thaefathan
Well-Known Member
- Joined
- Jun 10, 2015
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Hi, can someone please double check my math?
I'm planning to brew a couple lagers at 15psi, just to see how well it works, and I was curious how much money this would save me, by having the beer naturally carbed.
CO2= 44grams/ mol = 0.097 lbs/ mol
1mol= 22.47L (at STP)
5gal= 18.927L
5 gal Beer at 2.5volumes= 2.5 x 18.927L = 47.3175L
47.3175L x (1mol/ 22.47L)x (0.097lbs/ mol)= 0.204 lbs CO2 to get 5 gal beer up to 2.5 volumes.
It cost me $17 to fill up a 10lb tank. $17/ 10lbs= $1.70/lb -->$0.34 for 0.2lbs.
So if its ~$20 to adapt the keg to ferment under pressure, I'll only have to brew 59 batches to break even.
I'm planning to brew a couple lagers at 15psi, just to see how well it works, and I was curious how much money this would save me, by having the beer naturally carbed.
CO2= 44grams/ mol = 0.097 lbs/ mol
1mol= 22.47L (at STP)
5gal= 18.927L
5 gal Beer at 2.5volumes= 2.5 x 18.927L = 47.3175L
47.3175L x (1mol/ 22.47L)x (0.097lbs/ mol)= 0.204 lbs CO2 to get 5 gal beer up to 2.5 volumes.
It cost me $17 to fill up a 10lb tank. $17/ 10lbs= $1.70/lb -->$0.34 for 0.2lbs.
So if its ~$20 to adapt the keg to ferment under pressure, I'll only have to brew 59 batches to break even.
