tech: Your numbers look pretty good.
512 cfm @ 1psig.


But..

Sit back and think about what you asking for... Some air under pressure. Well actually a lot of air under pressure..

How does the auto/truck world approach this? Do they use motors running blowers? No. "Why?" we are asking.

The reason is because a single PSI is a whole lot of pressure when you are talking about air. Go look at www.grainger.com the largest supplier of blowers for industry. You won't find a single blower that runs clear up to 1PSI ! It is so hard to get there that the industry doesn't even use the same units of measure. They uses *inches of water column*! Often fractions of an inch even.

1PSI is 27.68inches of water column.

*High* pressure blowers, all of which run over 2HP have output pressures of
maybe 5inches of water column!

Back to the issue at hand. If you want to herd air around at PSI levels you need to do one of two things:

Use a mechanical pump that essentially grabs some air and mashes it into the space of interest.

Or turn a centrifical impeller at truly mind boggling speeds to literally bat the air molecules somewhere like line drives.

A roots type blower (really a mechanical pump) is the first type mentioned. The air gets trapped by the vanes and must go where it is shoved to.

The second type is the turbocharger. It is the impeller type and they often turn at 120,000rpm.

So. If we completely ignore the horsepower issue you will still need to come up with an actual blower that can provide your 1 PSI . There are NO "fans" that can vagely approach this goal.

I know of no blowers that can! The blowers that get to 7inches of water often weight 300 pounds and are 30" in diameter.

There is a belt driven supercharger that gears up the impeller to about 40,000RPM so the system can be small enough to squeeze under the hood.

Back to the roots type blower. They are belt driven because you are going to need several HP to drive it.

Once someone goes to the bother of this and the expense why in the heck would they want only 1PSI so they can add on 20-30HP? There are far easier more reliable ways of coming up with those few ponies.

Tech what I'm saying is never mind the HP show me a blower/fan/pump that you can drive 500 cfm thru @ 1PSI THEN worry about how to drive it.