A process fluid having a specific heat of 3500 J/kg?K and flowing at 2 kg/s is to be cooled from 80 °C to 40 °C with chilled water, which is supplied at a temperature of 15 °C and a flow rate of 2.5 kg/s. Assuming an overall heat transfer coefficient of 2000 W/m2?K, calculate the required heat transfer areas for the following exchanger configurations: (a) Parallel flow; (b) Counter flow; (c) a 1-2 shell and tube exchanger with the water on the shell side, (d) a 2-4 shell and tube exchanger with water on the shell side.
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