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Forums
Engineering
Mechanical Engineering
Using Fuel as a Combustion Engine Coolant?
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[QUOTE="jrmichler, post: 6132884, member: 638574"] Start a problem like this with some ball part calculations. I'll suggest some assumptions and a path to help you get started. 1) Assume a power, say 100 hp. 2) Assume typical efficiency of 0.45 lb of fuel per horsepower-hour for a small (automotive size) gasoline engine. 3) Assume 1/3 of the fuel goes to work (power from the crankshaft), 1/3 as heat out the exhaust, and 1/3 as heat out the water jacket. 4) Assume typical operating temperature of 190 deg F. 5) Assume a starting temperature (tank temperature) for the fuel. 6) Choose your fuel, and search the specific heat. 7) How much heat goes into the water jacket? 8) What is the fuel burn rate? 9) Given the starting temperature, ending temperature, and specific heat of the fuel, how much heat is absorbed? 10) Compare. [/QUOTE]
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Using Fuel as a Combustion Engine Coolant?
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