23. (5 points) A pipe is conveying heated fluid. Heat is escaping through the walls of the pipe. The temperature of the inside of the pipe wall is T 241 degC. The temperature on the outer surface of the pipe is T2 79 degC. The pipe wall = 1.2 cm thick. The pipe is 10 meters long - and has a diameter of 150 mm. If the thermal conductivity constant of the W Cho pipe material is=120 then the heat flux is closest to: I m.degC