I am trying to understand how best to analyze the following situation:
I have solvent vapor rising from a vessel into a condenser, condensing, and then flowing out as a liquid back into the vessel. I’m interested in understanding what type of analysis I should do to determine if a given pipe size is sufficient for the vapor leg. One point of confusion I have is how buoyancy factors into this situation.
My initial thought is, using operating temperatures, calculate the vapor pressure of the solvent at the vessel and condenser (T_vessel > T_condenser) and use that difference in temperature as the driving force, assume some pipe size, and work back to a flowrate and see if that flowrate makes sense. I’d have to make some other assumptions like laminar flow and what Fanning friction factor I wanted to use. I’m also ignoring any effects from height change and I don’t know if that’s plausible; I’m thinking the height change is in the 10’s of feet type of range and my pressures will be relatively low.