[bigben2k]

I used the basic program to run a few numbers.

First:

The flow range to be covered is determined by the nozzle diameter. In order to have better resolution, the maximum flow should be near the 3.0+ inches w.g. range in differential pressure. ... If the differential pressure is below 1 inch w.g., select a smaller nozzle. If the differential pressure exceeds 4.0 inches w.g., select a larger nozzle or combination of nozzles.

(from fantester)

so 1" is min, and 3" is max.

Using the program, I calculated the following flow rates:

DIAMETER    Flow at 1" wc    Flow at 3" wc
0.75"        11.8cfm        20.5cfm
1"        21.5cfm        37.5cfm
1.25"        33cfm        57cfm
1.5"        48cfm        83cfm
1.6"        54cfm        94cfm
2"        85cfm        147cfm
2.5"        133cfm        231cfm
3"        192cfm        333cfm

Nozzles listed are from the standard size list from Helander.

Back Monday.