I found myself worried about this too, it looked like a realy big hole down the
centre of my double coil my way of geting around this was done by inserting a
sleved condenser into the center of the first coil, the outside of which
supplies the water to the coils, a thin tube inside it takes water to the
closed bottom end of the outer.
Even experienced plumbers will then frown and be confused, but eficiency should
I have tried to attach a shonky drawing to explain.
Hope it might help
Tony & Elle Ackland wrote:
> Purely guessing here, but I don't think that being "forced" out the top
> will be a problem - as the vapour condenses, it will reduce in volume by a
> factor of about 500-900, so provided it can touch the wall of the
> condensor, it will shrink quite rapidly, and stop the "push" out the top.
> 20mm is a reasonable size too - I'm making one of the Nixon/Stones using
> just 25mm OD for the main section - which has to handle both vapour &
> reflux liquid - with a 1300W element (and I'm hoping to avoid it flooding).
> The critical issue will be to ensure that all the vapour gets a chance to
> meet the condensor wall somehow - eg avoid some vapour merely staying in
> the centre of the condensor all the way out. Maybe a couple of very loose
> / widely teased stainless steel scrubbers in the top of the condensor might
> give some cold surface area in the centre of it to catch & contact any
> elusive vapour ??
> I figure its worth a crack anyhow,