2nd BIAB results - Irish Red

BIAB #2 – Irish Red – overall went pretty good. Improvement over 1st BIAB but not there yet. Nice color and it tastes like it’s going to be pretty good – now quietly fermenting…

Attached is the BIABacus file – I did not hit the numbers, but like this site is teaching me- first focus on process and don’t put too much in all the numbers. With that said working to understand my results. Any input on the file is appreciated.

I did solve part of my #1 BIAB mistakes. My measuring bucket for the water was off. I caught the error by using the weight method of calculating Volume. Thanks PP on the advice to try using weight conversion (twas the duck's nuts).
I’m still ending up with more into the fermentor then planned.
TWN was 4.26G (16.11L), I started with 4.35G (16.452L). Error on what I thought the weight should be – caught myself rushing when first started - had other then 1.0 for specific gravity in the first column of “Volume of Liquid in a Vessel using Weight and SG.” (must still be a beginner thing). But once I got going the weight and SG conversion worked great. I also made sure to cool both samples prior to reading SG.

My GIB was 1.035 vs. expected 1.037- no complaints there. The boil looks to have less evaporation than expected – 1.21 G (4.6 L) but actual was 1.13 G (4.29 L). My evaporation rate seems to be about .1G or .38L less than expected via BIABacus. I am using a new stove with a "turbo boil" burner - not sure if that would have an effect?
So overall I end up with .2G (.76 L) or so more into fermentor… Is this difference enough to mess up the GAW?
Thoughts and suggestions are welcome.
B4M

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You're doing well B4me . Remember these batch sizes are small so all the measurements are much harder.

On this one, your kettle efficiency measurements are confirming each other in Section P and this validation of measurements always helps. Like the last brew, they are still not matching the estimates whereas I would actually like to, at these original gravities, to see you exceeding the estimated kettle efficiencies of the BIABacus. It's still early days but it might be worth having a look through this list to see if anything stands out.

Secondly, on this brew, you again ended up with a higher than estimated Volume into Fermentor. We can't tell yet (because not enough brews have been done) what the main culprits are here but one thing we do want is for you to end up, at the end of the boil, with the desired OG or greater. In other words, we want to see you with a stronger wort. To trigger this, I would change the evaporation rate to say 2.5 L/Hr in Section X. Lowering the evaporation estimate never can do you harm. At worst, you just end up diluting in the fermentor.

Let us know if anything in that list rings a bell.


PP

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