Perkins 415GM Installation Manual page 24

Chapter 4
Engine model
Heat rejection
Jacket water - Engine Btu/min
Aftercooler - Intercooler Btu/min
Water flow rate, thermostat fully open
Engine US gals/min
Intercooler US gals/min
Max coolant temp
(from grid cooler)
Intercooler
As a general rule the pressure drop across the grid cooler should be between 14 - 28kPa (2 to 4 psi) this can
be acheived by keeping the water velocity below 0.46m/s (5ft/s).
The above table shows data that will satisfy all world wide operational conditions. However, if the applica-
tion is known to be only operating in areas where the sea water temperature is unlikely to exceed 25
when sizing the grid coolers the maximum coolant temperature returning to the intercooler of 43
used and 75 C coolant temperatures returning to the engine circuit.
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Page 18
Heat rejection data (cont.)
4.4GM
2440
kW 42.9
-
kW -
39.6
Litres/min 150
-
Litres/min -
Engine F 140
o
C 60
o
F -
o
C -
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4.4TGM 4.4TWGM 4.4TW2GM
2838 3338
49.9 58.7
- 774
- 13.6
39.6 39.6
150 150
- 27
- 102
140 140
60 60
- 100
- 38
6TG2AM
4172 5198
73.3 91.4
956 -
16.8 -
39.6 22-40
150 77-150
27 -
102 -
140 140
60 60
100 -
38 -
C could be
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N38143
6TWGM
6541
115
1570
27.6
20-40
77-150
20
91
140
60
100
38
C, then
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