An overhead 25-m-long, uninsulated industrial steam pipe of 100 mm diameter is routed through a building whose walls and air are at 25°C. Pressurized steam maintains a pipe surface temperature of 150°C, and the coefficient associated with free convection is h = 10 W/m2 . K . The surface emissivity is ε = 0.8. What is the heat transfer rate from the steam line? Would applying a low emissivity coating (ε = 0.10) to the pipe exterior surface change the heat transfer rate significantly?