Dephlegmator attributes

[BigSwede]

Fancy topic title for "I have only the vaguest understanding of the difference between a condenser and a dephlagmator."

Condenser - designed to knock down ALL vapor at full power

Deph - designed to condense vapor in a variable sense. No knockdown, 50%, up to 100%

I'm building a Lego (modular) still with separate components. I have a LM head, and a huge 14" shotgun condenser. For reflux, I want something smaller than the big shotgun. I want to make a deph/condenser that can maybe do two things

1) Act as a reflux condenser for LM/VM neutrals

2) Maybe, some day, do true dephlegmator duties. Problem is, everything is 2" in my system, and 2" plated flutes don't really work. I'm thinking there is zero point in having a deph until I build something larger, and plated.

So... I have components made previously for the shotgun, and it'd be no problem making another, smaller condenser/dephlagmator. What should I build into this thing to make it as useful as possible for future projects and configurations? I'm thinking 8" of 2" outer tube, and 7 ea. 1/2" inners. If I place the water outlets on top, it'll limit it to reflux only.

Hope this makes sense. System is 2", 48 liters, 5.5kw. The calculator from the parent site calls for (at 1800 watts reflux) 28" of 1/2" copper at 3.2 liters/min, so 7 tubes 8" long is more than enough. Might be able to compact it down to 5" or even 4", which is appealing.