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Quick question: More fins = more static pressure?

Man
By Man
in Cooling
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Looking for a high pressure 80mm intake fan for my vintage Antec chassis (NSK4480) which currently has a 120mm exhaust fan optimized for airflow. The chassis has very narrow vents for air intake so I doubt a standard fan would work properly.

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1 minute ago, doggywoofster said:

Not really. If you want high static pressure just get some Noctua fans.

That's not an option as I'm from Asia! AliExpress is my only hope and sellers there generally don't mention the CFM or PSI rating of their products.

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23 minutes ago, Man said:

Looking for a high pressure 80mm intake fan for my vintage Antec chassis (NSK4480) which currently has a 120mm exhaust fan optimized for airflow. The chassis has very narrow vents for air intake so I doubt a standard fan would work properly.

Generally speaking more fins is more pressure yes, but also RPM and blade-angle matters.

I would suggest looking at some high pressure fans and try and find a design that matches it.


But i can tell you with great certainty, if you expect anything from Aliexpress you will be disappointed. ;)

Don't expect anything good, then you might just be pleasantly surprised.

 

 

19 minutes ago, doggywoofster said:

Not really. If you want high static pressure just get some Noctua fans.

Lol that is very silly to say it like that. And completely useless.

They have fans that are for static pressure but also for low-noise and max CFM.
So at least tell what model or something.

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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Then go more RPM I guess....

Usually high RPM fans are also pressure optimised.

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3 minutes ago, HanZie82 said:

Generally speaking more fins is more pressure yes, but also RPM and blade-angle matters.

I would suggest looking at some high pressure fans and try and find a design that matches it.

 

That's what I've been doing since morning and from what I've seen so far, high CFM fans have fewer yet wider fins; usually ≤7, while SP optimized fans have 8+.

 

In any case, I'm considering this one:

 

image.png.4b77d117c99920df93d98330a0a1146e.png

 

 

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Aerodynamics is one of the most difficult part of liquid dynamics.

I'm not a rocket scientist though, my opinion is based on my opinion.

I edit my posts more often than not

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5 minutes ago, Tan3l6 said:

Aerodynamics is one of the most difficult part of advanced math imo.

I'm not a rocket scientist though, my opinion is based on my opinion.

Agreed.

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

Not willing to capitulate to the ignorance of the masses!

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