An ideal Brayton refrigeration cycle has a compressor pressure ratio of 7. At the compressor inlet, the pressure and temperature of the entering air are 22 lbf/in.² and 450°R, respectively. The temperature at the inlet of the turbine is 680°R. The compressor and turbine have esentropic efficiencies of 75% and 0.88%, respectively. For a refrigerating capacity of 16.5 tons, determine: (a) the mass flow rate of the refrigerant, in lb/min. (b) the net power input, in Btu/min. (c) the coefficient of performance.
An ideal Brayton refrigeration cycle has a compressor pressure ratio of 7. At the compressor inlet, the pressure and temperature of the entering air are 22 lbf/in.² and 450°R, respectively. The temperature at the inlet of the turbine is 680°R. The compressor and turbine have esentropic efficiencies of 75% and 0.88%, respectively. For a refrigerating capacity of 16.5 tons, determine: (a) the mass flow rate of the refrigerant, in lb/min. (b) the net power input, in Btu/min. (c) the coefficient of performance.
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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Transcribed Image Text:An ideal Brayton refrigeration cycle has a compressor pressure ratio of 7. At the compressor inlet, the
pressure and temperature of the entering air are 22 lbf/in.² and 450°R, respectively. The temperature
at the inlet of the turbine is 680°R. The compressor and turbine have esentropic efficiencies of 75%
and 0.88%, respectively.
For a refrigerating capacity of 16.5 tons, determine:
(a) the mass flow rate of the refrigerant, in lb/min.
(b) the net power input, in Btu/min.
(c) the coefficient of performance.
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