Answer to Question #223851 in Chemical Engineering for Lokika

Question #223851
A composite wall is formed of a 2.5 cm copper plate (k=385 W/m-K). a 3.2 cm layer of

asbestos (k=0.2 W/m-K), and a 5 cm layer of fibreglass (k=0.045 W/m-K). The wall is subjected to an overall temperature drop of 560
1
Expert's answer
2021-08-20T01:36:45-0400

thickness of copper plate = 2.5cm

kc = 385 W/m.K

thickness of absestos = 3.2cm

ka = 0.2 W/m.K

thickness of fireglass = 5cm

kf = 0.045 W/m.K

∆T = 560°

rate of heat loss (Q) =


RthC =



RthA =



RthF =



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