Systems Design Report from hap

September 12, 2017 | Author: Roberto Traspalacio | Category: Hvac, Ventilation (Architecture), Mechanical Fan, Meteorology, Building Engineering
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Descripción: breve informe acerca de los requerimientos de enfriamiento de un local y como acondicionarlo...

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Air System Sizing Summary for Default System Project Name: Proyecto de aire acondicionado Prepared by: UNEXPO Barquisimeto

09/06/2015 07:28p.m.

Air System Information Air System Name ................................ Default System Equipment Class ............................................ CW AHU Air System Type ................................................ SZCAV

Number of zones ............................................................. 1 Floor Area ............................................................... 2552.0 ft² Location ....................................... Maracaibo, Venezuela

Sizing Calculation Information Calculation Months ..................................... Jan to Dec Sizing Data .................................................. Calculated

Zone CFM Sizing ................. Sum of space airflow rates Space CFM Sizing ............. Individual peak space loads

Central Cooling Coil Sizing Data Total coil load .......................................................... 16.1 Total coil load ....................................................... 192.6 Sensible coil load ................................................. 113.4 Coil CFM at Jul 1600 ............................................. 4336 Max block CFM ..................................................... 4336 Sum of peak zone CFM ........................................ 4336 Sensible heat ratio ............................................... 0.589 ft²/Ton ................................................................... 159.0 BTU/(hr-ft²) ............................................................. 75.5 Water flow @ 10.0 °F rise .................................... 38.54

Tons MBH MBH CFM CFM CFM

gpm

Load occurs at ..................................................... Jul 1600 OA DB / WB ...................................................... 96.5 / 83.9 Entering DB / WB ............................................. 82.2 / 70.8 Leaving DB / WB .............................................. 58.0 / 57.1 Coil ADP ..................................................................... 55.3 Bypass Factor .......................................................... 0.100 Resulting RH ................................................................. 58 Design supply temp. ................................................... 58.0 Zone T-stat Check .................................................... 1 of 1 Max zone temperature deviation .................................. 0.0

°F °F °F °F % °F OK °F

Supply Fan Sizing Data Actual max CFM .................................................... 4336 CFM Standard CFM ....................................................... 4333 CFM Actual max CFM/ft² ................................................ 1.70 CFM/ft²

Outdoor Ventilation Air Data

Fan motor BHP ........................................................... 2.97 BHP Fan motor kW ............................................................. 2.36 kW Fan static .................................................................... 2.50 in wg CFM/person .............................................................. 12.04 CFM/person

Design airflow CFM ................................................. 891 CFM CFM/ft² ................................................................... 0.35 CFM/ft²

Hourly Analysis Program v4.91

Page 1 of 5

Zone Sizing Summary for Default System Project Name: Proyecto de aire acondicionado Prepared by: UNEXPO Barquisimeto

09/06/2015 07:28p.m.

Air System Information Air System Name ................................ Default System Equipment Class ............................................ CW AHU Air System Type ................................................ SZCAV

Number of zones ............................................................. 1 Floor Area ............................................................... 2552.0 ft² Location ....................................... Maracaibo, Venezuela

Sizing Calculation Information Calculation Months ..................................... Jan to Dec Sizing Data .................................................. Calculated

Zone CFM Sizing ................. Sum of space airflow rates Space CFM Sizing ............. Individual peak space loads

Zone Terminal Sizing Data

Zone Name Zone 1

Design Minimum Supply Supply Airflow Airflow (CFM) (CFM) 4336 4336

Zone CFM/ft² 1.70

Reheat Zone Zone Reheat Coil Htg Unit Htg Unit Mixing Coil Water Coil Water Box Fan Load gpm Load gpm Airflow (MBH) @ 20.0 °F (MBH) @ 20.0 °F (CFM) 0.0 0.00 0.0 0.00 0

Zone Peak Sensible Loads

Zone Name Zone 1

Zone Cooling Time of Sensible Peak Sensible (MBH) Cooling Load 78.6 Jul 1700

Zone Heating Load (MBH) 0.0

Zone Floor Area (ft²) 2552.0

Space Loads and Airflows

Zone Name / Space Name Zone 1 planta baja mezzanina

Hourly Analysis Program v4.91

Cooling Sensible (MBH)

Mult. 1 1

43.8 35.7

Time of Peak Sensible Load Jul 1700 Jul 1800

Air Flow (CFM) 2389 1947

Heating Load (MBH) 0.0 0.0

Floor Area (ft²) 1597.0 955.0

Space CFM/ft² 1.50 2.04

Page 2 of 5

Air System Design Load Summary for Default System Project Name: Proyecto de aire acondicionado Prepared by: UNEXPO Barquisimeto

ZONE LOADS Window & Skylight Solar Loads Wall Transmission Roof Transmission Window Transmission Skylight Transmission Door Loads Floor Transmission Partitions Ceiling Overhead Lighting Task Lighting Electric Equipment People Infiltration Miscellaneous Safety Factor >> Total Zone Loads Zone Conditioning Plenum Wall Load Plenum Roof Load Plenum Lighting Load Return Fan Load Ventilation Load Supply Fan Load Space Fan Coil Fans Duct Heat Gain / Loss >> Total System Loads Central Cooling Coil >> Total Conditioning Key:

Hourly Analysis Program v4.91

09/06/2015 07:28p.m.

