HW17 - 2 An inventor claims to have developed a device that...

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Spring 2006 1 ME 201 Thermodynamics Homework 17, Due Wednesday, 3/31/2006 1. Two kilograms of Refrigerant-134a is contained in a piston-cylinder system. It is initially at 160 kPa and 0 ° C and is compressed to saturated vapor at 0 ° C. The heat transfer from the cylinder is reported to be 30 kJ. Can this value be correct? What is the minimum work input required to carry out this process?
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Unformatted text preview: 2. An inventor claims to have developed a device that has an inlet flow of air at 20 ° C, 300 kPa, and 5 kg/s and two outlet flows, air at 60 ° C, 270 kPa and air at ° C, 270 kPa. He claims that there is no work or heat transfer involved in the device. Evaluate this claim....
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