Coldbreak Brewing Giveaway - Open to All!

Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Keg Headspace And Carbonation Time
Reply
 
Thread Tools
Old 01-15-2011, 04:16 PM   #1
devriems
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Posts: 5
Default Keg Headspace And Carbonation Time

I've done some searching but haven't been able to come up with an answer to this yet. Hoping somebody here can help. I'm wondering if the amount of headspace in a keg has any impact on how long it takes to force carbonate the beer inside it.

The reason i ask is because I recently kegged a batch of pale ale. I ended up with about 7.5 gallons (don't ask how that happened) so i filled on keg full and the other about half full. They have both been under pressure (10 psi @ 36 degrees F) for over two weeks now. The full keg is carbonated perfectly. The half full keg is only about half way there. Can anybody shed some light on why that might be?


devriems is offline
 
Reply With Quote
Old 01-15-2011, 08:28 PM   #2
Eisendrath
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: USA, CT
Posts: 184
Liked 3 Times on 2 Posts

Default

did you purge the 1/2 keg really well several times to get most of the air out? remaining air will spoil the beer in time. i don't know if it will block the CO2 but it will share contact area with the CO2 and possibly slow entry. When in this situation I always fill to 15psi making ½CO2 / ½air, then dump the pressure thru the releif valve, then repeat to get 3/4 CO2 & ¼ air, then repeat 4 or five times to get mostly CO2.


Eisendrath is offline
 
Reply With Quote
Old 01-19-2011, 02:17 AM   #3
devriems
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Posts: 5
Default

Yes, I purged the air out of the keg really well. However, (now this might just be in my head) it seems that the beer from the keg in question is a bit different from the beer in the full keg. It still isn't completely carbonated so I'll give it another couple of weeks and see how the situation changes.
devriems is offline
 
Reply With Quote
Old 02-13-2011, 05:30 PM   #4
iijakii
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
iijakii's Avatar
Recipes 
 
Join Date: Jun 2010
Location: Portland, OR
Posts: 2,112
Liked 208 Times on 156 Posts
Likes Given: 290

Default

Bump!

How much longer did it take?
iijakii is offline
 
Reply With Quote
Old 02-13-2011, 07:27 PM   #5
Eisendrath
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: USA, CT
Posts: 184
Liked 3 Times on 2 Posts

Default

The ½ full keg would have had more contact surface area and less distance to diffuse through to get to the botton of the keg. It should have carbed first,,,, if the headspace contained as high percent CO2 as the full keg. My guess is that it did not, and possibly by far. I think in these situations it is purge, purge, purge,,,,, and when you think you are done, purge again. CO2 is cheap. Replacing spoiled beer..... not so cheap.
Eisendrath is offline
 
Reply With Quote
Old 02-13-2011, 09:06 PM   #6
devriems
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Posts: 5
Default

it ended up taking a little over 4 weeks. I think the problem must have been that I didn't purge enough air out of the keg because the beer was a bit "funky" and I ended up dumping it.


devriems is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
1st Time Kegging, Head but no Carbonation Rothman Bottling/Kegging 4 05-01-2010 09:58 AM
Carbonation level increasing over time? Pickngrin Bottling/Kegging 2 11-16-2008 02:21 PM
First time kegging carbonation questions Ridge Runner Bottling/Kegging 9 10-24-2008 12:58 AM
Effect of Keg Headspace on Carbonation ESPY Bottling/Kegging 2 09-20-2006 02:41 PM
Bottle carbonation time. Sosh Bottling/Kegging 5 04-29-2005 07:30 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS