Author Topic: Bottling From Keg Carbonation/Temperature  (Read 5835 times)

Offline patrickswayze

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Bottling From Keg Carbonation/Temperature
« on: July 17, 2012, 12:02:08 PM »
So my question is in regards to temperature and carbonation and their role on bottled beer from a keg. So say if you bottle your beer from your keg at 45'F as an example. You you have purged the bottle of oxygen as well as the head space once the bottle is filled. Assuming that your beer is done fermenting, fully carbonated and had reached equilibrium in the keg, will your carbonation change as the temp of the beer in the bottle changes? What i am getting at is would the beer foam over if you opened say at 70'F leaving your beer slightly flat since i would think the beer could hold less co2. Maybe i am over thinking it but since i cannot control the temp in which people drink my beer at, the last thing i want is a foamy bottle of beer. If i open commercial beer warm, it doesn't foam over and is still carbonated. How does this work, someone please enlighten me. Thanks

P.S. I am new to kegging if you haven't noticed

Offline tygo

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Re: Bottling From Keg Carbonation/Temperature
« Reply #1 on: July 17, 2012, 05:17:39 PM »
The level of carbonation won't change in the bottle once it's bottled and capped, presuming it's fully finished fermenting.

However, you probably will lose some amount of carbonation going from the keg to the bottles, so having the beer carbed slightly higher than your desired serving volume in the keg, before transferring, is probably a good idea.
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Offline jmcamerlengo

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Re: Bottling From Keg Carbonation/Temperature
« Reply #2 on: July 18, 2012, 12:10:05 PM »
The level of carbonation won't change in the bottle once it's bottled and capped, presuming it's fully finished fermenting.

However, you probably will lose some amount of carbonation going from the keg to the bottles, so having the beer carbed slightly higher than your desired serving volume in the keg, before transferring, is probably a good idea.

With no real way of measuring other than my own taste buds, when bottling from a BeerGun, that I lose approximately .2 volumes of CO2 on the transfer. So if I want 2.5 volumes in a bottle I carbonate to 2.7 volumes in the keg. This is of course trivial and probably not "true" but it seems to be a good working rule of thumb for me.
Jason
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Offline Joe Sr.

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Re: Bottling From Keg Carbonation/Temperature
« Reply #3 on: July 18, 2012, 12:53:48 PM »
The last bottle I opened that was filled from a keg was under-carbonated.  The keg was over-carbonated, so I was not expecting this problem.

I still have some work to do on perfecting this...

Make sure your bottles are cold when you bottle.  If they are warm, you will lose much more carbonation before you get the bottles capped.
It's all in the reflexes. - Jack Burton

Offline euge

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Re: Bottling From Keg Carbonation/Temperature
« Reply #4 on: July 18, 2012, 05:56:43 PM »
Chill that beer down to near freezing. This will save you some carbonation loss. Are you using a counter-pressure filler? You shouldn't lose much if at all.

The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman

Offline Joe Sr.

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Re: Bottling From Keg Carbonation/Temperature
« Reply #5 on: July 19, 2012, 07:52:08 AM »
I'm using the home-made job with stopper and racking cane.  It has worked well in the past.

I think the last few bottles I was lazy and did not chill the bottles.  I had a fair amount of foaming.
It's all in the reflexes. - Jack Burton

Offline Pinski

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Re: Bottling From Keg Carbonation/Temperature
« Reply #6 on: July 19, 2012, 08:35:23 AM »
Chill that beer down to near freezing. This will save you some carbonation loss. Are you using a counter-pressure filler? You shouldn't lose much if at all.
+1
chilling the bottles if possible helps too
Thank you BEER!

Offline dbarber

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Re: Bottling From Keg Carbonation/Temperature
« Reply #7 on: July 19, 2012, 11:49:59 AM »
I chill the beer down to 32 when I use the beer gun; I've found that the temperature of the bottles doesn't matter as long as they are wet. 
Dave Barber
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Offline kylekohlmorgen

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Re: Bottling From Keg Carbonation/Temperature
« Reply #8 on: July 19, 2012, 12:17:14 PM »
and fill 'em REALLLLL SLOWWWW.

Patience pays off - esp when bottling high-carb beers or hoppy beers.
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Offline patrickswayze

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Re: Bottling From Keg Carbonation/Temperature
« Reply #9 on: July 19, 2012, 12:34:28 PM »
Chill that beer down to near freezing. This will save you some carbonation loss. Are you using a counter-pressure filler? You shouldn't lose much if at all.

I have a buddies Blichmann Beer Gun that I am going to use

Offline drmario47

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Re: Bottling From Keg Carbonation/Temperature
« Reply #10 on: July 20, 2012, 09:29:19 AM »
Chill that beer down to near freezing. This will save you some carbonation loss. Are you using a counter-pressure filler? You shouldn't lose much if at all.

I have a buddies Blichmann Beer Gun that I am going to use

I was thinking about buying one of these beer guns. Do you know if it works well or is a counterpressure filler the way to go?

Offline dbarber

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Re: Bottling From Keg Carbonation/Temperature
« Reply #11 on: July 20, 2012, 10:33:54 AM »
Chill that beer down to near freezing. This will save you some carbonation loss. Are you using a counter-pressure filler? You shouldn't lose much if at all.

I have a buddies Blichmann Beer Gun that I am going to use

I was thinking about buying one of these beer guns. Do you know if it works well or is a counterpressure filler the way to go?

I have never used a counter pressure filler, but I love my beer gun....super easy to use.
Dave Barber
Orwigsburg, PA
Lehigh Valley Homebrewers

Offline gordonstrong

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Re: Bottling From Keg Carbonation/Temperature
« Reply #12 on: July 21, 2012, 04:14:16 PM »
The Blichmann Beer Gun is the best bottle filler I've ever used.  I've got about 6 different counter-pressure ones, but they all have issues.  I don't use it often, but every time I pull it out, I'm amazed at how well it works.
Gordon Strong • Beavercreek, Ohio • AHA Member since 1997 • Twitter: GordonStrong

Offline ajk

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Bottling From Keg Carbonation/Temperature
« Reply #13 on: July 22, 2012, 02:38:14 AM »
I'll offer more praise for the Beer Gun.  One-handed operation, the ability to purge the bottle and headspace with CO2, easy to clean. My only complaint is the tiny rubber stopper, which tends to fall off and get lost, sometimes in a bottle of beer!  (Thankfully, it was in the first bottle I checked.).  John is a really approachable guy, supportive of local clubs and competitions (the winner of the Indiana State Fair competition wins a Boilermaker brew pot), and he attends NHC every year.

Offline bluesman

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Bottling From Keg Carbonation/Temperature
« Reply #14 on: July 22, 2012, 05:24:06 AM »
+1 to the Beer Gun.  It's so easy to use and maintain plus it yields great results. I chill my beer down to at least 40F but colder is even better.  The bottle temp is not a significant factor in my experience.   
I typically carbonate the beer in the keg a slight bit more than ideal to allow for some loss in the transfer process.
Ron Price