36 Quart BIAB vessel...

Post #1 made 14 years ago
Im going to do my first BIAB this weekend and I am going crazy trying to figure out exactly how I want to do it...(trying to plan absolutely everything to minimize any mistakes). One of my many questions is probably the simplest though...I have a 36 Quart turkey fryer. How much water & grain can I fit in there at once? Can I get 5 or so Gal. of water and #10 of grain in there all at once?

Post #2 made 14 years ago
Hi DOTH (and welcome to BIAB!)
It's a bit of an open question and it would be ideal if you can supply the recipe you intend to brew, as well as the dimensions of the turkey fryer (diameter and height).

The short answer to you question is "yes", based on the following assumptions:
- Hypothetical Kettle Diameter & Height = 14.57 inches. Give you a kettle capacity of 10.51 Gals which is about 36 Quarts.
- Volume into fermentor = 5 Gal.
- Original gravity of brew = 1.054 which gives you a grain bill of around 11 pounds.

To give you an idea, on the above set-up you will need to start of with around 8.4 gal of water. Once you've heated it to mash temps and added the grains the kettle described above will be at 9.59 gal. It's close to the 10gal limit of the kettle.

Please provide us with a bit more info and somebody will be able to give you a definitive answer!

lambert
    • SVA Brewer With Over 100 Brews From Swaziland

Post #3 made 14 years ago
OK the height of the kettle is at 16 7/8" (thats to the very top...maybe round down to 15" for some space?) and the diameter is 12 1/4 ".
As for the recipe..

Domestic 2-row 9.75#
Munich 0.5#
Crystal 45L 0.75#
Chocolate Malt or Roasted Barley 0.12# (just a bit for color)

Northern Brewer 0.50oz @ 60min
Cascade 1.0oz @ 20min
Zythos 0.5oz @ 8min
Zythos 0.5oz @ 2min
Cascade 0.5oz @ 0min (steep)
Columbus 0.5oz @ 0min (steep)

This is just something I found to get used to BIAB. Any other advice would be greatly appreciated!

Post #4 made 14 years ago
Good Day DOTH, if you do use 11 pounds of grain, you will lose at least 2.2 quarts(11 times 0.2qt/pound) of water to the grains, so, you may need make-up water if you have a long boil. Just MHO.
Honest Officer, I swear to Drunk, I am Not God.
    • SVA Brewer With Over 100 Brews From United States of America

Post #5 made 14 years ago
Hi DOTW
Thanks for the info - it's missing some bits and I'm going to give a brief answer - work calls!
Please have a look at the attached sheet - I'll refer to it in the post.

1. You did not specify an OG for the recipe. I've read in your other post that you want to do an APA. The BJCP OG guidelines for an APA is 1.056 – 1.075. Based on the ingredients you've given I'm guessing that teh OG of your original recipe is between 1.056 and 1.058. I've set the OG for the recipe to 1.058 (Tab:Volumes etc, Cell: B11)
2. I've set the Diameter if your kettle to 12.25 (Tab:Volumes etc, Cell: B15)
3. Based on the info you have provided I've calculated your kettle capacity to be 34.3 quarts or 8.57 gals. (I'm assuming the kettle is straight sided!). If you look the value in Cell B26, Volumes etc tab you'll see that the mash volume for the brew will be 9.11gal. So, your kettle is JUST too small for the brew! Fear not, there are various ways around this!

Workarounds:
a) Reduce your brew length (Tab:Volumes etc, Cell: B5) to 4.3gal or lower. See how the value in B26 change? But I suspect that you might like beer and live by the brewers motto of "More is better". If so then have a look at option b.
b) The correct thing to do would be for you to search for Maxi BIAB on the forum and read up on it. It would help for your future brews! I'm going to give you a quick and dirty guide!
- Cell B25 tells you that you need 8.18 gal of water for this brew. Add this in your kettle and bring it up to strike temp (I assume mashing temps somewhere between 149 F and 153 F - strike temp in normally 2C (35.6F) higher than mash temp).
- Once you have reached mash temp remove 1.5gal of water from the kettle (store it in another pot/container).
- Mash in your grains - your mash volume should be around 7.6gal. You can now top the kettle up to the level that you feel comfortable with. I would suggest leaving at least an inch of headspace. Make sure that your mashing temp is still ok - adjust as needed.
- You will be left with some water - my guess is around 1 gal. You can add some of this to the kettle after you have pulled the bag and the remainder after 30 mins of boiling - basically as soon as you have enough space in the kettle. Yes, you can use this water to rince the bag and extract a bit more of the sugar but I don't think the hassle is worth it for your first brew!

