Negative or positive pressure? Does it matter?

[mtcn77]

Is it? Filters cut CFM significantly, as do radiators. It’d depend on the fan speeds and CFM.

It is not about cfms, quite so much as laminar flow and turbulence. Remember: fans flow cfm whereas the air flows in a straight line. Inertia is your enemy. Therefore, the question becomes, "How best we can uniformally flow air inside the case" - the answer is the sealed venting system, invented by little old me. No thanks due, you can thank the tech journalists of old that inspired me to it. I really hate the shill vendor mouth pieces of recent years. No credit to them.

 

[claes]

You have a real knack for going wayyyy off topic lol

 

[lexluthermiester]

more intake= positive, so 8 intake + 5 exhaust is it positive?

If that case were sealed except for the fan ports, then yes, there would be a slightly higher level of air-pressure in your case. But as your case has venting holes and gaps all over the place, no. The air pressure in your case is no different than outside of it. In your situation, static airflow through the filter shown is the mechanism for the lowered dust level. However, a greater factor is likely to be a lower dust level in your home which would naturally contribute to lower dust levels in and around your case.

There seems to be a great deal of misunderstanding between the concepts of "Air Pressure" and "Air Flow". They are not the same.

 

[claes]

IF all of the fans are the same and running at the same speed, you are still not looking at positive pressure, unless @FireFox were to remove the filters and radiators which, obviously, they haven’t. At best it’s equal, assuming the conditions I mentioned, but we don’t know radiator/filter placement, fan speeds, CFM/SP, etc, so IDK :shrug:

Simply doing some bogus 8 - 5 = 3 math completely ignores the circumstances people are dealing with. More, mtcn77 is often full of it, but so is the idea that not hermetically sealing a case = no pressure. Airflow matters, as we can always overcome buoyancy when we’re using pressure and airflow to force air where we want it to go

 

[mtcn77]

hermetically sealing

You are demonstrating your misunderstanding. I didn't say hermetic, I advocated for sealed passive vents. You really make it difficult on yourself if you are always so wary about anybody's statement.

Airflow matters, as we can always overcome buoyancy when we’re using pressure and airflow to force air where we want it to

That is an overstatement backed only by your selfrighteousness.

 

[claes]

Jesus — everyone here is so interested in claiming authority and disinterested in the conversation.

Again, you have a knack for being wildly off-topic. I was responding to lex, who was arguing that because Firefox’s case has holes in it that either a) maintaining a positive or negative pressure was impossible or b) that 8 - 5 = 3 becomes moot because of holes designed for exhaust flow.

If you read more carefully, I was actually defending your assertion that air goes where it’s pushed, to be loose about it. Thanks for insulting me while I come to your defense! Airflow does matter — why else are you arguing for ducts?!

edits: whoops, mixed threads while drinking cocktail

 

[mtcn77]

Firefox’s case has holes in it that either a) maintaining a positive or negative pressure was impossible

Yes, we seal them with tape.

Please do take your own advice and listen to what other users are typing.

everyone here is so interested in claiming authority and disinterested in the conversation.

That is not everyone... I see only one person here with that gross negligence, the one I'm spoonfeeding information to.

 

[claes]

You are ignoring the conversation and actively arguing for people, with more influence and generally better attuned (so many puns!) than you, who disagree with your premise, while I am defending an extrapolation based on your argument. Thanks for being rude about it.l and generally missing the point.

Edit: I agree — air goes where you direct it, and pressure can be increased with sealment. I don’t know why you are arguing against me so aggressively. Looking forward to you nitpicking about some wording in here and calling me an asshole.

 

[mtcn77]

If you read more carefully

I honestly would like the challenge for once, but you keep projecting these sentiments.

You are ignoring the conversation and actively arguing for people, with more influence and generally better attuned (so many puns!) than you, who disagree with your premise, while I am defending an extrapolation based on your argument. Thanks for being rude about it.

We are not on the same page and since I make the arguments, you better be attuned if you are to catch up on the premises you keep failing at.

