A 15 cm outer diameter steam pipe is covered with 5 cm high temperature insulation (k = 0.85 W/m ⁰C) and 4 cm of low temperature (k = 0.72 W/m ⁰C). The steam is at 500 ⁰C and ambient air is at 40 ⁰C. Neglecting thermal resistance of steam and air sides and metal wall. Calculate: The heat loss from 1.0 m length of the pipe. The temperature drops across the insulation.

A 15 cm outer diameter steam pipe is covered with 5 cm high temperature insulation (k = 0.85 W/m ⁰C) and 4 cm of low temperature (k = 0.72 W/m ⁰C). The steam is at 500 ⁰C and ambient air is at 40 ⁰C. Neglecting thermal resistance of steam and air sides and metal wall. Calculate: The heat loss from 1.0 m length of the pipe. The temperature drops across the insulation.

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.

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The heat loss from 1.0 m length of the pipe.
The temperature drops across the insulation.

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