Steam in a heating system flows through tubes whose outer diameter is 3 cm and whose walls are maintained at a temperature of 127C. Circular aluminum alloy fins (k = 180 W/mK) of outer diameter 6 cm and constant thickness t= 2 mm are attached to the tube, as shown in the figure. The space between the fins is 3 mm. Thus, there are 200 fins per meter length of the tube. Heat is transferred to the surrounding air at 25C, with a combined heat transfer coefficient of 60 W/m2.K. Determine the increase in heat transfer from the tube per meter length as a result of the attached fins. Efficiency of these circular fins is given to be 0.96. r2 = 3 cm H = 1.5 cm o T. h To 1 = 2 mm S = 3 mm The increase in heat transfer is 4974.7 W