Carbonation Calculator

[BlackDuck]

Does anybody know of a carbonation calculator that works backwards? In other words, you enter the temp, batch size, priming sugar amount and it will give you the volumes of CO2. It would be interesting to see how much the volumes of CO2 changes as you change the amount of sugar changes.

[Beer-lord]

I'm not sure but will this one work for you?
http://www.northernbrewer.com/priming-sugar-calculator/

[BlackDuck]

Thanks...but thats not what I'm after. I'm looking for one that will figure the volumes instead of the amount of sugar to use.

[Beer-lord]

Sorry, I can't seem to find any after a google/bing search. I'm not a math wizard so I have no idea how to make one. I would think that someone, somewhere would have created one.

[BlackDuck]

I couldn't fine one after a google search either. Thanks for trying.

[Inkleg]

Sorry, I can't seem to find any after a google/bing search. I'm not a math wizard so I have no idea how to make one. I would think that someone, somewhere would have created one.

Some moderator you are, thought you were here to help.

[Beer-lord]

I'll help you and him drink your beer. See, I'm a pretty good moderator.

[Inkleg]

Touché

[Crazy Climber]

Haven't seen one that works that way, but couldn't you just take an ordinary calculator, like Screwy Brewer's, and adjust the volumes until you see the amount of sugar that you want? It'd be a slight bit cumbersome, but would get you the result you're looking for (I think).

I'm not at my home PC at the moment, but BeerSmith has a carbonation tool, too. I think it's similar to most, in that you enter the CO2 volumes and get a sugar amount, but maybe it's smart enough to calculate the missing field if you fill in the other field?

That's all I got.

[BlackDuck]

Thanks Crazy...I ended up doing what you suggested, it is cumbersome, but the end results are the same. The one in BeerSmith works like just the rest. I appreciate the help.

[StatsandBrew]

BlackDuck:

I know I am quite late to this party but I do have an answer for your question. You can use the priming sugar nomograph from Palmer’s “How to Brew” to solve your problem.

Let’s say for an example, that you have a 2.5 gallon batch at 70° F and you are priming with 3 ounces of cane sugar. First off, the nomograph is constructed for a 5 gallon batch so you would have to scale your sugar – 2 ounces in 2.5 gallons is the same as 4 ounces in 5 gallons. So put a dot on the rightmost scale (Cane Sugar) at 4 oz. Next put a dot on 70° F on the leftmost scale. Now draw a line connecting the two dots and read your volumes of CO2 where your drawn line intersects the Volumes of CO2 at about 2.6. See my sketch below for this example.



Palmer’s nomograph is here…

http://www.howtobrew.com/section1/chapter11-4.html

You can solve any version of priming problem with this nomograph. Whenever you know the value of three of the four variables (temperature, volumes of CO2, cane or corn sugar amount and batch size) you can solve for the 4th.

Sadly, constructing nomographs of this type is a dying art. In the days before everybody had calculators and computers in every pocket these were powerful methods for doing the math. (Yes, I am old enough to remember those days. I still even have some slide rules.)

[BlackDuck]

That's great. I see exactly how it works now. I appreciate you posting this for me. That works perfectly.