What is the ideal fan for maximizing pressure generated at low RPM/dBA?

redleader · 12-01-2002, 12:51 AM

My experiemnts with 80mm fans on heatercores has not worked well. They seem to lack the pressure to force air through a radiator as effectively as I'd like. For reference 3 25CFM fans < 1 120mm undervolted to 40CFM.

When I redo my system I want to use fans that are not only very quiet, but also can push well against flow resistance at a given dB.

Are there any fans that tolerate flow resistance well?

MadDogMe · 12-02-2002, 05:16 AM

I don't know of any specific axial fan, other than getting a good high CFM 38mm thick 120mm fan and running it at the speed/volume that suits you :shrug: . Papst DO make a creature called the 'Diagonal' fan which is a hybrid of the 'axial' and 'radial' fans that has a HUGE! static pressure, I've only seen it at the 127mm size though, and then only on their website, never for sale anywhere, if you find a retailer let me know please?...

redleader · 12-02-2002, 07:25 PM

Why does DD only sell 32mm thick papst fans? 38mm fans would work better right?

Edit: Not to mention they're the ballbearing models

12-01-2002, 12:51 AM	#1
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	What is the ideal fan for maximizing pressure generated at low RPM/dBA? My experiemnts with 80mm fans on heatercores has not worked well. They seem to lack the pressure to force air through a radiator as effectively as I'd like. For reference 3 25CFM fans < 1 120mm undervolted to 40CFM. When I redo my system I want to use fans that are not only very quiet, but also can push well against flow resistance at a given dB. Are there any fans that tolerate flow resistance well?

12-02-2002, 05:16 AM	#2
MadDogMe Thermophile Join Date: Aug 2002 Location: Just shut up ;) ... Posts: 1,068	I don't know of any specific axial fan, other than getting a good high CFM 38mm thick 120mm fan and running it at the speed/volume that suits you :shrug: . Papst DO make a creature called the 'Diagonal' fan which is a hybrid of the 'axial' and 'radial' fans that has a HUGE! static pressure, I've only seen it at the 127mm size though, and then only on their website, never for sale anywhere, if you find a retailer let me know please?...

12-02-2002, 07:25 PM	#3
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	Why does DD only sell 32mm thick papst fans? 38mm fans would work better right? Edit: Not to mention they're the ballbearing models

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