5. For a vapour compression refrigeration system using R-22 as refrigerant, condenser outlet temperature is 40°C and the evaporator inlet temperature is -20°C. In order to avoid flashing of the refrigerant, a liquid-suction vapour heat exchanger is provided where liquid is subcooled to 26°C. The refrigerant leaves the evaporator as saturated vapour. The compression process is isentropic. Find the power requirement and coefficient of

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
Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems
Section: Chapter Questions
Problem 9RQ: The approach temperature for the evaporator is A. the difference between the suction and head...
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Note:Use-the relevant-chart-for-each-preblem------
5. For a vapour compression refrigeration system using R-22 as refrigerant, condenser
outlet temperature is 40°C and the evaporator inlet temperature is -20'C. In order to avoid
flashing of the refrigerant, a liquid-suction vapour heat exchanger is provided where liquid
is subcooled to 26°C. The refrigerant leaves the evaporator as saturated vapour. The
compression process is isentropic. Find the power requirement and coefficient of
1
performance if capacity of the system is 10 kW at -20 °C. Show the cycle on temperature-
entropy and pressure-enthalpy diagrams. The specific heat of vapour refrigerant is 1.03
kJ/kg K. (Same as Example 14)
Please solve the question on a piece of paper and using tables with illustrations
Transcribed Image Text:Note:Use-the relevant-chart-for-each-preblem------ 5. For a vapour compression refrigeration system using R-22 as refrigerant, condenser outlet temperature is 40°C and the evaporator inlet temperature is -20'C. In order to avoid flashing of the refrigerant, a liquid-suction vapour heat exchanger is provided where liquid is subcooled to 26°C. The refrigerant leaves the evaporator as saturated vapour. The compression process is isentropic. Find the power requirement and coefficient of 1 performance if capacity of the system is 10 kW at -20 °C. Show the cycle on temperature- entropy and pressure-enthalpy diagrams. The specific heat of vapour refrigerant is 1.03 kJ/kg K. (Same as Example 14) Please solve the question on a piece of paper and using tables with illustrations
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