a) Explanation Given: Pressure ratio ( r P ) is 10 . Temperature of air at the compressor inlet ( T 1 ) is 520 R . Temperature of air at the turbine inlet ( T 3 ) is 2000 R . Calculation: Draw the T − s diagram of the cycle as in Figure (1). Refer table A-21, “Ideal gas properties of the air”, obtain the enthalpy and relative pressure of air at the temperature of 520 R . h 1 = 124 .27 Btu / lbm P r 1 = 1.2147 Calculate the relative pressure at state 2 ( P r 2 ) b) To determine The back work ratio. c) To determine The thermal efficiency of the cycle.

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ISBN: 9781260277722

Author: CENGEL

Publisher: MCG

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Chapter 9, Problem 65P

To determine

The air temperature at the compressor exit.

To determine

The back work ratio.

To determine

The thermal efficiency of the cycle.

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Chapter 9, Problem 64P

Chapter 9, Problem 66P

Chapter 9 Solutions

FUND. OF THERMAL-FLUID SCI (LL) W/ CONN

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