A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the sketch. On a cold day, the temperature and the convection heat trans- fer coefficients are Tei=20°C, h;=30 W/m²K and Teo=-15°C, h, =60 W/m²K. The wall surface area is 350 m². Determine the total heat loss through the wall. Conductivities are given as k,=0.038 W/m.K, k=0.012 W/m.K, k,=0.17 W/m.K.

A house has a composite wall of wood, fiberglass insulation, and plaster board, as indicated in the sketch. On a cold day, the temperature and the convection heat trans- fer coefficients are Tei=20°C, h;=30 W/m²K and Teo=-15°C, h, =60 W/m²K. The wall surface area is 350 m². Determine the total heat loss through the wall. Conductivities are given as k,=0.038 W/m.K, k=0.012 W/m.K, k,=0.17 W/m.K.

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.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.32P

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