Example 2-2 An inventor produces a motorcycle that delivers 90 hp while burning fuel at the rate of 14.5 lbm/h. The heating value of the fuel is 20,400 Btu/lbm and the maximum engine temperature is 520°F. Take ambient air temperature to be 70°F. Is this cycle possible or impossible? Support your result with calculations. Solution: The heat added to the engine is 5BtulbmBtu2040014.52.96 10lbmhhHQ⎛⎞⎛⎞==×⎜⎟⎜⎟⎝⎠⎝⎠±The claimed efficiency of the motorcycle is 590hp0.774
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This homework help was uploaded on 04/07/2008 for the course MANE 4010 taught by Professor Kaminski during the Spring '08 term at Rensselaer Polytechnic Institute.