A house's exterior wall consists of 15 cm layer of brick (k = 0.75 W/m-°C) followed by 4 cm layer of gypsumplaster (k = 0.5 W/m-°C). What thickness of rock wool insulation (k = 0.065 W/m-°C) should be added to reducethe heat loss or gain through the wall to 25%?

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Answered: A house's exterior wall consists of 15…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.54P

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