A horizontal steel pipe having a diameter of 5 cm is maintained at a temperature of 50•C in a large room where the air and wall temperature are at 20-C. The surface emissivity of the steel may be taken as ɛ:=0.8. Use h = 6.5 W/m2 - "C for this situation, calculate the total heat lost by the pipe per unit length. (Hint energy loss qtotal=qconv+qrad)

A horizontal steel pipe having a diameter of 5 cm is maintained at a temperature of 50•C in a large room where the air and wall temperature are at 20-C. The surface emissivity of the steel may be taken as ɛ:=0.8. Use h = 6.5 W/m2 - "C for this situation, calculate the total heat lost by the pipe per unit length. (Hint energy loss qtotal=qconv+qrad)

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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Question

A horizontal steel pipe having a diameter of 5 cm is maintained at a temperature of 50•C in a
large room where the air and wall temperature are at 20-C. The surface emissivity of the steel
may be taken as ɛ=0.8. Use h = 6.5 W/m2 - "C for this situation, calculate the total heat lost by
the pipe per unit length. (Hint energy loss qtotal=qconv+qrac)

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