Efficiency
Moderator: Brandon
- Big Monk
- Assistant Brewer
- Posts: 282
- Joined: Mon Jun 06, 2016 7:29 am
- Location: New York
Efficiency
What are some typical efficiencies for no sparge mashes that members here are experiencing?
“We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” Aristotle
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
-
- German Brewing
- Posts: 409
- Joined: Thu Oct 15, 2015 1:45 pm
Re: Efficiency
For conversion, I get about 36-37 gravity points per pound of grain per gallon of water.
Losses in my system are about 0.1 gallons per pound of grain for absorption, and 0.12 gallons of deadspace in my mash tun.
I target a final volume post boil of 4 gallons and a boiloff of 10%. So given a desired OG, I work backwards and solve a little system of two equations to figure out how much grain and strike water I need to use. Efficiency goes down with increasing gravity in my system.
Losses in my system are about 0.1 gallons per pound of grain for absorption, and 0.12 gallons of deadspace in my mash tun.
I target a final volume post boil of 4 gallons and a boiloff of 10%. So given a desired OG, I work backwards and solve a little system of two equations to figure out how much grain and strike water I need to use. Efficiency goes down with increasing gravity in my system.
Last edited by Techbrau on Sun Aug 14, 2016 12:04 pm, edited 2 times in total.
If you always do what you've always done, then you'll always get what you've always gotten.
- Big Monk
- Assistant Brewer
- Posts: 282
- Joined: Mon Jun 06, 2016 7:29 am
- Location: New York
Efficiency
The reason I ask is because I typically have Mash Efficiency as a user inputted variable in my spreadsheet.
I recently coded in the following equation to try it out:
Conversion η*0.93*(Pre-boil Volume/(Pre-boil Volume + Absorption))
I'm assuming that given the no sparge and the higher water to grist ratio I can assume >= 95% conversion efficiency.
I'm going to try it out. Seems that 1.036-1.091 wort would yield ~62-78% Mash η. This seems a bit high to me but I have to forget my typical homebrew programming and realize that high conversion η combined with good extraction from recirculation doesn't put this outside the realm of possibility.
Obviously I'm just pencil whipping here but just wanted to get some advice/practical experience from you guys.
I recently coded in the following equation to try it out:
Conversion η*0.93*(Pre-boil Volume/(Pre-boil Volume + Absorption))
I'm assuming that given the no sparge and the higher water to grist ratio I can assume >= 95% conversion efficiency.
I'm going to try it out. Seems that 1.036-1.091 wort would yield ~62-78% Mash η. This seems a bit high to me but I have to forget my typical homebrew programming and realize that high conversion η combined with good extraction from recirculation doesn't put this outside the realm of possibility.
Obviously I'm just pencil whipping here but just wanted to get some advice/practical experience from you guys.
“We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” Aristotle
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
-
- Braumeister
- Posts: 882
- Joined: Tue Oct 13, 2015 9:27 pm
Re: Efficiency
I get anywhere from 63-73% based of mash schedule and base malts( brewhouse). Always excellent conversion with the no sparge.(With decoction I saw as high as 108%)
-German Brewing Founder-
- Big Monk
- Assistant Brewer
- Posts: 282
- Joined: Mon Jun 06, 2016 7:29 am
- Location: New York
Re: Efficiency
“We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” Aristotle
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
- Brody
- Assistant Brewer
- Posts: 326
- Joined: Sat Nov 14, 2015 11:30 pm
- Location: Philadelphia, Pennsylvania
Re: Efficiency
Attached my efficiency calc from my last Helles
- Attachments
-
- Hell efficiency.pdf
- (19.9 KiB) Downloaded 393 times
- Big Monk
- Assistant Brewer
- Posts: 282
- Joined: Mon Jun 06, 2016 7:29 am
- Location: New York
Re: Efficiency
Thanks for that. It's nice to have another data point.
“We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” Aristotle
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
-
- Braumeister
- Posts: 882
- Joined: Tue Oct 13, 2015 9:27 pm
Re: Efficiency
-German Brewing Founder-
- Brody
- Assistant Brewer
- Posts: 326
- Joined: Sat Nov 14, 2015 11:30 pm
- Location: Philadelphia, Pennsylvania
- Big Monk
- Assistant Brewer
- Posts: 282
- Joined: Mon Jun 06, 2016 7:29 am
- Location: New York
Re: Efficiency
I don't planning on brewing anything bigger than a Doppelbock and Imperial Stout lager. I'm thinking 17-18 °P on those beers. Other than that it will be 13 °P or less.
“We are what we repeatedly do. Excellence, therefore, is not an act, but a habit.” Aristotle
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
"Messieurs, c’est les microbes qui auront le dernier mot." Louis Pasteur
Check us out at www.lowoxygenbrewing.com
Who is online
Users browsing this forum: No registered users and 17 guests