Utilization algorithms

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Utilization algorithms

Postby TCBrewguy » Mon Apr 24, 2006 3:18 pm

Forgive my ignorance, but what should I be using the utilization algorithms for? I noticed after messing around with them that they change the stats quite a bit. Furthermore, how do I know whose algorithms to use (i.e. Mosher's, Rager's, etc)?
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Postby notbob » Thu Apr 27, 2006 7:33 am

I would also like some education on this matter, since the different algorithms make such a change.

Where might one find out more on this subject? i assume that each one is tied to particular methods of brewing.....

I am noticing that my hop IBU's are different in BTP than in BT.

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Formulas

Postby jeff » Thu Apr 27, 2006 8:01 am

You may find this article helpful:

The HBD Palexperiment Results
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Re: Formulas

Postby notbob » Fri Apr 28, 2006 8:49 am

jeff wrote:You may find this article helpful:

The HBD Palexperiment Results


Hi Jeff,

I haven't had time to read the page you linked yet, but will try in a moment.

I noticed that switching from Tinseth's algorithms to Mosher's, my bittering units went from 72 to 51.

That's a huge difference. Do you think that's right? I still have to try and understand the different profiles, but this seemed to be a huge difference created just by the different profile.

Al
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Postby notbob » Fri Apr 28, 2006 9:02 am

Jeff,

Great article! I think I'll probably stick with the Mosher profile, as it's pretty much what I've been using before. It's definitely closer to what I would predict a given amount of hops would contribute to the IBU's. At least all the recipes I've created so far.

Thanks for the link, and keep up the great work!

Al
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Postby TCBrewguy » Fri Apr 28, 2006 10:02 am

After reading the article I understand the algorithms/utilization section a lot more too. I went with Mosher's for Boil Time and Gravity Correction, but with Daniel's Pellet Correction - Mosher's just seems too high to me. Plus, I use a hop bag and I figured I'd get slightly less utilization anyway.
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"BeerTools" algorithm

Postby erichonour » Wed Jun 07, 2006 2:34 pm

Do you plan to add the "BeerTools" utilization available in the online version to BTPro? I've always assumed this was a proprietary algorithm you all derived from your own experimentation. Which of the more "standard" algorithms (e.g. Tinseth, Mosher, etc.) does it match most closely, over the full range of bittering?

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Re: "BeerTools" algorithm

Postby jeff » Wed Jun 07, 2006 3:37 pm

erichonour wrote:Do you plan to add the "BeerTools" utilization available in the online version to BTPro? I've always assumed this was a proprietary algorithm you all derived from your own experimentation. Which of the more "standard" algorithms (e.g. Tinseth, Mosher, etc.) does it match most closely, over the full range of bittering?

EH


That one is my algorithm (Fowler) that I developed based not on experimental data but data from charts available at the time. I wanted a way to use values "in-between" the values available on the charts, so the algorithm uses mathematical interpolation methods.
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