CFM calculation given pressure and orifice diameter?

[drummerdimitri]

I would like to know how many CFM a compressor needs to have in order to push a certain amount of air through and orifice of diameter X at any given pressure.

If for example, I needed to blow air out of a cooling nozzle at 90 psi with an orifice of 0.3 inches, what would the air output be in CFM assuming a continuous runtime?

Is there an online calculator for such things?

 

[Sevenhills1952]

This site has a calculator.
You need to know opening length also. I used your numbers and 1ft length=56.85cfm

Sent from my SM-S205DL using Tapatalk

 

[drummerdimitri]

This site has a calculator.
You need to know opening length also. I used your numbers and 1ft length=56.85cfm

Sent from my SM-S205DL using Tapatalk

That's not what I am looking for.

This site gives you the theoretical max CFM output given pressure, hose diameter and length.

I am asking for the actual flow rate in CFM of my specific system. These are totally different things...

 

[Sevenhills1952]

Sorry

Sent from my SM-S205DL using Tapatalk

 

[larry_g]

https://www.engineersedge.com/fluid_flow/discharge-air-orifice.htm

Read carefully as the shape of your orfice will change the flow drastically.

 

[drummerdimitri]

https://www.engineersedge.com/fluid_flow/discharge-air-orifice.htm

Read carefully as the shape of your orfice will change the flow drastically.

Thanks for that!

 

[drummerdimitri]

Sorry

Sent from my SM-S205DL using Tapatalk

Don't sweat it!