ORIGINAL: mr_matt
How close are you to finishing your demo model?
If your model does not work will that convince you that your theory is wrong, or will it mean that you built your model wrong?
BTW, in your diagram, NHAP=0 (ambient). There is no increased pressure there.
If NHAP=0 it will not work but NHAPshould be higher than the internal low pressure. It is a pressure differentian between external and intenral pressure in the front of the fans.
I have all the components but so I have not sstarted it. I hope I will start it after Christmas.