To determine Whether the power input of 3 hp is sufficient for the compressor. The coefficient of performance of air conditioner. Explanation Write the expression for conversion of inside temperature from ° F to ° R . T C = ( T C ° F + 460 ) ° R (I) Here, the inside temperature in ° F is T C ° F . Write the expression for conversion of outside temperature from ° F to ° R . T H = ( T H ° F + 460 ) ° R (II) Here, the outside temperature in ° F is T C ° F . Write the expression for coefficient of reversible refrigeration cycle in terms of temperature. β max = T C T H − T C (III) Write the expression for coefficient of performance of refrigeration cycle in terms of heat and work. β = Q ˙ C W ˙ C (IV) Write the expression for coefficient of performance. β 1 = Q ˙ C W ˙ cycle (V) Conclusion: Substitute 70 ° F for T C ° F in Equation (I). T C = ( 70 ° F + 460 ) ° R = 530 ° R Substitute 90 ° F for T H ° F in Equation (II)

Fundamentals of Engineering Thermodynamics

8th Edition

ISBN: 9781118412930

Author: Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey

Publisher: WILEY

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Chapter 5.11, Problem 64P

To determine

Whether the power input of 3 hp is sufficient for the compressor.

The coefficient of performance of air conditioner.

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Chapter 5.11, Problem 63P

Chapter 5.11, Problem 65P

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Chapter 5 Solutions

Fundamentals of Engineering Thermodynamics

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