Q1: A house has a composite wall of wood, fiberglass insula- tion, and plaster board, as indicated in the sketch. On a cold winter day, the convection heat transfer coefficients are h, = 60 W/m.K and h, = 30 Wf/m²-K. The total wall surface area is 350 m'. Glass fiber blarket (28 kgm'), A Plaster board. -Piywood siding. A, (a) Determine a symbolic expression for the total thermal resistance of the wall, including inside and outside convection effects for the prescribed conditions. Inside Datside 4.T 20°c 11 111 (b) Determine the total heat loss through the wall. (c) If the wind were blowing violently, raising h, to 300 W/m K, determine the percentage increase in the heat loss. 10 mm 100 mm 20 mm
Q1: A house has a composite wall of wood, fiberglass insula- tion, and plaster board, as indicated in the sketch. On a cold winter day, the convection heat transfer coefficients are h, = 60 W/m.K and h, = 30 Wf/m²-K. The total wall surface area is 350 m'. Glass fiber blarket (28 kgm'), A Plaster board. -Piywood siding. A, (a) Determine a symbolic expression for the total thermal resistance of the wall, including inside and outside convection effects for the prescribed conditions. Inside Datside 4.T 20°c 11 111 (b) Determine the total heat loss through the wall. (c) If the wind were blowing violently, raising h, to 300 W/m K, determine the percentage increase in the heat loss. 10 mm 100 mm 20 mm
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 1.3P: 1.3 A furnace wall is to be constructed of brick having standard dimensions of Two kinds of...
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