Dual loop, single res, few questions

pgi947

pgi947

pgi947

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Evening all,

Just finalising my plans to move into a dual loop but I plan to do it from a single (large) res. I do have a few questions that I'm 90% sure I'll be spot on with - just want to make sure!!

I take it, with it being a single res, that components from both loops will benefit from the others radiator space, meaning for example, I could have all components in one loop and all radiators in another? As the fluid is still being cooled. I'm not planning to do this btw, just taking some load from my struggling D5.

Am I likely to hit any flow issues? As restriction may be slightly different between the two loops. Port orientation important? Again I know its not going to really matter but better to be safe :p

Loop 1: Res>D5>GPU>GPU>360>280>360
Loop 2: Res>D5>CPU>Mosfet>1080
 
If you are looking for a dual loop setup, surely you will need to use two reservoirs, if it's a flow issue you have and not temp related why not just run two pumps in one loop?
 
I was under the impression two d5s in serial wouldn't give me that much extra?

Single d5 is really struggling with my loop even at top speed, seemed logical at the time of typing/thinking to split the load as dual loops.
 
Had the same problem with a loop similar to yours using a 1260 rad. 2 D5's and an EK dual top fixed it. Had to have the pumps at speed 5 for the initial bleeding and filling process but after that they were ok at 1.
 
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Thats good to know, maybe a dual top is in order then, I have seen an EK one for £25 so maybe worth a punt.

Its hard work finding any reviews for dual D5 setups in comparison to a single pump, as the first thing that is always suggested is that its absolute overkill and the thread dies :(
 
I run two EK DCP 4.0's in series... in theory I have less peak flow potential, but with over 8m of head I can put anything I want in my loop and not worry about it

I never really understood people's fascination with D5's as they actually have pretty poor head pressure
 
A combined reservoir seems reasonable. You're not certain to get good mixing within the reservoir though, so may have to fill it with copper wool or similar if you want to make the temperature uniform. How big a reservoir? It would be possible to run through a CFD simulation of the reservoir to determine where to put the ports, but I'm not sure I'd bother.

I have got to get around to trying my 80 litre reservoir.
 
andybird123 said:
I run two EK DCP 4.0's in series... in theory I have less peak flow potential, but with over 8m of head I can put anything I want in my loop and not worry about it

I never really understood people's fascination with D5's as they actually have pretty poor head pressure
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Do those pumps come with a voucher for a pair of earmuffs? :D
 
andybird123 said:
They are totally silent, so not sure what you mean.... I am guessing you meant ear defenders, because I also can't work out how a water pump would make my ears cold
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I wouldn't know what they're called because I own a D5 and have no use for them!

Boooom :D!

I had to turn my dcp 2.2 down with a fan controller so I assumed the 4 is a noisy brute. What I did notice though is that it emitted a much deeper sound than the D5, totally different pitch/tone
 
did you have yours decoupled or bolted straight to something?

I have to touch mine from time to time to make sure they are actually running (until I get the RPM signal extension wired up), they are quieter than my friends D5 who has his on setting 4 - mine are wired straight to 12V
 
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