Take a look at the drawing. If I am using a brazed plate heat exchanger as the evaporator, does it make sense to use a phase separator prior to the heat exchanger so that I do not have two phase flow entering it?

Phase Separator.png

It seems like the phase separator is just an accumulator in a flooded evaporator... Is that right?

The only downside I can see is that the gas which is bypassing the heat exchanger does not get any super heat... But If I have a heat exchanger dedicated to superheating the gas, then this is not a problem.