A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lb/cu ft and discharges it with a density of 0.304 lb/cu ft. At the suction, p1 = 15 psia; at discharge, p2 = 80 psia. The increase in the specific internal energy is 33.8 Btu/lb,m. Determine the work on the air in Btu/min and in hp. Neglect change in kinetic energy.

Elements Of Electromagnetics
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2. A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079
lb/cu ft and discharges it with a density of 0.304 lbm/cu ft. At the suction, p1 = 15 psia; at
discharge, p2 = 80 psia. The increase in the specific internal energy is 33.8 Btu/lbm. Determine
the work on the air in Btu/min and in hp. Neglect change in kinetic energy.
Transcribed Image Text:2. A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lb/cu ft and discharges it with a density of 0.304 lbm/cu ft. At the suction, p1 = 15 psia; at discharge, p2 = 80 psia. The increase in the specific internal energy is 33.8 Btu/lbm. Determine the work on the air in Btu/min and in hp. Neglect change in kinetic energy.
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