Originally Posted by
Larry Frank
That is a very large impeller and it would be interesting to see a performance curve. It takes a lot of effort to get the data. I posted a couple of threads that showed how I did mine and used a hot wire anemometer with appropriate did positions across the duct. I did a lot of repeat measurements.
I just do not trust the fan type anemometer to get anywhere near accurate results. With the effort you put in to build your own system, I think it would be worthwhile to get accurate measurements.