![]() We can think of the differing pressures as positive (absolute pressure of the fan) and negative pressure (pressure drop experienced after heat sink/exchanger). The Yate Loon D12SL-12 120mm Super Quiet Cooling Fan is designed for near silent operation while still providing good airflow. Because we are looking at utilising higher static pressure fans for possible heat sink or radiator cooling work, the static pressure differential then becomes the difference in air pressure on the inlet and exhaust of the chosen application. The Yate Loon D12SL-12 120mm High Speed Cooling Fan is designed for near silent operation while still providing good airflow. I want some high CFM, low DBA and low price fans. OC3D: 'These fans are an absolute steal. Delivering a higher static pressure compared to some of the more expensive fans making it an excellent choice for radiator cooling. Ok so that makes sense so far doesn't it? Essentially static pressure, or more accurately the measure of it, is the difference in pressure. Hey guys, I want my system to be more silent, but i want to lose the least amount of heat dissipation while lowering sound. The Yate Loon D12SM-12 is a high performance 120x120x25mm fan that pushes 62CFM at only 1800Rpm / 28.5dB. ![]() As the pressure differential rises, airflow drops. Based on the description and hype these fans are quieter than anything on the market. ![]() There is an inverse relationship between airflow and static pressure. Based on the specs alone the high speed Scythe Gentle Typhoon 120mm x 25mm Fan - 3000 RPM (D1225C12B7AP-29) would drop my noise by about 4 dba to 36dba while keeping the cfm about the same at 83 cfm when compared to Yate Loon D12SH-12. ![]() It is essentially a measure of the differential air pressure between the air pressures inside an application vs ambient air pressure outside of an application, which for airflow calculation purposes is usually 0 (zero). Static Pressure is usually stated either in inches of water (inH2O) or in millimeters of water (mmH2O). Furthermore I hope that by covering the basics it will help the newer members grasp what we are trying to achieve a little easier. I thought it would be pertinent to run over some basic theory in relation to static pressure and its benefits, as all fans are not created equal. ![]()
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