The Dust Acumulation Test

[country_3030]

That would mean you would have to seal every little place where dust could enter then put filters on the fans.

 

[Stumpjumper5200]

Wait a sec, negative pressure might be better for dust reduction........saying it's better for cooling is a whole other experiment. Sounds like an interesting one though.

BTW - I love how people call it "negative pressure" when it's really just more exhaust airflow then intake The real pressure drop is probably .0000001psi

 

[Intrepid]

well for you stumpjumper a single output fan, probably the one cooling your rad or block, will keep your case at negetive pressure and be silent.

 

[Crash893]

i think its a good test but i dont think posative air pressure would help keep out dust


it works in bio suits becase the air coming in is filtered so dust cant get in the cracks
but in computers the air is not fileterd and your essantuall blowing it in .

still want to see the results of the test.

 

[Stumpjumper5200]

I think the best way to keep dust out would be to filter the intakes and have more intake CFM then exhaust CFM, that way the "extra" air will blow OUT of the cracks.

 

[Intrepid]

having positive pressure (more intake than output) will cause there to be a pocket of stagnent air in the midle of the case allowing sudt to settle, which is what happened in hte positive pressure simulation. in the negeting pressure (more output adn input) the air moved constantly thru all of the case and dust was not allowed to settle.
it seems the best thing would be to have ALL of the holes or cracks in the case filtered or sealed (idealy) and have one or two fans pulling air out of the case, one back and one top.

 

[TimDgsr]

having positive pressure (more intake than output) will cause there to be a pocket of stagnent air in the midle of the case allowing sudt to settle, which is what happened in hte positive pressure simulation. in the negeting pressure (more output adn input) the air moved constantly thru all of the case and dust was not allowed to settle.
it seems the best thing would be to have ALL of the holes or cracks in the case filtered or sealed (idealy) and have one or two fans pulling air out of the case, one back and one top.

i'd like to think that the ideal setup would be exact intake and exhaust pressure. like sandwiching a rad.

 

[Stumpjumper5200]

True, you would want things to be equal, but in staying with the whole dust prevention theme, you would need the setup I described above (theoretically at least)