A cold room has one of the walls 5m x 2.5m made of bricks 12cm thick insulated externally by cork slabbing 8cm thick. Cork is protected externally by 2.5 cm wood. Estimate the heat infiltration through the wall in 24 hours, if the interior of the cold room is maintained at a temperature of 0°C and the outside temperature is 20°C. Thermal conductivities for brick, cork and wood are 0.8, 0.038 and 0.15 kcal/m·hr·°C, respectively. What will be the interface temperatures?

A cold room has one of the walls 5m x 2.5m made of bricks 12cm thick insulated externally by cork slabbing 8cm thick. Cork is protected externally by 2.5 cm wood. Estimate the heat infiltration through the wall in 24 hours, if the interior of the cold room is maintained at a temperature of 0°C and the outside temperature is 20°C. Thermal conductivities for brick, cork and wood are 0.8, 0.038 and 0.15 kcal/m·hr·°C, respectively. What will be the interface temperatures?

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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.10P: 1.10 A heat flux meter at the outer (cold) wall of a concrete building indicates that the heat loss...

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