A 3.0cm diameter SS bars 10cm long have ground surfaces and are exposed to air with a surface roughness of about 1m. If the surface are pressed together with a pressure of 50atm and the two bar combination is exposed tos an overll temperature difference of 100C, calculate the axial heat flow and the temperature drop across the contact surface. You may assume that contact resistance of the air gap is reciprocal of convective heat transfer coefficient of air in the gap. (1/hc=5.28104m20C/W). A 3.0cm diameter SS bars 10cm long have ground surfaces and are exposed to air with a surface roughness of about 1m. If the surface are pressed together with a pressure of 50atm and the two bar combination is exposed tos an overll temperature difference of 100C, calculate the axial heat flow and the temperature drop across the contact surface. You may assume that contact resistance of the air gap is reciprocal of convective heat transfer coefficient of air in the gap. (1/hc=5.28104m20C/W)