The evaporator pressure of the vapor compression heat pump using R-134a as a refrigerant, which you are considering to buy in your home, is 6.45 bar and the condenser pressure is 15.94 bar. The heating requirement of your house in winter is 90 MJ/h and the compressor in the system works with 75% efficiency. The unit price of electricity is 0.9 TL/kWh, and that of natural gas is 0.35 TL/kWh. The efficiency of your existing gas fired combi boiler is 80%. Accordingly, whether the heat pump or your existing combi boiler will heat your house more economically, specify the reason. Also draw the T-S diagram for the heat pump. Indicate the locations of the compressor, condenser and evaporator with the points on the diagram.

The evaporator pressure of the vapor compression heat pump using R-134a as a refrigerant, which you are considering to buy in your home, is 6.45 bar and the condenser pressure is 15.94 bar. The heating requirement of your house in winter is 90 MJ/h and the compressor in the system works with 75% efficiency. The unit price of electricity is 0.9 TL/kWh, and that of natural gas is 0.35 TL/kWh. The efficiency of your existing gas fired combi boiler is 80%. Accordingly, whether the heat pump or your existing combi boiler will heat your house more economically, specify the reason. Also draw the T-S diagram for the heat pump. Indicate the locations of the compressor, condenser and evaporator with the points on the diagram.

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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Thermodynamics
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