Explanation Write the formula to calculate the thermodynamic relation for isentropic condition. T 02 T 01 = ( P 02 P 01 ) ( k − 1 ) / k (I) Here, temperature at the inlet is T 01 , temperature at the outlet is T 02 , pressure at the inlet is P 01 , pressure at the outlet is P 02 , and the ratio of specific heats is k . Write the formula to calculate the ratio of specific heats. k = c p c v (II) Here, specific heat at constant pressure is c p and specific heat at constant volume is c v . Write the formula to calculate the gas constant R as a function of specific heats. R = c p − c v (III) Here, gas constant is R . Write the energy balance for the turbine. w out = ( h 01 − h 02 ) (IV) Here, enthalpy at the outlet is h 02 , enthalpy at the inlet is h 01 , and power output of the turbine is w out . Conclusion: Assume that the stagnation process of the system is in isentropic expansion. Substitute 963.2 K for T 01 , 0 .1 MPa for P 02 , 0 .75 MPa for P 01 , and 1.33 for k in Equation (I). T 02 963.2 = ( 0.1 0.75 ) ( 1

8th Edition

ISBN: 9780073398174

Author: Yunus A. Cengel Dr., Michael A. Boles

Publisher: McGraw-Hill Education

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Chapter 17.7, Problem 10P

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The power output of the turbine.

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Chapter 17 Solutions

Thermodynamics: An Engineering Approach

Ch. 17.7 - A high-speed aircraft is cruising in still air....Ch. 17.7 - What is dynamic temperature?Ch. 17.7 - Prob. 3P Ch. 17.7 - Prob. 4P Ch. 17.7 - Prob. 5P Ch. 17.7 - Calculate the stagnation temperature and pressure...Ch. 17.7 - Prob. 7P Ch. 17.7 - Prob. 8P Ch. 17.7 - Prob. 9P Ch. 17.7 - Prob. 10P

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