A reciprocating compressor draws in 500 gal per minute of air whose density is 0.079 Ibm/cu ft and discharges it with density of 0.304 Ibm/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 and the heat transferred from the air by cooling is 20 Btu/lbm. Determine the work on the air in Btu/min and in hp.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A reciprocating compressor draws in 500 gal per minute of air whose density is
0.079 Ibm/cu ft and discharges it with density of 0.304 Ibm/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 and the heat transferred from the air by cooling is 20 Btu/lbm. Determine the
work on the air in Btu/min and in hp.
Transcribed Image Text:A reciprocating compressor draws in 500 gal per minute of air whose density is 0.079 Ibm/cu ft and discharges it with density of 0.304 Ibm/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 and the heat transferred from the air by cooling is 20 Btu/lbm. Determine the work on the air in Btu/min and in hp.
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