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Bottom part only please, Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the spontaneous flow of heat resulting from finite temperature differences.

Bottom part only please, Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the spontaneous flow of heat resulting from finite temperature differences.

Elements Of Electromagnetics
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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Bottom part only please, Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the spontaneous flow of heat resulting from finite temperature differences.
b) If one mole of air/fuel mixture (rigid diatomic gas) is initially at 20 °C, is compressed and expanded 7-fold as part of the Otto cycle, and 4 kJ of heat is generated by burning the air/fuel mixture, calculate: (i) the temperature after each stage of the Otto cycle; (ii) the heat absorbed/expelled during each stage of the cycle; and (iii) the efficiency of the Otto cycle. Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the spontaneous flow of heat resulting from finite temperature differences.
Transcribed Image Text:b) If one mole of air/fuel mixture (rigid diatomic gas) is initially at 20 °C, is compressed and expanded 7-fold as part of the Otto cycle, and 4 kJ of heat is generated by burning the air/fuel mixture, calculate: (i) the temperature after each stage of the Otto cycle; (ii) the heat absorbed/expelled during each stage of the cycle; and (iii) the efficiency of the Otto cycle. Discuss why the petrol engine is irreversible in terms of entropy and work lost due to the spontaneous flow of heat resulting from finite temperature differences.
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