Solution: Air enters a compressor operating at steady state
Chapter 9, Problem 9.78(choose chapter or problem)
Air enters a compressor operating at steady state at \(15 \mathrm{lbf} / \mathrm{in}^{2}\), \(60^{\circ} \mathrm{F}\), with a volumetric flow rate of \(5000 \mathrm{ft}^{3} / \mathrm{min}\). The compression occurs in two stages, with each stage being a polytropic process with n = 1.3. The air is cooled to \(100^{\circ} \mathrm{F}\) between the stages by an intercooler operating at \(40 \mathrm{lbf} / \mathrm{in}^{2}\) Air exits the compressor at \(120 \mathrm{lbf} / \mathrm{in}^{2}\), Determine, in Btu per min
(a) the power and heat transfer rate for each compressor stage.
(b) the heat transfer rate for the intercooler.
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