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Cold water at 10 degree C enters a water heater at the rate of 0.02 m^3...

Cold water at 10 degree C enters a water heater at the rate of 0.02 m^3 /min and leaves the water heater at 50 degrees C. The water heater receives heat from a heat pump which in turn receives heat from a source at 0 degree C.

a. Mass flow rate of water in kg/s

b. Rate at which h eat is supplied to the water in kJ/s.

c. Assuming the water heater acts as a heat sink having an average temperature of 30 degree C, determine the minimum power supplied to the heat pump, in kW.

d. What is the power input into the compressor, if it has a 20% loss by friction?

e. The second- Law efficiency of the heat pump

Engineering   Mechanical-Engineering   
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