A) A plane wall has internal heat generation and is cooled covectively at its two faces. Given : heat generation Trate g=1,000W / m wall thickness 2L= 100 mm air temp T = 20C temp within wall T(x) = 10(0.05? – x')+30 k = WIm.K A1) Find thermal conductivity of the wall h = WIm K A2) Find convection heat transfer coeff Solution

A) A plane wall has internal heat generation and is cooled covectively at its two faces. Given : heat generation Trate g=1,000W / m wall thickness 2L= 100 mm air temp T = 20C temp within wall T(x) = 10(0.05? – x')+30 k = WIm.K A1) Find thermal conductivity of the wall h = WIm K A2) Find convection heat transfer coeff Solution

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

A)
A plane wall has internal heat generation and is cooled covectively at
its two faces.
Given :
50
heat generation Tate g=1,000W / m?
wall thickness
2L= 100 mm
air temp
T 20C
temp within wall T(x)=10(0.052-x')+30
WIm.K
Find thermal conductivity of the wall
h%3D
k =
A1)
WIm.K
A2)
Find convection heat transfer coeff
Solution

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A) A plane wall has internal heat generation and is cooled covectively at its two faces. Given : heat generation rate g=1,000W/m? | 50 wall thickness 2L= 100 mm air temp T = 20C temp within wall T(x) = 10(0.052 – x')+30 WIm.K Find thermal conductivity of the wall h% D k = A1) Wim? K A2) Find convection heat transfer coeff Solution
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