Air within a piston-cylinder assembly executes a Carnot
Chapter 5, Problem 5.80(choose chapter or problem)
Air within a piston-cylinder assembly executes a Carnot heat pump cycle, as shown in Fig 5.16. For the cycle, \(T_{\mathrm{H}}=600 \mathrm{\ K}\) and \(T_{\mathrm{C}}=300 \mathrm{\ K}\). The energy rejected by heat transfer at 600 K has a magnitude of 250 kJ per kg of air. The pressure at the start of the isothermal expansion is 325 kPa. Assuming the ideal gas model for the air, determine (a) the magnitude of the net work input, in kJ per kg of air, and (b) the pressure at the end of the isothermal expansion, in kPa.
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