Answered: An engine rated at 20 kW uses 1.5 kg of…

An engine rated at 20 kW uses 1.5 kg of fuel in 1000 s. If the enthalpy (energy content) of the fuel is 53,300 kJ/kg, determine the efficiency of the engin

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter31: Gas Heat

Section: Chapter Questions

Problem 5RQ: The specific gravity of natural gas is A. 0.08. B. 1.00. C. 0.42. D. 0.60.

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Question

An engine rated at 20 kW uses 1.5 kg of fuel in 1000 s. If the enthalpy
(energy content) of the fuel is 53,300 kJ/kg, determine the efficiency of
the engine.

answer = 25%

please show all workings

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