The heat pump is presently providing heating at a rate of 12 kW to maintain the interior of a building at 20°C. Outvide temperature is 5°C. The refrigerant enters the compressor at 2.4 bar and increases the pressure to 8.0 bar. Efficiency of the compressor is 80%. a. Temperatures at the principal states of the cycle, each °C b. Power input to the compressor, in kW c. Coefficient of performance

Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter44: Geothermal Heat Pumps
Section: Chapter Questions
Problem 13RQ: If 14 gpm of water is flowing through an open-loop heat pump with a temperature difference of 7F,...
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A heat pump operates with Refrigerant 134a as the working fluid. You are required to
analyze its performance, and compare it with Camot heat pump. The data of the heat
pump is as under:
23 - Thermodynamies-II
Page 1 of 3
The heat pump is presently providing heating at a rate of 12 kW to maintain the interior
of a building at 20°C. Outside temperature is 5°C. The refrigerant enters the compressor
at 2.4 bar and increases the pressure to 8.0 bar. Efficiency of the compressor is 80%.
a Temperatures at the principal states of the cycle, each °C
b. Power input to the compressor, in kW
c. Coefficient of performance
Relate its performance with the specifications provided by the vendor i.e. COP = 8.5 and
identify the possible reasons of differences. Draw Ts diagram
Transcribed Image Text:A heat pump operates with Refrigerant 134a as the working fluid. You are required to analyze its performance, and compare it with Camot heat pump. The data of the heat pump is as under: 23 - Thermodynamies-II Page 1 of 3 The heat pump is presently providing heating at a rate of 12 kW to maintain the interior of a building at 20°C. Outside temperature is 5°C. The refrigerant enters the compressor at 2.4 bar and increases the pressure to 8.0 bar. Efficiency of the compressor is 80%. a Temperatures at the principal states of the cycle, each °C b. Power input to the compressor, in kW c. Coefficient of performance Relate its performance with the specifications provided by the vendor i.e. COP = 8.5 and identify the possible reasons of differences. Draw Ts diagram
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