A long cylindrically heated rod, 2 cm in diameter, is installed in a vacuum furnace. The surface of the heating rod has an emisivity of 0.9 and is maintained at 1000 K while the interior walls of the...

A long cylindrically heated rod, 2 cm in diameter, is installed in a vacuum furnace. The surface of the heating rod has an emisivity of 0.9 and is maintained at 1000 K while the interior walls of the furnace are at 800 K. Calculate the net rate at which heat is lost from the rod per unit length and the radiation heat transfer coefficient.