °C °C
Indoor heat exchanger Inlet Outlet temperature temperature °C °C
a
Water 10 7 40 45 a Brine 0 -3 40 45 a Standard rating Water (for floor heating or 10 7 30 35 conditions similar application) a Brine (for floor heating or 0 -3 30 35 similar application) b b Water 15 45 b b Brine 5 45 b b Application rating Brine (for floor heating or 5 35 conditions similar application) b b Brine -5 45 b b Brine 0 55 b b Water 10 55 a For units designed for heating and cooling mode, the flow rate obtained during the test at standard rating conditions in cooling mode (see Table 8) is used. b The test is performed at the flow rate obtained during the test at th e corresponding standard rating conditions.
Table 8 — Water-to-water heat pumps and liquid chilling packages - Cooling mode Outdoor heat exchanger Inlet Outlet temperature temperature °C °C 30 35
Indoor heat exchanger Inlet Outlet temperature temperature °C °C 12 7
Water to water and brine to water Standard rating Water to brine 30 35 0 conditions Water to water and brine to 30 35 23 water (for floor cooling or similar application) a a Application rating Water to water 15 a a conditions Water to brine 15 a The test is performed at the flow rate obtained during the test at the corresponding standard rating conditions.
8
-5 18
7 -5
NBN EN 14511-2 (2008)
EN 14511-2:2007 (E)
Table 9 — Air-to-water heat pumps - Heating mode Outdoor heat exchanger
Standard rating conditions
Application rating conditions
Indoor heat exchanger
Outdoor air
Inlet dry bulb temperature °C 7
Inlet wet bulb temperature °C 6
Inlet temperature °C 40
Outlet temperature °C 45
Exhaust air
20
12
40
45
7
6
30
35
2
1
-7
-8
- 15
-
2
1
Outdoor air (for floor heating or similar application) Outdoor air (for floor heating or similar application) Outdoor air (for floor heating or similar application) Outdoor air (for floor heating or similar application) Outdoor air Outdoor air Outdoor air Outdoor air Outdoor air
-7 - 15 7 -7
-8 6 -8
a
a
a a a a a a
35 35 35 45 45 45 55 55
a
The test is performed at the flow rate obtained during the test at the corresponding standard rating conditions.
Table 10 — Air-to-water heat pumps and liquid chilling packages - Cooling mode
Standard rating conditions
Application rating conditions a
water brine water (for floor cooling or similar application) water water (for floor cooling or similar application) water brine
Outdoor heat exchanger Inlet dry bulb Inlet wet bulb temperature temperature °C °C 35 35 -
Indoor heat exchanger Inlet Outlet temperature temperature °C °C 12 7 0 -5
35
-
23
18
27
-
a
7
27
-
a
18
46 27
-
a
7 -5
a
The test is performed at the water flow rate obtained during the test at the corresponding standard rating conditions.
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EN 14511-2:2007 (E)
Table 11 — Liquid chilling packages with remote condenser Indoor heat exchanger Inlet Outlet temperature temperature °C °C Standard rating conditions
Application rating conditions a b
Refrigerant side Saturated vapour/ Liquid bubble point temperature a temperature °C °C
Water
12
7
45
40
Brine
0
-5
45
40
Water
b
7
35
30
Brine
b
-5
35
30
The bubble point is defined from the pressure measured at the discharge of the compressor. The test is performed at the flow rate obtained during the test at the corresponding standard rating conditions.
Table 12 — Liquid chilling packages with heat recovery condenser Condenser Standard rating conditions
Air inlet dry bulb Water inlet a b temperature temperature °C °C 35 30
Heat recovery water heat exchanger Water outlet Brine outlet Inlet Outlet temperature temperature temperature temperature °C °C °C °C 7 -5 40 45 Evaporator
c
a
If the air cooled condenser is ducted then the test shall be conducted at the minimum flow rate specified by the manufacturer. b At the minimum flow rate specified by the manufacturer. c With the flow rate as determined during the test at the corresponding standard rating conditions (see Table 8 or Table 10).
