When you are evaluating aeration systems for your water, its important that you are aware of the fact that many of the standards and stats that a manufacturer promotes does not necessarily have any relevance on performance.
A perfect example of this is “CFM”, A common performance measurement that aeration manufacturers like to promote (known as maximum cubic feet per minute of air).
CFM is a bench tested measurement that means very little in the windmill aeration industry. When your windmill aeration system is installed out in the field by your pond it is totally reliant on wind to produce oxygen for your water, hence, giving the consumer a maximum CFM rating is not relevant at all to performance. In fact its almost useless, the higher the winds the more CFM of air the lower the winds the lower the CFM. As a result, Koenders Windmills commissioned a study to help consumers better understand this measurement and in the process created a new indicator for consumers to evaluate and choose a windmill aeration system.
It computes this measurement for windy, moderate and low wind scenarios so that consumers have an accurate assessment of the performance of the various windmill aeration systems given their location. At an average height of 15 -20 FT these windmill aeration systems “need to work in low winds”.
Below is a video that was provided to us showing a Koenders Windmill Aeration System operating in a low 5 MPH wind speed at a Fish Farm in Turkey. Further illustrating the tremendous airflow that these Koenders Windmills generate in lows winds.
The windmill is generating the bottom up oxygen bubbles that you see coming up in two areas of the pond. In the beside it is a surface bubbler that moves water, resulting in low oxygen transfer rates and high energy costs because its pushing water instead of air. A wonderful video to show Koenders Windmill performance.
For more information visit www.koenderswindmills.com