There's always a lot of opinions on this sort of situation and I guess you have to weigh up your relationship with your manager.
I recently changed jobs myself. However I actually indicated to my manager I had applied for another job (before recieving my letter of offer even) as I felt that we...
have you considered getting the heat exchanger pulled down in scheduled maintanance and inspected for fouling?
I used to run a distillery process where we would pull the condensers down every year and inspect them (for fouling and corrosion)
It does seem odd that the outlet temperature has...
Freezing the solution will be difficult as there's no differentiating layer between the water fraction and the ethanol, it will behave as a single phase and will have a freezing point determined by the ethanol solution.
I think you'll find distillation may be the best option (and probably the...