Long cylindrical steel rods (ρ = 7833 kg/m3 and cp = 0.465 kJ/kg·°C) of 10-cm diameter are heat treated by drawing them at a velocity of 3 m/min through a 7-m-long oven maintained at 900°C. If the rods enter the oven at 30°C and leave at 700°C, determine
(a) The rate of heat transfer to the rods in the oven and
(b) The rate of entropy generation associated with this heat transfer process.

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oven 90 0 3 m/min Stainless steel, 30°C