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Question no. 58059

Vapor compression refrigeration systems operate analogously to____________________?

Select your answer for: Vapor compression refrigeration systems operate analogously to____________________?
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Answer: E. none of the above

Explanation

Vapor compression systems operate on the vapor compression cycle, which is a reversed Rankine cycle. Reversed Carnot cycle is an ideal theoretical limit rather than a practical system. Standard vapor compression uses expansion valves instead of isentropic expansion turbines. Rankine cycle principles govern vapor power systems using liquid and vapor phase changes. Reversing the Rankine cycle creates the theoretical basis for vapor compression refrigeration. Throttling valves replace expansion engines in practical refrigeration to reduce costs.

Mechanical engineering textbooks compare vapor compression cycles to reversed Rankine cycles. Refrigeration system designers account for throttling irreversibilities not found in Carnot cycles. Understanding cycle differences helps engineers improve practical compressor and coil designs. Carnot cycle uses isothermal heat transfer and isentropic expansion processes. Rankine cycle is a power generation cycle rather than a refrigeration cooling cycle. Reversed Carnot cycle represents an ideal benchmark unattainable by real equipment.

Subject
Engineering
Topic
—
Difficulty
medium

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Select your answer for: Standard vapor compression refrigerators operate according to which thermodynamic cycle_________________?
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Answer: E. Reversed Carnot

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Select your answer for: The saturation vapor pressure characteristics of a suitable refrigerant should be_________________?
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Select your answer for: Relative coefficient of performance is defined as the ratio of_____________________?
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Select your answer for: Household domestic refrigerators typically employ which type of compressor____________________?
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Select your answer for: Incorporating under-cooling (sub-cooling) into a refrigeration cycle leads to_________________?
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Select your answer for: Vertical lines plotted on a pressure-enthalpy property chart represent constant values of_______________?
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