Losing wort in boil - Home Brew Forums
Home Brew Forums > Home Brewing Beer > General Techniques > Losing wort in boil

Reply
 
Thread Tools
Old 03-23-2010, 01:01 AM   #1
smarek82
Recipes 
 
Apr 2009
Hazleton, PA
Posts: 212
Liked 1 Times on 1 Posts



Just did an APA this past weekend and ended up boiling 6.5 gal down to 4.5 in 60 min (I have a 7 gal kettle). I have had problems with this in the past and just said screw it. It really does not seem like I am boiling too vigorously...it is just barely rolling. Any suggestions?

Is there anything that happens to hop bitterness if I top it off to 5 gallons?

Thanks,

SM


__________________
Keg 1: Coal Miner's Daugter Porter
Keg 2: Red October
Keg 3: Hopsolutely

Bottled: 1 Vienna Lagers; Erins Irish Red; Pils, Christmas Doppel, Addy's Amber Ale(competition brew), Mayden Voyage Blonde Ale

Primary:
Secondary:
Future: Something Belgian, ESB

 
Reply With Quote
Old 03-23-2010, 01:13 AM   #2
Ohio-Ed
HBT_LIFETIMESUPPORTER.png
 
Ohio-Ed's Avatar
Recipes 
 
Nov 2008
Posts: 2,067
Liked 20 Times on 19 Posts


Two things will reduce your ending volume. Boil off, which you are probably accounting for and expansion/contraction which you may not be accounting for. Depending on the temperature when you measure your 6.5 gallon starting volume you may loose significant volume when cooled.



 
Reply With Quote
Old 03-23-2010, 11:18 AM   #3
smarek82
Recipes 
 
Apr 2009
Hazleton, PA
Posts: 212
Liked 1 Times on 1 Posts


Interesting. Basically what I am doing is hitting the flame on after I collect approx 4 gal....just to speed things up. Am I to believe that this is expanding the wort and when I think I'm at 6.5 I stop my runoff, I'm actually much less???
__________________
Keg 1: Coal Miner's Daugter Porter
Keg 2: Red October
Keg 3: Hopsolutely

Bottled: 1 Vienna Lagers; Erins Irish Red; Pils, Christmas Doppel, Addy's Amber Ale(competition brew), Mayden Voyage Blonde Ale

Primary:
Secondary:
Future: Something Belgian, ESB

 
Reply With Quote
Old 03-23-2010, 11:30 AM   #4
SwampassJ
Recipes 
 
Mar 2010
Coral Springs, FL
Posts: 2,163
Liked 37 Times on 34 Posts


I had the same problem with my new burner but had other issues because of wind so I had to keep it on high the entire boil. I Started damn near the top of the kettle and ended up with maybe 5 and a half gallons before I had to stop because of the hops/cold/hot break sludge. Probably lost half a gallon to that.

 
Reply With Quote
Old 03-23-2010, 12:12 PM   #5
Ohio-Ed
HBT_LIFETIMESUPPORTER.png
 
Ohio-Ed's Avatar
Recipes 
 
Nov 2008
Posts: 2,067
Liked 20 Times on 19 Posts


Quote:
Originally Posted by smarek82 View Post
Interesting. Basically what I am doing is hitting the flame on after I collect approx 4 gal....just to speed things up. Am I to believe that this is expanding the wort and when I think I'm at 6.5 I stop my runoff, I'm actually much less???
Your wort will "shrink".

This is the same principal that makes thermometers work...

I think the kinda universally accepted number is 4% if you are going from boiling to 68f.

Depending on how hot it is when you measure your original volume, you should count on loosing a quart or so to contraction.

Most of your loss will come from evaporation and the rest would be dead space in your kettle (the amount left behind if you use a siphon tube), any left is hoses, chillers, etc.

Evaporation will vary with temperature, humidity, wind, etc... but for the most part, these losses are fairly constant. You should be able to account for it in future brews once you go through a couple brews and "calibrate" your losses.

 
Reply With Quote
Old 03-23-2010, 04:14 PM   #6
smarek82
Recipes 
 
Apr 2009
Hazleton, PA
Posts: 212
Liked 1 Times on 1 Posts


I'm following now. Basically I'm screwed because I only have a 7 gal kettle and honestly if i filled it up any more, it's going over.

Dead space isn't really an issue. I just pour my wort into primary through a strainer.

