A compressor draws in 0.25 m /s of air whose density is 1.26 kg/m³ and discharges it with a density of 4.87 kg/m³. At the suction, P, = 103.4 kPaa; at the discharge, P2 = 551.4 kPaa. The increase in the specific internal energy is 78.63 kJ/kg, and the heat from the air by cooling is 30.24 kJ/kg. Neglecting changes of potential and kinetic energy, determine the work on air in kW, BTU/min, and Hp.

Elements Of Electromagnetics
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1. A compressor draws in 0.25 m³/s of air whose density is 1.26 kg/m³ and discharges it with a
density of 4.87 kg/m³. At the suction, P1 = 103.4 kPaa; at the discharge, P2 = 551.4 kPaa. The
increase in the specific internal energy is 78.63 kJ/kg, and the heat from the air by cooling is
30.24 kJ/kg. Neglecting changes of potential and kinetic energy, determine the work on air in
kW, BTU/min, and Hp.
Transcribed Image Text:1. A compressor draws in 0.25 m³/s of air whose density is 1.26 kg/m³ and discharges it with a density of 4.87 kg/m³. At the suction, P1 = 103.4 kPaa; at the discharge, P2 = 551.4 kPaa. The increase in the specific internal energy is 78.63 kJ/kg, and the heat from the air by cooling is 30.24 kJ/kg. Neglecting changes of potential and kinetic energy, determine the work on air in kW, BTU/min, and Hp.
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