A 0.3-cm thick aluminum plate has rectangular fins on one side, 0.16 × 0.6 cm, spaced 0.6 cm apart. The finned side is in contact with low pressure air at 38?C and the average heat transfer coefficient is 28.4 W/(m2 K). On the unfinned side water flows at 93?C and the heat transfer coefficient is 283.7 W/(m2 K). (a) Calculate the efficiency of the fins (b) calculate the rate of heat transfer per unit area of wall and (c) comment on the design if the water and air were interchanged.GIVENAluminum plate with rectangular fins on one sidePlate thickness (D) = 0.3 cm = 0.003 mFin dimensions (t × L) = 0.0016 m × 0.006 mFin spacing (s) = 0.006 m apartFinned sideAir temperature (Ta) = 38?CHeat transfer coefficient ( ha ) = 28.4 W/(m2 K)Unfinned sideWater temperature (Tw) = 93?CHeat transfer coefficient ( hw ) = 283.7 W/(m2 K)ASSUMPTIONSThe aluminum is pureWidth of fins is much longer than their thicknessThe system has reached steady stateThe thermal conductivity of the aluminum isconstant

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D=0.3 cm W- L-0.6 m Water 1-0.16 m Alr Ty = 93° C T.= 38° C I-.06m S- 0.6 m