charati7990 charati7990

02-01-2023
Engineering

Answered

A composite plane wall consists of a 5-in. -thick layer of insulation (ks = 0. 029 Btu/hft°R) and a 0. 75-in. -thick layer of siding (ks = 0. 058 Btu/hft°R). The inner temperature of the insulation is 67°F. The outer temperature of the siding is -8°F.

Determine at steady state:

(a) the temperature at the interface of the two layers, in °F, and (b) the rate of heat transfer through the wall in Btu/h*ft^2 of surface area

Answer :

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