GodfreyTempleton
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Does anybody know how much CO2 a five-gallon basic beer kit fermentation creates?
Does anybody know how much CO2 a five-gallon basic beer kit fermentation creates?
Thinking if one was to ferment in a controlled sealed fermenter, say a Brewtools, would there be enough co2 given off to purge a keg, King or otherwise of air, ready for an airless transfer to cut down on the costs of bottled co2?I went through a phase of collecting “fermentation gas” in mylar balloons. I let the first day’s worth of gas vent as it would contain a lot of air from the initial headspace in the bucket. The best I managed was 5 brewloons..
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..after that the gas production was so slow most of it probably leaked out of the bucket lid. So, now the complicated bit. One and a half brewloons worth of gas displaced a King Keg (filled to the brim, about 7 gallons or 35 litres roughly) of water. So 5 brewloons equals just short of 100 litres
Out of interest, what do you want to know for?
The answer to that is "yes"....but, as I said, best to wait at the beginning to allow the remaining air in the fermenter to be flushed out. Not sure of the keg flushing method you're planning to use. Some just connect the fermenter to a vented keg. As you can see from my post I opted to collect the gas in balloons, fill the sanitized keg with water then connect the balloon to the gas post and a siphon hose to the beer post to drain the water from the keg and replace it with gas. However, when I brew NEIPA I use CO2 cylinder instead of balloons.Thinking if one was to ferment in a controlled sealed fermenter, say a Brewtools, would there be enough co2 given off to purge a keg, King or otherwise of air, ready for an airless transfer to cut down on the costs of bottled co2?
It takes a lot of CO2 to purge a keg, and at high pressure.Thinking if one was to ferment in a controlled sealed fermenter, say a Brewtools, would there be enough co2 given off to purge a keg, King or otherwise of air, ready for an airless transfer to cut down on the costs of bottled co2?
This gentleman certainly does. Simply laid out.Does anybody know how much CO2 a five-gallon basic beer kit fermentation creates?
I did this once. The only way to be sure to fully purge a keg is to completely fill it with sanitised water. I fill with stars solution, brim it, replace the lid, apply a garden pump pressure weed killer thing to the liquid post and push stars through under pressure and open the purge valve to purge air out, then open up the gas post with a screwdriver tip to push out any air that might be trapped in the short length of tube. That is the only way you can be sure you have nothing but liquid in the keg with no air trapped in any nook or cranny. Could also do it with water with Sodium Metabisulpate to purge dissolved oxygen from the liquid if you really wanted to be sure.Thinking if one was to ferment in a controlled sealed fermenter, say a Brewtools, would there be enough co2 given off to purge a keg, King or otherwise of air, ready for an airless transfer to cut down on the costs of bottled co2?
I'm in the same boat. I pay £30 delivered for a CO2 tank every couple of years, and that's used to liquid purge, force carbonate and serve 25-30 kegs of beer. I wouldn't mind doing the liquid purge using fermentation CO2, but then I'd need to have the kegs already cleaned when I'm starting a fermentation, and I rarely do.Though CO2 is more expensive than it used to be in the grand scheme of things it's still cheap...at least where I get it from...maybe £30 - £35 every 9 months or so. I can live with that cost and as a slice of the pie chart of my overall brewing costs its pretty minor. Far more concerned about cost of hops and yeast, and electricity of course. Waters dirt cheap, malt is dirt cheap...CO2 is quite cheap.
I had a muse about this a while ago. These compressor pumps just take in ambient air from the side grills. If you wanted to use it to compress your CO2, you'd have to have the pump entirely inside whatever you collect CO2 in. Or set up some elaborate ducting to get the flow from your CO2 container into the vents on the compressor. Not a simple tasks.Another idea may to collect and compress your own fermenter gas using a simple pump and a corny as the pressure vessel.
https://www.ebay.co.uk/itm/284547454263
Have we just reinvented bottle/keg conditioning?Err why not just ferment some sugar, water, nutrient in the corny keg.
Build the pressure up to a level below the safety threshold of the keg
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