A heat pump uses R134a as refrigerant. The refrigerant flows into the condenser at 900 kPa and 60°C and flows out of it (the condenser) as saturated liquid at the same pressure. The pressure in the evaporator is 70 kPa. The mass flow of the refrigerant is 0.025 kg/s and the compressor power is 1.4 kW a) Calculate the heat pump's power factor, COPHP. b) Calculate how much heat is absorbed/taken up from the air outside. c) Calculate the vapor quality of the refrigerant into the evaporator.
A heat pump uses R134a as refrigerant. The refrigerant flows into the condenser at 900 kPa and 60°C and flows out of it (the condenser) as saturated liquid at the same pressure. The pressure in the evaporator is 70 kPa. The mass flow of the refrigerant is 0.025 kg/s and the compressor power is 1.4 kW a) Calculate the heat pump's power factor, COPHP. b) Calculate how much heat is absorbed/taken up from the air outside. c) Calculate the vapor quality of the refrigerant into the evaporator.
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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Question
A heat pump uses R134a as refrigerant.
The refrigerant flows into the condenser at 900 kPa and 60°C and flows out of it (the condenser)
as saturated liquid at the same pressure. The pressure in the evaporator is 70 kPa. The mass flow of the refrigerant is 0.025 kg/s and the compressor power is 1.4 kW
a) Calculate the heat pump's power factor, COPHP.
b) Calculate how much heat is absorbed/taken up from the air outside.
c) Calculate the vapor quality of the refrigerant into the evaporator.
Transcribed Image Text:D
expansion valve
3
4
QH
capacitor
evaporator
QL
2
compressor
1
Winn
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