Question

A dense closed cycle air refrigeration system working between 4 bar and 16 bar extracts 126 mj of energy per hour. the air enters the compressor at 5 o c and into expander at 20 o

c. assuming the unit runs at 300 rpm, find a)po9wer required to run the compressor,

b.bore,

c.efficiency of the compressor,

d.refrigeration capacity intr. compressor and expander are double acting and stroke (l) fore compressor and expander = 30 cm. mechanical efficiency of the expander = 85%. assume the compression and expansion are isentropic.

Answer 1

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