Determine the mean effective pressure of an ideal Otto cycle that uses air as the working fluid if its state at the beginning of the compression is 15 psia and 60°F, its temperature at the end of the combustion is 1500°F, and its compression ratio is 9. Use constant specific heats at room temperature. The properties of air at room temperature are R = 0.3704 psia-ft³/lbm-R, cp = 0.240 Btu/lbm-R, cv= 0.171 Btu/lbm-R, and k=1.4. The mean effective pressure is 6.497 psia.

Determine the mean effective pressure of an ideal Otto cycle that uses air as the working fluid if its state at the beginning of the compression is 15 psia and 60°F, its temperature at the end of the combustion is 1500°F, and its compression ratio is 9. Use constant specific heats at room temperature. The properties of air at room temperature are R = 0.3704 psia-ft³/lbm-R, cp = 0.240 Btu/lbm-R, cv= 0.171 Btu/lbm-R, and k=1.4. The mean effective pressure is 6.497 psia.

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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IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.

Question

Determine the mean effective pressure of an ideal Otto cycle that uses air as the working fluid if its state at the beginning of the
compression is 15 psia and 60°F, its temperature at the end of the combustion is 1500°F, and its compression ratio is 9. Use constant
specific heats at room temperature. The properties of air at room temperature are R = 0.3704 psia-ft3/lbm-R, cp= 0.240 Btu/lbm-R, cv=
0.171 Btu/lbm-R, and k = 1.4.
The mean effective pressure is
6.497 psia.

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