For the parameters shown figure Convection coefficients hi = 14, and ho= 12, W/m?.K

 Thermal conductivities ki =0.09, ks= 16, kp = 1, W/m.K, Thicknesses of slabs Li = 0.35, Ls =0.005, Lp = 0.002, in m 

Temperatures :Ti =-25, To = 15 in °C, Area A= 2.5 in m

Find the following:  

The total resistance R.

The overall heat transfer coefficient, U   

The heat transfer, q 

The surface temperature, Tsi  

 

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