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1. A farmer runs a heat pump using 2 kW of power input. It keeps a chicken hatchery at a constant 30?C while the room loses 10 kW to the colder outside ambient air at 10?C. Find the COP of the heat pump, the rate of entropy generated in the heat pump and its heat exchangers, and the rate of entropy generated in the heat loss process.

2. An insulted cylinder/piston has an initial volume of 0.15 m3 and contains steam at 400 kPa, 200?C. The steam is expanded adiabatically, and the work output is measured very carefully to be 30 kJ. It is claimed that the final state of the water is in the two-phase (liquid and vapor) region. What is your evaluation of the claim?

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  • Category:- Civil Engineering
  • Reference No.:- M91989125

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