The base plate of an iron has a thickness of L = 7 mm and is made from an aluminum alloy (p = 2800 kg/m³, c= 900 J/kg.K.

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The Base Plate Of An Iron Has A Thickness Of L 7 Mm And Is Made From An Aluminum Alloy P 2800 Kg M C 900 J Kg K 1 (26.49 KiB) Viewed 34 times

The base plate of an iron has a thickness of L = 7 mm and is made from an aluminum alloy (p = 2800 kg/m³, c= 900 J/kg.K. k = 180 W/m-K, = 0.80). An electric resistance heater is attached to the inner surface of the plate, while the outer surface is exposed to ambient air and large surroundings at T = Tsur = 25°C. The areas of both the inner and outer surfaces are A, = 0.040 m². Surroundings. Tur Air Th Baseplate (p. c. k. c. q. 1. A.) oooooooo 000.00 60000 If an approximately uniform heat flux of q = 1.5 x 10 W/m² is applied to the inner surface of the base plate and the convection coefficient at the outer surface is h = 10 W/m².K, estimate the time, in s, required for the plate to reach a temperature of 157°C. Hint: Numerical integration is suggested in order to solve the problem.