You have a pipe filled with hot water that is being transferred to another location through air. The diameter of the pipe is 0.1m, and the length is 20m. You want to keep the water hot inside the pipe and you need to choose a material that will help. The temperature of water entering the pipe is 90C. The temperature of the air is 20C. Stainless steel 303 has an emissivity of 0.74 , polished stainless steel has an emissivity of 0.16 and shiny copper is 0.07 . The wind speed outside is 1m/s resulting in forced heat transfer coefficient of 9.5W/m2K. The water is flowing through the pipe at 0.5kg/s and results in a heat transfer coefficient of 684W/m2K. You can assume the temperature of the pipe is 88C. a. Calculate the resistance from radiation for each type of material