A nuclear fuel element is in the form of a hollow cylinder insulated at inner surface. Its inner and outer radii are 5 cm and 10 cm, respectively. The outer surface gives heat to the fluid at 50°C,...

A nuclear fuel element is in the form of a hollow cylinder insulated at inner surface. Its inner and outer radii are 5 cm and 10 cm, respectively. The outer surface gives heat to the fluid at 50°C, where the unit surface conductance is 100 W/m².K. The thermal conductivity of the material is 50 W/m².K. Find the rate of heat generation so that the maximum temperature in the system will not exceed 200°C.