An incinerator with 1 / 2 -in. steel walls is lined with 4 in. of firebrick to
Question:
An incinerator with 1/2-in. steel walls is lined with 4 in. of firebrick to protect the steel and has 3 in. of magnesia insulation on the outside. When the gas temperature is 1,400°F, the inside wall of the firebrick is at 1,200°F as measured by an optical pyrometer.
(a) What is the temperature of the steel wall?
(b) How much more insulation would be needed to raise the inside wall temperature to 1,300°F?
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Step by Step Answer:
To solve this problem we can use the following equation for heat conduction through a composite wall Q kAT x where Q is the heat transfer rate in W k ...View the full answer
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Related Book For 
Unit Operations Of Chemical Engineering
ISBN: 9780072848236
7th Edition
Authors: Warren McCabe, Julian Smith, Peter Harriott
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