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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.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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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.
Transcribed Image Text: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.
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