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A copper hot water pipe (outer diameter ½”) has an exterior temperature of 49oC. For insulation,it...

A copper hot water pipe (outer diameter ½”) has an exterior temperature of 49oC. For insulation,it is wrapped in polyethylene foam that is ½” thick. If the pipe is 12 feet long and runs through a utility room whose temperature is 7oC

Find a) the rate at which heat is lost through the insulation. Polyethylene foam has a thermal conductivity of 0.024W/(m·K) (Hint: use the outer surface area of the insulation)

b)the heat lost (in kWh) through the insulation in 30.0 days

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