Water entering a shell-and-tube heat exchanger at 35?C is to be heated to 75?C by an oil. The oil enters at 110?C and leaves at 75?C. The heat exchanger is arranged for counterflow with the water making one shell pass and the oil two tube passes. If the water flow rate is 68 kg per minute and the overall heat transfer coefficient is estimated from Table 8.1 to be 320W/(m2 K), calculate the required heat exchanger area.GIVENShell in tube counterflow heat exchanger water in shell, oil in tubesOne shell pass, two tube passesWater temperaturesTw,in = 35?CTw,out = 75?COil temperaturesTo,in = 110?CTw,out = 75?CWater flow rate (mn) = 68 kg/min = 1.133 kg/sOverall heat transfer coefficient (U) = 320 W/(m2K)

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Twon 75° C Tain- 110°C OL Taont = 75°C Tuh-35°C Waler