Find the rate of heat loss per foot of conduit

Reference no: EM131515001

Question: A cylindrical conduit carries a gas which keeps the inside surface of the conduit at 600OF. The conduit is insulated with 4 in. of rock wool, and the outer surface of this insulation is at a temperature of 1WF. The thermal conductivity of the conduit is 0.88 Btu/@ ft °F).

The thermal conductivity of the rock wool is given by the empirical curve fit equation

k = 0.025+0.05Tk = 0.025+0.05T

If the conduit is 1/4-in. thick with a 3-1/2 in. lD, find the rate of heat loss per foot of conduit.

Reference no: EM131515001

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