A steel tube having k =46W/m•C has an inside diameter of 3.0 cm and a tube wall thickness of 2 mm is covered with a 3-cm layer of asbestos insulation [k =0.2 W/m•C]. A fluid flows maintains inside tube surface temperature 223 C while the outside surface insulation temperature is 57 C. Calculate the heat lost by the tube per meter of length and what in the tube-insulator interface temperature?

A steel tube having k =46W/m•C has an inside diameter of 3.0 cm and a tube wall thickness of 2 mm is covered with a 3-cm layer of asbestos insulation [k =0.2 W/m•C]. A fluid flows maintains inside tube surface temperature 223 C while the outside surface insulation temperature is 57 C. Calculate the heat lost by the tube per meter of length and what in the tube-insulator interface temperature?

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.48P

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Question

A steel tube having k =46W/m•C has an inside diameter of 3.0 cm and a tube wall thickness of 2 mm
is covered with a 3-cm layer of asbestos insulation [k =0.2 WN/m•C]. A fluid flows maintains inside tube
surface temperature 223•C while the outside surface insulation temperature is 57 C. Calculate the
heat lost by the tube per meter of length and what in the tube-insulator interface temperature?

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