New Giveaway - Wort Monster Conical Fermenter!

Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > How do you determine efficiency?




Reply
 
LinkBack Thread Tools Display Modes
Old 03-25-2009, 11:58 AM   #1
Eves
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2008
Posts: 380
Liked 3 Times on 3 Posts
Likes Given: 1

Default How do you determine efficiency?

I'm going to be starting my first partial mash today or tomorrow and I just realized that I have no idea how to determine what efficiency I end up with. Is it just based on what ending OG you get vs the fermentables? Is this something best suited for using one of those applications like pro mash or whatever?



__________________
Eves is offline
 
Reply With Quote Quick reply to this message
Old 03-25-2009, 12:26 PM   #2
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 1 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Piscataway, NJ
Posts: 21,734
Liked 853 Times on 572 Posts
Likes Given: 26

Default

Efficiency of a partial mash is really based on the gravity and volume of the wort you derive from the grain. Don't wait until after you add malt extract to measure these things.



__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 03-25-2009, 02:08 PM   #3
Homercidal
Moderator
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Homercidal's Avatar
Recipes 
 
Join Date: Feb 2008
Location: Reed City, MI
Posts: 22,082
Liked 1658 Times on 1204 Posts
Likes Given: 941

Default

Measure your water at every step.
Measure your grain bill.
Take hydro samples after sparging.

You'll have to know the efficiency of the grains and add it up. This will tell you what the maximum amount of sugar you could possibly extract will be. Compare your hydro reading to the maximum potential and this determines your efficiency.

You could never extract maximum sugars and even if you got very close, your wort would likely be unsuitable for brewing due to tannins and stuff. But many get over 75% and some into 80s after tweaking their process.

__________________
Homercidal is online now
 
Reply With Quote Quick reply to this message
Old 03-25-2009, 03:47 PM   #4
hopsalot
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2007
Location: Corpus, Texas
Posts: 1,575
Liked 15 Times on 14 Posts
Likes Given: 55

Default

here is my calc for eff for one of my brews:


brew efficiency overview

--------------------------------------------------------------------------------


SMaTH Brewed 12-17-08 kegged 1-19-08

12# vienna
1 oz Centennial (8.00% AA 60 min)
2 oz Cascade (5-6?% AA 1 oz 30 min, 1 oz 5 min )

Mash 154*F, 4.5 gal, 1 hour
Sparge 180*F, 4 gal

Boil volume: 7-7.5 gal
Boil 1 hour
End volume: 5.5 gal

SG: 1.034
OG: 1.060
FG: 1.014

I calculate ABV: 6.03%

So here are my thoughts. The beer is great very clear, yeasty and citrusy. Has turned out to be a great people pleaser. All grain is as easy as you want it to be but I am interested in the actual efficiency of my system in order to get better data for online brew calculators.

12# Vienna
F. gravity 1.060

GU = (Grav-1)x1000
GU = 60 GU

GU of total gravity = 60 GU*5.5 gal = 330 total GU
12 # Vienna = 330 GU

total grav of wort = (SG-1)*1000 * boil volume
= 34 GU * 7 Gal (pre boil) = 238

Eff = total gravity of wort/total potential gravity of grains
Eff = 238/330 = 72%

__________________
In Illa Brettanomyces Nos Fides

http://bjsbrewery.blogspot.com/
hopsalot is offline
 
Reply With Quote Quick reply to this message
Old 03-25-2009, 03:57 PM   #5
Lil' Sparky
Cowboys EAC
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Lil' Sparky's Avatar
Recipes 
 
Join Date: Feb 2006
Location: Honolulu, HI
Posts: 4,013
Liked 44 Times on 31 Posts

Default

Easy - Beersmith.

__________________
Quote:
Originally Posted by duffman2 View Post
I dub this beer the Double Slutty Triple Nutty Bodacious Booty Brunette!
Lil' Sparky is offline
 
Reply With Quote Quick reply to this message
Old 03-25-2009, 04:07 PM   #6
Mike M
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2007
Location: , Delaware
Posts: 545
Liked 16 Times on 12 Posts
Likes Given: 37

Default

Some good information here: How to Brew - By John Palmer - Extract Efficiency and Typical Yield



__________________
Mike M is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
weight to determine SG? metaldwarf General Beer Discussion 19 11-20-2009 01:46 AM
Help to determine efficiency SSRider All Grain & Partial Mash Brewing 3 02-06-2009 05:45 AM
determine ABV when diluting jay415 General Techniques 5 07-16-2008 12:20 AM
How do you determine the AA%? mongrell Hops Growing 14 02-23-2008 04:05 AM
BeerSmith: how to determine mash efficiency for partial mashes Kaiser Equipment/Sanitation 3 12-26-2005 07:46 AM