Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB Brewing > Method to calculate BIAB efficiency

Reply
 
LinkBack Thread Tools
Old 02-15-2014, 02:36 AM   #1
Safa
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2012
Location: Athens, GA
Posts: 414
Liked 27 Times on 19 Posts
Likes Given: 8

Default Method to calculate BIAB efficiency

I'm looking for a formula that I can use to calculate my brewhouse efficiency. I'm afraid I've been playing with this for a while now, but haven't figured out how to actually work this out.

My brewing method doesn't seem to fit well with software or online calculators. I do some weird stuff, so forgive me. Here's my brewday:

  • Mash with 6.5 gal
  • Lose about a 1 gal depending on grain bill and how energetically I squeeze the bag
  • Top up to 7 gal
  • Boil for 60, usually lose about 1 gal depending on weather
  • Lose some in kettle (trub)
  • Top up to 6 gal if required

Hope someone can help!
Cheers
__________________

A little irreverence is good for the soul

Safa is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2014, 02:38 AM   #2
C-Rider
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
C-Rider's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Wai, Hawaii
Posts: 2,508
Liked 122 Times on 106 Posts
Likes Given: 280

Default

Quote:
Originally Posted by Safa View Post
I'm looking for a formula that I can use to calculate my brewhouse efficiency. I'm afraid I've been playing with this for a while now, but haven't figured out how to actually work this out.

My brewing method doesn't seem to fit well with software or online calculators. I do some weird stuff, so forgive me. Here's my brewday:
  • Mash with 6.5 gal
  • Lose about a 1 gal depending on grain bill and how energetically I squeeze the bag
  • Top up to 7 gal
  • Boil for 60, usually lose about 1 gal depending on weather
  • Lose some in kettle (trub)
  • Top up to 6 gal if required

Hope someone can help!
Cheers
U mean this will not work for U?

http://www.brewersfriend.com/brewhouse-efficiency/
__________________

Kaiser Ridge Brewing
-------------------------
Bottled in the refer: Maui Wowie(RobustCoffeePorter)
Bottled in the refer: Malahine Ale (Am Pale)
Bottled in the refer: OldGlory (Am Stout)
Bottled in the refer: GermanImperialStout
Bottled in the refer: German IPA
Bottled in the refer: Düsseldorf Altbier

C-Rider is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2014, 03:48 AM   #3
haeffnkr
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: St Peters Mo, MISSOURI
Posts: 372
Liked 19 Times on 17 Posts
Likes Given: 3

Default

Hi,
Curious...What size pot do you have?

I use and only ever used this calculator and it is spot on.
http://tastybrew.com/calculators/recipe.html

You put in your recipe and start with a guess on your brewhouse efficiency... I would use 75%
It is key to start with the correct volume specified and finish up with the correct gallons to hit your numbers.
The great thing about this calculator is you can use it in reverse adjust your volumes and efficiency to so it will match you real efficiency, you can then use that data for you next brew.

Make sure you always grind the same, squeeze the same, etc.

I can usually hit the OG the calculator states.

thanks Kevin

__________________
haeffnkr is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2014, 04:29 AM   #4
Safa
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2012
Location: Athens, GA
Posts: 414
Liked 27 Times on 19 Posts
Likes Given: 8

Default

Thanks for the responses guys.

So I guess what I'm asking is, with all those water additions that I do, it doesn't change the efficiency calc at all?

I cant do full volume beginning to end, I only have a 7.5 gallon pot.

__________________

A little irreverence is good for the soul

Safa is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2014, 07:38 AM   #5
C-Rider
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
C-Rider's Avatar
Recipes 
 
Join Date: Feb 2011
Location: Wai, Hawaii
Posts: 2,508
Liked 122 Times on 106 Posts
Likes Given: 280

Default

brewhouse efficiency is mash only. Boil has nothing to do w/it.

__________________

Kaiser Ridge Brewing
-------------------------
Bottled in the refer: Maui Wowie(RobustCoffeePorter)
Bottled in the refer: Malahine Ale (Am Pale)
Bottled in the refer: OldGlory (Am Stout)
Bottled in the refer: GermanImperialStout
Bottled in the refer: German IPA
Bottled in the refer: Düsseldorf Altbier

C-Rider is offline
 
Reply With Quote Quick reply to this message
Old 02-15-2014, 07:21 PM   #6
haeffnkr
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: St Peters Mo, MISSOURI
Posts: 372
Liked 19 Times on 17 Posts
Likes Given: 3

Default

Quote:
Originally Posted by C-Rider View Post
brewhouse efficiency is mash only. Boil has nothing to do w/it.
While the above comment is true, the amount of water boiled off or added to the wort will change the OG number drastically.

In you case, When using the linked calculator use 7 gallons to start and end with 6 gallons.
With a repeatable process, grain crush, squeeze, boil rate, etc you should be able to hit your numbers spot on after a few tries.

I sort of do the same process the OP states when I mash with 12 gallons, the grain soaks up about 2 gallons and I sparge the bag with about 3 gallons added back to the kettle, then start the boil with 13 gallons and end up 11.5.... clear as mud ?
But again, my numbers are spot on to what tastybrew says when I use 13 gallons to start and 11.5 ending volume ... and my brewhouse effeciency is 78%

thanks Kevin
__________________
haeffnkr is offline
 
Reply With Quote Quick reply to this message
Old 02-16-2014, 05:17 PM   #7
bigdongsr94
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: Powell, Ohio
Posts: 188
Liked 9 Times on 9 Posts
Likes Given: 5

Default

I don't understand any of these details.. How much grain did you use and what volume of what gravity went into your fermenter. That is all that matters. My brew pal app tells me what OG I should end at with my app set to 70% and 5.5 gal. If I end up more or less volume or OG, I just adjust the app to tell me what real efficiency I received.


Sent from my iPhone using Home Brew

__________________
bigdongsr94 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
How to calculate efficiency Traktertire General Beer Discussion 5 07-21-2011 06:53 PM
Calculate Efficiency Double-R All Grain & Partial Mash Brewing 8 07-13-2011 04:24 PM
Suggestions wanted to help improve efficiency on my BIAB method! Naked_Eskimo All Grain & Partial Mash Brewing 18 10-22-2010 05:30 AM
can someone calculate my efficiency for me? TacoGuthrie Beginners Beer Brewing Forum 2 08-24-2009 06:38 AM
How do I calculate my efficiency? ggoodman All Grain & Partial Mash Brewing 4 05-19-2009 01:19 PM