A boiler furnace wall must have a heat loss no greater than 700 Btu/hr~ft2 and is made of a material with a thermal conductivity of 0.60 Btu/hr~ft~F. The inner wall surface temperature is '2000°F, and the outer surface temperature is 800°F. What wall thick~ ness is required?

A boiler furnace wall must have a heat loss no greater than 700 Btu/hr~ft2 and is made of a material with a thermal conductivity of 0.60 Btu/hr~ft~F. The inner wall surface temperature is '2000°F, and the outer surface temperature is 800°F. What wall thick~ ness is required?

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.47P

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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 boiler furnace wall must have a heat loss no greater than 700 Btu/hr~ft2 and is made
of a material with a thermal conductivity of 0.60 Btu/hr~ft~F. The inner wall surface
temperature is '2000°F, and the outer surface temperature is 800°F. What wall thick~
ness is required?

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