KAESER ESD.2C - Cooling Water Temperature Rise 15 K; Tab. 21 Cooling Water Quality; Tab. 22 Cooling Water Temperature (ΔT=10 K); Water Cooling (Bundled Pipe Heat Exchanger)

Characteristics/content Closed cooling sys‐
tem
Open cooling system
Chlorides (Cl) [mg/l] <100 <100
Iron (Fe), dissolved [mg/l] <0,5 <0,2
Sulphate (SO
4
) [mg/l] <300 <300
HCO
3
/SO
4
ratio >1 >1
Electrical conductivity [µS/cm] 10–800 10–1500
Ammonia (NH
4
+
) [mg/l]
<1 <1
Manganese (Mn), dissolved [mg/l] <0,1 <0,1
Glycol [%] 20–40 —
Solids (particle size) [mm] <0,1 <0,1
Bacterial count [CFU*/ml] 10 000 10 000
Suspended solids [ppm]
(portion of undissolved matter)
<20 <20
* CFU: colony-forming units
Tab. 21 Cooling water quality
2.15.2 Option K9
Water cooling (Bundled pipe heat exchanger)
The primary winding of the heat exchanger is connected to the machine. The specifications
refer to the secondary side of the heat exchanger.
2.15.2.1 Design data
Cooling water temperature rise 15 K
ESD 442
Maximum permissible in‐
let temperature [°C]
40
Flow rate [m
3
/h]
15.2
Pressure drop [bar] 1.2
Tab. 22 Cooling water temperature (ΔT=10K)
Heat exchanger specification
ESD 442
Material (Tube interior) CuNi10Fe
Maximum working over‐
pressure [bar]
10
Maximum permissible
outlet temperature [°C]
70
Maximum flow rate [m
3
/h]
16.3
2 Technical Specifications
2.15 Water cooling
ESD_2C_10357405_10–LIN_00 E
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2
13