The liquid is transported with the help of a metal pipe. The liquid metal pipe is embedded in a 1.5 m thick wall, and the temperature of the wall at the point where it is buried is required to be 600 Kelvin (K) in order for the metal to remain liquid in the pipe. The internal temperature of the hot surface of the wall is 900 K. The other surface of the wall is in contact with air at 310 K (Heat transfer coefficient of air, h = 23 W/mK). The heat conduction coefficient (k) changes with temperature and is given by the equation below. 900 K 1.5 m Thava 310K X L= ?? 600 K k=0.0073(1+0054T) a) How far away from the hot surface should the point where the pipe is at 600 K be? b) What is the heat flux in the wall?