ACA Series selection
ROTARY SCREW COMPRESSORS (200 O F @125 PSI & 36% relative humidity)
Model Size Selection *Approach Temperature o F (T
Compressor Horse Power (HP)
Average Air Discharge Cubic feet per minute (SCFM)
2 - T a )
5 o F
10 o F
15 o F
20 o F
15 20 30 40 60 75
60 80
ACA - 3302 ACA - 3302 ACA - 3362 ACA - 3362 ACA - 4362 ACA - 6362 ACA - 6362 ACA - 6422 ACA - 6422 ACA - 6482 ACA - 6482 ACA - 6542 ACA - 6542 ACA - 6602 ACA - 6602
ACA - 3242 ACA - 3242 ACA - 3302 ACA - 3302 ACA - 3362 ACA - 4362 ACA - 6362 ACA - 6362 ACA - 6362 ACA - 6422 ACA - 6422 ACA - 6482 ACA - 6482 ACA - 6482 ACA - 6542
ACA - 3242 ACA - 3242 ACA - 3242 ACA - 3302 ACA - 3302 ACA - 3362 ACA - 3362 ACA - 4362 ACA - 6362 ACA - 6362 ACA - 6362 ACA - 6422 ACA - 6422 ACA - 6422 ACA - 6482
ACA - 3182 ACA - 3182 ACA - 3242 ACA - 3242 ACA - 3302 ACA - 3302 ACA - 3362 ACA - 3362 ACA - 4362 ACA - 6362 ACA - 6362 ACA - 6362 ACA - 6362 ACA - 6422 ACA - 6422
130 165 250 350 470 590 710 945
100 125 150 200 250 300 350 400 500
1160 1450 1630 1830 2150
* Approach Temperature the desired outlet temperature of the compressed gas minus the inlet ambient air temperature of the external air flowing over the coil.
T 2 - Outlet gas temperature T a - Ambient temperature
Example of a model:
ACA - 3242 - 3 - __ -____ - ____
Model
Coating
ACA
Size
Tubing
Blank = Enamel (standard) G = Galvanize (cabinet) T = Heresite (core) X = Epoxy (core & cabinet) STS = Stainless Steel
Number of Passes 1P = 1 pass 2P = 2 pass
Blank = Copper U = 90/10 Cu Ni C = Carbon Steel SS = Stainless Steel
Drive Type
N = no motor 1 = single phase 3 = three phase
Connections Blank = NPT A = ANSI 150#RF Flange
1EXP = single phase 3EXP = three phase 5 = 575 Volt
Using the performance graphs (see page 230) The Flow vs. Fs graph is calculated based upon SCFM units. To convert volumetric Actual Cubic Feet per Minute (ACFM) into Standard Cubic Feet per Minute (SCFM) see page 213 application 3. To select a model, locate the flow rate in SCFM located at the bottom of the graph. Proceed upward on the graph until the SCFM flow rate intersects with the calculated
Fs. The curve closest, on or above the intersection point is the proper selection. Using the one pass graph or two-pass graph depends upon pressure differential, flow, and performance requirements. The actual surface area for one or Two Pass units is the same. However, the airflow velocity in the tubes increases with the number of passes giving slightly higher pressure differentials and better cooling performance.
note: AIHTI reserves the right to make reasonable design changes without notice.
232
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355 American Industrial Drive LaCrosse, VA 23950
tel: 434-757-1800
fax: 434-757-1810
email: sales@aihti.com
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