Atlas Copco GA 30+ Instruction Book page 132

Type of cooling system
Single pass
Recirculating (with tower)
Closed loop
The table shows the recommended values. The values in bold are rejection limits.
130
Standard
5
< 10 / < 10
5
< 10 / < 10
3
< 10 / < 10
If additives are used in the cooling water, take into account that the cooling capacity will
change.
Δm = ((C - C ) * X) / (C
pw pa
with
Δm: change of mass flow of the coolant
C : specific heat capacity of water
pw
C : specific heat capacity of the additives
pa
X: the percentage of additives
Biology (CFU/ml)
7
7
5
*(1-X) + X*C ) * 100 %
pw pa
Instruction book
Energy recovery
3 5
< 10 / < 10
not applicable
3 5
< 10 / < 10
2920 7180 30