Efficency

How to get most out of brewing with your Braumeister? Help others and share your tips/best practices.

Efficency

Unread postby Schmurf » Wed Dec 12, 2018 8:01 am

It seems like I'm getting lower effiency as I'm getting closer to the max amount of grain I could fit in my BM10. As I understand the max is about 2.8 kg and when I've been filling the malt pipe with 2.6+ kg I'm getting an effiency around 62%. With less malt (1.5 - 2.5kg) I'm seeing an effiency around 75%. Is this what to expect?

I also think 2.8 kg would be very difficult to fit in the malt pipe, 2.65 kg makes it pretty tight to fill it anymore...

Anyone have any advice about this?
Schmurf
 
Posts: 30
Joined: Thu Sep 13, 2018 7:30 am

Re: Efficency

Unread postby wobdee » Wed Dec 12, 2018 4:48 pm

There are many who have reported a little less efficiency with a full malt pipe. I see a small drop of about 3-5% with my BM20L short malt pipe with a fuller grain load and I'm thinking it may have something to do with circulation of that thicker mash. Next time I max out my malt pipe I'm going to try to mash longer, probably 2hrs or more and see if that makes a difference.
wobdee
 
Posts: 136
Joined: Fri Oct 16, 2015 1:11 am
Model: 20 litres

Re: Efficency

Unread postby Schmurf » Wed Dec 12, 2018 5:14 pm

wobdee wrote:There are many who have reported a little less efficiency with a full malt pipe. I see a small drop of about 3-5% with my BM20L short malt pipe with a fuller grain load and I'm thinking it may have something to do with circulation of that thicker mash. Next time I max out my malt pipe I'm going to try to mash longer, probably 2hrs or more and see if that makes a difference.

Yes that longer mash sounds like a good idea
Schmurf
 
Posts: 30
Joined: Thu Sep 13, 2018 7:30 am

Re: Efficency

Unread postby Nolan » Thu Dec 13, 2018 12:35 am

Well, I never really bothered about Efficiency Calculations. (Do I miss something ?)
Original Gravity (OG), I have been interested in.

Since I am using my own Malt-Mill, gravity readings (OG) have mostly been between
12º - 12.6º Plato (1048 - 1.051). Looks like, Crush-Size matters a lot.
https://www.speidels-braumeister.de/en/ ... ricks.html

Using a 10 litre Braumeister, I have finally settled with 2.4 - 2.5 kg of grains.
Average Mash-Time is about 80 minutes (40/30/10) (62ºC/72ºC/78ºC).

Doing a little slow Sparge with about 1 litre of hot water (75ºC),
I leave the Malt-Pipe on the Braumeister for about 15 minutes to settle. OG has gone up a little.
User avatar
Nolan
 
Posts: 14
Joined: Fri May 25, 2018 4:20 am
Location: New Zealand
Model: 10 litres (2015)

Re: Efficency

Unread postby mashy » Fri Dec 14, 2018 7:54 am

I have to agree with you there. It is a commercial consideration that I understand, but IMO a few percentile points do not seem relevant.
User avatar
mashy
 
Posts: 2650
Joined: Sat Aug 29, 2015 12:43 pm
Location: Mercia
Model: 20 litres

Re: Efficency

Unread postby IPA » Fri Dec 14, 2018 8:32 am

Efficiency matters when you are approaching maximum capacity of the malt pipe.That is to say with low efficiency you might not be able to fit enough grist in the tube.In most recipes by Graham Wheeler I use the quantities for a 23 litre brewlength to brew 25 litres. I usually acheive 83% efficiency with a 1.2mm crush. With my 20 litre BM I sparge with 5 litres at 78°C with the 50 litre BM 10 litres. So pro rata for a 10 litre BM it would be 2.5 litres. Leave the top filters in place when sparging.
IPA
 
Posts: 203
Joined: Tue Feb 25, 2014 8:16 am
Location: France
Model: 50 litres

Re: Efficency

Unread postby Schmurf » Fri Dec 14, 2018 9:41 am

Thanks for the replies guys. Coming from "standard" BIAB brewing I understand the thinking of efficency isn't THAT important; just add more grist to get to your wanted OG. But since that's not possible in BM10 it matters a bit more, if one want a bit higher OG beer and 10 litre of final product...

In my last brew I expected to fill the malt pipe with about 2.7 kg, but didn't add the last 100g, or so, since the pipe was pretty packed and it looked to me as I couldn't add anymore. I sparge with 4 litre to reach my boil volume of 14 litre because I wanted 11 litre in my fermentor. Expected OG was 1.060, when I guessed my mash effiency should be 73% (average on my last brews with less grist in pipe). Instead OG came in at 1.049, quite disappointing.
Schmurf
 
Posts: 30
Joined: Thu Sep 13, 2018 7:30 am

Re: Efficency

Unread postby Schmurf » Fri Dec 14, 2018 9:48 am

Btw, the speidel recommendation of crush size 1.6 mm, is that for best effiency or for clearest wort or anything else?
Schmurf
 
Posts: 30
Joined: Thu Sep 13, 2018 7:30 am

Re: Efficency

Unread postby Onthebrew » Fri Dec 14, 2018 11:28 am

The 1.6mm helps with circulation, i know that much.
Onthebrew
 
Posts: 451
Joined: Thu Aug 25, 2016 1:02 am
Location: Belfast
Model: 20 litres

Re: Efficency

Unread postby wobdee » Fri Dec 14, 2018 6:34 pm

Be careful with different crush suggestions. The crush can vary greatly depending on what mill is used, roller size, malt and other variables. After playing around with my cheap 2 roller mill (Cereal Killer) I found my best efficiency was a setting of .9mm. Higher than that and my efficiency goes down.
wobdee
 
Posts: 136
Joined: Fri Oct 16, 2015 1:11 am
Model: 20 litres


Return to General / Tips and Tricks

Who is online

Users browsing this forum: No registered users and 3 guests