Common practice in chemical processing plants is toclad

Fundamentals of Heat and Mass Transfer | 0th Edition | ISBN: 9780470501979 | Authors: 7

Problem 9.65 Chapter 9

Fundamentals of Heat and Mass Transfer | 0th Edition

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Fundamentals of Heat and Mass Transfer | 0th Edition | ISBN: 9780470501979 | Authors: 7

Fundamentals of Heat and Mass Transfer | 0th Edition

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Problem 9.65

Common practice in chemical processing plants is toclad pipe insulation with a durable, thick aluminumfoil. The functions of the foil are to confine the battinsulation and to reduce heat transfer by radiation tothe surroundings. Because of the presence of chlorine(at chlorine or seaside plants), the aluminum foil sur-face, which is initially bright, becomes etched within-service time. Typically, the emissivity mightchange from 0.12 at installation to 0.36 with extendedservice. For a 300-mm-diameter foil-covered pipewhose surface temperature is 90?C, will this increasein emissivity due to degradation of the foil finishhave a significant effect on heat loss from the pipe?Consider two cases with surroundings and ambientair at 25?C: (a) quiescent air and (b) a cross-windvelocity of 10 m/s.

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Chapter 9, Problem 9.65 is Solved
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Textbook: Fundamentals of Heat and Mass Transfer
Edition: Theodore L. Bergman
Author: 7
ISBN: 9780470501979

This textbook survival guide was created for the textbook: Fundamentals of Heat and Mass Transfer, edition: Theodore L. Bergman. The answer to “Common practice in chemical processing plants is toclad pipe insulation with a durable, thick aluminumfoil. The functions of the foil are to confine the battinsulation and to reduce heat transfer by radiation tothe surroundings. Because of the presence of chlorine(at chlorine or seaside plants), the aluminum foil sur-face, which is initially bright, becomes etched within-service time. Typically, the emissivity mightchange from 0.12 at installation to 0.36 with extendedservice. For a 300-mm-diameter foil-covered pipewhose surface temperature is 90?C, will this increasein emissivity due to degradation of the foil finishhave a significant effect on heat loss from the pipe?Consider two cases with surroundings and ambientair at 25?C: (a) quiescent air and (b) a cross-windvelocity of 10 m/s.” is broken down into a number of easy to follow steps, and 115 words. Since the solution to 9.65 from 9 chapter was answered, more than 224 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 9.65 from chapter: 9 was answered by , our top Engineering and Tech solution expert on 09/04/17, 10:17PM. This full solution covers the following key subjects: foil, heat, plants, pipe, surroundings. This expansive textbook survival guide covers 14 chapters, and 1569 solutions. Fundamentals of Heat and Mass Transfer was written by and is associated to the ISBN: 9780470501979.

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