Suppose the insulating qualities of the wall of a house come mainly from a 4.0-in. layer of
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Suppose the insulating qualities of the wall of a house come mainly from a 4.0-in. layer of brick and an R-19 layer of insulation, as shown in Fig. 14-19.What is the total rate of heat loss through such a wall, if its total area is 195 ft2 and the temperature difference across it is 35 F°?
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Brick Insulation (R1) (R2) T1 T2 Нeat flow
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