Water at 20 psia and 50°f enters a mixing chamber at a rate of 300 lbm/min where it is mixed steadily with steam entering at 20 psia and 240°f. the mixture leaves the chamber at 20 psia and 130°f, and heat is lost to the surrounding air at 64°f at a rate of 180 btu/min. neglecting the changes in kinetic and potential energies, determine the rate of entropy generation during this process. use data from the tables.