EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
9th Edition
ISBN: 9781119321453
Author: Sonntag
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Textbook Question
Chapter 5, Problem 5.11P
A window−mounted air conditioner removes 3.5kJ from the inside of a home using 1.75 kJ work input. How much energy is released outside and what is its coefficient of performance?
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The cost of electricity to operate a compressor for one year can exceed the purchase price of the compressor.
With a 1 kW pump, the energy leakage per unit time is 0.6 kW for a 1 ℃ temperature difference between a house to be heated and the outside environment. Coefficient of performance of the heat pump used to keep this house at a constant temperature of 20 ℃; If it is up to the theoretical heat pump performance coefficient; What is the minimum outdoor temperature ℃ for this heat pump to meet its needs and be used?
A window-mounted air conditioner removes 2.1 kJ from the inside of a home using 1.75 kJ work
input. What is its coefficient of performance?
Note: thermodynamically, and air conditioner is the same thing as a refrigerator - it makes the
inside of a container (house, refrigerator) colder.
Chapter 5 Solutions
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
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