(B) Stainless steel tube is used to transport pharmaceutical liquids, it has an inner diameter of 40 mm and a wall thickness of 4 mm. The pharmaceutical and ambient air are at temperatures of 6 C and 23C, 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 length? (b) What is the heat gain per unit length if a 10 mm thickness layer of calcium silicate insulation (Kins = 0.050 W/m. K) is applied to the tube?

(B) Stainless steel tube is used to transport pharmaceutical liquids, it has an inner diameter of 40 mm and a wall thickness of 4 mm. The pharmaceutical and ambient air are at temperatures of 6 C and 23C, 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 length? (b) What is the heat gain per unit length if a 10 mm thickness layer of calcium silicate insulation (Kins = 0.050 W/m. K) is applied to the tube?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.42P

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Stainless steel tube is used to transport pharmaceutical liquids, it has an inner diameter of 40 mm and a wall thickness of 4 mm. The pharmaceutical and ambient air are at temperatures of 6 C and 23C, 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 length?(b) What is the heat gain per unit length if a 10 mm thickness layer of calcium silicate insulation (kins = 0.050 W/m. K) is applied to the tube?
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