Making freshwater from seawater by freezing process is depicted in Figure $2.$ The pre$-$chilled seawater is sprayed into a vacuum at low pressure. The cooling required to freeze some of the feed seawater comes from the evaporation of a fraction of the water entering the chamber. The concentration of the brine stream, B$,$ is $4\mathrm{.}8\%$ salt by mass.The pure salt$-$free water vapor is compressed and fed to a melter at a higher pressure, where the heat of condensation of the vapor is removed through the heat of fusion of the ice, which contains no salt. As a result, pure cold water and concentrated brine $(6\mathrm{.}9\%$ by mass$)$ leave the process as products. You need to perform DFA for the systems to:

i$.$ determine the flow rates of streams W and D ii$.$

determine the flow rates of streams C$,$ B$.$ and A per hour