Ask Question
22 April, 14:25

What is the maximum efficiency of a heat engine whose operating temperatures are 590? c and 325? c?

+4
Answers (1)
  1. 22 April, 15:38
    0
    The maximum possible efficiency, i. e the efficiency of a Carnot engine, is give by the ratio of the absolute temperatures of hot and cold reservoir.

    η_max = 1 - (T_c/T_h)

    For this engine:

    η_max = 1 - [ (20 + 273) K / (600 + 273) K ] = 0.66 = 66%

    The actual efficiency of the engine is 30%, i. e.

    η = 0.3 ∙ 0.664 = 0.20 = 20 %

    On the other hand thermal efficiency is defined as the ratio of work done to the amount of heat absorbed from hot reservoir:

    η = W/Q_h

    So the heat required from hot reservoir is:

    Q_h = W/η = 1000J / 0.20 = 5000J
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “What is the maximum efficiency of a heat engine whose operating temperatures are 590? c and 325? c? ...” in 📘 Physics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers