Oliver Roy Mangosing

Good day! Can DWSIM handle a stream composed of ice and liquid water in equilibrium? I tried creating such a stream by cooling pure liquid water. I slowly adjusted the amount of heat removed until water transitioned from liquid to solid. At no point was there a solid-liquid equilibirium. It just transitioned directly from pure liquid to pure ice. This does not happen however in heating liquid water to vapor. If the amount of heat is slowly increased, there will be points in which vapor and liquid...

I have seawater (5% salt by mass) at 1 degree celsius and 1 atm. This is supposed to be purely liquid with all of the salt dissolved in the water. However, the saltwater property package result shows that this is completely frozen. Also, it shows error "maximum salinity exceeded", when 5% salt should be completely soluble at this conditions. Is this a bug? or am I missing something?

Is it possible to model a vacuum freezer? Vacuum freezing of seawater involves feeding near-freezing seawater to a tank/vessel at a low pressure (around 3.2 mmHg) through a nozzle . This vaporizes some of the water, removing heat and freezing other portions of seawater. This creates pure water vapor and an ice/brine slurry. I have tried combinations of valves and gas-liquid separators. So far, I was only able to produce pure water vapor and a slurry that contained solid salt, solid ice and brine....