2. A composite furnace wall is made up of a 14 in. lining of magnetite refractory brick, a 5.3 in. thickness of 85% magnesia, and a steel casing 1.10 in. thick. Flue gas temperature is 2200°F and the boiler room is at 81°F. Gas side film coefficient is 15 Btu/hr-ft2-"F and air side is 4. Determine the thermal current Q/A.
2. A composite furnace wall is made up of a 14 in. lining of magnetite refractory brick, a 5.3 in. thickness of 85% magnesia, and a steel casing 1.10 in. thick. Flue gas temperature is 2200°F and the boiler room is at 81°F. Gas side film coefficient is 15 Btu/hr-ft2-"F and air side is 4. Determine the thermal current Q/A.
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.
Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.41P
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