0.5m and is insulated glass of 100mm thick. What is the heat loss per unit lengt

Question

0.5m and is insulated glass of 100mm thick. What is the heat loss per unit length of pipe when heated oil at 120 degreeC, flows through the pipe and the surface of the earth is at atemperature of 0 degreeC. A long power transmission cable buried at a depth (ground-to-cable-centerline distance) of 2m. cable is encased in a thin walled pipe of 0.1m diameter and to render the cable superconducting (with aero power discipation), the space between the cable and pipe is filled with liquid nitrogen at 77K, If the pipe is covered with a superinsulator ( 0.005W/m-k) of 0.05m thickness and the surface of the earth ( =1.2W/m-k) in at 300K. What is the cooling load (W/m) that must be maintained by a refrigerator per unit pipe length? A small device is used to measure the surface

Explanation / Answer

please contact chegg.. the images are not uploaded propely. it is an extremely blured image.

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