A shell-and-tube heat exchanger has one shell pass and four tube passes. The fluid in the tubes enters at 200?C and leaves at 100?C. The temperature of the fluid entering the shell is 20?C and is 90?C as it leaves the shell. The overall heat transfer coefficient based on the surface area of 12 m2 is 300 W/(m2 K). Calculate the heat transfer rate between the fluids.GIVENA shell-and-tube heat exchanger with one shell pass and four tube passesTemperature of fluid in tubeTt,in = 200?CTt,out = 100?CTemperature of fluid in shellTs,in = 20?CTs,out = 90?COverall heat transfer coefficient (U) = 300 W/(m2 K)Surface area (A) = 12 m2ASSUMPTIONSSteady stateExchanger geometry is countnerflow as shown in Figure8.13

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Tod= 90°C Tun- 200°C Tiaut- 100°C Tah=20°C