The circulation rate of the refrigerant isThe heat-transfer rate in the condenser isThe power requirement iskW.kg-s-1KJ-s-1 A vapor-compression refrigeration system operates on the cycle shown below. The refrigerant is tetrafluoroethane. For thefollowing set of operating conditions, determine the circulation rate of the refrigerant, the heat-transfer rate in the condenser,the power requirement, the coefficient of performance of the cycle, and the coefficient of performance of a Carnotrefrigeration cycle operating between the same temperature levels. Use the table containing the properties of saturated1,1,1,2-tetrafluoroethane (R134A) and the PH diagram for tetrafluoroethane (HFC-134a). (Include a minus sign if required.)TSVapor-compression refrigeration cycle.Evaporation T= -12°CCondensation T = 26°Cn(compressor) = 0.77Refrigeration rate = 400 kJ-s¯14ThrottlevalveCondenser3CompressorEvaporator2

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Answered: The circulation rate of the refrigerant…

The circulation rate of the refrigerant is The heat-transfer rate in the condenser is The power requirement is kW. kg-s-1 KJ-s¯1

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

Chapter3: Refrigeration And Refrigerants

Section: Chapter Questions

Problem 26RQ: Define net refrigeration effect as it applies to the refrigeration cycle.

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Question

The circulation rate of the refrigerant is
The heat-transfer rate in the condenser is
The power requirement is
kW.
kg-s-1
KJ-s-1

A vapor-compression refrigeration system operates on the cycle shown below. The refrigerant is tetrafluoroethane. For the
following set of operating conditions, determine the circulation rate of the refrigerant, the heat-transfer rate in the condenser,
the power requirement, the coefficient of performance of the cycle, and the coefficient of performance of a Carnot
refrigeration cycle operating between the same temperature levels. Use the table containing the properties of saturated
1,1,1,2-tetrafluoroethane (R134A) and the PH diagram for tetrafluoroethane (HFC-134a). (Include a minus sign if required.)
T
S
Vapor-compression refrigeration cycle.
Evaporation T= -12°C
Condensation T = 26°C
n(compressor) = 0.77
Refrigeration rate = 400 kJ-s¯1
4
Throttle
valve
Condenser
3
Compressor
Evaporator
2

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