What is static pressure important for?

Static pressure is important for cooling performance in situations where completely free air circulation is not possible. This can be a narrow-meshed housing inlet, or radiators and heat sinks with their closely spaced cooling fins. To guarantee a high air circulation through these resistors, the highest possible static pressure is required.

Without a correspondingly high static pressure, the desired air circulation can not be achieved, which means that cooling capacity is lost.
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