A wall is constructed of two layers of 1 cm thick plaster board (k = 0.17 W/m.K) placed 12 cm apart. The space between these two is filled with fibre glass insulation (k = 0.035 W/m.K). Determine (a) thermal resistance of the wall (b) R value of insulation (c) heat transfer rate for temperature difference of 150°C.

A wall is constructed of two layers of 1 cm thick plaster board (k = 0.17 W/m.K) placed 12 cm apart. The space between these two is filled with fibre glass insulation (k = 0.035 W/m.K). Determine (a) thermal resistance of the wall (b) R value of insulation (c) heat transfer rate for temperature difference of 150°C.

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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.8P

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