## Water jacket size

Expand Messages
• Hi Tony, in calculating the size of the product condenser (Liebig) , what size ratio is okay for the outer jacket to the inner vapour pipe? i.e. if I use a
Message 1 of 5 , Feb 3, 2003
Hi Tony,

in calculating the size of the product condenser (Liebig) , what size ratio is okay for the outer jacket to the inner vapour pipe? i.e. if I use a 15mm inner for the vapour to pass through, is a 25mm outer for the water jacket okay? I would use a bigger outer if I could and ignore this question, but I can only readily get a 15mm/25mm reducer for the ends of the condenser. If the outer needs to be bigger, i.e. 40mm I can make it out of PVC and pass the copper 15mm inner through.

Cheers, Rob
• ... It comes down to what s practical. I d say that as long as the gap is wide enough for the water to flow through (at the rate you want), then its fine.
Message 2 of 5 , Feb 3, 2003
>in calculating the size of the product condenser (Liebig) , what size ratio is okay for the outer jacket to the inner vapour pipe? i.e. if I use a 15mm inner for the vapour to pass through, is a 25mm outer for the water jacket okay? I would use a bigger outer if I could and ignore this question, but I can only readily get a 15mm/25mm reducer for the ends of the condenser. If the outer needs to be bigger, i.e. 40mm I can make it out of PVC and pass the copper 15mm inner through.

It comes down to what's practical. I'd say that as long as the gap is wide enough for the water to flow through (at the rate you want), then its fine. Your 15/25 combo should be OK. Just as a rule of thumb I'd like a 5mm gap either side, so +10mm diameter is perfect.

Too narrow will only be a problem if its preventing you from getting enough water through the unit (eg you wouldn't aim for a 2mm gap).

There's no real advantage in going larger, but it isn't going to be a problem other than say if the unit gets too big and bulky.

Tony
• I just put a 1/2 inch (12.7 mm ID or 15mm OD) piece of copper inside of a 1 inch piece of copper (25 mm ID) and I think those sizes will work well with each
Message 3 of 5 , Feb 3, 2003
I just put a 1/2 inch (12.7 mm ID or 15mm OD) piece of copper inside
of a 1 inch piece of copper (25 mm ID) and I think those sizes will
work well with each other.

if you are using copper for the ethanol passage, the only problem I
can see by using plastic pipe for the water jacket is the seal
between copper to plastic.

a restricted coolant flow inside the jacket (or the rest of the
coolant system) will tend to build coolant flow pressure through out
the entire system. The pressure will work against the seal between
copper and plastic fittings.

by using large diameter tubing (12.7 or 15 mm ID tubing) to flow the
coolant, the sealing surfaces will have to deal with more flow and
less pressure. Which is easier to accomplish with glues and
compression fittings.

just things to consider.

--- In Distillers@yahoogroups.com, Robert Stam <Robert.Stam@b...>
wrote:
> Hi Tony,
>
> in calculating the size of the product condenser (Liebig) , what
size ratio
> is okay for the outer jacket to the inner vapour pipe? i.e. if I
use a 15mm
> inner for the vapour to pass through, is a 25mm outer for the water
jacket
> okay? I would use a bigger outer if I could and ignore this
question, but I
> can only readily get a 15mm/25mm reducer for the ends of the
condenser. If
> the outer needs to be bigger, i.e. 40mm I can make it out of PVC
and pass
> the copper 15mm inner through.
>
> Cheers, Rob
• Thanks guys for the reply. I ll go ahead and use the 15mm/25mm reducers. Cheers, Rob ... From: CornFed (Randy)
Message 4 of 5 , Feb 3, 2003
Thanks guys for the reply. I'll go ahead and use the 15mm/25mm reducers.

Cheers, Rob
-----Original Message-----
From: CornFed (Randy) <cornfed15@...> [mailto:cornfed15@...]
Sent: Tuesday, 4 February 2003 10:30
To: Distillers@yahoogroups.com
Subject: [Distillers] Re: Water jacket size

I just put a 1/2 inch (12.7 mm ID or 15mm OD) piece of copper inside
of a 1 inch piece of copper (25 mm ID) and I think those sizes will
work well with each other.

if you are using copper for the ethanol passage, the only problem I
can see by using plastic pipe for the water jacket is the seal
between copper to plastic.

a restricted coolant flow inside the jacket (or the rest of the
coolant system) will tend to build coolant flow pressure through out
the entire system.  The pressure will work against the seal between
copper and plastic fittings.

by using large diameter tubing (12.7 or 15 mm ID tubing) to flow the
coolant, the sealing surfaces will have to deal with more flow and
less pressure.  Which is easier to accomplish with glues and
compression fittings.

just things to consider.

--- In Distillers@yahoogroups.com, Robert Stam <Robert.Stam@b...>
wrote:
> Hi Tony,

> in calculating the size of the product condenser (Liebig) , what
size ratio
> is okay for the outer jacket to the inner vapour pipe? i.e. if I
use a 15mm
> inner for the vapour to pass through, is a 25mm outer for the water
jacket
> okay? I would use a bigger outer if I could and ignore this
question, but I
> can only readily get a 15mm/25mm reducer for the ends of the
condenser. If
> the outer needs to be bigger, i.e. 40mm I can make it out of PVC
and pass
> the copper 15mm inner through.

> Cheers, Rob

To unsubscribe from this group send an email to  distillers-unsubscribe@onelist.com