Seawater containing 3.50 wt% salt passes through a series of 9 evaporators. Roughly equal quantities of water are vaporized in each of the 9 units and then condensed and combined to obtain a product stream of fresh water.
The brine leaving each evaporator but the 9th is fed to the next evaporator.
The brine leaving the 9th evaporator contains 4.70 wt% salt. It is desired to produce 1 x 104 L/h of fresh water.1) How much seawater must be fed to the process?(in kg/h)2) What is the mass flow rate of concentrated brine out of the process?(in kg/h)3) What is the weight percent of salt in the outlet from the 4th evaporator?4) What is the fractional yield of fresh water from the process (kg H2O recovered/kg H2O in process feed)?