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3.8 Compressor capacity steps
Model
252
312
432
492
592
752
852
1002
1202
3.9 Correction tables
3.9.1 Operation with glycol
Glycol percentage
Freezing point (°C)
10
20
30
40
50
CCF: Capacity correction factor
WFCF: Water flow correction factor
The water flow rate and pressure drop correction factors are to be applied directly to the values given for operation without glycol. The water
flow rate correction factor is calculated in order to maintain the same temperature difference as that which would be obtained without glycol.
The pressure drop correction factor takes into account the different flow rate obtained from the application of the flow rate correction factor.
3.9.2 Correction tables different ∆t
Water temperature diff.(°C)
CCCP
IPCF
CCCP = Cooling capacity correction factor
3.9.3 Correction tables different Fouling factors
Fouling factor
CCCP
IPCF
CCCP = Cooling capacity correction factor
NUMBER of COMPRESSORS
CCF
-3.2
0.985
-7.8
0.98
-14.1
0.97
-22.3
0.965
-33.8
0.955
IPCF: Input power correction factor
PDCF: Pressure drops correction factor
3
0.99
0.99
IPCF = Input power correction factor
0.00005
1
1
IPCF = Input power correction factor
1
50%
50%
50%
50%
50%
50%
50%
50%
50%
IPCF
1
0.99
0.98
0.97
0.965
5
1
1
0.0001
0.98
0.98
18
2
50%
50%
50%
50%
50%
50%
50%
50%
50%
WFCF
PDCF
1.02
1.08
1.05
1.12
1.09
1.22
1.14
1.25
1.2
1.33
8
1.02
1.01
0.0002
0.94
0.95
Rev. A 11-2020
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