Engine oil flows through a 25-mm-diameter tube at a rate
Chapter , Problem 8.26(choose chapter or problem)
Engine oil flows through a 25-mm-diameter tube at a rate of 0.5 kg/s. The oil enters the tube at a temperature of 25 C, while the tube surface temperature is maintained at 100 C. (a) Determine the oil outlet temperature for a 5-m and for a 100-m long tube. For each case, compare the log mean temperature difference to the arithmetic mean temperature difference. (b) For 5 L 100 m, compute and plot the average Nusselt number and the oil outlet temperature as a function of L.
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