Atlas Copco GA 30+, Instruction Book

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Temperature input Minimum
setting Nominal
setting Maximum
setting
Water inlet temperature of energy recovery ˚C 0 50 99
Water inlet temperature of energy recovery ˚F 32 122 210
Energy recovery water outlet temperature ˚C 0 Depends on
application 99
Energy recovery water outlet temperature ˚F 32 Depends on
application 210
To modify a setting, consult the relevant section in the description of the controller.
Recoverable energy
The recoverable energy can be calculated from:
RECOVERED ENERGY (kW) = 4.2 x water flow (l/s) x water temperature rise (˚C)
In the tables below, typical examples are given.
Data for low temperature rise/low water flow systems
Parameter Unit
GA 30
+ GA 37 GA 45
Recoverable energy kW 27.5 32.5 39.5
Recoverable energy hp 36.8 43.5 53
Water flow l/min 39.4 46.6 56.6
Water flow cfm 1.4 1.6 2
Temperature at inlet ˚C 50 50 50
Temperature at inlet ˚F 122 122 122
Temperature at outlet ˚C 60 60 60
Temperature at outlet ˚F 140 140 140
Data for high temperature rise/low water flow systems
Parameter Unit
GA 30
+ GA37 GA 45
Recoverable energy kW 27.5 32.5 39.5
Recoverable energy hp 36.8 43.5 53
Water flow l/min 5.5 6.5 7.9
Water flow cfm 0.19 0.23 0.28
Temperature at inlet ˚C 20 20 20
Temperature at inlet ˚F 68 68 68
Temperature at outlet ˚C 92 92 92
Temperature at outlet ˚F 197 197 197
Instruction book
2920 7180 30 125