DESIGN COOLING DESIGN HEATING COOLING DATA AT Jul 1600 HEATING DATA AT DES HTG COOLING OA DB / WB 96.5 °F / 83.9 °F HEATING OA DB / WB 72.0 °F / 60.1 °F Sensible Latent Sensible Latent Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr) 0 ft² 0 0 ft² 1958 ft² 22550 1958 ft² 0 955 ft² 11737 955 ft² 0 0 ft² 0 0 ft² 0 0 ft² 0 0 ft² 0 0 ft² 0 0 ft² 0 1597 ft² 0 1597 ft² 0 411 ft² 0 411 ft² 0 1597 ft² 0 1597 ft² 0 5104 W 14632 0 0 0W 0 0 0 3506 W 11380 0 0 74 14974 32670 0 0 0 0 0 0 0 0 0 0 0 0% / 0% 0 0 0% 0 0 75274 32670 0 0 86044 32670 0 0 0% 0 0 0 0% 0 0 0 0% 0 0 0 4336 CFM 0 4336 CFM 0 891 CFM 19337 46531 891 CFM -1924 0 4336 CFM 8036 4336 CFM -8036 0 0 0% 0 0% 0 113417 79201 -9960 0 113417 79204 -9960 0 113417 79204 -9960 0 Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads

Page 3 of 5

System Psychrometrics for Default System Project Name: Proyecto de aire acondicionado Prepared by: UNEXPO Barquisimeto

09/06/2015 07:28p.m.

July DESIGN COOLING DAY, 1600 TABLE 1:

SYSTEM DATA

Component Ventilation Air Vent - Return Mixing Supply Fan Central Cooling Coil Cold Supply Duct Zone Air Return Plenum

Location Inlet Outlet Outlet Outlet Outlet Outlet

Dry-Bulb Temp (°F) 96.5 80.5 82.2 58.0 58.0 76.4 76.4

Specific Humidity (lb/lb) 0.02232 0.01358 0.01358 0.00973 0.00973 0.01132 0.01132

Airflow (CFM) 891 4336 4336 4336 4336 4336 4336

CO2 Level (ppm) 400 1655 1655 1655 1655 1980 1980

Sensible Heat (BTU/hr) 19337 8036 113417 86044 0

Latent Heat (BTU/hr) 46531 79204 32670 -

Air Density x Heat Capacity x Conversion Factor: At sea level = 1.080; At site altitude = 1.079 BTU/(hr-CFM-F) Air Density x Heat of Vaporization x Conversion Factor: At sea level = 4746.6; At site altitude = 4743.2 BTU/(hr-CFM) Site Altitude = 20.0 ft

TABLE 2:

ZONE DATA

Zone Name Zone 1

Hourly Analysis Program v4.91

Zone Sensible Load (BTU/hr) 75274

Zone T-stat Cond Mode (BTU/hr) Cooling 86044

Zone Temp (°F) 76.4

Zone Airflow (CFM) 4336

CO2 Level (ppm) 1980

Terminal Heating Coil (BTU/hr) 0

Zone Heating Unit (BTU/hr) 0

Page 4 of 5

System Psychrometrics for Default System Project Name: Proyecto de aire acondicionado Prepared by: UNEXPO Barquisimeto

09/06/2015 07:28p.m.

WINTER DESIGN HEATING TABLE 1:

SYSTEM DATA

Component Ventilation Air Vent - Return Mixing Supply Fan Central Cooling Coil Cold Supply Duct Zone Air Return Plenum

Location Inlet Outlet Outlet Outlet Outlet Outlet

Dry-Bulb Temp (°F) 72.0 70.4 72.1 70.0 70.0 70.0 70.0

Specific Humidity (lb/lb) 0.00835 0.00835 0.00835 0.00835 0.00835 0.00835 0.00835

Airflow (CFM) 891 4336 4336 4336 4336 4336 4336

CO2 Level (ppm) 400 432 432 432 432 440 440

Sensible Heat (BTU/hr) 1924 8036 9960 0 0

Latent Heat (BTU/hr) 0 0 0 -

Air Density x Heat Capacity x Conversion Factor: At sea level = 1.080; At site altitude = 1.079 BTU/(hr-CFM-F) Air Density x Heat of Vaporization x Conversion Factor: At sea level = 4746.6; At site altitude = 4743.2 BTU/(hr-CFM) Site Altitude = 20.0 ft

TABLE 2:

ZONE DATA

Zone Name Zone 1

Hourly Analysis Program v4.91

Zone Sensible Load (BTU/hr) 0

Zone T-stat Cond Mode (BTU/hr) Deadband 0

Zone Temp (°F) 70.0

Zone Airflow (CFM) 4336

CO2 Level (ppm) 440

Terminal Heating Coil (BTU/hr) 0

Zone Heating Unit (BTU/hr) 0

Page 5 of 5

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