Q3/ A 1.0-mm-diameter wire is maintained at a temperature of 400 C and exposed to a convection environment at 40 C with h-120 W/m2.C. Calculate the thermal conductivity that will just cause an insulation thickness of 0.2 mm to produce a "critical radius " How much of this insulation must be added to reduce the heat transfer by 75 percent from that which would be experienced by the bare wire?

Q3/ A 1.0-mm-diameter wire is maintained at a temperature of 400 C and exposed to a convection environment at 40 C with h-120 W/m2.C. Calculate the thermal conductivity that will just cause an insulation thickness of 0.2 mm to produce a "critical radius " How much of this insulation must be added to reduce the heat transfer by 75 percent from that which would be experienced by the bare wire?

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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