If there was only a way to control evaporation
__________________
Keg 1: Coal Miner's Daugter Porter
Keg 2: Red October
Keg 3: Hopsolutely

Bottled: 1 Vienna Lagers; Erins Irish Red; Pils, Christmas Doppel, Addy's Amber Ale(competition brew), Mayden Voyage Blonde Ale

Primary:
Secondary:
Future: Something Belgian, ESB

 
Reply With Quote
Old 03-23-2010, 04:31 PM   #7
Ohio-Ed
HBT_LIFETIMESUPPORTER.png
 
Ohio-Ed's Avatar
Recipes 
 
Nov 2008
Posts: 2,067
Liked 20 Times on 19 Posts


Quote:
Originally Posted by smarek82 View Post
I'm following now. Basically I'm screwed because I only have a 7 gal kettle and honestly if i filled it up any more, it's going over.

Dead space isn't really an issue. I just pour my wort into primary through a strainer.

If there was only a way to control evaporation
There is a way, but you don't want it (Don't cover the kettle during the boil).

There is another option...You can add water during the boil to replace what's evaporating.

Most folks that do partials top off post chill thus adding un-sanitized water to their cooled wort (some boil their top-off water).

If through, experimentation, you know you are going to be 1/2 gallon short at the end of your boil, just add it prior to the last 15 minutes. If you dump 1/2 gallon in at one time, it will kill your boil, so I would do it gradually. Maybe even use it in the "Boil Over Fight", just add a little extra.

 
Reply With Quote
Old 03-23-2010, 04:41 PM   #8
Walker
I use secondaries. :p
HBT_LIFETIMESUPPORTER.png
 
Walker's Avatar
Recipes 
 
Sep 2005
Cary, NC
Posts: 10,987
Liked 101 Times on 89 Posts


Quote:
Originally Posted by smarek82 View Post
Is there anything that happens to hop bitterness if I top it off to 5 gallons?
Getting back to one of the questions that has not yet been answered.

Diluting your wort with water dilutes everything about it (color, gravity, hop bitterness/flavor/aroma).

Since you ended up with less wort than you expected to have, this means that all of these things above are most like higher than you intended. Diluting with water will bring them all back to where you wanted them to be.
__________________
Ground Fault Brewing Co.

Bopper Likes This 
Reply With Quote
Old 03-23-2010, 04:43 PM   #9
smarek82
Recipes 
 
Apr 2009
Hazleton, PA
Posts: 212
Liked 1 Times on 1 Posts


Great point Ed...I do remember from that first and only extract batch I did, I ended up topping off with bottled spring water(presumably sanitized).

Will my IBUs be altered because of adding the water?

I would think NO because by having a higher OG than was anticipated actually decreases IBUs from what I orininally intended.

Sorry for the questions and you have been a huge help, but what do you suppose would happen if I were to add the extra 1/2 gallon of sanitized water to the secondary after fermentation????
__________________
Keg 1: Coal Miner's Daugter Porter
Keg 2: Red October
Keg 3: Hopsolutely

Bottled: 1 Vienna Lagers; Erins Irish Red; Pils, Christmas Doppel, Addy's Amber Ale(competition brew), Mayden Voyage Blonde Ale

Primary:
Secondary:
Future: Something Belgian, ESB

 
Reply With Quote
Old 03-23-2010, 04:45 PM   #10
GilaMinumBeer
HBT_LIFETIMESUPPORTER.png
 
GilaMinumBeer's Avatar
Recipes 
 
Jan 2008
Posts: 58,145
Liked 7314 Times on 6025 Posts


Quote:
Originally Posted by Walker View Post
Getting back to one of the questions that has not yet been answered.

Diluting your wort with water dilutes everything about it (color, gravity, hop bitterness/flavor/aroma).

Since you ended up with less wort than you expected to have, this means that all of these things above are most like higher than you intended. Diluting with water will bring them all back to where you wanted them to be.
Ding Ding Ding. We have a wiener.

If you dilute the concentrated wort back to the target gravity, you will dilute all of the beers consituents to the target levels. It similar in pricipal to pre-hopped extracts.

Dilution calulators can help crunch out the mystery.



 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Losing Efficiency Somewhere Between Lautering and the Boil... RLinNH General Techniques 25 11-08-2011 03:57 PM
If I can boil water Can I boil wort ggoodman Equipment/Sanitation 11 03-16-2010 07:33 PM
Losing too much water during boil Dmiller1223 Beginners Beer Brewing Forum 3 01-19-2010 01:39 AM
Calculating wort expansion along with pre and post boil boil volumes greggor General Techniques 4 10-23-2009 12:01 PM
Remember When I was Complaining about Losing Eff. Between the Boil and the Sparge? RLinNH All Grain & Partial Mash Brewing 18 07-05-2008 01:22 PM


Forum Jump