A thick-walled tube of stainless steel [18% Cr, 8% Ni, k= 19 W/m - °C] with 2-cm inner diam- eter (ID) and 4-cm outer diameter (OD) is covered with a 3-cm layer of asbestos insulation [k =0.2 W/m - °C]. If the inside wall temperature of the pipe is maintained at 600°C, calculate the heat loss per meter of length. Also calculate the tube-insulation interface temperature.

A thick-walled tube of stainless steel [18% Cr, 8% Ni, k= 19 W/m - °C] with 2-cm inner diam- eter (ID) and 4-cm outer diameter (OD) is covered with a 3-cm layer of asbestos insulation [k =0.2 W/m - °C]. If the inside wall temperature of the pipe is maintained at 600°C, calculate the heat loss per meter of length. Also calculate the tube-insulation 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.

Chapter4: Numerical Analysis Of Heat Conduction

Section: Chapter Questions

Problem 4.12P

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A thick-walled tube of stainless steel [18% Cr, 8% Ni, k=19 W/m - °C] with 2-cm inner diam-
eter (ID) and 4-cm outer diameter (OD) is covered with a 3-cm layer of asbestos insulation
[k =0.2 W/m - °C). If the inside wall temperature of the pipe is maintained at 600°C, calculate
the heat loss per meter of length. Also calculate the tube-insulation interface temperature.

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