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Messages - Pricelessbrewing

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166
Equipment and Software / Re: Promash Status
« on: November 30, 2015, 05:53:08 AM »
slight detour...

As a somewhat selfish/biased computery brewer/person, what has you tied to promash that other pieces of software don't do or don't do as well?

I'm working on an article that compares all the more popular pieces of software to get a running list of features and issues that people run into.

Like I said a page or two ago, I tried to use promash but it was too clunky and felt super out of date. The user interface was extremely annoying to me, and some default options (boil off rate for one, pet peeve) just didn't make sense at all with modern brewing knowledge.

I feel that something so out of date, and with how much progress has been made with modern techniques and information, that it cannot possibly be a superior product when compared to the more supported/updated options:
Beersmith, or the myriad of online alternatives like brewers friend, brewtoad, mine, or even homebrewhedonist.

ATM I use a rather eclectic list of software/spreadsheets/calculators.
Bru'n water for water chemistry/ph.
Mine for water volumes, temps, and efficiency estimations.*
Beersmith for recipe formulation/scaling of recipes for my small batches (usually do .75-2G now)
Brewunited for yeast starters (looking forward to the one being worked on by omega yeast labs!)

*working on recipe formulation and a modification of the Tinseth formula which will incorporate iso acid solubility (from someone's master thesis) and instantaneous wort gravity instead of average (idea I had and emailed Tinseth about, math seems to check out so far but still testing)

167
All Grain Brewing / Re: When is thin too thin?
« on: November 30, 2015, 05:38:45 AM »
 For comparing mash thickness, I think conversion efficiency should be discussed, as variables such as grain absorption, "losses" at mash tun or kettle should have no baring in the discussion.

 For me, I find conversion efficiency to be highest with a fine grind, and a traditionally thin mash. I usually mash in around 1.75-2 qt/lb. This ensures a high conversion efficiency (typically 97%+) while still leaving me water to achieve a high lauter efficiency (80-85%) which gives me a high, consistently predictable mash efficiency around 85+% depending on grain bill and brewhouse efficiency depending on grain bill and hop bill.

All efficiency numbers calculated using braukaisers definitions, and simulations ran using my calculator below.
http://pricelessbrewing.github.io/BiabCalc/

Any discussion of efficiency is relative without super informative posts, and not stating which efficiency is being mentioned isn't all that helpful in my experience.

168
To further derail... For the curious, do you know the equations (or have a link to them) for calculating boiling water additions for such a step mash?

Here's a good start, for you:
http://howtobrew.com/book/section-3/the-methods-of-mashing/calculations-for-boiling-water-additions

Thanks. I know I've seen these before.  :)

Unfortunately, I think something in the formula given might be lacking.
For sure, the specific heat & mass of your vessel are missing, but that's usually a small factor.
To me, there also seems to be a comparison portion of the formula missing.
I'll have to dig some more.
But, that information will get you extremely close.

There is a real nice thread over at HBT where a gentleman went though and derived the equation from its basis in thermodynamics and then compared it to Palmers simplification in HTB. If I can find it I'll post it. It may have the missing pieces your talking about.

Palmer simplified the equation for general use.

EDIT: found it - https://www.homebrewersassociation.org/forum/index.php?topic=24895.msg318648#msg318648

Awesome, thanks for the link. Will be reading this at work and seeing if my memory of my heat and thermo class will suffice :)

169
Equipment and Software / Re: BIAB. Please share ideas, pros/cons, methods.
« on: November 08, 2015, 01:54:16 AM »
Hey guys, new to the AHA forum but I'm pretty active on the BIAB section of HBT as well as r/homebrewing (u/pricelessbrew)

Anyways, there's no reason you can't batch sparge with BIAB as well. I often do something I call 'equal runnings biab', where the volume after removing the bag is equal to the sparged volume, and you can find a thread on homebrewtalk with that title as well where I show some of my findings using a batch sparge simulator modeled after Braukaisers batch sparge efficiency analysis.

I have a BIAB mash calculator that has a bunch of nice features on my blog over at Http://Pricelessbrewing.github.io/BiabCalc and a testing page at http://Pricelessbrewing.github.io/BiabCalc/TestingO if you'd like to look at the lauter efficiency model, I have an updated version that hasn't been published yet.
Can't get your links to work.

