Question

The base plate of an iron has a thickness ofL = 7 mm and is made from an aluminum alloy (-2800 kg/m, c-900 J/kg . K, k-180 W/m . K, ε- 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-7,-25°C. The areas of both the inner and outer surfaces are As 0.040 m2. An approximately uniform heat flux of is applied to the inner surface of the base plate and the convection coefficient at the outer surface is h 10 W/m2 K, (1) Construct a Matlab m-file for estimating the time required for the plate to reach a temperature of 135°C. (Numerical integration is to be used for solving this task). (2) Construct a second Matlab m-file and run it to obtain the value of unsteady temperature T of the iron as function of time t numerically corresponding to t-0,0.2,0.4...up to 2.0 second. You may copy the results and paste them into a word file
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