Heater

Fig. 3-1 shows reflux occurring in a laboratory retort, about the simplest still imaginable. Reflux and Product Ratios

The Reflux Ratio is the ratio of the vapor returned to the still as reflux to the total amount of vapor produced. The reflux ratio is often expressed as a percentage: if the boiler produces 100 parts of vapor and 90 parts of this are condensed and returned, then the reflux ratio is 90%. Operating under 100% reflux, or at a reflux ratio of 100%, means that all the vapor is condensed and returned to the still.

The ratio of the amount withdrawn as product to the total amount of vapor is the product ratio, or "draw down" of the system. It is sometimes confused with reflux ratio. A simple guide to keeping these terms straight is "Product goes out, Reflux goes back".

Brew Your Own Beer

Brew Your Own Beer

Discover How To Become Your Own Brew Master, With Brew Your Own Beer. It takes more than a recipe to make a great beer. Just using the right ingredients doesn't mean your beer will taste like it was meant to. Most of the time it’s the way a beer is made and served that makes it either an exceptional beer or one that gets dumped into the nearest flower pot.

Get My Free Ebook


Post a comment