The temperatures on the inner and outer sides of a furnace wall are 650°C and 250° C respectively. It is exposed to ambient air at 50°C. To reduce the heat loss from the furnace, its wall thickness is increased to double. Determine the %age decrease in heat loss due to change in wall thickness assuming no change in surface and ambient temperatures.
The temperatures on the inner and outer sides of a furnace wall are 650°C and 250° C respectively. It is exposed to ambient air at 50°C. To reduce the heat loss from the furnace, its wall thickness is increased to double. Determine the %age decrease in heat loss due to change in wall thickness assuming no change in surface and ambient temperatures.
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.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.1P: 1.1 On a cold winter day, the outer surface of a 0.2-m-thick concrete wall of a warehouse is exposed...
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8. The temperatures on the inner and outer sides of a furnace wall are 650°C and 250° C
respectively. It is exposed to ambient air at 50°C. To reduce the heat loss from the
furnace, its wall thickness is increased to double. Determine the %age decrease in heat
loss due to change in wall thickness assuming no change in surface and ambient
temperatures.
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