Ventilating air (cu.m/min.) H = H = V = D = = SH = = dT= = ECA = =
750
(H/(D*SH*DT))+Engine Combustion Air Total Heat Radiation in (KW) (for engine + generator) (Ref. To specs. Sheet) 1 2 5 .5 Ventilating air (cu.m/min.) Density of air (kg/m3) 1 .0 7 Specific heat of air ( kw.min/Kg.C) 0 .0 1 7 Temp. Rise inside engine room ( deg.C) 10 Engine Combustion Air (Exhaust gas flow ) (Ref. To specs. Sheet) 12 0 7,182
17.6 1056
Radiator fan air flow =
37,256
THEN :Ventilating air ( V ) =
810
V =
28,564
INTAKE LOUVER SIZE
Consider Air Velocity = Total Air Quantity = Louver Area =
1 00 0 2 8 ,5 6 4 29 2.7
Important Notes :-
1- clean , cool , dry air circulates circulates around around the switchgear switchgear , flows through the rear of the generator , across the engine , and discharges through the radiator 2- Cool air shoul always be available for the engine air cleaner (air filter ). 3- For best ventilation ventilation results results , air should should flow first first across the generator then to both sides of the engine . 4- Inlets located located at the end of the room will provide provide adequate adequate ventilation only to the engine nearast the inlet. 5- Air flow restriction should be 0.5 inch W.G
