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post #12561 of 105881
Updated

has anyone seen any comparisons of the Monsta vs. some other normal thickness rads? I almost suspect that normal thickness would be better because there would be less airflow restriction.
post #12562 of 105881
Quote:
Originally Posted by Khalam View Post
yes bro 2 pumps, problem is I had everything setup already and just needed to fill it up when you posted your option (I had no more tubing left and I couldnt be without a pc any longer). Atm ive got a different problem, there is a lot of air bubbles in the loop and the res but whatever angle I wouldnt hold the case at they wont go away, and even though the res on the right isnt totally full it will spit back any water ill pure in because of that every 2-3min the right side pump whines and squeels for a few sec and my temps go up by around 10c for those few sec
i had what i think was the same problem. a little vortex forms on the res outlet, i fixed it by turning my pump down a knotch
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post #12563 of 105881
Quote:
Originally Posted by kevingreenbmx View Post
Updated

has anyone seen any comparisons of the Monsta vs. some other normal thickness rads? I almost suspect that normal thickness would be better because there would be less airflow restriction.
Can you elaborate on that theory a bit? Cus I would argue that thickness of the rad has no influence on airflow restriction. 30 mm rads would have same restriction as 100 mm if the fin density is the same. Imagine a really thick rad with no fins, in fact that would be what we call a shroud (no restriction). Not an expert on this, just what my intuition tells me.
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post #12564 of 105881
Quote:
Originally Posted by kiwiasian View Post
No it fits fine.
It is slightly angled and points upwards away from the ramsinks.

Quote:
Originally Posted by thrasherht View Post
the way that tubing isn't even past the edge of the barb would scare the **** out of me. I know how tight that tubing goes on there, but I just wouldn't trust it.
I'd be scared too...
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post #12565 of 105881
Its Rubber on Plastic, It has a death grip on it.
    
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post #12566 of 105881
Quote:
Originally Posted by Aliaus View Post
Can you elaborate on that theory a bit? Cus I would argue that thickness of the rad has no influence on airflow restriction. 30 mm rads would have same restriction as 100 mm if the fin density is the same. Imagine a really thick rad with no fins, in fact that would be what we call a shroud (no restriction). Not an expert on this, just what my intuition tells me.
friction my friend. the longer the surface is that the air is flowing over (the fins), the greater the friction will be. Which means greater pressure drop; which means lower air flow rate. If the airflow is reduced enough then the cooling will not be as good despite the larger surface area. It is all fundamental fluid dynamics
Edited by kevingreenbmx - 7/23/11 at 8:21pm
post #12567 of 105881
Quote:
Originally Posted by Aliaus View Post
Can you elaborate on that theory a bit? Cus I would argue that thickness of the rad has no influence on airflow restriction. 30 mm rads would have same restriction as 100 mm if the fin density is the same. Imagine a really thick rad with no fins, in fact that would be what we call a shroud (no restriction). Not an expert on this, just what my intuition tells me.
Yeah I don't think so. Thinner Rads actually allow more surface flow than thicker ones. You're fans would have to be pretty powerful to get the same level of cooling as a 35mm Rad does with a Yate Loon 120 fan(for the sake of example) blowing through it. Also 100mm would create more noise as the airflow bounces through the vanes.

In face Black Ice has a low airflow Rad that has 9 vanes per inch along a dual pass 480 setup. With 3/16" gap between the Fans and the Vanes to get them off the vanes. Anyone that has a high dB fan knows full well the racket they make when mounted to flow through a metal case grill.

It's not just cooling you're after but a quieter system in most instances. Only the younger or hearing impaired crowd have no issues with loud droning fans at full load.

~Ceadder
 
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post #12568 of 105881
One also has to remember that all fans "twist" the air... in other words, the air isn't being pushed straight into or sucked out of the radiator. The air rotates like a tornado and that causes a lot of the noise when a fan is too close to the fins.

Another thing that happens is excess air that can't be pushed through or sucked out of the radiator bleeds past the fan blades causing little turbulences and vortices because of pressure differential.

All these things add up to flow degradation and noise. That is a major reason shrouds/plenums help somewhat... the air has a chance to stop spinning and become less turbulent and more linear in flow.

Remember, fans (bladed types) are not positive displacement pumps of any sort... pressure differential between the intake/exhaust sides will always affect noise and efficiency.


Edited by Tex1954 - 7/24/11 at 6:09am
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post #12569 of 105881
The thicker the rad is the more air pressure needs to have to cool down the extra surface, thin rads have low air restriction and air pressure drop but they dont have the thermal dissipation capacity of a thicker rad with same fins per inch, you can this for example in AC units the bigger the condenser coil the more powerful the fan needs to be.
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post #12570 of 105881
Quote:
Originally Posted by kevingreenbmx View Post
friction my friend. the longer the surface is that the air is flowing over (the fins), the greater the friction will be. Which means greater pressure drop; which means lower air flow rate. If the airflow is reduced enough then the cooling will not be as good despite the larger surface area. It is all fundamental fluid dynamics
Interesting, but are you sure we're not overestimating the friction between the air and fins? Though maybe I'm underestimating. Now I'm really curious. Does anyone know any comparative data between thin and thick rads?
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