Descripción: breve informe acerca de los requerimientos de enfriamiento de un local y como acondicionarlo...
Description
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
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
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:
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
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
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