The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process, and a temperature of 750 K at the end of the expansion process. The compression ratio of the cycle is 10. By accepting that
The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process, and a temperature of 750 K at the end of the expansion process. The compression ratio of the cycle is 10. By accepting that
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process, and a temperature of 750 K at the end of the expansion process. The compression ratio of the cycle is 10. By accepting that specific heats do not change with temperature,
a) Find the highest temperature (K) of the cycle.
b) Find the amount of heat (kJ / kg) entering the cycle. c) Find the thermal efficiency of the cycle.
d) Calculate the average effective pressure (kPa).
(Cp 1.005 kJ / kg.K, c = 0.718 kJ / kg.K, R = 0.287
kJ / kg.K, k = 1.4)
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