An ideal gas refrigeration cycle uses air as the working fluid. The air is at 5 psia and -14°F as it enters the compressor with a compression ratio of 4. The temperature at the turbine entrance is 110°F. Determine this cycle’s COP when the compressor isentropic efficiency is 87 percent, the turbine isentropic efficiency is 94 percent, and the pressure drop across each heat exchanger is 1 psia. Use constant specific heats at room temperature. (Given: The properties of air at room temperature are cp = 0.240 Btu/lbm-R and k = 1.4.)
An ideal gas refrigeration cycle uses air as the working fluid. The air is at 5 psia and -14°F as it enters the compressor with a compression ratio of 4. The temperature at the turbine entrance is 110°F. Determine this cycle’s COP when the compressor isentropic efficiency is 87 percent, the turbine isentropic efficiency is 94 percent, and the pressure drop across each heat exchanger is 1 psia. Use constant specific heats at room temperature. (Given: The properties of air at room temperature are cp = 0.240 Btu/lbm-R and k = 1.4.)
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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11-9 Gas Cycles - Applied
An ideal gas refrigeration cycle uses air as the working fluid. The air is at 5 psia and -14°F as it enters the compressor with a compression ratio of 4. The temperature at the turbine entrance is 110°F. Determine this cycle’s COP when the compressor isentropic efficiency is 87 percent, the turbine isentropic efficiency is 94 percent, and the pressure drop across each heat exchanger is 1 psia. Use constant specific heats at room temperature.
(Given: The properties of air at room temperature are cp = 0.240 Btu/lbm-R and k = 1.4.)
Question: The COP of the cycle is ______
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