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Multiple PSUs in liquid loop.

post #1 of 8
Thread Starter 
Sorry if this is in the wrong section but I'm currently looking at building a loop in double stacked case that has two systems running off a single loop. The issue comes in as I want to be able to run both pumps and all the fans if either system or both systems are on. I was thinking of during rigging a molex connection from the pumps and fans so that each molex is connected to both PSU's simultaneously effectively powering the system either singularly or with a load balanced in parallel over both PSU's.

Will this setup work or be liable to blow up? Otherwise do you guys have any suggestions how to make such a system work?
post #2 of 8
Quote:
Originally Posted by AccountIsTaken View Post

Sorry if this is in the wrong section but I'm currently looking at building a loop in double stacked case that has two systems running off a single loop. The issue comes in as I want to be able to run both pumps and all the fans if either system or both systems are on. I was thinking of during rigging a molex connection from the pumps and fans so that each molex is connected to both PSU's simultaneously effectively powering the system either singularly or with a load balanced in parallel over both PSU's.

Will this setup work or be liable to blow up? Otherwise do you guys have any suggestions how to make such a system work?


Essentially you'll be running them in parallel which means... and generally regardless of series or parallel with psu that means...


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post #3 of 8
Quote:
Originally Posted by tsm106 View Post

Essentially you'll be running them in parallel which means... and generally regardless of series or parallel with psu that means...


A picture is worth a thousand words biggrin.gif
post #4 of 8
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My System
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SuperServer.
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CPUMotherboardGraphicsRAM
I5 2500K ASUS P8Z68-V PRO EVGA GTX 580 x 2 16Gig G.Skill 1600 
Hard DriveOptical DriveOSMonitor
1 x 120G ssd,3 x 2tb WD Green, 1 x 300gb Veloci... External Win 10Pro 64bit Lg 27" 
KeyboardPowerCaseMouse
Logitech G19 TT Q-Power 750w CM 690II Cyber Sniper 
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Razer Mantis (control) Custom Water Cooled 
CPUMotherboardGraphicsRAM
Intel 2700k Asrock Z77 Pro4-M GTX260 G.SKILL DDR3 1600 8Gb 
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post #5 of 8
Quote:
Originally Posted by BadDad62 View Post

I would think 2 PSUs linked with one of these



http://www.frozencpu.com/products/5637/cpa-167/Lian_Li_Dual_Power_Supply_Adapter_Cable.html
He wrote that he is powering up multiple systems, 2 motherboards.
post #6 of 8
I suggest you run dual pumps in the single loop. That way you get better flow when both systems are on and more heat is present.


Then simply wire one pump to each psu.

The alternative of powering the pump of the psu off the system that is active will require a switch or relay to be setup so that power from each psu does not mix.
Edited by Wirerat - 5/17/15 at 4:17am
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post #7 of 8
Thread Starter 
Actually turning on the systems won't be a problem. Each of the pc's will have its own power supply. I was
Quote:
Originally Posted by Wirerat View Post

I suggest you run dual pumps in the single loop. That way you get better flow when both systems are on and more heat is present.


Then simply wire one pump to each psu.

The alternative of powering the pump of the psu off the system that is active will require a switch or relay to be setup so that power from each psu does not mix.

Thanks for the advice. I'm going to try to set up a SPDT relay switch. I was thinking of this one:
Processed By eBay with ImageMagick, z1.1.0. ||B2

I'll use one switch for the 12v line and the other for the ground. Connect the normally open connection to my main psu and connect the normally closed connection and the coil to the secondary psu. That way the liquid loop should switch from the main to the secondary psu whenever the second pc is turned on. I'll have to make a few modifications to that switch to remove the led's, resistors and transistors, and bypass where it was back to the negative but hopefully it will work out.
post #8 of 8
How many blocks, res, and rads are you going to have in this setup? I know you are interested in running the pump with the multiple psu, but that one loop might be better off as two loops. Post what you plan on cooling in terms of blocks. 8+ blocks, 10+ feet tubing, 20+ angled fittings, 4+ rads, 2+ reservoir on a single loop might not be the optimal solution unless you are running dual pump combos at multiple points in your loop.

These links are good for reference.
pump planning
pump planning 2
Edited by ALT F4 - 5/19/15 at 8:10pm
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