Table 13 — Heating capacity conditions for air-cooled multisplit systems
Standard rating conditions Application rating conditions
Outdoor heat exchanger Indoor heat exchanger Inlet dry bulb Inlet wet bulb Inlet dry bulb Inlet wet bulb temperature temperature temperature temperature °C °C °C °C 7 6 20 15 max. 2 -7
1 -8
20 20
15 max. 15 max.
Table 14 — Cooling capacity conditions for air-cooled multisplit systems
Standard rating conditions Application rating conditions a
Outdoor heat exchanger Indoor heat exchanger Inlet dry bulb Inlet wet bulb Inlet dry bulb Inlet wet bulb temperature temperature temperature temperature °C °C °C °C a 35 24 27 19 27 46
a
19 a 24
21 29
15 19
The wet bulb condition is not required when testing units which do not evaporate condensate.
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EN 14511-2:2007 (E)
Table 15 — Heat recovery conditions for air-cooled multisplit systems
Application rating conditions
Outdoor side Indoor Heating side Cooling
Three room calorimeter or air enthalpy Dry bulb Wet bulb temperature temperature °C °C 7 6 20 27
Two room Air enthalpy Dry bulb temperature °C 7
Wet bulb temperature °C 6
20 20
19 19
19
Table 16 — Heating capacity conditions for water-cooled multisplit systems Outdoor heat exchanger Inlet temperature °C
Standard rating conditions
Application rating conditions
Outlet temperature °C
Indoor heat exchanger Inlet dry bulb Inlet wet bulb temperature Temperature °C °C
Water
15
12/
a
20
15 max.
Brine
0
-3/
a
20
15 max.
Water loop
20
17/
a
20
15 max.
Water
10
b
20
15 max.
Brine
5
b
20
15 max.
Brine
-5
b
20
15 max.
a
For units designed for heating and cooling mode, the flow rate obtained during the test at standard rating conditions in cooling mode (see Table 17) is used. b
The test is performed at the flow rate obtained during the test at the corresponding standard rating conditions.
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EN 14511-2:2007 (E)
Table 17 — Cooling capacity conditions for water-cooled multisplit systems Outdoor heat exchanger
Standard rating conditions Application rating conditions a
Indoor heat exchanger
Inlet temperature °C
Outlet temperature °C
Inlet dry bulb Inlet wet bulb temperature temperature °C °C
30
35
27
19
15
a
27
19
40
a
27
19
The test is performed at the nominal water flow rate obtained during the test at the corresponding standard rating conditions.
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NBN EN 14511-2 (2008)
EN 14511-2:2007 (E)
Annex A (normative) Energy labelling application
A.1 General The present standard shall be used to declare the energy efficiency class and to provide performance characteristics of air conditioners and heat pumps under the scope of the Energy Labelling Directive 2002/31/EC, for both the labelling and the technical documentation.
A.2 Rating conditions A.2.1 General The rating conditions for which the performance are declared are indicated in this standard and are specified hereafter for each type of product covered by the energy labelling. The performance rating shall be established in accordance with the test procedure of EN 14511-3.
A.2.2 Air-cooled air conditioners (air-to-air conditioners) Standard rating conditions “comfort” indicated in Table 4 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of single split and packaged air-cooled air conditioners. For reverse cycle units, the heating capacity and the efficiency class shall be determined from one of the standard rating conditions indicated in Table 3 depending of the heat source and heat sink. Standard rating conditions indicated in Table 14 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of air-cooled multisplit air conditioners. For reverse cycle units, the heating capacity and the efficiency class shall be determined from the standard rating conditions indicated in Table 13.
A.2.3 Single-duct air conditioners Standard rating conditions “single-duct” indicated in Table 4 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of single-duct units.
A.2.4 Water-cooled air conditioners (water-to-air conditioners) Standard rating conditions “comfort” indicated in Table 6 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of split and packaged water-cooled air conditioners. For reverse cycle units, the heating capacity and the efficiency class shall be determined from one of the standard rating conditions indicated in Table 5 depending of the heat source: water, brine or close loop. Standard rating conditions indicated in Table 17 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of water-cooled multisplit air conditioners.
