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Fan orientation, am I doing it right? - Page 3

post #21 of 24
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Quote:
Originally Posted by Emissary of Pain View Post
I fully agree with this post ... ... I was always taught that hot air rises ... even in a small pc that still applies ...

You will have to large intakes pushing all the hot air in the tower 2 the bottom where u have no exhaust fans ... also ... the only exhaust fan u have will be disrupted by the 2 intakes at the top probably cutting it's effectiveness in half ...


Smooth flowing airflow is more effective than blasting random amounts of air every-which-way ...


Just my 2c,
If I am wrong ... then I am learning as well ... hehe
Thanks, but I've already tried several configurations, and having both fans as intakes seems to be the best. Completely unexpected.
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post #22 of 24
That;s probably because hot air doesnt rise fast enough/gets caught up in other fan's airflow to make a huge difference...then again, im speculating
    
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post #23 of 24
Quote:
Originally Posted by ____ View Post
Thanks, but I've already tried several configurations, and having both fans as intakes seems to be the best. Completely unexpected.
Whoa ... that is unexpected to me as well ... maybe I should give it a go ...


Ps ... How do I delete a post ... I posted onto your thread instead of another completely by accident ... guess I hadn't woken up properly ... lol
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post #24 of 24
Quote:
Originally Posted by ____ View Post
Thanks, but I've already tried several configurations, and having both fans as intakes seems to be the best. Completely unexpected.
Have you tried without the rear-most top fan? Blocking it off will likely help quite a bit if there's a wall or something right behind your case (as is the situation with my setup). The main point behind not having it for most is because of positive feedback loops that are likely to occur. First and foremost, air goes where you push it, but when you have nothing pushing it, hot air will rise. When a fan sucks in air, it tends to suck air from all directions, not just straight opposite where it's pointed, so it could end up sucking in hot air rising from your exhaust area. How much of an impact it would have is hard to estimate unless you actually try it. One negative here would be a lack of mosfet/VRM airflow with large tower coolers, so watch out.
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