Closed-system pressurized fermentation technique! - Page 157 - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > General Techniques > Closed-system pressurized fermentation technique!

View Poll Results: What do you guys think about pressure fermentations? Time for a poll.
I've done it and I liked it just fine! 100 11.83%
I've done it, nothing wrong with it, but prefer normal fermentation techniques. 21 2.49%
I've done it, hate it, and never will do it again! 4 0.47%
I've never done it, but it is on my list! 633 74.91%
I've never done anything. I only brew beer in my mind. 87 10.30%
Voters: 845. You may not vote on this poll

Reply
 
Thread Tools
Old 09-07-2012, 11:39 AM   #1561
WhoZiT
HBT_SUPPORTER.png
 
WhoZiT's Avatar
Recipes 
 
Aug 2011
Tokushima, Japan
Posts: 216
Liked 5 Times on 5 Posts


First and foremost, props to Wortmonger. It took me days to get through this thread. I am amazed by the positive comments that abound through all one hundred some pages. I have never seen a thread, of any kind anywhere, with so much enthusiasm and lack of rants anywhere. The energy here, all focused on a common goal of great beer, is just awesome! The ingenuity, ideas, and more than anything, positive reinforcement is just touching. (no, I'm not crying nor am I drunk... A little buzzed? Yes)

As for myself, I built three spunding valves and plan to start this once I get a couple more couplers and kegs. Exciting! Keep up the good work!
__________________
--------------------------------------------------

"Don't sweat the petty things and don't pet the sweaty things." --George Carlin

 
Reply With Quote
Old 09-08-2012, 11:20 AM   #1562
WortMonger
United States Mashtronaut
HBT_LIFETIMESUPPORTER.png
 
WortMonger's Avatar
Recipes 
 
Nov 2006
Edmond, OK, Oklahoma
Posts: 3,122
Liked 33 Times on 31 Posts


Thanks, your response is exactly how I wanted the thread to be taken and continued. I am just so happy it is still going on after the years, and seems to be well received by the majority. Keep up the information coming in guys. We want even more people to try this and contribute to our knowledge-base.
__________________
"Beer... Nutritious and Delicious!"

"It's like a 15.5 gallon Mr. Beer!"

 
Reply With Quote
Old 09-08-2012, 11:23 AM   #1563
WortMonger
United States Mashtronaut
HBT_LIFETIMESUPPORTER.png
 
WortMonger's Avatar
Recipes 
 
Nov 2006
Edmond, OK, Oklahoma
Posts: 3,122
Liked 33 Times on 31 Posts


Quote:
Originally Posted by MalFet

Great! Just did a traditional English IPA (with dry hopping) in a corny. I'm probably twelve batches in and I see no reason to go back. I've been using a mass flow controller to automate and measure, which has been fun too!

Thanks for your work on this WortMonger!
Tell us more about the mass flow controller please, we want to know more about all the gadgets being used.
__________________
"Beer... Nutritious and Delicious!"

"It's like a 15.5 gallon Mr. Beer!"

 
Reply With Quote
Old 09-08-2012, 12:08 PM   #1564
MalFet
/bɪər nɜrd/
HBT_LIFETIMESUPPORTER.png
 
MalFet's Avatar
Recipes 
 
May 2010
NYC / Kathmandu
Posts: 8,632
Liked 1473 Times on 975 Posts


Quote:
Originally Posted by WortMonger View Post
Tell us more about the mass flow controller please, we want to know more about all the gadgets being used.
Of course!

It's a relatively simple device, and with a bit of vigilance you can get them used on eBay for less than $100. It's a gas flow meter tied to a proportional valve that allows you to precisely control the rate at which gas flows out of a system. If you pair it up with a pressure sensor and a controller of some sort, it works exactly like a spunding valve.

Definitely an over-engineered solution, and I'd only recommend it for people who like playing with this stuff. But, there are a couple of interesting perks:

1) By watching the rate of gas flow, you can see when exactly the fermentation starts slowing down and when it stops. My only regret in moving to pressurized fermentations is that I miss watching the bubbles in the airlock. This is a nice (and more precise) proxy for that.

2) With a bit of programming, you can automate the process. After I pitch my yeast, I pressurize my corny to a few PSI with oxygen to make sure the lid has seated properly. Then, I let it rise to 5 PSI once fermentation has started and vent the excess. But, once the fermentation starts slowing down, my fermentor controller automatically raises the temperature a couple of degrees and ramps the pressure up to whatever my carbonation target is.

3) I'm just starting to play around with this, but in theory it should be possible to calculate a beer's current gravity by tracking the total CO2 released. There are a few assumptions that go into math (the same ones used to estimate ABV from gravity readings), and I'm still looking at the data to see if this will work reliably. Initial results are promising though!
__________________
"Be excellent to each other." -Benjamin Franklin

Mysticmead Likes This 
Reply With Quote
Old 09-08-2012, 12:41 PM   #1565
WortMonger
United States Mashtronaut
HBT_LIFETIMESUPPORTER.png
 
WortMonger's Avatar
Recipes 
 
Nov 2006
Edmond, OK, Oklahoma
Posts: 3,122
Liked 33 Times on 31 Posts


OMG that is the stuff we need to read about and see pictures of here! Too cool! Now I have to go research all the crud you just talked about to see if I need it too,
__________________
"Beer... Nutritious and Delicious!"

"It's like a 15.5 gallon Mr. Beer!"

