a) Explanation Given: Compression ratio ( r ) is 18.2 . Initial temperature of the cycle ( T 1 ) is 120 ° F . Initial pressure temperature of the cycle ( P 1 ) is 14 .7 psia . Temperature at the end of the heat addition process ( T 3 ) is 3200 R . Calculation: Refer Table A-2E, “Ideal-gas specific heats of various common gases”, obtain the gas constant of the air. c v = 0.171 Btu / lbm c p = 0.240 Btu / lbm k = 1.4 Calculate the temperature at state 2 ( T 2 ) . T 2 = T 1 ( v 1 v 2 ) k − 1 = T 1 ( r ) k − 1 = ( 580 R ) ( 18 b) To determine The heat rejection per unit mass. c) To determine The thermal efficiency.

5th Edition

ISBN: 9780078027680

Author: Yunus A. Cengel Dr., Robert H. Turner, John M. Cimbala

Publisher: McGraw-Hill Education

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Question

Chapter 9, Problem 51P

To determine

The cu-off ratio.

To determine

The heat rejection per unit mass.

To determine

The thermal efficiency.

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Chapter 9, Problem 50P

Chapter 9, Problem 52P

Chapter 9 Solutions

Fundamentals of Thermal-Fluid Sciences

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