Ask Question
8 October, 08:21

A completely reversible heat pump produces heat ata rate of 300 kW to warm a house maintained at 24°C. Theexterior air, which is at 7°C, serves as the source. Calculate the rate of entropy change of the two reservoirs and determine if this heat pump satisfies the second law according to the increase of entropy principle.

+5
Answers (1)
  1. 8 October, 09:20
    0
    Change in entropy S = 0.061

    Second law of thermodynamics is satisfied since there is an increase in entropy

    Explanation:

    Heat Q = 300 kW

    T2 = 24°C = 297 K

    T1 = 7°C = 280 K

    Change in entropy =

    S = Q (1/T1 - 1/T2)

    = 300 (1/280 - 1/297) = 0.061

    There is a positive increase in entropy so the second law is satisfied.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A completely reversible heat pump produces heat ata rate of 300 kW to warm a house maintained at 24°C. Theexterior air, which is at 7°C, ...” in 📘 Engineering 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