1. A Carnot engine working between 377°C and 37 C produces 120 kJ of work. Determine: (ii) The entropy change during heat rejection process. (Ans. (i) 229.5 kJ ; (ii) 0.353 kJ/K (iüi) 52.3%) (i) The heat added in kJ. (iii) The engine thermal efficiency.

1. A Carnot engine working between 377°C and 37 C produces 120 kJ of work. Determine: (ii) The entropy change during heat rejection process. (Ans. (i) 229.5 kJ ; (ii) 0.353 kJ/K (iüi) 52.3%) (i) The heat added in kJ. (iii) The engine thermal efficiency.

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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Concept explainers

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

1. A Carnot engine working between 377°C and 37°C produces 120 kJ of work. Determine :
(i) The heat added in kJ.
(iii) The engine thermal efficiency.
(ii) The entropy change during heat rejection process.
(Ans. (i) 229.5 kJ ; (ii) 0.353 kJ/K (iii) 52.3%)

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