7-125 An adiabatic heat exchanger is to cool ethylene glycol (cp = 2.56 kJ/kg · °C) flowing at a rate of 2 kg/s from 80 to 40°C by water (cp = 4.18 kJ/kg · °C) that enters at 20°C and leaves at 55°C. Determine a) the rate of heat transfer and b) the rate of entropy generation in the heat exchanger. | |
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