RE: [Distillers] fermenting and distilling wash in same container without racking
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Thanks ZBob, Interesting energy analysis and advice. I usually run about 1/2 gal/min cooling water through the tower and this has stayed the same even with the increased kettle size. But... I am running a higher flame rate as this is needed to keep the larger volume of wash at temperature (wash temp near bottom of kettle is 182F-ish). After reading many of the blogs it has occurred to me that this extra energy (heat?) might be disrupting thermal layering in the tower. I think I'll try insulating my tower (as it is bare SS) for this next run and see if I can get stablized back to 162F which will hopefully put my drippins bact to 92/93%. Also, am planning to run w/o racking this time but this might create thermal issues by itself w/particulate heat release in the wash boil. Will keep you updated. Thanks again for the help.
--- On Mon, 24/5/10, Robert Hubble <zymurgybob@...> wrote:
From: Robert Hubble <zymurgybob@...>
Subject: RE: [Distillers] fermenting and distilling wash in same container without racking
Date: Monday, 24 May, 2010, 6:41Hi Judomax,
While I've always racked a MUM wash into he still, they are pretty clean, and if you have external heat, like propane, I think you'll be ok. With an electric element, I'd be afarid of scorching.
With the 2 different takeoff rates, it appears that you are putting more energy out the condenser with the second batch, and that could easily explain the increased head temperatures and decreased EtOH concentration. As far as why that much more energy was condensed, I'm not sure, but it has to be some combination of energy input and relative radiated energy loss at the boiler.
Zymurgy Bob, a simple potstiller
To: Distillers@yahoogro ups.com
From: judomax625@yahoo. co.uk
Date: Thu, 20 May 2010 23:25:51 +0000
Subject: [Distillers] fermenting and distilling wash in same container without racking
Hey guys, First, I'm amazed at how much info is now out there on cookin'. I've been cookin for about 10 years now with a stainless and marble reflux still. When I started there was little info on distilling.. .now it seems like everyone has a recipe or technique. Quick question. I'm going to try the MUM recipe and have recently moved into a 45gal SS still(from a previous 15gal keg)and am now wondering if I can just use my kettle as a fermenter and cook off when it's finished fermenting (without racking/clarifying) as this would physically be easier and require less containers/fermente rs? Second question. My system runs about 184-186 proof at 162F at 5400ft MSL and takes about 10hrs to run a 15gal (10% ABV)wash. Interestingly, my new kettle runs (same tower)runs about 180 proof @ 164F and finishes in about 16hrs with a 40 gal wash (10% ABV). Why? Can't quite figure this one out.
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