Air System Sizing Summary for school chiller
Project Name: school dubai
Prepared by: al
05-29-2015
12:26PM
Air System Information
Air System Name ................................... school chiller
Equipment Class ............................................ CW AHU
Air System Type ..................................................... VAV
Number of zones ............................................................. 6
Floor Area ............................................................... 4752.0 ft
Location ............................ Dubai, United Arab Emirates
Sizing Calculation Information
Zone and Space Sizing Method:
Zone CFM ............................ Peak zone sensible load
Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec
Sizing Data ...................................................... Calculated
Central Cooling Coil Sizing Data
Total coil load .......................................................... 40.8
Total coil load ....................................................... 489.9
Sensible coil load ................................................. 279.7
Coil CFM at Jun 1500 ........................................... 6922
Max block CFM at Aug 1700 ................................. 7915
Sum of peak zone CFM ........................................ 7921
Sensible heat ratio ............................................... 0.571
ft/Ton .................................................................... 116.4
BTU/(hr-ft) ........................................................... 103.1
Water flow @ 10.0 F rise .................................... 98.02
Tons
MBH
MBH
CFM
CFM
CFM
gpm
Load occurs at ................................................... Jun 1500
OA DB / WB .................................................... 114.0 / 85.0
Entering DB / WB ............................................. 82.5 / 69.6
Leaving DB / WB .............................................. 45.1 / 44.6
Coil ADP ..................................................................... 40.9
Bypass Factor .......................................................... 0.100
Resulting RH ................................................................. 60
Design supply temp. ................................................... 55.0
Zone T-stat Check .................................................... 6 of 6
Max zone temperature deviation .................................. 0.0
F
F
F
F
%
F
OK
F
Central Heating Coil Sizing Data
Max coil load ........................................................ 107.8
Coil CFM at Dec 0800 ........................................... 4316
Max coil CFM ........................................................ 7915
Water flow @ 20.0 F drop ................................... 10.79
MBH
CFM
CFM
gpm
Load occurs at ................................................... Dec 0800
BTU/(hr-ft) ................................................................. 22.7
Ent. DB / Lvg DB .............................................. 31.5 / 54.6 F
Preheat Coil Sizing Data
No heating coil loads occurred during this calculation.
Supply Fan Sizing Data
Actual max CFM at Aug 1700 ............................... 7915 CFM
Standard CFM ....................................................... 7911 CFM
Actual max CFM/ft ................................................ 1.67 CFM/ft
Outdoor Ventilation Air Data
Fan motor BHP ........................................................... 0.00 BHP
Fan motor kW ............................................................. 0.00 kW
Fan static .................................................................... 0.00 in wg
CFM/person ................................................................ 6.87 CFM/person
Design airflow CFM ............................................... 1648 CFM
CFM/ft ................................................................... 0.35 CFM/ft
Hourly Analysis Program v4.50
Page 1 of 1
