Boil off on 11 gal batches? - Page 2 - Home Brew Forums
Home Brew Forums > Home Brewing Beer > General Techniques > Boil off on 11 gal batches?

Reply
 
Thread Tools
Old 07-06-2009, 07:32 PM   #11
Malticulous
Recipes 
 
Aug 2008
St. George Utah
Posts: 4,143
Liked 72 Times on 57 Posts


I consistently boil off one gallon/hour regardless of starting volume.
__________________
Everything is better with a beer.

 
Reply With Quote
Old 07-06-2009, 09:20 PM   #12
Droot
Recipes 
 
Jun 2009
West By golly Shelby NY
Posts: 310
Liked 1 Times on 1 Posts


Boil off rate should be about the same. BOIL OVER rate may go up.....

David
__________________
Yellow beer (pale ale) in keg

Chocolate stout In keg

Front Porch Porter in keg

weat beer and fruit in the conical

IPA of some kind on Deck!


I get more out of it when I put more into it. :)

 
Reply With Quote
Old 07-06-2009, 09:32 PM   #13
hukdizzle
Recipes 
 
Aug 2007
Kirkland, Washington
Posts: 402
Liked 5 Times on 4 Posts


I will have 25% headspace in the kettle and have the option of using fermcap, boil over rate will be minimal at best

 
Reply With Quote
Old 07-06-2009, 09:42 PM   #14
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
 
AnOldUR's Avatar
Recipes 
 
Mar 2007
, New Jersey
Posts: 6,886
Liked 844 Times on 609 Posts


Quote:
Originally Posted by hukdizzle View Post
This is exactly what I am talking about. I am thinking that the boil off rate will be slightly lower due to the fact that the liquid will not boil as vigorously being larger. This is the same exact kettle and setup I use for 5.5 gal batches.
Not sure, but it sounds like you're missing the point that is being made here. The boil off rate in BeerSmith is useless. Boil off has to be measured in gallons per hour, not a percentage of the volume. If you boil off 1-1/2 gallon with a five gallon batch, you'll boil off 1-1/2 gallons with a ten gallon batch. That means that the percentage you use in BeerSmith will be about half. Adjust that percentage number until it gives you the same volume boiled off as you get with a five gallon batch.

This is assuming a constant intensity of boil and you'll have to apply more heat to the larger batch to achieve that. But from the sound of it you may be boiling a bit too hard as is. You're not just going full bore with your burner, are you?

 
Reply With Quote
Old 07-07-2009, 12:47 AM   #15
jkarp
Recipes 
 
Jun 2008
Elizabeth, CO
Posts: 2,109
Liked 44 Times on 34 Posts


The "boil off %" thing just needs to die. It's flat-out wrong, yet it keeps getting perpetuated in calculators like Beer Smith.

Every system is different - even with the same size kettle. Hell, even location (altitude) makes a big difference. Only way to accurately determine YOUR gal/hr boil off rate is to test it.

 
Reply With Quote
Old 07-07-2009, 03:00 AM   #16
hukdizzle
Recipes 
 
Aug 2007
Kirkland, Washington
Posts: 402
Liked 5 Times on 4 Posts


Quote:
Originally Posted by AnOldUR View Post
Not sure, but it sounds like you're missing the point that is being made here. The boil off rate in BeerSmith is useless. Boil off has to be measured in gallons per hour, not a percentage of the volume. If you boil off 1-1/2 gallon with a five gallon batch, you'll boil off 1-1/2 gallons with a ten gallon batch. That means that the percentage you use in BeerSmith will be about half. Adjust that percentage number until it gives you the same volume boiled off as you get with a five gallon batch.

This is assuming a constant intensity of boil and you'll have to apply more heat to the larger batch to achieve that. But from the sound of it you may be boiling a bit too hard as is. You're not just going full bore with your burner, are you?
Makes complete sense now, thanks for that I am hard headed haha.

I am running my boils all out which is more than likely a waste of propane but I did it to have a constant output of heat/propane.

 
Reply With Quote
Old 07-07-2009, 10:02 AM   #17
AnOldUR
fer-men-TAY-shuhn
HBT_LIFETIMESUPPORTER.png
 
AnOldUR's Avatar
Recipes 
 
Mar 2007
, New Jersey
Posts: 6,886
Liked 844 Times on 609 Posts


Quote:
Originally Posted by hukdizzle View Post
I am running my boils all out which is more than likely a waste of propane but I did it to have a constant output of heat/propane.
I'm a fan of a good rolling boil, but don't go crazy. I have a Bayou SQ14 and a 15 gallon pot. Even when boiling 10+ gallons, I will back off the heat once hot break is achieved.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
full 5 gal boil - recipe calls for 2.5 gal boil - hops ammounts? vthokie98 Beginners Beer Brewing Forum 1 12-10-2012 09:40 PM
Calculating wort expansion along with pre and post boil boil volumes greggor General Techniques 4 10-23-2009 12:01 PM
Question about water amount in full boil or partial boil neldred Beginners Beer Brewing Forum 6 10-17-2009 03:50 AM
Tips on doing split boil extract batches? viking999 Beginners Beer Brewing Forum 3 03-20-2009 10:57 PM
Pony Keggle for 6.5 gallon boil? Doing dual batches on same day. NikolausXX All Grain & Partial Mash Brewing 1 09-06-2008 04:10 AM


Forum Jump