Atlas Copco GA 26 VSD+ User Manual

Suspended solids (ppm)
Type of cooling system Standard Energy recovery
Single pass < 10 < 1
Recirculating (with tower) < 10 not applicable
Closed loop < 10 < 1
12. Oil or grease
< 1 ppm (rejection value)
13. Biology
If biology is present, it must be aerobic. Anaerobic biology (in closed systems) must be
avoided.
Biology (CFU/ml)
Type of cooling system Standard Energy recovery
Single pass
< 10
5
/ < 10
7
< 10
3
/ < 10
5
Recirculating (with tower)
< 10
5
/ < 10
7
not applicable
Closed loop
< 10
3
/ < 10
5
< 10
3
/ < 10
5
The table shows the recommended values. The values in bold are rejection limits.
If additives are used in the cooling water, take into account that the cooling capacity will
change.
Δm = ((C
pw
- C
pa
) * X) / (C
pw
*(1-X) + X*C
pa
) * 100 %
with
Δm: change of mass flow of the coolant
C
pw
: specific heat capacity of water
C
pa
: specific heat capacity of the additives
X: the percentage of additives
5.1.6 Energy recovery data
Reference conditions
See section Reference conditions and limitations.
Effective working pressure
See section Compressor data for the normal working pressure.
Maximum allowed pressure of the heat exchanger
Oil side 15 bar (217 psi)
Water side 10 bar (145 psi)
Reading settings
In addition to other data, the following temperatures can be read on the controller display:
For air-cooled units:
Instruction book
2920 7110 05 75

Atlas Copco GA 26 VSD+ Specifications

General

Brand	Atlas Copco
Model	GA 26 VSD+
Category	Air Compressor
Language	English