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EN 14511-2:2007 (E)
For reverse cycle units, the heating capacity and the efficiency class shall be determined from the standard rating conditions indicated in Table 16.
A.2.5 Double duct air conditioners Standard rating conditions “comfort” (outside air / recycled air) indicated in Table 4 shall be used to determine the cooling capacity, the EER, the annual energy consumption and the efficiency class of double duct air conditioners. For reverse cycle units, the heating capacity and the efficiency class shall be determined from the standard rating conditions "Outside air / recycled air" indicated in Table 3 .
A.2.6 Other appliances Single-duct units operating in the heating mode to which Table 3.3 of Annex IV of Directive 2002/31/EC refers are not covered by EN 14511.
A.3 Test procedure When the present standard is used for the energy labelling of air conditioners and heat pumps below 12 kW, the cooling / heating capacities, power input and EER/COP as well as the energy efficiency class of a product shall be determined by using exclusively the calorimeter room method. For ducted units, the settings of the air flow rate and external static pressure shall be made prior to the cooling / heating capacity tests, according to EN 14511-3:2007, 4.4.1. Once determined, the static pressure shall be set, with dry coil, by adjusting to the air discharge area of the unit, a length of duct equipped with a damper which position shall not be changed during the capacity tests. The length of duct and the distance of the damper from the discharge section of the unit shall conform to the requirements of EN 14511-3:2007, B.2.1.
A.4 Tolerances permitted on declared values A.4.1 General The following requirements apply to the declared values. The requirements for the uncertainties of measurement of 4.3 of EN 14511-3:2007 shall be respected.
A.4.2 First testing The performance published data shall be accepted as valid when a sample of a model, tested in accordance with the present standard, shall meet the following criteria for cooling and heating mode as applicable: Tested cooling and heating capacity
≥ 0,88
X declared capacity
Tested EER
≥ 0,85
X declared EER
Tested COP
≥ 0,85
X declared COP
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EN 14511-2:2007 (E)
A.4.3 Second testing If the result of test on capacity and/or EER/COP carried out on the first appliance is not in compliance with the requirements given in A.4.2, a second test shall be carried out on one other appliance. This second test shall meet the following criteria for cooling and heating mode as applicable: Tested cooling and heating capacity
≥ 0,88
X declared capacity
Tested EER
≥ 0,85
X declared EER
Tested COP
≥ 0,85
X declared COP
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EN 14511-2:2007 (E)
NBN EN 14511-2 (2008)
Bibliography
[1]
CEN/TS 14825, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling – Testing and rating at part load conditions
[2]
Commission Directive 2002/31/EC – Implementation of Council Directive 92/75/EEC with regard to energy labelling of household air-conditioners
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ICS: 23.120
ICS: 23.120
Geregistreerde Belgische norm
NBN EN 14511-3 2e uitg., mei 2008
Normklasse: D 40
Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en voor koeling - Deel 3: Beproevingsmethoden Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 3 : Méthodes d'essai Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 3: Test methods
Toelating tot publicatie: 29 januari 2008 Vervangt NBN EN 14511-3 (2004). Deze Europese norm EN 14511-3:2008 heeft de status van een Belgische norm. Deze Europese norm bestaat in drie officiële versies (Duits, Engels, Frans).
Bureau voor Normalisatie Brabançonnelaan 29 B-1000 Brussel België Tel: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be Bank 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BEB1 BTW: BE 0880.857.592
© NBN 2008
Prijsgroep: 20
ICS: 23.120
norme belge enregistrée
NBN EN 14511-3 2e éd., mai 2008
Indice de classement: D 40
Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 3 : Méthodes d'essai Luchtbehandelingsapparatuur, koeleenheden met vloeistof en warmtepompen met elektrisch aangedreven compressoren voor ruimteverwarming en voor koeling - Deel 3: Beproevingsmethoden Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling - Part 3: Test methods
Autorisation de publication: 29 janvier 2008 Remplace NBN EN 14511-3 (2004). La présente norme européenne EN 14511-3:2008 a le statut d'une norme belge. La présente norme européenne existe en trois versions officielles (allemand, anglais, français).
