A 5-m-wide 3-m-high wall is constructed of one layer of common brick (k= 0.72 W/mK) of thickness 20 cm. The inner surface of the wall is maintained at 25°C while the outer surface is exposed to outdoors at 10°C with a combined convection and radiation heat transfer coefficient of 17 W/m2K. An insulation is to be added to the outside part of the wall to decrease the heat loss by 85%. Determine the thickness of insulation and the outer surface temperature if the wall is insulated with polyurethane foam (k= 0.025 W/mK)

A 5-m-wide 3-m-high wall is constructed of one layer of common brick (k= 0.72 W/mK) of thickness 20 cm. The inner surface of the wall is maintained at 25°C while the outer surface is exposed to outdoors at 10°C with a combined convection and radiation heat transfer coefficient of 17 W/m2K. An insulation is to be added to the outside part of the wall to decrease the heat loss by 85%. Determine the thickness of insulation and the outer surface temperature if the wall is insulated with polyurethane foam (k= 0.025 W/mK)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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