Hi guys.

I was running a few tests today and was just wondering what your speculations would be

Constants. Fan motor, pwr supply, air baffle, refrigerated space, ambient, test equiptment.

I start with a 20inch fan and matching cowl and measure Watts, Amps, M3/Hr and Rpm.

What will happen to these values if I increse firstly the blade and cowl diameter by 1 inch?

Then increase the pitch.

And decrease the pitch.


I have results but would like your speculation.