Bureau de Normalisation - Avenue de la Brabançonne 29 - 1000 Bruxelles - Belgique Tél: +32 2 738 01 12 - Fax: +32 2 733 42 64 - E-mail:
[email protected] - NBN Online: www.nbn.be Banque 000-3255621-10 IBAN BE41 0003 2556 2110 BIC BPOT BEB1 TVA: BE 0880.857.592
© NBN 2008
Prix: groupe 20
NBN EN 14511-3 (2008)
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14511-3 November 2007
ICS 23.120
Supersedes EN 14511-3:2004
English Version
Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling Part 3: Test methods Climatiseurs, groupes refroidisseurs de liquide et pompes à chaleur avec compresseur entraîné par moteur électrique pour le chauffage et la réfrigération des locaux - Partie 3 : Méthodes d'essai
Luftkonditionierer, Flüssigkeitskühlsätze und Wärmepumpen mit elektrisch angetriebenen Verdichtern für die Raumbeheizung und Kühlung - Teil 3: Prüfverfahren
This European Standard was approved by CEN on 13 October 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36
© 2007 CEN
All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
B-1050 Brussels
Ref. No. EN 14511-3:2007: E
EN 14511-3:2007 (E)
Contents
NBN EN 14511-3 (2008)
Page
Foreword..............................................................................................................................................................4 1
Scope ......................................................................................................................................................5
2
Normative references ............................................................................................................................5
3
Terms and definitions ...........................................................................................................................5
4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.2 4.2.1 4.2.2 4.3 4.4 4.4.1 4.4.2 4.4.3 4.4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4
Rating capacity test...............................................................................................................................6 Basic principles .....................................................................................................................................6 Heating capacity ....................................................................................................................................6 Cooling capacity ....................................................................................................................................6 Heat recovery capacity..........................................................................................................................7 Power input of fans for units without duct connection .....................................................................7 Power input of fans for units with duct connection...........................................................................8 Power input of liquid pumps ................................................................................................................8 Units for use with remote condenser ..................................................................................................9 Test apparatus .......................................................................................................................................9 Arrangement of the test apparatus ......................................................................................................9 Installation and connection of the test object ..................................................................................10 Uncertainties of measurement ...........................................................................................................11 Test procedure .....................................................................................................................................12 General..................................................................................................................................................12 Output measurement for water-to-water and water-to-air units .....................................................14 Output measurement for cooling capacity of air-to-water and air-to-air units .............................14 Output measurement for heating capacity of air-to-water and air-to-air units .............................15 Test results ...........................................................................................................................................17 Data to be recorded .............................................................................................................................17 Cooling capacity and heat recovery capacity calculation...............................................................19 Heating capacity calculation ..............................................................................................................20 Effective power input calculation.......................................................................................................20
5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.2 5.3
Heat recovery test for air-cooled multisplit systems.......................................................................20 Test installation....................................................................................................................................20 General..................................................................................................................................................20 Three-room calorimeter method ........................................................................................................21 Three-room air-enthalpy method .......................................................................................................21 Two-room air-enthalpy method ..........................................................................................................21 Test procedure .....................................................................................................................................21 Test results ...........................................................................................................................................21
6 6.1 6.2 6.3
Test report ............................................................................................................................................21 General information .............................................................................................................................21 Additional information ........................................................................................................................22 Rating test results................................................................................................................................22
