How to use this graph:
This graph is used to predict the gallons per minute (gpm) of wort you'll be able to chill from boiling down to 68oF (ideal fermentation start temp) using water from your garden hose as the cooling media.
1) Measure the cooling water flow rate in your brewery using a bucket of known volume and a stop-watch (gal/min). Then measure the cooling water temperature using an accurate thermometer.
2) Choose either the blue (5.0 gpm), cyan (3.0 gpm), or green (2.0 gpm) line that best matches your cooling water flow rate. If your flow lies between these lines, it is acceptable to interpolate between them.
3) Go to the point on the Y axis labeled "Cooling Water Temp (F)" to your cooling water temperature measured in step (1).
4) Draw a horizontal line to intersect the cooling water flow rate line you selected previously (Blue, Cyan or Green) in step (2)
5) Draw a vertical line at the intersection point down to the X axis labeled "Wort Flow (gpm) and read the wort chill flow rate you'll get at your brewery!
Example: If you have 58F cooling water and 5 GPM of flow, draw a horizontal line (see dark line in graph above) at 58F over to the blue line. Draw a vertical line (see dark line in graph above) from the intersection point down to the X-axis and read 2.0 GPM.
Click the link below to download a PDF of the current Therminator™ product manual.
Therminator Owners Manual-V8
Let's face it: If you've got ice-cold cooling water and high flow rates, it's a short punt to design a cooler to get the job done. But the reality of brewing is that fall, spring and summer bring higher groundwater temperatures that causes a struggle to cool wort to acceptable levels. For ales, if you can't chill to 68°F, your fermentations will produce higher levels of esters, fusels, and other compounds that you may not want in your beer (except for those esoteric Belgians!). For lagers, the effect is even more pronounced.
At Blichmann Engineering, we've leveraged 20 years of experience designing cooling systems and coupled it with 17 years of homebrewing experience to develop the Therminator™. The result is a chiller that works well all year long, providing not only raw cooling horsepower but the features brewers demand:
We've tested and analyzed the competition at our facility using precision thermometers, flow meters, and a cooling water-blending module for precise control. The results? The Therminator™ remains the best overall value as the king of coolers!
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