7th Edition

ISBN: 9780470501979

Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine

Publisher: Wiley, John & Sons, Incorporated

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When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a bur…

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Textbook Question

Chapter 8, Problem 8.50P

The air passage for cooling a gas turbine vane can be approximated as a lube of 3-mm diameter and 75-mm length. The operating temperature of the vane is 65 0 ° C , and air enters the tube at 427 ° C .

(a) For an airflow rate of 0. 18 kg / h . calculate the air outlet temperature and the heat removed from the vane.

(b) Generate a plot of the air outlet temperature as a function of flow rate for 0.1 ≤ m ≤ 0.6 kg/h. Compare this result with those for vanes having 2- and 4-mm —diameter tubes, with all other conditions remaining the same.

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Chapter 8, Problem 8.49P

Chapter 8, Problem 8.51P

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Solution Summary: The author explains the air outlet temperature and the heat removed from the vane. The air inlet temperature is T_m,i=427°C.

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