Q1) Consider the base plate of a 800-W household iron having a thickness of L=0.6 cm, base area of A=160 cm2, and thermal conductivity of k=120 W/m-°C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When steady operating conditions are reached, the outer surface temperature of the plate is measured to be 85°C. Disregarding any heat loss through the upper part of the iron and taking the nodal spacing to be 0.2 cm, (a) obtain the finite difference formulation for the nodes and (b) determine the inner surface temperature of the plate by solving those equations. Insulation Resistance heater, 80 w 85°C Base plate

Q1) Consider the base plate of a 800-W household iron having a thickness of L=0.6 cm, base area of A=160 cm2, and thermal conductivity of k=120 W/m-°C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside. When steady operating conditions are reached, the outer surface temperature of the plate is measured to be 85°C. Disregarding any heat loss through the upper part of the iron and taking the nodal spacing to be 0.2 cm, (a) obtain the finite difference formulation for the nodes and (b) determine the inner surface temperature of the plate by solving those equations. Insulation Resistance heater, 80 w 85°C Base plate

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

Q1) Consider the base plate of a 800-W household iron having a thickness of
L=0.6 cm, base area of A=160 cm2, and thermal conductivity of k3120 W/m-°C.
The inner surface of the base plate is subjected to uniform heat flux generated
by the resistance heaters inside. When steady operating conditions are reached,
the outer surface temperature of the plate is measured to be 85°C. Disregarding
any heat loss through the upper part of the iron and taking the nodal spacing to
be 0.2 cm, (a) obtain the finite difference formulation for the nodes and (b)
determine the inner surface temperature of the plate by solving those equations.
Insulation
Resistance heater, 800 W
85°C
Base plate
Ar= 0.2 cm
160 cm?
11111111111I
D00000000000000000000000

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