As part of a heat treatment process, cylindrical, 304

Chapter 5, Problem 5.67

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As part of a heat treatment process, cylindrical, 304 stainless steel rods of 100-mm diameter are cooled froman initial temperature of 500C by suspending them inan oil bath at 30C. If a convection coefficient of 500 W/mK is maintained by circulation of the oil,how long does it take for the centerline of a rod to reacha temperature of 50C, at which point it is withdrawnfrom the bath? If 10 rods of length L = 1 m are processed per hour, what is the nominal rate at whichenergy must be extracted from the bath (the coolingload)?

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