Efficient& quiet PC fan design

Piwoslaw · 11-21-15, 02:52 AM

I'm using 120mm PC fans to increase the airflow over my heating system's radiators. Some of the fans have become too loud - I'm assuming the bearings are worn, as I clean the dust off twice a year. I'd like to replace them with fans that will be both quiet and efficient (best airflow at lowest current draw), but from looking at a few I see that quiet just means lowering the rpms, which also reduces the airflow.

Are there any particular designs I should be looking for? Number of blades, special blade shapes, bearing types, etc.? 140mm fans are too large, unfortunately

11-21-15, 02:52 AM	#1
Piwoslaw Super Moderator Join Date: May 2009 Location: Warsaw, Poland Posts: 961 Thanks: 188 Thanked 110 Times in 86 Posts	Efficient& quiet PC fan design I'm using 120mm PC fans to increase the airflow over my heating system's radiators. Some of the fans have become too loud - I'm assuming the bearings are worn, as I clean the dust off twice a year. I'd like to replace them with fans that will be both quiet and efficient (best airflow at lowest current draw), but from looking at a few I see that quiet just means lowering the rpms, which also reduces the airflow. Are there any particular designs I should be looking for? Number of blades, special blade shapes, bearing types, etc.? 140mm fans are too large, unfortunately __________________ Ecorenovation - the bottomless piggy bank that tries to tame the energy hog.