Question: fluid flows at 23C inside a thick-walled tube (k = 19 W/m.C) with an inner diameter of 36 mm and a wall thickness of 2

fluid flows at 23C inside a thick-walled tube (k = 19 W/m."C) with an inner diameter of 36 mm and a wall thickness of 2 me and covered with a 10 far thick layer of calcium silicate insulation (k= 0.05 W/m.C). The inside coonection coefficient is 400 W/m "C. The outside is exposed to air at 6C with a convection coefficient of 6 W/m *C. Calculate the overall heat transfer coefficient based on inside area and the heat loss to surrounding air for 1.0 m length.

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