QI: A dense closed cycle refrigeration system working hetween 4 bar and 16 bar extracts 126 MJ of heat per hour. The air enters the compressor at 5°C and into the expander at 20°C. The isentropic efficiency of the compressor is 80% and. The isentropic efficiency of the expander is 85%. The compressor and expander are single acting. Assuming the unit runs at 300 rpm, find out 1. Power required to run the unit; 2. Bore of the compressor; and 3. Refrigeration capacity in tonnes of refrigeration (TR). For air, cp-1 Kj/Kg.K and R-287 j/Kg.K.
QI: A dense closed cycle refrigeration system working hetween 4 bar and 16 bar extracts 126 MJ of heat per hour. The air enters the compressor at 5°C and into the expander at 20°C. The isentropic efficiency of the compressor is 80% and. The isentropic efficiency of the expander is 85%. The compressor and expander are single acting. Assuming the unit runs at 300 rpm, find out 1. Power required to run the unit; 2. Bore of the compressor; and 3. Refrigeration capacity in tonnes of refrigeration (TR). For air, cp-1 Kj/Kg.K and R-287 j/Kg.K.
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:QI: A dense closed cycle refrigeration system working between 4 bar and 16 bar
extracts 126 MJ of heat per hour. The air enters the compressor at 5°C and into the
expander at 20°C. The isentropic efficiency of the compressor is 80% and. The
isentropic efficiency of the expander is 85%. The compressor and expander are
single acting. Assuming the unit runs at 300 rpm, find out 1. Power required to run
the unit; 2. Bore of the compressor; and 3. Refrigeration capacity in tonnes of
refrigeration (TR). For air, ep-1 Kj/Kg.K and R-287 j/Kg.K.
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