A heat engine, operating between reservoirs at temperatures of 372 deg C and 17 deg C, performs 3.2 kJ of net work, and rejects 13.1 kJof heat. What is the actual thermal efficiency (%)?

Answered: A heat engine, operating between…

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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A heat engine, operating between reservoirs at temperatures of 372 deg C and 17 deg C, performs 3.2 kJ of net work, and rejects 13.1 kJ
of heat. What is the actual thermal efficiency (%)?

Expert Solution

Step 1

When the engine is working at any process or other than reversible process than the efficiency of the engine is depends on the net work done and heat input.

When the engine is working reversible than the efficiency is depends on the temperature limits and this efficiency is hypothetical efficiency.

In the given problem, the actual efficiency should be considered which depends on the net work done and heat input.

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