TylerBello

If what I said was rude then I might as well question my entire existence.

You in theory "shot down" claymanhb's entire post and thought on the subject. He was speaking with authority,and you ruined it,thereby enlightening members who did not know the specifics (such as myself).

So I in reply stated own..ed,basically referring to your informing the other members of negative pressure existing on this earth.

EDIT:and obviously it was said in a joking manner,not a disrespectful manner. Hence "own...ed" not "OMFGZ PW3NED NOOBZORZ!"

EDIT 2clayman)You probably knew this,due to the tone of your post I think you knew that vacuum was sometimes referred to as negative pressure.(incorrectly i assume?)

rtm2006

Let me see if I under stand this...

its just like playing in your drink in a nice food place with a straw, you stick the straw in your drink and cover the top with your finger then lift the straw out your drink stays in it to because it is below atmospheric pressure. So in order to make a water-cooling setup like this you would have to have everything below atmospheric pressure.

Well then I don’t know what to do that makes it different from a normal water-cooling setup?? You can’t just fill it with water and run the pump that would just be a normal water-cooling setup, would it not. unless the only difference between the low pressure setup is the fact that the res is open and at the bottom of the case which if that is the only difference wouldn't people think of that a long time ago.

so what i'm thinking is in order to make my set up leak proof all I have to do is cut the top off my res move it to the bottom of my case then run my pump under a lower setting so it has less head????

Am I right or did I miss something??

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claymanhb

Negative pressure is found in some theories of physics, such as those involving dark energy or negative mass. It results in a repulsive gravitational force. The Casimir (look it up)effect produces a region of negative pressure.


Sorry, never heard vacuum called negative pressure by any scientific mind.

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TylerBello

^genius.

I have absolutely no knowledge on the situation,so I have no place in this conversation really. Just found it very interesting when I first read it.

Goldenpi

Talk of the terminology 'negative pressure' just confuses things. When I used the term, I meant negative pressure relative to atmospheric pressure. Call atmospheric zero. I know that atmospheric pressure is not zero, but it makes the system a lot easier to understand.

Here are some points beyond debate:
1. It does cool things. Not as well as some other systems, but it works.
2. Those parts which are within my case cannot leak water. Ive tested this.


RTM seems to have the basic concept with the drinking straw idea - thats how it works. But the pump does raise the pressure at its outlet, so you cant just put the open reservoir at the bottom of your case. You need to place it well below the bottom of the case. For me, I have the case on my desk and the reservoir on a shelf at the bottom of the desk. The minimum height difference between reservoir and case depends on your pump. This is why its so hard - you need a lot of vertical space to make it work right, and the only benefit of it is that leaks are impossible. That makes it appealing to those on a low budget who just cant afford to risk a leak.

rtm2006

ok, so the res needs to be below the case i can do that if i buy more tubing, and does the pump need to go down with it or just the res???

reps+ for you

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Leo

gosh... by negative pressure he just means that the pressure is below atmospheric pressure...

absolute vacuum is pressure = 0

Leo

Hey, Goldenpi, great job! By the way, the idea of "negative pressure" is easy to understand.

There are basically two pressure components, the static and the dynamic pressures. Their sum is called the total pressure, and it is, by the way, constant:

total pressure = static pressure + dynamic pressure

The dynamic pressures is equal to:

pdyn = 0,5 * density * velocity ^ 2

And the static pressure is the pressure that the air will feel at the tube surroundings:

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Goldenpi

I understand the physics, just a matter of terminology.

The pump doesn't need to go down, though its a good idea - some impeller pumps dislike low intake pressures.

Your pump will not be able to prime the system by itsself - for that you just need to take the return tube to your reservoir (another good reason to use a tub) and suck until its mostly full of coolent. It will act as a syphon after that, and the pump can circulate it normally.

somody

How the hell did I say that there's equal pressure on both sides of the pump. Read it again! I didn't even edit it!