ClimaCool IOM AR2 SERIES - Manual (Page 46)

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2 . From the Performance Tables: CAPACITY: 27 .2 TONS; KW:
30 .6
3 . First find the water flow and pressure drop for pure water as
In the previous example .
GPM = (24)(27 .2)/10 = 65 .3 GPM
From Fig . 1, read pressure drop from mid . Curve as:
Pressure drop = 8 .5 ft . of water
4 . To convert performance data for pure water to data using 30%
Propylene Glycol, record the adjustment multipliers from Fig .
AM-1 & Fig . AM-2 on page 42:
CAPACITY factor: 0 .97
KW factor: 0 .988
GPM factor: 1 .022 Pressure Drop factor: 1 .20
5 . Calculate chiller performance using 30% Propylene Glycol by
multiplying the chiller performance data for pure water by the
adjustment factors as follows:
CAPACITY: 27 .2 x 0 .97 = 26 .38 TONS
KW: 30 .6 x 0 .988 = 30 .23 KW
GPM: 65 .3 x 1 .022 = 66 .74
GPM Pressure Drop: 8 .5 x 1 .20 = 10 .2 ft . of water
ClimaCool Selection Procedure