A stainless steel (AISI 316) tube used to transport a chilled pharmaceutical has an inner diameter...

A stainless steel (AISI 316) tube used to transport a chilled pharmaceutical has an inner diameter of 30 mm and a wall thickness of 3 mm. The pharmaceutical and ambient air are at temperatures of 6oC and 23oC, respectively, while the corresponding inner and outer convection coefficients are 400 W/m2 K and 6 W/m2 K, respectively.
(a) What is the heat gain per unit tube length?
(b) What is the heat gain per unit length if a 10-mm thick layer of calcium silicate insulation (k = 0.050 W/m. K) is applied to the tube?

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samet mamat answered 8 months ago

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