 
Reply With Quote
Old 09-08-2012, 12:43 PM   #1566
MalFet
/bɪər nɜrd/
HBT_LIFETIMESUPPORTER.png
 
MalFet's Avatar
Recipes 
 
May 2010
NYC / Kathmandu
Posts: 8,632
Liked 1473 Times on 975 Posts


Quote:
Originally Posted by WortMonger View Post
OMG that is the stuff we need to read about and see pictures of here! Too cool! Now I have to go research all the crud you just talked about to see if I need it too,
I'm going to do a full write-up once I get all the rough edges sanded off. In the meantime, I'm happy to answer any questions I can!
__________________
"Be excellent to each other." -Benjamin Franklin

 
Reply With Quote
Old 09-08-2012, 02:43 PM   #1567
WortMonger
United States Mashtronaut
HBT_LIFETIMESUPPORTER.png
 
WortMonger's Avatar
Recipes 
 
Nov 2006
Edmond, OK, Oklahoma
Posts: 3,122
Liked 33 Times on 31 Posts


Thanks, and please post a link once you do. Interesting stuff there.
__________________
"Beer... Nutritious and Delicious!"

"It's like a 15.5 gallon Mr. Beer!"

 
Reply With Quote
Old 09-09-2012, 09:18 AM   #1568
dinnerstick
 
dinnerstick's Avatar
Recipes 
 
Nov 2010
utrecht, netherlands
Posts: 2,023
Liked 267 Times on 196 Posts


hi, awesome thread. i haven't even read a fraction of it yet, hopefully i will find the time soon. it's a bit odd sticking my project right after malfet's awesome write-up about calculating fermentation based on co2 output, but here goes. i'm looking for suggestions / critique. i have never done a pressurized ferment. my father and i were recently making a stand-alone peltier based temp control for fermenting in cornys (which looks horrific but works a treat):
http://www.homebrewtalk.com/f51/my-u...l-junk-350722/
and i mentioned making a spunding valve. he can't resist a challenge, and has a metal/plastic lathe, so he made this thing out of the existing pressure relief valve of a corny lid. it uses the existing plug and spring, with a metal collar to loosen the tension on the spring, all encased in a plastic collar that screws into the corny lid, and then has a screw that adjusts the tension of the spring. i tested it once on a pressurized keg, i could dial down to a set PSI, release the pressure, and when i re-pressurized it, it would return to the same psi. is this gonna work?? i also have a pressure gauge permanently fixed to a keg post, so i would ferment with the 'out' dip tube in place and the pressure gauge on the 'in' post. i guess that after cold crashing i would have to release pressure and swap out the pressure valve post for a regular in post for pushing the beer to the serving keg? not sure yet... if anyone has knocked together something similar could someone please point me in the right direction? i hate to post without first reading the whole thread but i don't have the time at the moment! and thanks in advance for any suggestions, or if you predict any problems or snags. (all photos f/1.8)
Click image for larger version

Name:	DSC_9176.jpg
Views:	447
Size:	56.8 KB
ID:	74996   Click image for larger version

Name:	DSC_9178.jpg
Views:	447
Size:	76.3 KB
ID:	74997   Click image for larger version

Name:	DSC_9179.jpg
Views:	421
Size:	24.3 KB
ID:	74998   Click image for larger version

Name:	DSC_9180.jpg
Views:	448
Size:	44.5 KB
ID:	74999   Click image for larger version

Name:	DSC_9181.jpg
Views:	432
Size:	59.4 KB
ID:	75000  


Reason: minor correction!

 
Reply With Quote
Old 09-09-2012, 03:31 PM   #1569
helibrewer
HBT_SUPPORTER.png
 
helibrewer's Avatar
Recipes 
 
Nov 2011
Santa Rosa, CA
Posts: 3,709
Liked 299 Times on 254 Posts


Nice DIY work! For your pressure gauge, you could connect it via a short piece of tubing to a regular Corney quick connect, that way you wouldn't have do any hardware reconfiguration when it's time to dispense.
__________________
Something is always fermenting....
"It's Bahl Hornin'"

Primary:
Brite Tank/Lagering:
Kegged: Sour Saison, Pale Ale, Aggie Ale, Firestone DBA, De Koninck Blonde
Bottled: Belgian Quad (Grand Reserve), Derangement (Belgian Dark Strong)
On Deck: Pliny the Younger

 
Reply With Quote
Old 09-09-2012, 05:35 PM   #1570
WortMonger
United States Mashtronaut
HBT_LIFETIMESUPPORTER.png
 
WortMonger's Avatar
Recipes 
 
Nov 2006
Edmond, OK, Oklahoma
Posts: 3,122
Liked 33 Times on 31 Posts


Yep, gas is gas no matter the direction it is flowing. The gauge would not interfere with incoming CO2 and would even be neat to have right there in the keg during transfer.
__________________
"Beer... Nutritious and Delicious!"

"It's like a 15.5 gallon Mr. Beer!"

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Teri Fahrendorf's article on Closed System Pressurized Fermentation WortMonger General Techniques 6 12-15-2012 02:40 PM
Closed System Wort Cooling Works The Pol Equipment/Sanitation 32 10-15-2009 10:58 PM
Closed System Brewing Kettle....Project fifelee Brew Stands 19 10-10-2008 03:08 PM
Carboy to Keg - Closed system Orfy Bottling/Kegging 3 09-02-2007 04:50 PM
Closed system racking Brewing Clamper Bottling/Kegging 5 08-17-2007 09:02 PM


Forum Jump