Heat removal of a cooling coil. a cooling coil of 1.0 ft of 304 stainless-steel tubing having an inside diameter of 0.25 in. and an outside diameter of 0.40 in. is being used to remove heat from a bath. the temperature at the inside surface of the tube is 40 degrees fahrenheit and is 80 degrees fahrenheit on the outside. the thermal conductivity of 304 stainless steel is a function of temperature:
k=7.75+7.78 x 10^-3t
where k is in btu/h*ft*fahrenheit and t is in fahrenheit. calculate the heat removal in btu/s and watts.