t's come up in conversation with a bunch of people recently, so I figured I'd just toss them up here. These are the settings I have as my CHAOS Equipment profile for beersmith. This is based on using the 10 gallon pot, that we only have one of left, it can easily be updated for the new 20 gallon pots as soon as we have them graduated and the boil off is known, boiled off does very with ambient temp and humidity so it is hard to calculate exactly all the time. Another thing to consider is that in mash settings your grain starting temp and whether or not you pre heat your mash tun. Always preheat the mash tun. In winter, depending on where you store your grain, your starting grain temp may need to be altered or you won't hit your mash temps correctly. Everyone's results may very but these have proven very accurate for me. my losses are calculated a little high, but I'd rather leave a little extra in the pot and have more clear wort go in the fermenter, and leave a little extra trub in the fermenter and actually rack 5 clear gallons out.
Brewhouse Efficiency 72%
Hop Utilization 100%
Mash Tun Volume 10 gal
Mash Tun Weight 9 lbs
Specific Heat .3
Deadspace .4 Gal
60 minute Boil
Top up 0
Boil Volume 6.71
Time 60
Boil off 1.2 gal/hr
90 Min. boil
top up 0
Boil Volume 7.31
Time 90
Boil off 1.2 gal/hr
Fermenter and losses
Loss to trub and chiller .5 gal (recently upped this from .3 I think I was losing to much to trub and ending up with less wort than I wanted.)
After all that look in the preferences on the tool bar, next to add-ons, and open that up. Take a look at the bitterness tab and make sure it's measuring the bitterness formula in Tinseth, as that is most accurate.
Perfect man, thank you for putting this up. Hitting my numbers and volumes has proven difficult for me at CHAOS - I'm sure this will help alot!
I think the boil off from the new kettles will be approximately 1.5 gal/hr. That's what I used with the 15 gallon pots and the new kettles are the same diameter.
I like this thread...I'm thinking that we dial in the setting for all the pots and post them in the Brew House for all members.
I thought I was crazy for the having my boil off at 1.25 gallons, but good to see that I was being conservative.
Boil off does vary considerably. Some folks really crank up the heat and get an even higher boil off rate. The boil would be jumping out of the pot in this case.
Alternately, if the boil at a low roll, just breaking the surface it will be under a gallon/hr.
Humidity also plays a part. In the winter the humidity is low and will increase the boil off rate. In the summer it is the opposite.
Its important to monitor you boiloff throughout and will be easier once the etching on the pots. I often have to adjust as I go.
Yeah, I typically do a very vigorous boil, I eased up on Saturday and had a bit lower boil off than normal, missing my target gravity by a little. It's all a work in progress...
I've had ending volume issues in the past. Thanks for taking the time to put this up, Joe!
No problem. Not guaranteeing it'll solve all your problems, but it should be a good baseline for you to fine tune to your own process.
I logged on to search out this exact information. Is it safe to say this is all still current? Or I guess better question do we all still agree?
EDIT* I'm guessing figures to loss to trub and chiller can be updated if anyone has those estimations.