Evaporation

enohcs · Aug 30, 2011

Can someone please confirm or deny the following?

Currently I boil in a 15.5 gal converted keg.
Pre boil I start with 10gal. I boil for 90 min. I finish the boil with 7.7gal for a total evaporation loss of 2.3gal in 90 min.

If I increase my pre-boil volume to 14gal, then boil for 90min, assuming everything else is the same, will I finish the boil at 11.7gal?

diS · Aug 30, 2011

Sure.
Evaporation depends on air humidity, wind and exposed surface. If you brew in same pot and all air factors are constant evaporation loss will be constant too.

cyberbackpacker · Aug 30, 2011

All else being equal (including the boil vessel remains the same) , and only the pre-boil volume changing, then yes you should yield ~11.7g after a 90 minute boil.

Boil-off rate is a constant, regardless of volume, all things being equal (again, including the boil vessel remains the same) .

speeddemon11L · Aug 30, 2011

cyberbackpacker said:
All else being equal, and only the pre-boil volume changing, then yes you should yield ~11.7g after a 90 minute boil.

Boil-off rate is a constant, regardless of volume, all things being equal.

had a thought, but nevermind. :drunk:

Evaporation

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Evaporation

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