Annex A (informative) Calorimeter test method............................................................................................23 Annex B (informative) Indoor air enthalpy test method ...............................................................................31 Annex C (informative) Heating capacity tests - Flow chart and examples of different test sequences ............................................................................................................................................33 Annex D (informative) Conformance criteria.................................................................................................37 Annex E (informative) Symbols used in annexes .........................................................................................38 Annex F (informative) Test at system reduced capacity..............................................................................40
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Annex G (informative) Individual unit tests...................................................................................................41 Bibliography......................................................................................................................................................43
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EN 14511-3:2007 (E)
NBN EN 14511-3 (2008)
Foreword This document (EN 14511-3:2007) has been prepared by Technical Committee CEN/TC 113 “Heat pumps and air conditioning units”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2008, and conflicting national standards shall be withdrawn at the latest by May 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14511-3:2004. EN 14511 comprises the following parts under the general title " Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling “: -
Part 1: Terms and definitions
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Part 2: Test conditions
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Part 3: Test methods
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Part 4: Requirements
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
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NBN EN 14511-3 (2008)
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EN 14511-3:2007 (E)
Scope
This part of EN 14511 specifies the test methods for the rating and performance of air and water-cooled air conditioners, liquid chilling packages, air-to-air, water-to-air, air-to-water and water-to-water heat pumps with electrically driven compressors when used for space heating and cooling. It also specifies the method of testing and reporting for heat recovery capacities, system reduced capacities and the capacity of individual indoor units of multisplit systems, where applicable. This European Standard applies to factory-made units that can be ducted. This standard applies to factory-made liquid chilling packages with integral condensers or for use with remote condensers. This standard applies to factory-made units of either fixed capacity or variable capacity by any means. Packaged units, single split and multisplit systems are covered by this standard. Single duct and double duct units are covered by the standard. In the case of units consisting of several parts, the standard applies only to those designed and supplied as a complete package, except for liquid chilling packages with remote condenser. This standard is primarily intended for water and brine chilling packages but can be used for other liquid subject to agreement. This standard applies to air-to-air air conditioners which evaporate the condensate on the condenser side. The units having their condenser cooled by air and by the evaporation of external additional water are not covered by this standard. This standard does not apply to units using transcritical cycles, e.g. with CO 2 as refrigerant. Installations used for heating and/or cooling of industrial processes are not within the scope of this standard. NOTE 1
Part load testing of units is dealt with in CEN/TS 14825.
NOTE 2
All the symbols given in this text should be used regardless of the language used.
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Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 14511-1:2007, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling – Part 1: Terms and definitions EN 14511-2:2007, Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling – Part 2: Test conditions
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Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14511-1:2007 apply.
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EN 14511-3:2007 (E)
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NBN EN 14511-3 (2008)
Rating capacity test
4.1
Basic principles
4.1.1
Heating capacity
The heating capacity of air conditioners and of air-to-air or water-to-air heat pumps shall be determined by measurements in a calorimeter room or by the air enthalpy method which are described in Annex A and Annex B respectively. The heating capacity of air-to-water, water-to-water heat pumps and liquid chilling packages shall be determined in accordance with the direct method at the water or brine heat exchanger, by determination of the volume flow of the heat transfer medium, and the inlet and outlet temperatures, taking into consideration the specific heat capacity and density of the heat transfer medium. For steady state operation, the heating capacity shall be determined using the following formula:
P H = q × ρ × c p ∆t
(1)
where: P H
is the heat capacity, in Watts;
q
is the volume flow rate, in cubic metres per second;
ρ
is the density, in kilograms per cubic metre;
c p
is the specific heat at constant pressure, in joules per kilogram and kelvin;
∆t
is the difference between inlet and outlet temperatures, in kelvin .
For the heating capacity calculation in transient operation, refer to 4.5.3.2. The heating capacity shall be corrected for the heat from the fan or pump:
−
if the fan or pump at the indoor heat exchanger is an integral part of the unit, the same power (calculated in 4.1.5.1 or 4.1.6.1) which is excluded from the total power input shall be also subtracted from the heating capacity;
−
If the fan or pump at the indoor heat exchanger is not an integral part of the unit, the same power (calculated in 4.1.5.2 or 4.1.6.2) which is included in the effective power input shall be also added to the heating capacity.
