On the same graph plot the copper temperature history

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Reference no: EM13611472

A copper sheet of thickness 2L=2mm has an initial temperature of Ti=118C. It is suddenly quenched in liquid water, resulting in boiling at its two surfaces. For boiling, Newton's Law of Cooling is expressed as q''=h(Ts-Tsat), where Ts is the solid surface temperature and Tsat is the saturation temperature of the fluid (in this case Tsat=100C). The convection heat transfer coefficient may be expressed as h=1010 W/m^2K^3(T-Tsat)^2. Determine the time needed for the sheet to reach a temperature of T=102C. Plot the copper temperature versus time for 0<t<0.5s. On the same graph, plot the copper temperature history assuming the heat transfer coefficient is constant, evaluated at the average copper temperature T=110C. ASsume lumped capacitance behavior.

Reference no: EM13611472

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