storm flow help for a WC noob

tritonx · 10-31-2005, 12:44 AM

I'm doing my first WC and so I started my WC loop small and added components one at a time.. added the reservoir and aquaxtreme 50Z pump, flow looks .. insane. System uses 3/8" ID tubing.

Added the storm CPU block to the loop, and now the flow is slightly more than a dribble of water to the reservoir.. is this normal? Or, have I done something wrong?

Thanks!

Long Haired Git · 10-31-2005, 12:56 AM

It MIGHT be normal.
You can measure the flow rate by timing how long it takes to fill a container of known volume.
The table here:
http://www.systemcooling.com/forums/...t=3685&p=31373

would suggest (bit of rough math in my head) between 2 and 3 LPM.

Keep in mind the storm design uses the water very effectively, and thus its better to have 3 LPM being effective than 6+ LPM in the old "channel in a block of copper" blocks.

I'd model it in my approximator but you use 3/8" tubing and I still don't model that right. Sigh.

BillA · 10-31-2005, 08:22 AM

a dribble ??
middle plate reversed wrt top

bobo5195 · 10-31-2005, 10:57 AM

3/8 tubing not modeled right huh????

Darcy friction factor????

Long Haired Git · 10-31-2005, 04:26 PM

Quote:

Originally Posted by unregistered

a dribble ??
middle plate reversed wrt top

Yeh, or running it backwards? But then 3 LPM or so can look like a dribble to some people when they've seen their pump run unrestricted.

We'll have to let tritonx quantify a "dribble"...

Quote:

Originally Posted by bobo5195

3/8 tubing not modeled right huh???? Darcy friction factor????

I don't use fancy smancy models in my rig: all I do is take published PQ graphs and turn them into a quadratic equation. I have the equations for 3/8" tubing, but the issue is that most tests of a block/rad/pump only do so with one barb size on. So, my model happily handles the head of a storm block, and the head of 3/8" tubing, but fails to take into consideration the impact of replacing 1/2" barbs with 3/8" barbs on the storm.

tritonx · 10-31-2005, 08:55 PM

I may have the block reversed. let me take a quick look; i had to take apart the storm block because i over-tightened my first nylon connector and it tore (glad i bought extras..). I will also perform the fill-rate test to see what the flow is like un-impeded.

The "dribble" is .. just enough water flow so that it is not dripping; the flow is about 1/3 cm" in width and falling straight down (little/no velocity).

Thanks for the suggestions all!

Long Haired Git · 11-01-2005, 02:05 AM

Doesn't sound enough, but I want the numbers anyway.

AngryAlpaca · 11-01-2005, 08:57 AM

Perhaps you could explain a method that he can use to get the numbers?

tritonx · 11-01-2005, 05:16 PM

Quote:

Originally Posted by AngryAlpaca

Perhaps you could explain a method that he can use to get the numbers?

I had the copper plate rotated 180 degrees so that the outbound head was not aligned to the copper indentation on the water block.

Now you've all got me interested, i will run some simple flow tests (not sure if it's of interest).. 1st will be lpm calc (Based on how fast it fills up 1L) with just reservoir to pump (6 inches distance) and second will be reservoir to pump to block (6 inches again)..

billbartuska · 11-01-2005, 07:11 PM

Quote:

Originally Posted by tritonx

I had the copper plate rotated 180 degrees so that the outbound head was not aligned to the copper indentation on the water block.

Now you've all got me interested, i will run some simple flow tests (not sure if it's of interest).. 1st will be lpm calc (Based on how fast it fills up 1L) with just reservoir to pump (6 inches distance) and second will be reservoir to pump to block (6 inches again)..

Height is important in your testing, Water going in at the same height (above the floor for instance) as the water coming out. That will eliminate pump head considerations in comparing your tests to each other. If the pump has to "lift" the water farther in one test vs another that will skew the results. A small point, but something to consider

tritonx · 11-02-2005, 04:02 AM

Good advice.. for the test, i used one of my kitchen double-sinks as the reservoir and a blender as my measuring container that i had my cohort keep at about the same level in the non-filled section sink.

