7-144 A hot-water stream at 70°C enters an adiabatic mixing chamber with a mass flow rate of 3.6 kg/s, where it is mixed with a stream of cold water at 20°C. If the mixture leaves the chamber at 42°C, determine a) the mass flow rate of the cold water and b) the rate of entropy generation during this adiabatic mixing process. Assume all the streams are at a pressure of 200 kPa. | |
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