Notes:
1. Please have a look at the adjusted grain requirements for your brew on the spreadsheet (Tab: Grain Bill, Cells: G7 to G10). These will change if you change numbers (OG, Brew lenght, etc) on the first tab.
2. You will need to do a bit of work on the Hop Bill tab!
- I've made some assumtions regarding the end of boil volume of the original recipe (assume it's 5 gal - Cell: F6).
- If the original recipe used flowers/leaf instead of pellets then Cell F8 needs to be 100.
- I've entered some ballpark AA% in column E for the hops - if you know the actual AA% of the original brew please overwrite!
- If you are using hops flowers/leaf then change cell N8 to 100%.
- Please enter the the AA of your hops in column L.
- The hops quantities for your brew is provided in column K.
- Just a general note - the BJCP style guidelines for an APA is 40 – 70 IBU's. The calculator uses a different forumla (Tinseth) to calculate IBU's so the 41.5 IBU's you see in Cell N20 is closer to 45 IBU's as per the BJCP guidelines.

Final comment - As a first BAIB brew I would suggest that you try to stay within the ballpark figures - but don't stress too much about the numbers. You will make beer and it will be good (barring an infection during fermentation!).

Enjoy and shout if you need more info.

lambert
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    • SVA Brewer With Over 100 Brews From Swaziland

Post #6 made 13 years ago
Thank you for all the help Lambert! I'm sure it wasn't a small feat plugging all that in for me. I really appreciate it and sometime after this weekend I will let you know how the brew went. Any tips on what to use to measure the amount of water/wort in the brew pot?

Post #7 made 13 years ago
No problems, the entering of the figures was quick (thanks to people like stux, yeasty, pp etc for the spreadsheet) - the post was the long bit!

Two ways to measure the water volume:
1. Use a steel ruler or mark a stainless steel or aluminium rod every inch/half inch. Make sure it's longer than the depth of the kettle. When you want to measure your water/wort insert the stick and measure the height of the fluid. Based on the calculator & formulas done by clever guys the following applies to your kettle (once again, I assume that your kettle is straight sided!):
- At 68F 1Gal = 1.96 inches (cell D41, Tab Volumes etc).
- At 149F 1Gal = 1.99 inches
- At 212F 1Gal = 2.04 inches
So, if you measure 10 inches then your volume at 68F will be (10 inches/1.96)=5.10galons.

The other, maybe easier, option is to measure the headspace. Basically measure the distance from the top of the kettle to the start of the water level. Your pot is 16 7/8 inches in height. If your headspace is 7 7/8 inches then it means that you have got 9 inches of liquid in the kettle. Same formula as above then applies (9/1.96=5.59 gal at 68F).

Remember, it's your first brew, don't get too hang up on the numbers, relax, have fun and enjoy the smells!
Please do provide feedback!

Cheers,
lambert
    • SVA Brewer With Over 100 Brews From Swaziland

Post #8 made 13 years ago
Well I have about 3.5-4 gallons (I think) of beer fermenting nicely right now. As for going smoothly yesterday...not so smooth lol. I used a 5 gal. paint strainer bag in the basket that fits in the turkey fryer. Well some of the grain actually floated over and around the bag and basket and settled into the wort and ended up being boiled. I scooped a bunch of it out but didn't get it all. It clogged my racking cane which made racking difficult. Also I didn't pay close enough attention to my wort chiller (gift from a friend), it had 2 male ends on it. I didn't have enough female ends to tie into for cold water supply. I ended up jamming to lengths together and holding it that way with my hands, getting soaking wet. Also (by the end of it all I was quite inebriated) I thought I pitched my yeast into wort that was too hot.
I did have fun, and it is fermenting very actively which makes me happy. I ended up with pre-boil SG 0f 1.042 and a post boil OG of 1.054. I did lose quite a bit to evaporation mind you.
Thanks again for all of the help...it really helped me get my arse in gear and do this brew. I am much more confident now and can't wait to do another!!

Cheers!!
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