|
It is about 50/50. Mainly depending on the ability of the fan to maintain a certain static pressure and on which side of the fan this pressure is designed to hold. Depending on the turbulence created by the fan blades pushing though fins could be less efficient. On the other hand turbulence and pressure drops created by the fins makes the fan less efficient when pulling.
Edit:
Similar argument regarding computer cases. Do you pressurize the case with intake fans or create a negative pressure case with exhaust fans. Both seem to work as long as the air flow passes by and through the CPU heatsink which is the thing that matters.
|