Q2 (40 min): An insulated heat exchanger is used to heat the domestic hot water supply using two separate streams of hot water supplied from two different solar collectors. The two hot water supply temperatures from the collectors are 353K and 323K. The flow configuration and mass flow rates are shown below. The domestic hot water is heated from 283K to 328K. Determine the rate of entropy generation in the heat exchanger. Assumptions: This is a steady-state flow process since there is no change with time. The kinetic and potential energy changes are negligible