Question

Upon making an energy balance on the control mass of a problem, a governing equation has been derived for determination of the temperature T(0) within the control mass as 1. dT with the initial condition where T, is the surrounding ambient temperature, Vis the volume of the control mass, A, İs the surface area and èpm > 0 . The usual meanings of the other symbols apply. Obtain the steady-state temperature Tss, ie., TSS-T(1 → the parameters appearing in the above governing equation. , expressed in terms of (5 marks) By defining θ=T-Tss, rewrite the above set of equations-both the governing (a) (b) equation and the initial condition-for θ. Wherever possible, the equations should be written in terms of θ and the thermal time constant, t,, given as Ve hA (12 marks) (c) Given Tu 0) 0C and Tss 100°C, calculate the temperature of the control mass at (8 marks)

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