A steel strip emerges from the hot roll section of a steel
Chapter , Problem 7.32(choose chapter or problem)
A steel strip emerges from the hot roll section of a steel mill at a speed of 20 m/s and a temperature of 1200 K. Its length and thickness are L 100 m and 0.003 m, respectively, and its density and specific heat are 7900 kg/m3 and 640 J/kg K, respectively. Accounting for heat transfer from the top and bottom surfaces and neglecting radiation and strip conduction effects, determine the time rate of change of the strip temperature at a distance of 1 m from the leading edge and at the trailing edge. Determine the distance from the leading edge at which the minimum cooling rate is achieved.
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