Volume of liquid and forced carbonation

[RosettaSt0ned]

When force carbonating beer, does the volume (as in, how much I have, not volumes of CO2) of the liquid matter in regard to the pressure used to force carbonate? Due to a boilover and about a gallon of trub/dry hop loss, I only got about 3-3.5 gallons into the keg. Set the pressure to 30PSI and was going to let it sit for a day or so, then purge and readjust to serving pressure for about a day.

Does it matter that less than a full batch in the keg with all that headspace, or will it carb up more or less like a 5 gallon batch with this force method? Not rolling/shaking or anything, just letting it sit in the fridge.

 

[zachattack]

No, it does not matter. Just make sure you purge well to get all the air out.

 

[RosettaSt0ned]

No, it does not matter. Just make sure you purge well to get all the air out.

Ok, awesome, thanks.

 

[day_trippr]

When force carbonating beer, does the volume (as in, how much I have, not volumes of CO2) of the liquid matter in regard to the pressure used to force carbonate? [...]

It's not the pressure that varies with volume, but assuming the same vessel with constant diameter, with lower volume the duration of carbonation time to achieve saturation will be shorter - regardless of the pressure used.

Does it matter that less than a full batch in the keg with all that headspace, or will it carb up more or less like a 5 gallon batch with this force method? Not rolling/shaking or anything, just letting it sit in the fridge.

If you give the head space a decent flush with CO2 it'll be like it's not even there. Head space doesn't affect carbonation time; volume, depth, exposed surface area and pressure do...

Cheers!

 

[RosettaSt0ned]

It's not the pressure that varies with volume, but assuming the same vessel with constant diameter, with lower volume the duration of carbonation time to achieve saturation will be shorter - regardless of the pressure used.



If you give the head space a decent flush with CO2 it'll be like it's not even there. Head space doesn't affect carbonation time; volume, depth, exposed surface area and pressure do...

Cheers!

So it'll be carbed sooner than I thought, great! Happy accidents. Thanks!