Atlas Copco GA 11+ Instruction Book page 94

Temperature input
Water inlet temperature of energy recovery
Water inlet temperature of energy recovery
Energy recovery water outlet temperature
Energy recovery water outlet temperature
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
Recoverable energy
Recoverable energy
Water flow
Pressure drop
Water flow
Pressure drop
Temperature at inlet
Temperature at inlet
Temperature at outlet
Temperature at outlet
Data for high temperature rise/low water flow systems
Parameter
Recoverable energy
Recoverable energy
Water flow
Pressure drop
Water flow
Pressure drop
Temperature at inlet
Temperature at inlet
Temperature at outlet
Temperature at outlet
92
Unit
+
GA 11 GA 15
kW 9.7 13.2
hp 13.2 18
l/min 13.9 18.9
mbar 50 75
cfm 0.5 0.7
in WC 20 30
˚C 50 50
˚F 122 122
˚C 60 60
˚F 140 140
Unit +
GA 11 GA 15
kW 9.7 13.2
hp 13.2 18
l/min 3.5 4.7
mbar 10 25
cfm 0.1 0.1
in WC 4 10
˚C 20 20
˚F 68 68
˚C 60 60
˚F 140 140
Minimum
setting
˚C 0
˚F 32
˚C 0
˚F 32
+ +
GA 18 GA 22
15.8 19.4
21.5 26.3
22.7 27.8
150 170
0.8 1
60 68
50 50
122 122
60 60
140 140
+ +
GA 18 GA 22
15.8 19.4
21.5 26.3
5.7 6.9
25 25
0.2 0.2
10 10
20 20
68 68
60 60
140 140
Instruction book
Nominal Maximum
setting setting
50 99
122 210
60 99
60 210
GA 30
+ +
GA 26
22.9 26.4
31.1 35.9
32.8 37.9
250 330
1.2 1.3
100 132
50 50
122 122
60 60
140 140
+ + GA 30
GA 26
22.9 26.4
31.1 35.9
8.2 9.5
35 35
0.3 0.3
14 14
20 20
68 68
60 60
140 140
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