As part of a heat treatment process, cylindrical, 304 stainlesssteel rods of 100 mm diameter are cooled from an initialtemperature of 500°C by suspending them in an oil bath at 30°C. Ifa convection coefficient of 500 W/m2K is maintained by circulationof the oil, how long does it take for the centerline of a rod toreach a temperature of 50°C, at which point it is withdrawn fromthe bath? If 10 rods of length L = 1 m are processed per hour, whatis the nominal rate at which energy must be extracted from the bath(the cooling load)?
