对于竞博体育产品和应用，行业根据其漂移率定义漂移消除器产品的有效性。 这个评级通常以百分比的形式表示。 You may ask, “Percentage of what?”… Percentage of circulating water flow rate!

Let’s use this tower design criteria as an example so that we can work through the calculation together:

Entering Water Temp: 95°F
Exiting Water Temp: 85°F
Site Wetbulb Temp: 78°F
Circulating Flow Rate: 1,000 gpm

If this is a counterflow cooling tower where we plan to utilize the CF80MAx drift eliminator, we can look at the published drift rate for this product and see it is 0.0005%. Since we now know that this percentage is in relation to the circulating flow rate, we can calculate the volume of water exiting out of the tower in the form of drift droplets, or “drift loss,” as such:

漂移损耗（加仑/米）= 1000加仑/分钟×(0.0005/100) = 0.005加仑/分钟

以小时为单位表示：0.005加仑/分钟× 60分钟/小时= 0.3加仑/小时

If we substitute another product’s drift rating of 0.002%, we would get a drift loss of 1.2 gal/hr, or 4 TIMES GREATER drift loss.

Hopefully this provides a clear example and/or refresher on a drift eliminator’s drift rate. The next question is, “Where does a manufacturer get that drift rate number, and is that rate consistent as my fan rpm changes?” We’ll tackle that topic in a 单独的文章!