Question: Using the air tables in Appendix F-1E, determine the work, the efficiency, and the MEP for the cycle of a) Problem 9.20 b) Problem 9.21

Using the air tables in Appendix F-1E, determine the work, the efficiency, and the MEP for the cycle of
a) Problem 9.20
b) Problem 9.21 a.
Heat is added to the air in an Otto cycle in the amount of 500 Btu/lbm. The compression ratio for this engine is 10. Air enters the cycle at 14.7 psia and 65 8 F. Determine, using a cold-air analysis,
i) The temperature and pressure at the end of the combustion process
ii) The thermal efficiency of the cycle
iii) The work output of the cycle in ft-lbf
iv) The mean effective pressure

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a To find the net work the internal energy at each state will be determined State 1 T 1 525R Table F1E gives u 1 8935 Btulbm v r1 1555 State 2 v r2 v ... View full answer

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