Guide : Positive Air Pressure in PC-Chassis

[SidhuScorpion]

Silverstone has just released a new video about the positive air pressure they are using in the previously tested Fortress FT01 case. Silverstone's engineers used smoke to show the air circulation within the chassis which looks very impressive. We have tested this feature before with turning the large upper fan around that it exhausts the air. The temperatures were worse which shows that possitive air pressure indeed helps this case with good cooling.

Video showing the positive air pressure cooling in the SilverStone Fortress FT01 PC case with the use of a smoke machine, to make the airflow "visible". Case loaded with Core i7 / 4870X2.

[YOUTUBE]Qe-2ZqmSGug[/YOUTUBE]​

 

[Grease Monk]

Yeah, posted on anandtech as well.

AnandTech

There is another advantage to maintaining a net positive pressure in the case with regard to dust. Since the pressure in the case is higher than outside, dust will not enter through any openings other than the intakes, which should be fitted with filters anyway.

btw, the youtube tag is youtube in square brackets.

 

[SidhuScorpion]

Thanks , corrected.

 

[stalker]

Thanks , corrected.

Please do use tags AND link to the source always.

 

[stellarhopper]

We have tested this feature before with turning the large upper fan around that it exhausts the air. The temperatures were worse which shows that possitive air pressure indeed helps this case with good cooling.
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:huh: :huh: confused:huh: :huh:
does this mean positive air pressure is good or bad??

 

[d@rK nEmEsIs]

positive air pressure throws air out of the cabinet so dust collection inside ur cabinet is minimal but negative air pressure sucks in the air which results in accumulation of dust.Negative air pressure is good for a air conditioned room as cold air gets sucked in.For a normal room positive air pressure is good more exhaust than intake.

 

[Grease Monk]

For a normal room positive air pressure is good more exhaust than intake.

lol, hacker, thats totally the opposite way around!

Positive pressure means there is a net positive pressure inside the cabinet. That means the pressure inside is higher than the pressure outside. To achieve that, you need more intake fans than exhaust (or atleast the net intake cfm should be greater than the net exhaust cfm).

This video proves that a net positive chasis pressure is good for both dust prevention and circulation. It doesnt push dust out, as much as keep it out from the gaps around the case. However, in order to create that positive pressure, more air needs to be flowing into the case through fans, allowing a clear path for dust to enter. The dust prevention theory is true on the assumption that proper filtration devices are placed on the intakes.

 

[d@rK nEmEsIs]

lol, hacker, thats totally the opposite way around!

Positive pressure means there is a net positive pressure inside the cabinet. That means the pressure inside is higher than the pressure outside. To achieve that, you need more intake fans than exhaust (or atleast the net intake cfm should be greater than the net exhaust cfm).

This video proves that a net positive chasis pressure is good for both dust prevention and circulation. It doesnt push dust out, as much as keep it out from the gaps around the case. However, in order to create that positive pressure, more air needs to be flowing into the case through fans, allowing a clear path for dust to enter. The dust prevention theory is true on the assumption that proper filtration devices are placed on the intakes.

what I meant to say that in a positive air pressure air is thrown out from the vents.While in -ve the air is sucked in the case.Thats y I said in +ve air pressure more exhaust than intake.