Sizing instructions
Air diffusers FAN CURVES
All plenums are vacuum formed from high strength, low weight ABS plastic. The diffuser consists of aluminum airfoil blades, individually adjustable from fully open to closed for maximum directional air control.
Fan Curve (cfm)
Use the Certified Air Delivery performance tables and the following procedure to properly size a Seeley International evaporative cooling unit for your application.
TBSI580 0.9 0.8 Static Pressure (IWG)
Static pressure inches water
1
0.7 0.6 0.5 0.4 0.3 0.2
0 3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
Airflow (cfm)
Airflow CFM
The performance or Cooling Capacity of an evaporative cooler is a function of both the air flow (CFM) and air discharge temperature. Static pressure, or duct system resistance, also impacts on air delivery and should be considered to correctly size the cooling unit.
Model#
Industry STD Rating CFM
Certified Air Delivery (CFM) (static pressure inches water)
Motor H.P
0.0
0.2
0.4
0.6
0.8
1.0
1.0
7200
6780
6120
5360
4560
3370
TBSI 580 10,000
4-sided high capacity commercial air diffuser
SUITABLE FOR MOST INDUSTRIES, INCLUDING: 1 Determine design Conditions
Warehouses
Storage areas
Repair / maintenance areas
Laundries / dry cleaners
Outside Dry-Bulb (DB)
Outside Wet-Bulb (WB)
Sports centers
Commercial kitchens
Inside Dry-Bulb (TI)
Institutional facilities
Agricultural facilities
2 Determine the design Sensible Heat Load (Btuh)
TBSI Series
0.1
Manufacturing plants
8-sided high capacity commercial air diffuser
Manufacturer Part #089249 Outlets
Free Area ft2
4
5.6
Manufacturer Part #089256
Velocity FPM
Volume CFM
Pressure IWG
Throw Feet
980
5500
0.14
16.5
1278
7200
0.2
19.5
1476
8200
0.3
23
Farm building – dairy / poultry / stables
World’s first high performance inverter axial evaporative cooler
Outlets
Free Area ft2
8
7
Velocity FPM
Volume CFM
Pressure IWG
980
6990
0.14
16.5
1278
9090
0.2
19.5
1476
10,488
0.3
23
A
A
B
B
Throw Feet
3 Determine the Cooler Leaving Air Temperature (LAT)
FEATURING ADVANCED
LAT = DB – [(DB-WB) EFF] where EFF = 0.87 for Chillcel media D
C
D
C
4 Determine the CFM required CFM=0.925 x Sensible Heat Load (TI –LAT) Model#
5 Determine the cooler(s) required by referring to the air flow charts to the right.
4-sided high capacity commercial air diffuser
A 34.8
B 20.7
C 11.6
Cat No B0784 REV C (1216) US
Note: All dimensions are in inches. Drawing shows the actual opening dimensions.
D
Model#
9.4
8-sided high capacity commercial air diffuser
A
B
C
D
42.7
13.6
12.2
9.4
Note: All dimensions are in inches. Drawing shows the actual opening dimensions.
Wise Australian buys Australian
Seeley International Americas ABN 23 054 687 035 Wise Australian buys Australian
1002 S 56th Avenue, Suite # 101, Phoenix AZ 85043 Phone 602 353 8066
Fax 602 353 8070
Email marketing@seeleyinternational.com www.seeleyinternational.com Information in this brochure was correct at the time of preparation. E & OE
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