Thanks not sure what was going on there, the forum seems to have doubled up on the http:// part of the url, if you google priceless BIAB it'll come up otherwise, copy and paste that into your url. http://Pricelessbrewing.github.io/BiabCalc/TestingO


I've done no chill as well, and while it's sometimes convenient I'd rather take the 15 minutes or so to chill the wort, but I'm in the great lakes region so no lack of water around here.

There's no reason you can't use a BIAB bag in a cooler mash tun, it might have a slow drain though if you plan on draining it like a traditional mash tun with braid, but if you lift the grain bag it'll flow very quickly, then you can do your batch sparging as normal and lift again.

170
Equipment and Software / Re: Promash Status
« on: November 08, 2015, 01:51:37 AM »
I downloaded it awhile back, not a fan. Interface is clunky and boil off rate is a percentage of pre boil volume rather than a fixed rate. I stopped exploring at that point, percentage boil off doesn't make sense to me since it varies with equipment, not with batch size.


171
All Grain Brewing / Re: Mental Floss
« on: November 07, 2015, 10:41:33 PM »
Since it's slightly relevant, my mash volumes/temps calculator is here.

ATM the Post boil Sg is wrong, I tried to do it based on the pre boil weights of water, and sugar (common calculation) then substract the boil off rate as a 100% loss of weight of water, but that didn't quite work. I've since corrected the calculatior, but haven't uploaded the new version to the website.

http://pricelessbrewing.github.io/BiabCalc/TestingO

It assumes pre-heating your mash tun and will match a properly set up beersmith profile.

172
All Grain Brewing / Re: Mash specs for high gravity
« on: November 05, 2015, 06:25:27 PM »
I am really just wondering if I should target a "typical" 1.5-1.75 qt/# and a smallish sparge, or would I be better with closer to 1qt/# and a decent sparge.

Are you batch or fly sparging? With batch a really small sparge will seriously hurt efficiency since you can't rinse all the grain. If you're fly sparging it doesn't matter quite as much but efficiency will be highest for the thickest infusion ratio.

I'm running some numbers through my batch sparging calculator, and you'd have to have pretty bad conversion efficiency (<80%) to only hit 1.100 OG off of a 26 lb grist and 8.5 gal pre-boil. This is a 5-6 gal batch, right? Your lauter efficiency for a single batch sparge would be around 70%. Figuring out why you're seeing incomplete conversion would be the best place to start. Like Dave said, the most likely culprit is an incomplete crush.

Agreed. Also didn't know you had a little batch sparge calculator, I'll have to check my math against yours. PS: I emailed you a little bit ago about your refractometer correction tool. Awesome work!

173
All Grain Brewing / Re: Mash specs for high gravity
« on: November 05, 2015, 06:10:00 AM »
If you can provide some numbers on your system, boil off, batch size, any loses in mash tun or kettle, and typical grain absorption as well as your "average" mash efficiency, I should be able to ball park some numbers at you from a batch sparge/mashanalysis/partigyle spreadsheet I have that's based on brau kaisers mash efficiency analysis.

I usually aim for 1.75-2 qt/lb as I feel it gets the most consistently high conversion efficiency, then aim for as close to equal runnings batch sparge for maximum lauter efficiency.

174
Equipment and Software / Re: BIAB. Please share ideas, pros/cons, methods.
« on: November 04, 2015, 08:55:42 PM »
Hey guys, new to the AHA forum but I'm pretty active on the BIAB section of HBT as well as r/homebrewing (u/pricelessbrew)

Anyways, there's no reason you can't batch sparge with BIAB as well. I often do something I call 'equal runnings biab', where the volume after removing the bag is equal to the sparged volume, and you can find a thread on homebrewtalk with that title as well where I show some of my findings using a batch sparge simulator modeled after Braukaisers batch sparge efficiency analysis.

I have a BIAB mash calculator that has a bunch of nice features on my blog over at Http://Pricelessbrewing.github.io/BiabCalc and a testing page at Http://Pricelessbrewing.github.io/BiabCalc/TestingO if you'd like to look at the lauter efficiency model, I have an updated version that hasn't been published yet.

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