We concentrate a sugar solution (m=20kg/s ) from 12% to 40% dry matter content (mass). This takes place in an evaporator where we use condensing steam at 120C as an energy source. The evaporation takes place at 100C according to the figure above and the properties of the sugar solution can estimated to be similar to the properties of water. To improve the heat economy, we have a heat exchanger to preheat the incoming the sugar solution with the concentrate. a) Determine the amount of primary steam needed. b) What is the temperature of the sugar solution after the heat exchanger