A furnace wall comprises three layers of thickness 250 mm, 100 mm, and 150 mm with thermal conductivities of 1.65, k and 9.2 W/m K respectively. The inside is exposed to gases at 1250 C with convection of 25 W/m K, and the inside surface is at 1100 C. the outside surface air at 25 °C with convection of 12 W/m2K.Determine the unknown thermal conductivity k,nW/m K to 3 d.p.

A furnace wall comprises three layers of thickness 250 mm, 100 mm, and 150 mm with thermal conductivities of 1.65, k and 9.2 W/m K respectively. The inside is exposed to gases at 1250 C with convection of 25 W/m K, and the inside surface is at 1100 C. the outside surface air at 25 °C with convection of 12 W/m2K.Determine the unknown thermal conductivity k,nW/m K to 3 d.p.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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