Using Isentropic Processes/EfficienciesAir at 1 atm, 520°R
Chapter 6, Problem 152P(choose chapter or problem)
Air at 1 atm, \(520^{\circ} \mathrm{R}\) enters a compressor operating at steady state and is compressed adiabatically to 3 atm. The isentropic compressor efficiency is 80%. Employing the ideal gas model with k = 1.4 for the air, determine for the compressor (a) the power input, in Btu per lb of air flowing, and (b) the amount of entropy produced, in \(\mathrm{Btu} /{ }^{\circ} \mathrm{R}\) per lb of air flowing. Ignore kinetic and potential energy effects.
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