Consider a 25-m-long thick-walled concrete duct (k = 0.75 W/m K) of square cross section. The
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Consider a 25-m-long thick-walled concrete duct (k = 0.75 W/m · K) of square cross section. The outer dimensions of the duct are 20 cm × 20 cm, and the thickness of the duct wall is 2 cm. If the inner and outer surfaces of the duct are at 100°C and 30°C, respectively, determine the rate of heat transfer through the walls of the duct.
Transcribed Image Text:
30°C 100°C 16 cm -20 cm- || II 25 m 1 I 1 I I
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Related Book For
Heat And Mass Transfer Fundamentals And Applications
ISBN: 9780073398181
5th Edition
Authors: Yunus Cengel, Afshin Ghajar
Question Posted:
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