Is it just me or is there an error in the ABV calculation when taking into account chiller/trub losses?
Example A (closer to my normal setup).
Set batch size to 5.5 gallons
Total Mash water is 9.76 gallons.
Set chiller/trub losses to .3
Fermenter losses set to .5 gallons (Was playing with this number and didn't mean to leave it high but doesn't matter for this example).
Bottling volume comes out to 5.0 gallons. ABV estimate from beer smith for the given recipe has an OG of 1.077.
Example B:
Set batch size to 5.8 gallons
Total Mash water is 9.76 gallons.
Set chiller/trub losses to 0.
Fermenter losses set to .5 gallons (Just the numbers I was playing with).
Bottling volume comes out to 5.3 gallons. ABV estimate from beer smith for the given recipe has an OG of 1.073.
End of the day, both examples use the SAME grain amount and SAME water amount. In Example A I declare that I lose volume POST boil in the kettle/chiller, in example B says it all makes it out as end product. How in the world does this change the ABV? Shouldn't the ABV be calculated on total wort produced? How does "losing" some of your wort to your equipment RAISE the ABV (or OG)? Both example are producing the exact same amount of wort post boil.
Example A (closer to my normal setup).
Set batch size to 5.5 gallons
Total Mash water is 9.76 gallons.
Set chiller/trub losses to .3
Fermenter losses set to .5 gallons (Was playing with this number and didn't mean to leave it high but doesn't matter for this example).
Bottling volume comes out to 5.0 gallons. ABV estimate from beer smith for the given recipe has an OG of 1.077.
Example B:
Set batch size to 5.8 gallons
Total Mash water is 9.76 gallons.
Set chiller/trub losses to 0.
Fermenter losses set to .5 gallons (Just the numbers I was playing with).
Bottling volume comes out to 5.3 gallons. ABV estimate from beer smith for the given recipe has an OG of 1.073.
End of the day, both examples use the SAME grain amount and SAME water amount. In Example A I declare that I lose volume POST boil in the kettle/chiller, in example B says it all makes it out as end product. How in the world does this change the ABV? Shouldn't the ABV be calculated on total wort produced? How does "losing" some of your wort to your equipment RAISE the ABV (or OG)? Both example are producing the exact same amount of wort post boil.