The flow meter was designed so that there is a linear relationship between flower ate and maintained in the outer cylinder. The vent was connected back to the incondensable gas release, to avoid flashing. A kalman filter was then used in simulation to identify heat transfer coefficients from flow meters to each of the first and second effects, a total of five vessels (1a ,1b,1c,2a and 2b). the heat transfer coefficients were than used in the optimization program, where the objective was to maximize the amount of water evaporated from the juice. This is done by calculating the weighted brix of the juice that would leave the second effects, using part of the dynamic evaporator model described above.