Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Calculating starting water volume for BIAB
Reply
 
LinkBack Thread Tools
Old 02-10-2012, 01:22 AM   #1
Pixalated
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Rockville, MD
Posts: 218
Liked 2 Times on 2 Posts
Likes Given: 13

Default Calculating starting water volume for BIAB

I got a 10 gallon brew pot, and built a 2,000W heatstick. I filled it with 6 gallons of water today, set it on my electric stove and plugged in the heatstick. When the temperature reached about 200F, I realized that I never turned on the stove burner. I was hoping it would speed up my boil.

When the water boiled, I let it go for 30 minutes. I chilled (to test out my new chiller) and saw that I lost 1 gallon of water. That seems like a lot.

I am planning to brew in a bag. Does this mean that for a 5 gallon batch I'd need to start with 7 gallons on water + whatever water my grains will absorb?

__________________
Pixalated is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 01:35 AM   #2
zacster
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2008
Location: Brooklyn, NY
Posts: 1,016
Liked 22 Times on 21 Posts

Default

There are calculators out there that will tell you how much you'll need based on a number of factors, such as grain quantity, boil loss rate, pot loss, and a few others. I used BeerSmith for my first BIAB a few weeks ago and felt like I had all the info I needed to make beer start to finish based on my chosen method, and a lot of others as well. I think it costs $27, but check their site. You can download a 21 day free trial too. The software seems daunting at first, but it really is easy once you get the hang of it with your first brew. It takes all the guesswork out.

__________________
zacster is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 01:46 AM   #3
Pixalated
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Rockville, MD
Posts: 218
Liked 2 Times on 2 Posts
Likes Given: 13

Default

I bought it a while ago, just because everyone who's mentioned it, raved about it.
I can't figure out how to account for loss of water in the grain.

__________________
Pixalated is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 02:05 AM   #4
Seven
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Pittsburgh, PA
Posts: 1,494
Liked 131 Times on 66 Posts
Likes Given: 95

Default

Here's a calculator that should give you a pretty good idea.

http://beerreviewdude.com/biab-calculator

__________________
Seven is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 12:16 PM   #5
Pixalated
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Rockville, MD
Posts: 218
Liked 2 Times on 2 Posts
Likes Given: 13

Default

Thanks!

__________________
Pixalated is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 12:48 PM   #6
watergod
Feedback Score: 0 reviews
Recipes 
 
Join Date: Dec 2011
Posts: 60
Default

I started BIAB about three batches ago and I'm finding my grain absorption is about .08 gallons per pound. A 12 pound grain bill gets me about a 1 gallon loss too absorption. Pretty close to what beer smith will tell you.

__________________
watergod is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 01:14 PM   #7
Pixalated
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Rockville, MD
Posts: 218
Liked 2 Times on 2 Posts
Likes Given: 13

Default

Thank you for the tip! I will run my test again tonight with water to see how much will boil off.

__________________
Pixalated is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 03:06 PM   #8
TopherM
Vinz Clortho - the Keymaster of Gozer the Gozerian
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
TopherM's Avatar
Brew Setups
Recipes 
 
Join Date: Mar 2011
Location: St. Petersburg, FL
Posts: 3,860
Liked 420 Times on 333 Posts
Likes Given: 22

Default

Birdman Brewing has BeerSmith for $22.00. Cheapest out there. I'd honestly pay $100-150 for this program. It does pretty much all brewing calculations you'd ever need, including starting volumes, and has lots of customizations especially for BIAB:

http://www.birdmanbrewing.com/catego...wing-Software/

__________________

Primary #1 - Midnight Ryeder (Midnight Wheat and Rye)
Primary #2 - EMPTY!
Primary #3 - EMPTY!
Secondary #1 - Downtown Flanders Brown (brewed August 2012)
Keg #1 - Oktoberfest
Keg #2 - Chamomile Honey Wheat
Keg #3 - Pumpkin Ale
Bottled - NONE!

TopherM is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 03:12 PM   #9
MikeSteele
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2011
Location: Walnut Creek, CA
Posts: 58
Default

Quote:
Originally Posted by watergod View Post
I started BIAB about three batches ago and I'm finding my grain absorption is about .08 gallons per pound. A 12 pound grain bill gets me about a 1 gallon loss too absorption. Pretty close to what beer smith will tell you.
I did my first BIAB on Saturday and found the exact same number. I think BeerSmith estimated something like .07 so it was about right.

I second the recommendations for BeerSmith. I used it for my BIAB and was only a tad off from the preset mash efficiency, boiloff rate, and grain absorption. I will just tweak those after each BIAB session to dial it in.
__________________
MikeSteele is offline
 
Reply With Quote Quick reply to this message
Old 02-10-2012, 03:16 PM   #10
Pixalated
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2010
Location: Rockville, MD
Posts: 218
Liked 2 Times on 2 Posts
Likes Given: 13

Default

Where in Beer Smith do I see that option though? I see the option for boil off, but not for grain absorbtion

__________________
Pixalated is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
BIAB Water Volume Calculator jbrookeiv BIAB Brewing 41 01-26-2013 07:00 PM
First BIAB, water volume question GTaylor All Grain & Partial Mash Brewing 4 11-05-2011 01:41 AM
No-Sparge BIAB Water Volume NigeltheBold All Grain & Partial Mash Brewing 16 03-28-2011 12:43 AM
Calculating water volume Islandboy85 All Grain & Partial Mash Brewing 31 02-22-2011 05:28 PM
BIAB Question: Grain and Water Volume limulus All Grain & Partial Mash Brewing 16 10-15-2010 08:52 PM