A heat pump shown is driven by 3.0 MW motor and receives heat from a source at 60 C and deliver energy to a boiler that operates at constant pressure and saturation temperature of 140 C. The water enters the boiler as saturated liquid and leaves as saturated vapor at the same temperature. The heat pump operates with a COP (coefficient of performance) that is 60% of a Carnot heat pump COP. Find : 1- the maximum mass flow rate of water the system can deliver 2- the heat received from the source Q, boiler mter VHP W T 60°C

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Author:Kreith, Frank; Manglik, Raj M.
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Chapter10: Heat Exchangers
Section: Chapter Questions
Problem 10.49P
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A heat pump shown is driven by 3.0 MW motor and receives heat from a source at 60C and
deliver energy to a boiler that operates at constant pressure and saturation temperature of 140
C. The water enters the boiler as saturated liquid and leaves as saturated vapor at the same
temperature. The heat pump operates with a COP (coefficient of performance) that is 60% of a
Carnot heat pump COP.
Find : 1- the maximum mass flow rate of water the system can deliver
2- the heat received from the source Q,
boiler
mter
TH
VHP - w
T 60°C
Transcribed Image Text:A heat pump shown is driven by 3.0 MW motor and receives heat from a source at 60C and deliver energy to a boiler that operates at constant pressure and saturation temperature of 140 C. The water enters the boiler as saturated liquid and leaves as saturated vapor at the same temperature. The heat pump operates with a COP (coefficient of performance) that is 60% of a Carnot heat pump COP. Find : 1- the maximum mass flow rate of water the system can deliver 2- the heat received from the source Q, boiler mter TH VHP - w T 60°C
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