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Consider the base plate of a 1200-W household iron that has a thickness of L 0.5 cm, base area of A 300 cm2, and thermal conductivity of k 15 W/m · °C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside, and the outer surface loses heat to the surroundings at T 20°C by convection. Taking the convection heat transfer coefficient to be h 80 W/m2 · °C and disregarding heat loss by radiation. Evaluate the temperatures at the inner and the outer surfaces. Resistance heater 1200 W Base plate Insulation 300 cm? T = 20°C h

Consider the base plate of a 1200-W household iron that has a thickness of L 0.5 cm, base area of A 300 cm2, and thermal conductivity of k 15 W/m · °C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside, and the outer surface loses heat to the surroundings at T 20°C by convection. Taking the convection heat transfer coefficient to be h 80 W/m2 · °C and disregarding heat loss by radiation. Evaluate the temperatures at the inner and the outer surfaces. Resistance heater 1200 W Base plate Insulation 300 cm? T = 20°C h

Elements Of Electromagnetics
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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Consider the base plate of a 1200-W household iron that has a thickness of L 0.5 cm, base area of A 300 cm2, and thermal conductivity of k 15 W/m · °C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside, and the outer surface loses heat to the surroundings at T 20°C by convection. Taking the convection heat transfer coefficient to be h 80 W/m2 · °C and disregarding heat loss by radiation. Evaluate the temperatures at the inner and the outer surfaces. Resistance heater 1200 W Base plate Insulation 300 cm? T= 20°C h
Transcribed Image Text:Consider the base plate of a 1200-W household iron that has a thickness of L 0.5 cm, base area of A 300 cm2, and thermal conductivity of k 15 W/m · °C. The inner surface of the base plate is subjected to uniform heat flux generated by the resistance heaters inside, and the outer surface loses heat to the surroundings at T 20°C by convection. Taking the convection heat transfer coefficient to be h 80 W/m2 · °C and disregarding heat loss by radiation. Evaluate the temperatures at the inner and the outer surfaces. Resistance heater 1200 W Base plate Insulation 300 cm? T= 20°C h
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