4.1.2
Cooling capacity
The cooling capacity of air conditioners and of air-to-air or water-to-air heat pumps shall be determined by measurements in a calorimeter room or by the air enthalpy method which are described in Annex A and Annex B respectively. The cooling capacity of air-to-water, water-to-water heat pumps and liquid chilling packages shall be determined in accordance with the direct method at the water or brine heat exchanger, by determination of the volume flow of the heat transfer medium, and the inlet and outlet temperatures, taking into consideration the specific heat capacity and density of the heat transfer medium. The cooling capacity shall be determined using the following formula:
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NBN EN 14511-3 (2008)
P C = q × ρ × c p ∆t
EN 14511-3:2007 (E)
(2)
where: P C
is the cooling capacity, in Watts;
q
is the volume flow rate, in cubic metres per second;
ρ
is the density, in kilograms per cubic metre;
c p
is the specific heat at constant pressure, in joules per kilogram and kelvin;
∆t
is the difference between inlet and outlet temperatures, in kelvin.
The cooling capacity shall be corrected for the heat from the fan or pump: a) If the fan or pump at the evaporator is an integral part of the unit, the same power (calculated in 4.1.5.1 or 4.1.6.1) which is excluded from the total power input is also added to the cooling capacity. b) If the fan or pump at the evaporator is not an integral part of the unit, the same power (calculated in 4.1.5.2 or 4.1.6.2) which is included in the effective power input is also subtracted from the cooling capacity. 4.1.3
Heat recovery capacity
The heat recovery capacity of air-to-water and water-to-water heat pumps and liquid chilling packages shall be determined in accordance with the direct method at the water or brine heat exchanger, by determination of the volume flow of the heat transfer medium, and the inlet and outlet temperatures, taking into consideration the specific heat capacity and density of the heat transfer medium. The heat recovery capacity shall be determined using the following formula:
P HR = q × ρ × c p × ∆t
(3)
where: P HR
is the heat recovery capacity, in Watts;
q
is the volume flow rate, in cubic metres per second;
ρ
is the density, in kilograms per cubic metre;
c p
is the specific heat at constant pressure, in joules per kilogram and kelvin;
∆t
is the difference between inlet and outlet temperatures in kelvin.
4.1.4
Power input of fans for units without duct connection
In the case of units which are not designed for duct connection, i.e. which do not permit any external pressure differences, and which are equipped with an integral fan, the power absorbed by the fan shall be included in the effective power absorbed by the unit.
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EN 14511-3:2007 (E)
4.1.5
NBN EN 14511-3 (2008)
Power input of fans for units with duct connection
4.1.5.1 If a fan is an integral part of the unit, only a fraction of the input of the fan motor shall be included in the effective power absorbed by the unit. The fraction that is to be excluded from the total power absorbed by the unit shall be calculated using the following formula:
q × ∆ p e
η
[W]
(4)
where:
η
is 0,3 by convention;
∆ pe is the measured available external static pressure difference, in Pascals; q
is the nominal air flow rate, in cubic meters per second.
4.1.5.2 If no fan is provided with the unit, the proportional power input which is to be included in the effective power absorbed by the unit, shall be calculated using the following formula:
q × ∆ p i
η
[W]
(5)
where:
η
is 0,3 by convention;
∆ pi is the measured internal static pressure difference, in Pascals; q 4.1.6
is the nominal air flow rate, in cubic meters per second. Power input of liquid pumps
4.1.6.1 If a liquid pump is an integral part of the unit, only a fraction of the input to the pump motor shall be included in the effective power absorbed by the unit. The fraction which is to be excluded from the total power absorbed by the unit shall be calculated using the following formula:
q × ∆ p e
η
[W]
(6)
where:
η
is 0,3 by convention;
∆ pe is the measured available external static pressure difference, in Pascals; q
is the nominal water flow rate, in cubic meters per second.
4.1.6.2 If no liquid pump is provided with the unit, the proportional power input which is to be included in the effective power absorbed by the unit, shall be calculated using the following formula:
q × ∆ p i
η
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[W]
(7)
NBN EN 14511-3 (2008)
EN 14511-3:2007 (E)
where:
η
is 0,3 by convention;
∆ pi is the measured internal static pressure difference, in Pascals; q
is the nominal water flow rate, in cubic meters per second.
