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BAR 0543679 - Caterpillar



0543679 BAR Caterpillar parts BAR
Rating:
31
Alternative (cross code) number:
CA0543679
054-3679
0543679
Caterpillar 0543679 BAR
Weight: 0.01 pounds 0 kg.

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As a rule of thumb, the installer should provide ventilation air flow of about 8 cfm (.22656 m3/min) per installed horsepower. If combustion air is to be drawn from the engine room increase that figure to 91/4cfm (.26196 m3/min).If you wish to compute more exact engine room air requirements it is necessary to determine the following factors:H = Heat radiated to the engine room This data is available from the TMI system for Caterpillar engines. Add in 4 Btu/min per generated 0.07032 kW for the normal maximum auxiliary generator load. Miscellaneous heat loads from other sources (pumps, motors, etc.) can be ignored if they are not exceptional.Ta = Maximum ambient air temperature the vessel is expected to operate in during its whole life. [Usually assume 110°F (43.3°C).]Sa = Density of the air at the maximum ambient air temperature.Density of Air at Various Temperatures
dT = Maximum desired air temperature in the engine room. (Usually assume 10°F (5.6°C) rise above ambient)When these factors have been determined, the ventilation air requirements in cubic feet per minute (cfm) can be calculated by the following formula:Qa = Volume of inlet air required in cfm (m3/min)H = Radiated heat [btu/min (kW)]Sa = Inlet air density [lbs/cu. ft. (kg/m3)]0.24 = Specific heat of air (btu/lbs/°F)0.017 = Specific heat of air (kW min/kg °C)dT = Temperature rise from ambient air to engine air [°F(°C)]


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