5. Evaporation of Sugar Solution in a Triple-Effect Evaporator A triple-effect forward-feed evaporator is being used to evaporate a sugar solution containing 10wt% solids to a concentrated solution of 50%. The BPRC=1.78x+6.222, where x is. wt fraction of sugar in solution. Saturated steam at 205.5kPa[121.1C saturation temperature] is being used. The pressure in the vapor space of the third effect is 13.4kPa. The feed rate is 22680kg/h at 26.7C. The heat capacity of the liquid solutions is: cp=4.192.35xkJ/kg. K. The heat of solution is considered to be negligible. U1 =3123,U2=1987,U3=1136W/m2. K. If each effect has the same surface area, calculate: 1 . the area, 2. the steam rate used, 3. the steam economy