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post #21 of 243 (permalink) Old 09-14-2015, 12:07 PM - Thread Starter
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ok fine I will explain it to you.
fist read the instruction for that mechanical flow meter that you used for testing and calibration of your other flow meter.
it states clearly in the instructions that the size of tubing piped to it should be from 3/4in ID to 1in ID tubing, if you had done that the flow rate reported by that mechanical flow meter would be half of what it is now.
I work on million dollar machines with mechanical flow meters like the one that you have, I have to look at them every day, and If I had done what you did, by piping 3/8ID to 1/2ID tubing to that kind of flow meter, I would be fired, or at the very least written up for it.
does that clear every thing up for you, the fact that you calibrated you other flow meters to that skewed build not designed for the flow meter you are using, this is your issue, and why your reported flow rates are twice as fast as they should be..
I would suggest testing your flow meter with a real world test of how much water your pump really puts out, compared to what your flow meter is reading, and you will see what I mean.

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post #22 of 243 (permalink) Old 09-15-2015, 12:17 AM
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You are just talking more and more nonsense now. The fittings on the flow meter simply won't allow tubing that large. It has 1/4" fittings built into it, so how exactly would 1 inch tubing help and where is this instruction to use tube that large ... Cause my manual doesn't say that.
Even if it could fit, it wouldn't change anything, certainly not by half. You are just flat making things up now and the fact you are criticizing an expensive King Instruments flow meter, (the key word there is instrument) while using a crappy koolance paddle flow meter is hilarious.

It's time to take this back to whatever noob forum it came from.

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post #23 of 243 (permalink) Old 09-15-2015, 05:44 AM
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Quote:
Originally Posted by toolmaker03 View Post

Now, the flow a pump can push through a single block is not the same as it can push through multiple blocks either in series or parallel.
If your pump can only push under 4lpm through a single block, it's clearly not an open high flow design or something is wrong with it. That would indicate well over 5 times the restriction of a modern EK gpu or Gpu block.

if you do not mind, I would like to see a pic of your flow meter and the flow rate on your loop, if you can do that for me, I would appreciate it?
I have never seen a EK CPU water block, or a EK full cover GPU block, that could run at a flow rate of 4.6LPM so this will be a good learning experience for me.

thanks in advance for your time.

I have 2 290xs in parallel with EK water blocks and a bunch of rads, as well as flowmeters on EACH block on the outlet, and then a ball valve after each flowmeter before the res.

I'm able to adjust the flow through each gpu individually, closing or limiting one gpu forces the water through the other. My loop order is

reservoir > mcp655b > koolance pmp500 > rad > rad > rad > rad > rad> gpu 1, with parallel tube straigt down to gpu 2, then each gpu has it's own seperate out line. Attached in this line is a 90* elbow, followed by a flow meter, folloewd by 6" tube, followed by ball valve and res.

These are both acetal / nickel blocks. With just the mcp655 running at setting 4, my flow is as follow:

gpu1 1.2lpm
gpu2 1.2lpm
total flow: 2.4lpm, due to the parallel nature of the block setup




If i close the valve on EITHER of the GPU's, the flow becomes 2.4LPM, sometimes bouncing down to 2.1LPM on my koolance flowmeter display adapters.

Temp wise, under load, both cards are in the high 40s. This is 24/7 use daily and is silent with just the D5 running, a combined flow of 2.4LPM total or 1.2LPM individually through the blocks.

But when performance is needed, i turn on the PMP500 to 50% speed, which is 3400rpm - temps IMMEDIATELY drop 4-5* celsius, and the flow rate spikes to 2.1, and 1.8 (as adjusted to by the valves), equaling a total of 3.9liters per minute, and this is repeated again by closing either of the ball valves on one of the gpus it forces the other one to go to 3.9LPM flow rate. So the blocks are pretty high flowing i'd say..

If I put the PMP500 to 100% pump speed, the flow rate becomes 3.1 and 2.7LPM respectively, which is effectively 5.8 liters per minute total flow in parallel, .

I dialed down the flow in GPU 1 to reduce it to 2.9LPM, the flow rate on the other increases to 2.9LPM, allowing 5.4 liters per minute PEAK in parallel flow,

and by completely closing the gpu 2 valve all flow is forced through gpu 1, which becomes essentially a serial loop by definition, the flow rate through the single EK full cover water block becomes a pretty high 5.1 liters per minute, a loss of 0.3LPM in flow by forcing the water through just one of the blocks.

These numbers correlate with the readings I'm getting from the MPS400 at the bottom of the res about 6 inches before pump inlet, and the FM-16 U shaped koolance flow meter after the pump in the pedestal.
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post #24 of 243 (permalink) Old 09-15-2015, 06:17 AM - Thread Starter
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cool, so you get what I have done here, I have a 3.6LPM going through my CPU, all the time, and a 3.0LPM through each of my GPU's, for a total flow rate of 9.6LPM for my loop, I do have two flow meters on my loop, one right after the CPU, and the other is right after the reservoir/pump, it took me 3 years of playing with the loop configuration, to get it to this point, but I finally got all of the restrictive parts out of my loop, allowing for my loop to run at almost full capacity for the components attached to it.

looks like you are well on your way to getting higher flow rates through that loop of yours yourself, if you have questions please ask, I would be glade to help, or even just explain some of the issues that I ran into along the way.

I do have a lots of pics of stuff that I have done, and never posted, because no one has asked for that info yet, so let me know.

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post #25 of 243 (permalink) Old 09-16-2015, 07:00 AM - Thread Starter
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http://imgur.com/a/WTC32
here is a look, at what the serial loop that ran at 1.2LPM looked like.

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post #26 of 243 (permalink) Old 09-17-2015, 05:48 AM - Thread Starter
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running cool this morning

http://imgur.com/x0DzrOx

even cooler
http://imgur.com/hhSNRjb
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post #27 of 243 (permalink) Old 09-24-2015, 07:08 AM - Thread Starter
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after a full day of gaming.
http://imgur.com/a/PGlO0

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post #28 of 243 (permalink) Old 09-27-2015, 07:11 AM - Thread Starter
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so when its 68F in my house it runs real cool
http://imgur.com/a/e1fXS
hWr7JND.jpg

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post #29 of 243 (permalink) Old 12-31-2015, 01:08 PM
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Great work, Now I can show guys who don't beleve me on having more waterflow = to better.
I also got the idea that I can put my radators in parrallel so they have less water resistance.
240MM thinn rad is more resitant than motherboard and ram waterblocks.

I have a waterflow meter and I know. 280MM or a thick rad has less water resitance and the meter goes flying even with all of those nb and ram water blocks on thumb.gif

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post #30 of 243 (permalink) Old 01-01-2016, 09:51 AM - Thread Starter
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your welcome, I did this because I thought it might help people with large water loop builds, be able to overcome the issue of low flow rates.
a large water loop build to me is anything more than a CPU block, a GPU block, and one large radiator for them.
once you start adding the second video card block, memory blocks, mother board blocks and the radiators to cool them, if the build is designed as a serial run, it can become rather restrictive, leaving one with a low flow rate for the water loop.

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Standard Water cooling to cool the TEC's 6 X 360mm radiators
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19 X CPU water blocks
Cooling
2 X GTX580 GPU water blocks
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