#7 parts i) and ii)

7) Heat Removal from a Bath with Cooling Coil. A cooling coil of 1.0ft of 304 stainlesssteel tubing having an inside diameter of 0.25in. and an outside diameter of 0.40in. is being used to remove heat from a bath. The temperature at the inside surface of the tube is 40F and is 80F on the outside. Calculate the heat removal in Btu/s and Watts: i) If the thermal conductivity of 304 stainless steel is a function of temperature: k=7.75+7.78103T where k is in Btu/(h.ft.F) and T is in F. ii) For a cooling coil made of 308 stainless-steel having an average thermal conductivity of 15.23mKW. Assume same conditions apply as in part (i)