 

[claes]

K, sorry for defending your argument I guess, thanks for swinging your dick around, it is really nice :shrug:

edit: yes, we are definitely not on the same page

 

[mtcn77]

I am defending an extrapolation based on your argument.

This is not a debate club, we are arguing air cooling which does not take sides, or preference.

edit: yes, we are definitely not on the same page

Can we return to the topic you have attempted to digress from with your void inquiries? Thank you.

 

[claes]

Mtcn says “pressure is possible,” lex says “nah,” claes says “yes, pressure is possible, even if not in perfect conditions,” mtcn says “no you’re wrong!”

 

[mtcn77]

Mtcn says “pressure is possible,” lex says “nah,” claes says “yes, pressure is possible, even if not in perfect conditions,” mtcn says “no you’re wrong!”

Well, you are both trolls for that matter if you are asking which of us are.
PS: you might naively argue against lex as you say, but that is called "bringing it up" when it has already been said and done - not to discredit any merit in your statement.

Debates are moving objects, one cannot bring past points forward without touching the timeline.

 

[claes]

Good point thanks for the contribution much help to OP

 

[mtcn77]

Good point thanks for the contribution much help to OP

Clarifying flood posts that ruin the general understanding is good contribution in my books. I really don't like this attitude, could we leave our feelings out of it for once?

 

[pavle]

You need all fans to blow out of the case to help vaporise the remaining speck of dust in the case.

Seriously though, I have the same amount of fans for intake as for exhaust (power supply fan is counted) and the most important factor, filters! Intake air filters are important (you can gently clean them every week as you vacuum-clean the place). You can improvise on the material of which they're made, I use pantyhose/nylon for filters and it works well for my machines.

 

[claes]

Oh wow lol — I got drunk and merged the HDD noise thread with this one lol. Still, somehow I managed to balance both and a confused troll! Huzzah for drinks watching only murders in the building with a friend, hope you all are enjoying your evening!

 

[mtcn77]

You need all fans to blow out of the case to help vaporise the remaining speck of dust in the case.

Seriously though, I have the same amount of fans for intake as for exhaust (power supply fan is counted) and the most important factor, filters! Intake air filters are important (you can gently clean them every week as you vacuum-clean the place). You can improvise on the material of which they're made, I use pantyhose/nylon for filters and it works well for my machines.

I'm thinking of using a shaving brush to dust out the crevices. I used soap when I cleaned the last time and it really did work with the detachable filters. Why not use it everywhere on fine dust?

 

[claes]

Fixed! Only one post

 

[mtcn77]

Oh wow lol — I got drunk and merged the HDD noise thread with this one lol. Still, somehow I managed to balance both and a confused troll! Huzzah for drinks watching only murders in the building with a friend, hope you all are enjoying your evening!

Don't drink. It kills your neurons if you still have left any. Too much free water, not enough salt is not good, causes brain atrophy. You are free to dismiss it, of course.

 

[pavle]

I'm thinking of using a shaving brush to dust out the crevices. I used soap when I cleaned the last time and it really did work with the detachable filters. Why not use it everywhere on fine dust?

Of course, if the filter is removable you can use brush, but if not, some dust will fall into the case. Now even with my filters there's still what I call "microdust" in the case but much less than without them.

 

[claes]

Don't drink. It kills your neurons if you still have left any. Too much free water, not enough salt is not good, causes brain atrophy. You are free to dismiss it, of course.

You mean any left*. I’m aware, thanks! I take supplements to overcome hangovers! Thanks for all that dick though!

 

[mtcn77]

You mean any left*. I’m aware, thanks! I take supplements to overcome hangovers! Thanks for all that dick though!

Supplements are toxic. All you need is breakfast(turkish is like the mediterranean salad) and eggs.

 

[claes]

Thanks for the condescending and oddly nationalistic advice! I eat plenty of salads and start my day with an omelette! Have a good night!

 

[lexluthermiester]

Still, somehow I managed to balance both and still be a confused troll!

Fixed that for you.