Question-AnswerCategory: Food Engineeringa-steel-pipe-outside-diameter-100-mm-is-covered-with-two-layers-of-insulation-the-inside-layer-40mm-thick-has-a-thermal-conductivity-of-0-07-w-m-k-the-outside-layer-20mm-thick-has-a-therma
Sumit asked 1 year ago

A steel pipe (outside diameter 100 mm) is covered with two layers of insulation. The inside layer, 40mm thick, has a thermal conductivity of 0.07 W/(m K). The outside layer,20mm thick, has a thermal conductivity of 0.15 W/(m K). The pipe is used to convey steam at a pressure of 700 kPa. The outside temperature of insulation is 24°C. If the pipe is 10 m long, determine the following, assuming the resistance to conductive heat transfer in steel pipe and convective resistance on the steam side are negligible: a. The heat loss per hour. b. The interface temperature of insulation.

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