Air System Sizing Summary for Default System
Project Name: Proyecto de aire acondicionado 09/06/2015
Prepared by: UNEXPO Barquisimeto 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 Tons Total coil load ... 192.6 MBH Sensible coil load ... 113.4 MBH Coil CFM at Jul 1600 ... 4336 CFM Max block CFM ... 4336 CFM Sum of peak zone CFM ... 4336 CFM Sensible heat ratio ... 0.589 ft²/Ton ... 159.0 BTU/(hr-ft²) ... 75.5 Water flow @ 10.0 °F rise ... 38.54 gpm
Load occurs at ... Jul 1600 OA DB / WB ... 96.5 / 83.9 °F Entering DB / WB ... 82.2 / 70.8 °F Leaving DB / WB ... 58.0 / 57.1 °F Coil ADP ... 55.3 °F Bypass Factor ... 0.100 Resulting RH ... 58 % Design supply temp. ... 58.0 °F Zone T-stat Check ... 1 of 1 OK Max zone temperature deviation ... 0.0 °F
Supply Fan Sizing Data
Actual max CFM ... 4336 CFM Standard CFM ... 4333 CFM Actual max CFM/ft² ... 1.70 CFM/ft² Fan motor BHP ... 2.97 BHP Fan motor kW ... 2.36 kW Fan static ... 2.50 in wg Outdoor Ventilation Air Data
Design airflow CFM ... 891 CFM CFM/ft² ... 0.35 CFM/ft²
CFM/person ... 12.04 CFM/person
Zone Sizing Summary for Default System
Project Name: Proyecto de aire acondicionado 09/06/2015
Prepared by: UNEXPO Barquisimeto 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 Design Supply Airflow (CFM) Minimum Supply Airflow (CFM) Zone CFM/ft² Reheat Coil Load (MBH) Reheat Coil Water gpm @ 20.0 °F Zone Htg Unit Coil Load (MBH) Zone Htg Unit Water gpm @ 20.0 °F Mixing Box Fan Airflow (CFM) Zone 1 4336 4336 1.70 0.0 0.00 0.0 0.00 0
Zone Peak Sensible Loads
Zone Zone Zone
Cooling Time of Heating Floor Sensible Peak Sensible Load Area Zone Name (MBH) Cooling Load (MBH) (ft²)
Zone 1 78.6 Jul 1700 0.0 2552.0
Space Loads and Airflows
Zone Name /
Space Name Mult.
Cooling Sensible (MBH) Time of Peak Sensible Load Air Flow (CFM) Heating Load (MBH) Floor Area (ft²) Space CFM/ft² Zone 1
planta baja 1 43.8 Jul 1700 2389 0.0 1597.0 1.50
mezzanina 1 35.7 Jul 1800 1947 0.0 955.0 2.04
Air System Design Load Summary for Default System
Project Name: Proyecto de aire acondicionado 09/06/2015
Prepared by: UNEXPO Barquisimeto 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 ZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)
Window & Skylight Solar Loads 0 ft² 0 - 0 ft² -
-Wall Transmission 1958 ft² 22550 - 1958 ft² 0 -Roof Transmission 955 ft² 11737 - 955 ft² 0 -Window Transmission 0 ft² 0 - 0 ft² 0 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 1597 ft² 0 - 1597 ft² 0 -Partitions 411 ft² 0 - 411 ft² 0 -Ceiling 1597 ft² 0 - 1597 ft² 0 -Overhead Lighting 5104 W 14632 - 0 0 -Task Lighting 0 W 0 - 0 0 -Electric Equipment 3506 W 11380 - 0 0 -People 74 14974 32670 0 0 0 Infiltration - 0 0 - 0 0 Miscellaneous - 0 0 - 0 0 Safety Factor 0% / 0% 0 0 0% 0 0
>> Total Zone Loads - 75274 32670 - 0 0
Zone Conditioning - 86044 32670 - 0 0
Plenum Wall Load 0% 0 - 0 0
-Plenum Roof Load 0% 0 - 0 0
-Plenum Lighting Load 0% 0 - 0 0
-Return Fan Load 4336 CFM 0 - 4336 CFM 0
-Ventilation Load 891 CFM 19337 46531 891 CFM -1924 0
Supply Fan Load 4336 CFM 8036 - 4336 CFM -8036
-Space Fan Coil Fans - 0 - - 0
-Duct Heat Gain / Loss 0% 0 - 0% 0
->> Total System Loads - 113417 79201 - -9960 0
Central Cooling Coil - 113417 79204 - -9960 0
>> Total Conditioning - 113417 79204 - -9960 0
Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
System Psychrometrics for Default System
Project Name: Proyecto de aire acondicionado 09/06/2015
Prepared by: UNEXPO Barquisimeto 07:28p.m.
July DESIGN COOLING DAY, 1600 TABLE 1: SYSTEM DATA
Dry-Bulb Specific Sensible Latent
Temp Humidity Airflow CO2 Level Heat Heat Component Location (°F) (lb/lb) (CFM) (ppm) (BTU/hr) (BTU/hr)
Ventilation Air Inlet 96.5 0.02232 891 400 19337 46531
Vent - Return Mixing Outlet 80.5 0.01358 4336 1655 -
-Supply Fan Outlet 82.2 0.01358 4336 1655 8036
-Central Cooling Coil Outlet 58.0 0.00973 4336 1655 113417 79204
Cold Supply Duct Outlet 58.0 0.00973 4336 1655 -
-Zone Air - 76.4 0.01132 4336 1980 86044 32670
Return Plenum Outlet 76.4 0.01132 4336 1980 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 Terminal Zone
Sensible Zone Zone Zone CO2 Heating Heating Load T-stat Cond Temp Airflow Level Coil Unit Zone Name (BTU/hr) Mode (BTU/hr) (°F) (CFM) (ppm) (BTU/hr) (BTU/hr)
Zone 1 75274 Cooling 86044 76.4 4336 1980 0 0
System Psychrometrics for Default System
Project Name: Proyecto de aire acondicionado 09/06/2015
Prepared by: UNEXPO Barquisimeto 07:28p.m.
WINTER DESIGN HEATING TABLE 1: SYSTEM DATA
Dry-Bulb Specific Sensible Latent
Temp Humidity Airflow CO2 Level Heat Heat Component Location (°F) (lb/lb) (CFM) (ppm) (BTU/hr) (BTU/hr)
Ventilation Air Inlet 72.0 0.00835 891 400 1924 0
Vent - Return Mixing Outlet 70.4 0.00835 4336 432 -
-Supply Fan Outlet 72.1 0.00835 4336 432 8036
-Central Cooling Coil Outlet 70.0 0.00835 4336 432 9960 0
Cold Supply Duct Outlet 70.0 0.00835 4336 432 -
-Zone Air - 70.0 0.00835 4336 440 0 0
Return Plenum Outlet 70.0 0.00835 4336 440 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 Terminal Zone
Sensible Zone Zone Zone CO2 Heating Heating Load T-stat Cond Temp Airflow Level Coil Unit Zone Name (BTU/hr) Mode (BTU/hr) (°F) (CFM) (ppm) (BTU/hr) (BTU/hr)
Zone 1 0 Deadband 0 70.0 4336 440 0 0
