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Home Brew Forums > Home Brewing Beer > Electric Brewing > Question for you single vessel, recirculating BIABers and efficiency.
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Old 03-15-2013, 03:49 PM   #1
lakedawgs
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Default Question for you single vessel, recirculating BIABers and efficiency.

I BIABd for a year or so and love it. Just went to a 70qt Coleman mash tun. My kettle is a cut keg.

Am considering moving to electric and want to consider all my options.
I have read some great threads on electric, recirculating, BIAB setups.
What kind of realistic efficiency are you guys getting and also I am going to assume your recirculation is pretty slow due to the grain bed correct?
I like the efficiency I am getting with the mash tun, but if I can go back to one vessel, I would consider that for sure.

Help sway me back to the path of BIAB!
Thanks
Lakedawgs


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Old 03-15-2013, 05:33 PM   #2
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I've been getting right at 70% on my system.
I've only brewed about 3 batches on it so far (SG of 1.041 - 1.056).
I do double crush the grain and I do "warm water" sparge with about 1 gal. of hot tap water (whatever it takes to get the brew kettle up to the desired starting volume).

I do keep the flow rate low.


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Old 03-15-2013, 05:37 PM   #3
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Thanks,
Once I got my old standard BIAB rig dialed in, no pump or anything, I just wrapped the keg in a blanket once the mash temp was set, I was getting 73-75% efficiency.
I get 78-80% with my mash tun setup, but if I can get close to that with a properly setup recirculating BIAB rig I would like to lose the tun. I like one vessel brewing.
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Old 03-15-2013, 07:51 PM   #4
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I get 75-80% with BIAB, grain crushed fine, propane, no recirculation, army blanket thrown over the kettle during the mash, sometimes with a mash out.
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Old 03-15-2013, 08:12 PM   #5
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I am getting 78-80% with FGs ranging from 1.050 to 1.080 with BIAB no sparge, no mash out. I also have a mill and and do a fine crush (about 0.035" gab).

You can get good efficiency with BIAB no sparge. I think that the consistency between batches is more important than the brewhouse efficiency number.
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Old 03-15-2013, 09:36 PM   #6
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I appreciate the input and have over 20 batches under my belt with BIAB. Do any of the previous responders have experience using a heating element and recirculating your mash with a pump during your mash period?
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Old 03-15-2013, 09:41 PM   #7
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I get about the same efficiency when I do constant recirculation, no sparge BIAB as when I use my cooler MLT. I don't change my crush, though.
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Old 03-18-2013, 06:44 PM   #8
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I do electric biab w/recirculation, efficiency for average strength brews is right around 82%.
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Old 03-18-2013, 07:17 PM   #9
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Anybody do it with a 25 gallon pot/basket for ten gallon batches?
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Old 03-19-2013, 12:48 AM   #10
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I biab with a 25 gallon electric pot. I have about 6 batches in with it mostly moderate to higher gravity averaging between 70-75 % efficiency. I Started out trying to not to re-circulate, the pumps are part of the reason I don't use my 3 vessel setup much, however is its much easier to control the temp with a pump. I am now using a self primer pump that's much less of a pain.


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