Please only answer question 4 Parts C and D
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
Chapter45: Domestic Refrigerators And Freezers
Section: Chapter Questions
Problem 9RQ: The defrost cycle in a domestic refrigerator may be terminated by two methods: ___and___.
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Please only answer question 4 Parts C and D

Transcribed Image Text:3: Consider the Rankine power cycle using vapor and liquid.
a: Draw the T-s property diagram of the Carnot Vapor Cycle and explain what kind
of problem the Carnot Vapor Cycle has in each process explicitly.
b: Draw a T-s diagram for the ideal Rankine cycle and label each process explicitly.
Write down the thermal efficiency in terms of enthalpy.
c: There is an ideal reheating Rankine cycle in order to improve the efficiency of the
ideal Rankine cycle. Explain the cycle and its necessity in terms of the property diagram
explicitly.
d: Name the gas power cycle which uses the same four processes in its cycle and
draw the T-s diagram and the P-v diagram for the gas power cycle.

Transcribed Image Text:4: Consider a vapor refrigeration cycle.
a: Draw the T-s diagram of the reversed Carnot Cycle and describe what kind of
problem each process of the cycle has explicitly. (We use the mixture of liquid and
vapor as its working fluid.)
b: Draw a T-s diagram in the ideal refrigeration cycle and label each process
explicitly.
c: There are the multipurpose refrigeration system and the multistage refrigeration
system of gases to improve the ideal refrigeration system. Describe their cycles in terms
of the property diagrams explicitly and discuss the reasons why they are necessary.
d: Discuss the current status of existing refrigerants and describe how to resolve their
problems explicitly.
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