8-127 Water at 200 kPa and 10C enters a mixing chamber at a rate of 135 kg/min where it is mixed steadily with steam entering at 200 kPa and 150C. The mixture leaves the cham- ber at 200 kPa and 55C, and heat is lost to the surrounding air at 20C at a rate of 180 kJ/min. Neglecting the changes in kinetic and potential energies, determine the rate of entropy generation during this process. 180 kJ/min T = 10C 135 kg/min T2=115C Mixing chamber P = 200 kPa T3 = 55C