4.1.6.3 In the case of appliances designed especially to operate on a distributing network of pressurised water without water-pump, no correction is to be applied to the power input. 4.1.7
Units for use with remote condenser
The power from the auxiliary liquid pump of the remote condenser shall not be taken into account in the effective power input.
4.2
Test apparatus
4.2.1 4.2.1.1
Arrangement of the test apparatus General requirements
The test apparatus shall be designed in such a way that all requirements on adjustment of set values, stability criteria and uncertainties of measurement according to this European Standard can be fulfilled. 4.2.1.2
Test room for the air side
The size of the test room shall be selected such that any resistance to air flow at the air inlet and air outlet orifices of the test object is avoided. The air flow through the room shall not be capable of initiating any short circuit between these two orifices, and therefore the velocity of the air flows through the room at these two locations shall not exceed 1,5 m/s when the test object is switched off. The air velocity in the room shall also not be greater than the mean velocity through the unit inlet. Unless otherwise stated by the manufacturer, the air inlet or air outlet orifices shall be not less than 1 m distant from the surfaces of the test room. Any direct heat radiation by heating units in the test room onto the unit or onto the temperature measuring points shall be avoided. 4.2.1.3
Appliances with duct connection
Ducted air systems shall be sufficiently air tight to ensure that the measured results are not significantly influenced by exchange of air with the surroundings. 4.2.1.4
Appliances with integral pumps
For appliances with integral and adjustable water or brine pumps, the external static pressure will be set at the same time as the temperature difference. 4.2.1.5
Liquid chilling package for use with remote condenser
Units for use with remote condenser are tested by using a water-cooled condenser, the characteristics of which shall enable the intended operating conditions to be achieved.
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EN 14511-3:2007 (E)
4.2.2 4.2.2.1
NBN EN 14511-3 (2008)
Installation and connection of the test object General
The test object shall be installed and connected for the test as recommended by the manufacturer in his installation and operation manual. The accessories provided by option (for example heating element) are not included in the test. For single duct units, in case the manufacturer's instructions do not specify how to install the discharge duct, the following recommendations shall apply. For single ducts, the discharge duct shall be as short and straight as possible compatibly with minimum distance between the unit and the wall for correct air inlet but not less than 50 cm. No accessory shall be connected to the discharge end of the duct. For double duct units, the same requirements apply to both suction and discharge ducts, unless the appliance is designed to be installed directly on the wall. For multisplit systems, the test shall be performed with the system operating at a capacity ratio of 1, or as close as possible. When performing measures in heating mode, set the highest room temperature on the unit/system control device; when performing measures in cooling mode, set the lowest room temperature on the unit/system control device. For unit with open-type compressor the electric motor shall be supplied or specified by the manufacturer. The compressor shall be operated at the rotational speed specified by the manufacturer. For inverter type control units, if the manufacturer gives instructions for the setting of the frequency for each rating condition, this setting shall be done. NOTE To set up a multisplit system which incorporates an inverter-controlled compressor, skilled personnel with a knowledge of control software will be required. The manufacturer or his nominated agent should be in attendance when the system is being installed and prepared for tests.
4.2.2.2
Installation of unit consisting of several parts
In the case of a unit consisting of several parts, the following installation conditions shall be complied with for the test. a) The refrigerant lines shall be installed in accordance with the manufacturer's instructions with a minimum length of 5 m and a greater length to a maximum of 7,5 m if the constraints of the test installation make 5 m not possible. b) The lines shall be installed so that the difference in elevation does not exceed 2,5 m. c)
The thermal insulation of the lines shall be applied in accordance with the manufacturer's instructions.
d) Unless constrained by the design, at least half of the connecting lines shall be exposed to the outside conditions, with the rest of the lines exposed to the inside conditions. 4.2.2.3
Indoor units of multisplit systems
When testing a multisplit system, indoor units shall be either all non ducted or all ducted. If they are ducted, all indoor units shall be of the same model, i.e. having the same airflow rate and the same external static pressure. In case of equipment with non ducted indoor units tested using the air enthalpy method, the above requirement on ducted indoor units shall apply.
