One more thing you can simulate with the spreadsheet is the drop in pressure you'd get if you were to seal your FV and then cold crash it without attaching a CO2 source and then waiting long enough for beer to start absorbing more than a trivial amount of CO2. Just set the temperature to your fermentation temperature and your manometer pressure to zero.
With 20% headspace cooling from 20°C to 0°C you'd end up with a whopping -0.44 bar of vacuum, more than enough to seriously damage your fermenter. A surprisingly small amount of CO2 has to transfer to the beer for that to happen (unless you brew in the 100bbl range, of course).
With 20% headspace cooling from 20°C to 0°C you'd end up with a whopping -0.44 bar of vacuum, more than enough to seriously damage your fermenter. A surprisingly small amount of CO2 has to transfer to the beer for that to happen (unless you brew in the 100bbl range, of course).