Atlas Copco GA 26+

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 60 99
Energy recovery water outlet temperature ˚F 32 60 210
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/high water flow systems
Parameter Unit
GA 11
+
GA 15
+
GA 18
+
GA 22
+
GA 26
+
GA 30
Recoverable energy kW 9.7 13.2 15.8 19.4 22.9 26.4
Recoverable energy hp 13.2 18 21.5 26.3 31.1 35.9
Water flow l/min 13.9 18.9 22.7 27.8 32.8 37.9
Pressure drop mbar 50 75 150 170 250 330
Water flow cfm 0.5 0.7 0.8 1 1.2 1.3
Pressure drop in WC 20 30 60 68 100 132
Temperature at inlet ˚C 50 50 50 50 50 50
Temperature at inlet ˚F 122 122 122 122 122 122
Temperature at outlet ˚C 60 60 60 60 60 60
Temperature at outlet ˚F 140 140 140 140 140 140
Data for high temperature rise/low water flow systems
Parameter Unit
GA 11
+
GA 15
+
GA 18
+
GA 22
+
GA 26
+
GA 30
Recoverable energy kW 9.7 13.2 15.8 19.4 22.9 26.4
Recoverable energy hp 13.2 18 21.5 26.3 31.1 35.9
Water flow l/min 3.5 4.7 5.7 6.9 8.2 9.5
Pressure drop mbar 10 25 25 25 35 35
Water flow cfm 0.1 0.1 0.2 0.2 0.3 0.3
Pressure drop in WC 4 10 10 10 14 14
Temperature at inlet ˚C 20 20 20 20 20 20
Temperature at inlet ˚F 68 68 68 68 68 68
Temperature at outlet ˚C 60 60 60 60 60 60
Temperature at outlet ˚F 140 140 140 140 140 140
Instruction book
92 2920 7118 31