A heat engine operates between two reservoirs at 400°C and 30°C. Half the power produced by the heat engine is used to drive a Carnot heat pump that removes heat from the cold surroundings at 2°C and transfers it to a house maintained at 27°C. The heat engine is absorbing heat at a rate of 5 kJ/s. i) Draw the complete schematic of the device ii) Determine the thermal efficiency of the heat engine iii) Determine the coefficient of performance of the heat pump iv) Determine the rate of heat loss from the house.
A heat engine operates between two reservoirs at 400°C and 30°C. Half the power produced by the heat engine is used to drive a Carnot heat pump that removes heat from the cold surroundings at 2°C and transfers it to a house maintained at 27°C. The heat engine is absorbing heat at a rate of 5 kJ/s. i) Draw the complete schematic of the device ii) Determine the thermal efficiency of the heat engine iii) Determine the coefficient of performance of the heat pump iv) Determine the rate of heat loss from the house.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:iii) the exit area of the nozzle.
Take Cp = 1.005 kJ/kg-K and R=287 J/kg-K
Q.B3.
A heat engine operates between two reservoirs at 400°C and 30°C. Half the power produced
by the heat engine is used to drive a Carnot heat pump that removes heat from the cold
surroundings at 2°C and transfers it to a house maintained at 27°C. The heat engine is
absorbing heat at a rate of 5 kJ/s.
i) Draw the complete schematic of the device
ii) Determine the thermal efficiency of the heat engine
iii) Determine the coefficient of performance of the heat pump
iv) Determine the rate of heat loss from the house.
v) Determine the minimum rate of heat extraction by the heat pump, and
vi) the total rate of heat rejection.
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