Author Topic: Manometer  (Read 4374 times)

Offline Joe T

  • Assistant Brewer
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Re: Manometer
« Reply #75 on: January 29, 2019, 02:15:23 AM »
Here’s my undisturbed grain bed after a brew day. With this batch I obtained 91% mash efficiency (2 points higher OG than planned) and 72% brew house efficiency (both calculated by BeerSmith). I plan 70% BH but this additional 2% is within my brewery personal tolerance.

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Looks good. No flour at all. And that's decent efficiency.
I usually get around 65-67% brew house efficiency, per Brewer's Friend. That's usually close to 100% conversion efficiency, half gallon loss MLT dead space, half gallon or more trub loss in kettle and break separation, half gallon loss post fermentation. 
I'm all set for an early morning start on a snow day brew day tomorrow. I'll post my numbers and observations.

Offline Robert

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Re: Manometer
« Reply #76 on: January 29, 2019, 02:19:40 AM »
This article seems to explain BS calculations:

As long as I can reliably estimate OG when developing a recipe then hit the estimate within 1 or 2 points plus or minus on an actual brew day is good for me.  I probably leave more wort in the kettle than others in an effort to reduce trub in the fermenter at the detriment of BH efficiency. I know I could simply dump the kettle contents into the fermenter to increase Brewhouse efficiency but I prefer not to.

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Thanks for the link.  So many people use BS, it will be helpful for me to understand what it means when they quote its calculations.  (But he could've just used standard terms....)

I also mainly care about predictability, and the biggest inefficiency in my system is also planned losses in the interest of trub reduction.

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Rob Stein
Akron, Ohio

I'd rather have questions I can't answer than answers I can't question.