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4.2.2.4
EN 14511-3:2007 (E)
Measurements
Temperature and pressure measuring points shall be arranged in order to obtain mean significant values. For free air intake temperature measurements, it is required:
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either to have at least one sensor per square meter and not less than four measuring points equally distributed on the air surface;
−
or to use a sampling device. It shall be completed by four sensors for checking uniformity if the surface area is greater than 1 m².
For control cabinet air conditioners, the inlet temperature at the evaporator is measured instead of the temperature inside the control cabinet.
4.3
Uncertainties of measurement
The uncertainties of measurement shall not exceed the values specified in Table 1. Table 1 — Uncertainties of measurement for indicated values Measured quantity
Unit
Uncertainty of measurement
°C
± 0,1 K
3
m /s
±1%
Pa
± 5 Pa (∆p ≤ 100 Pa)
Liquid - temperature inlet/outlet - volume flow - static pressure difference
± 5 % (∆p > 100 Pa) Air - dry bulb temperature
°C
± 0,2 K
- wet bulb temperature
°C
± 0,3 K
m /s
3
±5%
Pa
± 5 Pa (∆p ≤ 100 Pa)
- volume flow - static pressure difference
± 5 % (∆p > 100 Pa) Refrigerant - pressure at compressor outlet
kPa
±1%
°C
± 0,5 K
%
±2%
- electric power
W
±1%
- voltage
V
± 0,5 %
- current
A
± 0,5 %
kWh
±1%
- temperature Concentration - Heat transfer medium Electrical quantities
- electrical energy Compressor rotational speed
-1
min
± 0,5 %
The heating or cooling capacities measured on the liquid side shall be determined within a maximum uncertainty of 5 % independent of the individual uncertainties of measurement including the uncertainties on the properties of fluids.
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EN 14511-3:2007 (E)
NBN EN 14511-3 (2008)
The steady state heating or cooling capacities determined using the calorimeter method shall be determined with a maximum uncertainty of 5 %, independent of the individual uncertainties of measurement including the uncertainties on the properties of fluids. Heating capacity determined during transient operation (defrost cycles) using the calorimeter method shall be determined with a maximum uncertainty of 10 %, independent of the individual uncertainties of measurement including the uncertainties on the properties of fluids. The heating and cooling capacities measured on the air side using the air enthalpy method shall be determined with a maximum uncertainty of 10 %, independent of the individual uncertainties of measurement including the uncertainties on the properties of fluids.
4.4
Test procedure
4.4.1 4.4.1.1
General All units
The test conditions are given in EN 14511-2. If liquid heat transfer media other than water are used, the specific heat capacity and density of such heat transfer media shall be determined and taken into consideration in the evaluation. Table 4 states permissible deviations of the measured values from the test conditions. 4.4.1.2
Non ducted units
For non ducted units, the adjustable settings such as louvers and fan speed shall be set for maximum air flow. 4.4.1.3
Ducted units
The volume flow and the pressure difference shall be related to standard air and with dry evaporator. The air flow rate given by the manufacturer shall be converted into standard air conditions. The air flow rate setting shall be made when the fan only is operating, at standard air conditions. The rated airflow rate given by the manufacturer shall be set and the resulting external static pressure (ESP) measured. This ESP shall be greater than the minimum value given in Table 2 for comfort air conditioners and Table 3 for close control air conditioners but not greater than 80 % of the maximum external static pressure specified by the manufacturer. If the fan of the unit has an adjustable speed, it shall be adjusted to the lowest speed that provide the minimum ESP or greater. If the maximum ESP of the unit is lower than the minimum ESP given in Table 2 or Table 3, then the air flow rate is lowered to achieve an ESP equal to 80 % of the maximum ESP of the manufacturer. In case this ESP is lower than 25 Pa, the unit can be considered as a free delivery unit and be tested as a non ducted unit with an ESP of 0 Pa.
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EN 14511-3:2007 (E)
Table 2 — Pressure requirement for comfort air conditioners Standard capacity ratings kW
Minimum external static a b pressure Pa
0
