Calculate the thickness of the magnesia insulation necessary to restrict the heat loss to 5 BTU/hr-ft2 through the walls of a furnace having inside and ambient temperatures of 1500 oF and 150 oF, respectively. The furnace wall is ¼ in, steel plate and 3 in refractory lining. Thermal conductivity in BTU/hr –ft-oF are kref = 0.6, ksteel = 26, kmag=0.03
Calculate the thickness of the magnesia insulation necessary to restrict the heat loss to 5 BTU/hr-ft2 through the walls of a furnace having inside and ambient temperatures of 1500 oF and 150 oF, respectively. The furnace wall is ¼ in, steel plate and 3 in refractory lining. Thermal conductivity in BTU/hr –ft-oF are kref = 0.6, ksteel = 26, kmag=0.03
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 1.11P: 1.11 Calculate the heat loss through a glass window 7-mm thick if the inner surface temperature is...
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Calculate the thickness of the magnesia insulation necessary to restrict the heat loss to 5 BTU/hr-ft2 through the walls of a furnace having inside and ambient temperatures of 1500 oF and 150 oF, respectively. The furnace wall is ¼ in, steel plate and 3 in refractory lining. Thermal conductivity in BTU/hr –ft-oF are kref = 0.6, ksteel = 26, kmag=0.03
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