1. Composite Brick Wall A 3.0 in thick brick wall has an outside surface temperature of 15 o F at a certain time in severe winter weather. The inside 0.5 in thick wallboard, which is separated from the brick wall by a 6-in air gap, has an inside surface temperature of 78 o F. Determine (a) the R-value Rv of the wall and (b) the heat rate q'' in [Btu/h·ft 2 ] through this wall. Assume that the air between the brick and wallboard surfaces does not circulate.

1. Composite Brick Wall A 3.0 in thick brick wall has an outside surface temperature of 15 o F at a certain time in severe winter weather. The inside 0.5 in thick wallboard, which is separated from the brick wall by a 6-in air gap, has an inside surface temperature of 78 o F. Determine (a) the R-value Rv of the wall and (b) the heat rate q'' in [Btu/h·ft 2 ] through this wall. Assume that the air between the brick and wallboard surfaces does not circulate.

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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