Anyways, it took 7.5 seconds on average to fill 1 liter, and 13 seconds to fill 1 liter after going through the storm block. i had to use 12 inches instead of 6 inches for the input/out lines in order for everything to reach.

Quote:

Originally Posted by billbartuska

Height is important in your testing, Water going in at the same height (above the floor for instance) as the water coming out. That will eliminate pump head considerations in comparing your tests to each other. If the pump has to "lift" the water farther in one test vs another that will skew the results. A small point, but something to consider

Long Haired Git · 11-02-2005, 04:28 AM

13 secs per litre is over 4.5 LPM, and hence good enough.
Sounds like problem solved.

tritonx · 11-02-2005, 01:21 PM

Quote:

Originally Posted by Long Haired Git

13 secs per litre is over 4.5 LPM, and hence good enough.
Sounds like problem solved.

thx all for your help! now i'm WC 1st grade graduate.

-tritonx

10-31-2005, 12:44 AM	#1
tritonx Cooling Neophyte Join Date: Oct 2005 Location: Bay Area Posts: 6	storm flow help for a WC noob I'm doing my first WC and so I started my WC loop small and added components one at a time.. added the reservoir and aquaxtreme 50Z pump, flow looks .. insane. System uses 3/8" ID tubing. Added the storm CPU block to the loop, and now the flow is slightly more than a dribble of water to the reservoir.. is this normal? Or, have I done something wrong? Thanks!

10-31-2005, 12:56 AM	#2
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	It MIGHT be normal. You can measure the flow rate by timing how long it takes to fill a container of known volume. The table here: http://www.systemcooling.com/forums/...t=3685&p=31373 would suggest (bit of rough math in my head) between 2 and 3 LPM. Keep in mind the storm design uses the water very effectively, and thus its better to have 3 LPM being effective than 6+ LPM in the old "channel in a block of copper" blocks. I'd model it in my approximator but you use 3/8" tubing and I still don't model that right. Sigh. __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)

10-31-2005, 08:55 PM	#6
tritonx Cooling Neophyte Join Date: Oct 2005 Location: Bay Area Posts: 6	Oops maybe reversed I may have the block reversed. let me take a quick look; i had to take apart the storm block because i over-tightened my first nylon connector and it tore (glad i bought extras..). I will also perform the fill-rate test to see what the flow is like un-impeded. The "dribble" is .. just enough water flow so that it is not dripping; the flow is about 1/3 cm" in width and falling straight down (little/no velocity). Thanks for the suggestions all!

11-01-2005, 02:05 AM	#7
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	Doesn't sound enough, but I want the numbers anyway. __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)

11-02-2005, 04:28 AM	#12
Long Haired Git Cooling Savant Join Date: Jan 2003 Location: Sydney, Oz Posts: 336	13 secs per litre is over 4.5 LPM, and hence good enough. Sounds like problem solved. __________________ Long Haired Git "Securing an environment of Windows platforms from abuse - external or internal - is akin to trying to install sprinklers in a fireworks factory where smoking on the job is permitted." (Prof. Gene Spafford) My Rig, in all its glory, can be seen best here AMD XP1600 @ 1530 Mhz \| Soyo Dragon + \| 256 Mb PC2700 DDRAM \| 2 x 40 Gb 7200rpm in Raid-0 \| Maze 2, eheim 1250, dual heater cores! \| Full specifications (PCDB)

10-31-2005, 08:22 AM	#3
BillA CoolingWorks Tech Guy Formerly "Unregistered" Join Date: Dec 2000 Location: Posts: 2,371.493,106 Posts: 4,440	a dribble ?? middle plate reversed wrt top

10-31-2005, 10:57 AM	#4
bobo5195 Cooling Savant Join Date: Aug 2005 Location: uk Posts: 400	3/8 tubing not modeled right huh???? Darcy friction factor????

11-01-2005, 08:57 AM	#8
AngryAlpaca Cooling Savant Join Date: Jan 2004 Location: Alberta Posts: 631	Perhaps you could explain a method that he can use to get the numbers?

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