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A pipeline, used for the transport of crude oil, is buried in the earth (k =...

A pipeline, used for the transport of crude oil, is buried in the earth (k = 0.52 W/m-K) such that its centerline is a distance of 1.4 m below the surface. The pipe has an outer diameter of 0.5 m and is insulated with a layer of cellular glass 100 mm thick. What is the heat loss per unit length of pipe when heated oil at 130°C flows through the pipe and the surface of the earth is at a temperature of 0°C?

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