StillSmart

Re: Freeze Stripping Problems.

2017-07-04T21:57:28+00:00

I have been thinking about freeze stripping recently.
Perforce it has to push more tails through the still, (unless you switch off early),
while making the wash smaller in size, and making the still run happen more quickly.
One day I may have freezer space to try it.

Robert.

Statistics: Posted by Easydrinker — Tue Jul 04, 2017 9:57 pm

Re: Freeze Stripping Problems.

2017-07-04T19:06:56+00:00

At what point do you get the whole lot back and say O Buga.....

Statistics: Posted by packapoo — Tue Jul 04, 2017 7:06 pm

Re: Freeze Stripping Problems.

2017-07-04T06:14:21+00:00

OK I have done some more tests.

The sweetspot for freezing is 2-4 days (depending on temp) and the centre is hollow. This pours quite quickly. Leaving it inverted (stage 2) while thawing yields a little more in the next couple of hours.

If you miss this sweetspot it will freeze ALMOST solid. I did one for 2 weeks. There is little pour off. Inverting while thawing will still work with a significant amount in a few hours but overnight works well. Yield is the same.

I made an inner bucket to support the inverted fermenter with holes in the bottom.

Statistics: Posted by Mash — Tue Jul 04, 2017 6:14 am

Re: Freeze Stripping Problems.

2017-05-08T21:05:26+00:00

Does need time to freeze enough.

Statistics: Posted by Mash — Mon May 08, 2017 9:05 pm

Re: Freeze Stripping Problems.

2017-05-08T19:53:17+00:00

I thought mine was -18 earlier in the post but wasn't 100% sure.

I ended up defrosting the whole lot of this wash and stripping it the normal way in the Airstill. Will be making another wash in the next day or so. Still going to give freeze distilling another go, will just leave it for two days and see how I get on.

Statistics: Posted by Chubbs — Mon May 08, 2017 7:53 pm

Re: Freeze Stripping Problems.

2017-05-07T22:55:52+00:00

Domestic freezers are designed to operate at -18°C.
If yours doesn't it needs fixing.

Robert.

Statistics: Posted by Easydrinker — Sun May 07, 2017 10:55 pm

Re: Freeze Stripping Problems.

2017-05-06T19:25:18+00:00

Cool we havnt had a knobhead here for a while

Statistics: Posted by Brewhunter — Sat May 06, 2017 7:25 pm

Re: Freeze Stripping Problems.

2017-05-06T07:37:15+00:00

-10 will be fine.

If you are using the youngs wide mouth, lift it by the opening when frozen. Much safer.

Statistics: Posted by Mash — Sat May 06, 2017 7:37 am

Re: Freeze Stripping Problems.

2017-05-05T15:57:37+00:00

I cant seem to find any chest freezers that go any lower that -10 will they be ok ? or does it have to be -15 for the best results ?

Statistics: Posted by tealby — Fri May 05, 2017 3:57 pm

Re: Freeze Stripping Problems.

2017-04-27T05:46:42+00:00

Yes. I think so.

Warmer temperatures seem to have a runaway effect, as they drop they seem to accelerate through zero. Momentum if you like.

Chilled temperatures seem to take much longer.

Statistics: Posted by Mash — Thu Apr 27, 2017 5:46 am

Re: Freeze Stripping Problems.

2017-04-26T22:20:27+00:00

So, if intending freeze stripping, is it best then to chill wash prior freezing?

Statistics: Posted by packapoo — Wed Apr 26, 2017 10:20 pm

Re: Freeze Stripping Problems.

2017-04-26T21:52:00+00:00

That does have logic.

Robert.

Statistics: Posted by Easydrinker — Wed Apr 26, 2017 9:52 pm

Re: Freeze Stripping Problems.

2017-04-26T05:32:31+00:00

Temperature of wash warm (15c) or chilled (1c) will freeze at different speeds. Chilled will freeze slower this creating crystals, which I think could be important for draining!

Statistics: Posted by Mash — Wed Apr 26, 2017 5:32 am

Re: Freeze Stripping Problems.

2017-04-26T00:10:00+00:00

It is fine, stick the needle in my eye, I am lost anyway.

Robert.

Statistics: Posted by Easydrinker — Wed Apr 26, 2017 12:10 am

Re: Freeze Stripping Problems.

2017-04-26T00:00:23+00:00

A warmer wash will (I think) freeze more unevenly as in outside first while inside retains heat, so it seems to me like a cooler starting point would enable more alcohol extraction as the alcohol will be evenly distributed from inside to outside at a certain level of your bucket. I am open to being told that the alcohol will go to the centre as the water on the outside freezes.

I will also leave it to others to say whether alcohol "sinks" or "swims" to some extent within solution and so whether inversion is helpful.

Statistics: Posted by Curmudgeon — Wed Apr 26, 2017 12:00 am