A liquid metal transfer pipe ( 1 in outside diameter, 10 ft long) carries mercury, which transfers heat from a nuclear reactor to a heat exchanger. The heat loss from this 10 ft line is minimized by using an insulation, 8 inches thick. Find the heat transfer ( Btu h^-1) through the insulation, if the temperature is on the pipe side is 1000 K and the temperature on the outside is 300 K. The thermal conductivity for the insulation is k= 0.120 + 4.5 x 10^-5 T where T is Farenheit, and k in Btu h^-1 ft^-1 F^-1.