I'm new to the Thien baffle and I'm building my 2nd version to see if I can improve on my first one from the lesson's learned.
I saw that this thread showed using a single measurement of air velocity from a vane anemometer to somehow calculate CFM of the flow. I have a great deal of experience with measurements of air flows and such (so far none of the nuclear plants that have relied on my analysis have had an issue and many other systems as well). I don't see how this measurement method will produce anything close to accurate measurements. If you maintained the measurement in the same location while changing only other aspects far removed from this flow area then it may be effective in seeing a relative effect. But making changes at the inlet section where the measurement is made and using the vane anemometer to see the maximum air speed (I guess this is what is being done) doesn't equate to volumetric air flow.
I think the differences are due to the measurement method and this is why the results don't follow logic.
I saw that this thread showed using a single measurement of air velocity from a vane anemometer to somehow calculate CFM of the flow. I have a great deal of experience with measurements of air flows and such (so far none of the nuclear plants that have relied on my analysis have had an issue and many other systems as well). I don't see how this measurement method will produce anything close to accurate measurements. If you maintained the measurement in the same location while changing only other aspects far removed from this flow area then it may be effective in seeing a relative effect. But making changes at the inlet section where the measurement is made and using the vane anemometer to see the maximum air speed (I guess this is what is being done) doesn't equate to volumetric air flow.
I think the differences are due to the measurement method and this is why the results don't follow logic.