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can a loop be run like this? - Page 2

post #11 of 20
Quote:
Originally Posted by Firehawk View Post

Looks like he wants to split flow between CPU and Vreg blocks. Aren't VRM blocks fairly restrictive too? He might actually get more flow through the CPU block, which wouldn't be a bad thing.

Oh gosh, lol. I looked at it thinking it was for a GPU. That's what I get for staying up all night to work on my computer. rolleyes.gif

Anyways, yeah what VRM block exactly OP?
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post #12 of 20
On this build, which might be done some day, I plan on splitting from my CPU, to my two mobo blocks.
It should be less restrictive this way.
But you have to make sure both sides are getting sufficient flow. The least restrictive of the two will get more flow.
I would test it on the bench to ensure they both get good flow.
If not, you can always install a ball valve on the less restrictive block to permit more flow to the more restrictive one.
Edited by PepeLapiu - 4/5/14 at 5:17pm
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post #13 of 20
On second thought.
If you use a D5 pump at full speed, I'm sure this will work perfectly.
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post #14 of 20
If you use a ball valve to control flow, make sure to install it on the outlet instead of the inlet. This way you get full pressure in the block, just with reduced flow. If installed on the inlet, you'll reduce pressure in the block as well. Other than that caveat, Pepe's advice is sound.
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post #15 of 20
Quote:
Originally Posted by PepeLapiu View Post

On second thought.
If you use a D5 pump at full speed, I'm sure this will work perfectly.

Regardless of pump speed and pressure, it will ALWAYS fall victim to the 'path of least resistance' argument. This isn't to say that it won't work well, just that the flow ratio between the two branches will always be consistent.
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post #16 of 20
I don't think pressure would matter.
Just ahead of the pump, pressure is at it's maximum, while it's at near zero right before the pump.
Yet, you would not see any performance difference istalling.a block before, or after your pump.
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post #17 of 20
I learned that directly from plumbers at work. They use the same method for radiator systems in buildings. Shut offs before the item, and flow regulation after. They do the same with pneumatic systems, but in that case, moving air cylinders with reduced pressure can actually be dangerous. I may not know all the reasons why the standard exists, but I know that there is a standard for it.

Your argument of pump positioning is moot because the reservoir is always before the pump which results in the lowest pressure. In a completely closed loop, with no reservoir, the pressure at any given point in the loop, assuming no branching, is constant. If you're using a reservoir, that's not the case because it inherently kills all flow and pressure. Additionally, you would see a performance difference installing a block before the pump, because all that would be forcing the liquid through the block would be gravity and possibly a siphoning effect (again assuming the use of a res).

If you do have branches, you would use some means of flow regulation so you can adjust the resistance, or restrictiveness, of that branch and can moderate flow accordingly. I would almost suggest the use of flow metering on both branches, but they can be hard to hide and have limited uses other than initial setup.
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post #18 of 20
Thread Starter 
Yes, this will be VREG and CPU blocks only, no GPU. I am not too concerned with a 5-6 degree temp difference bcuz this loop will be TEC water chilled.
here are the blocks

1. EK-MOSFET-ASUS-X79-EN (VREG)

2. EK-SUPREMACY-CLEAN-CSQ-NP (CPU)

This loop will not have a RAD as my diagram indicated. Pump will be a swift655.



My GPU loop (a separate loop) will have a coolgate 280mm RAD with two GPU blocks and a res. will the Phobya DC12-260 12Volt Pump run this loop fine?
Edited by Custom Built - 4/5/14 at 6:46pm
post #19 of 20
Thread Starter 
bump.
post #20 of 20
Quote:
Originally Posted by Custom Built View Post

bump.

CPU and GPU loop should be fine.

Your loop is called a parallel loop and it has been done plenty of times. a 655 is powerful enough to run that simple loop
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