Pressure requirements?

[zachsss62688]

Pressure requirements seem to be the most confusing thing in the new setup I'm building. First, since I'm going TEC, the components are the polar opposite of restrictive- Swiftech MCW50 on GPU and MCW462 on CPU, most likely MCW20 on NB, and 2-342 heatercores (one for each loop, since the gpu/nb and cpu are going to be two separate loops). If this was for a setup going directly in the PC case, I have no doubts that just about anything would do it... I could just throw in a Hydor and be done with it. However, the fans/radiators are going to be mounted in a box that is about 7-8' away from my pc, with tubes routed on the floor behind my bed. The box setup has a minimum of elbows, and the ones that are there are either just bent tubing (1/2" Clearflex 60- no kinks ) or 1/2" PVC, so they don't terribly restrict flow. Would a single Iwaki MD-15RLT, with a Y splitter on the input and output, be enough to handle both loops?

[fhorst]

That's about 4 meters extra tubing... + the tubing in your cooler case + additional tubing to get outside of the case.
Roughly speaking 5 meters of extra tubing...

Will an Iwaki MD-15RLT handle :shrug: ? Once you get the air out, You might have some waterflow left, and as you are using a pelt it might be enough.

I guess you need to use pelts to overcome the low waterflow

But then again, low flow systems with 6.5 mm tubing and a 300l pump work also quite good (koolance, the innovatek "german" systems, etc) but they don't do wonders.

Aslong as you won't OC your GPU, it might just be enough but don't expect wonders when you want to OC your GPU!

[Gooserider]

I am assuming that you are using different loops because you are only running pelts on the CPU, not the rest of the stuff?

If so, what I've seen on pelts suggests that you want two completely seperate circuits since each will be operating at a different temp range.

If so, you can't use a splitter setup and a single pump as that would be combining the two loops! You need a seperate pump for each loop. This will be more expensive, but each of the pumps can be somewhat smaller, so you should be able to save some there. I would expect that any good quality, reasonably high head pump should be able to do the job on a single loop.

Gooserider

[zachsss62688]

There are basically two loops running in parallel if I decide to use a big pump, and two separate loops if I use two. Both will be running a pelt setup. There's one loop for my GPU/NB, and one for my CPU. The GPU has an MCW50-T, and the CPU has an MCW462-UHT. I'll have the GPU loop set up so that water goes to the NB first, comes out with a marginally higher temp, cools the pelt, then goes back to the pump/rad.

[8-Ball]

Originally posted by zachsss62688
I'll have the GPU loop set up so that water goes to the NB first, comes out with a marginally higher temp, cools the pelt, then goes back to the pump/rad.

Unless you have RIDICULOUSLY low flow rates, it wouldn't really work that way.

The water temperature barely changes through out the loop.

It is the temperature difference between the water and ambient and again, between the water and the cooled object that makes the difference.

If you add a pelt to the loop, the water entering the NB block will be considerably warmer.

8-ball

[Gooserider]

The important point is that you do NOT want devices with pelts on them sharing a loop with devices that don't!

Pelts have very high operating temps, and unless you have really amazing fluid volumes and radiator effectiveness (like verging on impossible) you will have quite high temperature coolant going through your pelt loop. If you run that high temp coolant through a non-pelt equipped device, you have a good chance that you will be HEATING it rather than cooling it! At best, you will be cooling it only marginally, possibly less than you would have gotten with a passive air cooled solution (at least on an NB that doesn't put out that much heat...)

Gooserider