A heat pump that operates on the ideal vapor-compression cycle with refrigerant-134a is used to heat a house and maintain it at 75F by using underground water at 50F as the heat source. The house is losing heat at a rate of 60,000 Btu/h. The evaporator and condenser pressures are 50 and 120 psia, respectively. Determine the power input to the heat pump and the electric power saved by using a heat pump instead of a resistance heater.
A heat pump that operates on the ideal vapor-compression cycle with refrigerant-134a is used to heat a house and maintain it at 75F by using underground water at 50F as the heat source. The house is losing heat at a rate of 60,000 Btu/h. The evaporator and condenser pressures are 50 and 120 psia, respectively. Determine the power input to the heat pump and the electric power saved by using a heat pump instead of a resistance heater.
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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Question
A heat pump that operates on the ideal vapor-compression
cycle with refrigerant-134a is used to heat a house
and maintain it at 75F by using underground water at 50F
as the heat source. The house is losing heat at a rate of 60,000
Btu/h. The evaporator and condenser pressures are 50 and 120
psia, respectively. Determine the power input to the heat pump
and the electric power saved by using a heat pump instead of
a resistance heater.
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