Res issues.

Butcher · 01-19-2004, 11:17 AM

I'm having a couple of problems with my res. It's a rectangular Al tank, about 9"x5"x3". The inlet/outlet are in one of the short walls.

First problem - I have to run with a lid on because the incoming water jets right across the tank and hit's the back wall which makes it spray up and out. It also makes it quite noisy with the sound of sloshing water (that's the main issue, I tend to run sealed anyway).

Second problem - the pump sucks on the outlet with enough pressure to cause small vortexes to form in the tank which then suck a small amount of air into the tubing.

So any suggestions on modifications I can make to the tank or maybe even a new tank design which doesn't suffer from these issues?

AngryAlpaca · 01-19-2004, 08:49 PM

Where is the barb on the reservoir? If it's on the end, and the inlet to the pump is on the other end, you won't have that vortex. You also won't hear sloshing sounds, and, if you do, you should fill the reservoir fuller and make it longer.

Butcher · 01-20-2004, 06:35 AM

The inlet and outlet are in the same wall (note pump isn't submerged), having them opposite wouldn't help that much I think as the jet of water disperses somewhat before hitting the opposite wall.

The res is about 90-95% full as it is, I can't really fill it any fuller. Making it longer would mean an entirely new res... I'd rather not do that if possible.

heller · 01-20-2004, 07:38 AM

I seem to recall other experiences with pumps creating a vortex in the res.

One solution i remember was to use a chunk of foam material type substance that would let the water flow through fast enough but not set up an eddy.

Zogthetroll · 01-20-2004, 09:55 AM

something you might consider for the sloshing problem, make some sort of soft deflector plate (maybe a piece of rubber) to direct the water jet down into the center of the tank. not sure how well that would work, but its an idea.

Butcher · 01-20-2004, 10:20 AM

I weas considering a piece of Al near the surface to help the sloshing actually, I'm not sure if that would just transfer the issue to another part of the tank though.

Foam material for eddy, I'll try putting some of the foam from the pump filter (which is currently unused as it's running inline) over my outlet.

Groth · 01-20-2004, 10:46 AM

On your inlet, you can attach a piece of pipe/tube/hose with holes along its length and its far end capped. That'll distribute the incoming water and disperse the energy without splashing.

Like everybody has said, filter foam will work for the vortex. I've also see baffles, bundles of small tubes (flow straightener), and the same sort of multi-hole diffuser pipe I've suggested for the inlet.

Gooserider · 01-21-2004, 06:06 PM

I would agree, you basically need to break up the jet. Possibly a deflector of some sort might help. Another thought might be to try one of those plastic pot scrubbers that looks like a bunch of curled up plastic like a big scouring pad. I'd think that would break up the jet flow quite effectively but not add much restriction.

Gooserider

Butcher · 01-21-2004, 08:28 PM

Well I fixed the vortex thing by slipping the filter foam from my pump around the outlet. It has a hole through the middle so it doesn;t affect flow much, but it seems to have stopped the vortexes forming.

V12|V12 · 01-22-2004, 09:37 PM

AH yes! A resevior question, my specialty! If you could post a pic or, my best alternative, an MS-Paint of the Res and problem, then I could prob help you find a solution!

Stiffler · 01-22-2004, 10:54 PM

Sorry to hijack this thread, but V12, if you could contact me on aim: gstifflerd that would be great. I have quite a few questions for you...

Butcher · 01-23-2004, 05:02 AM

Quote:

Originally Posted by V12|V12

AH yes! A resevior question, my specialty! If you could post a pic or, my best alternative, an MS-Paint of the Res and problem, then I could prob help you find a solution!

No digicam, I'll knock a rough diagram together though.

01-19-2004, 11:17 AM	#1
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Res issues. I'm having a couple of problems with my res. It's a rectangular Al tank, about 9"x5"x3". The inlet/outlet are in one of the short walls. First problem - I have to run with a lid on because the incoming water jets right across the tank and hit's the back wall which makes it spray up and out. It also makes it quite noisy with the sound of sloshing water (that's the main issue, I tend to run sealed anyway). Second problem - the pump sucks on the outlet with enough pressure to cause small vortexes to form in the tank which then suck a small amount of air into the tubing. So any suggestions on modifications I can make to the tank or maybe even a new tank design which doesn't suffer from these issues?

01-21-2004, 06:06 PM	#8
Gooserider Cooling Savant Join Date: Jun 2003 Location: North Billerica, MA, USA Posts: 451	I would agree, you basically need to break up the jet. Possibly a deflector of some sort might help. Another thought might be to try one of those plastic pot scrubbers that looks like a bunch of curled up plastic like a big scouring pad. I'd think that would break up the jet flow quite effectively but not add much restriction. Gooserider __________________ Designing system, will have Tyan S2468UGN Dual Athlon MOBO, SCSI HDDS, other goodies. Will run LINUX only. Want to have silent running, minimal fans, and water cooled. Probably not OC'c

01-22-2004, 09:37 PM	#10
V12\|V12 Cooling Savant Join Date: May 2002 Location: Ohio-State! <--Money Hussle! SUCKS Posts: 292	AH yes! A resevior question, my specialty! If you could post a pic or, my best alternative, an MS-Paint of the Res and problem, then I could prob help you find a solution! __________________ XP 1600+ AGOIA-Y (GreenLabel, UNLOCKED!@/ NF7-S 2.0/ PC 2700 DDR 10.5*172FSB(1806/ 1991 high), Vcore 1.792...@84.95Watts --86' Chevette Heater Core --1/2" Vinyl tubes --Via1300-Stealth Mod(QUIET!) ---Home made copper-tube block ---PVC small internal res

01-19-2004, 08:49 PM	#2
AngryAlpaca Cooling Savant Join Date: Jan 2004 Location: Alberta Posts: 631	Where is the barb on the reservoir? If it's on the end, and the inlet to the pump is on the other end, you won't have that vortex. You also won't hear sloshing sounds, and, if you do, you should fill the reservoir fuller and make it longer.

01-20-2004, 06:35 AM	#3
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	The inlet and outlet are in the same wall (note pump isn't submerged), having them opposite wouldn't help that much I think as the jet of water disperses somewhat before hitting the opposite wall. The res is about 90-95% full as it is, I can't really fill it any fuller. Making it longer would mean an entirely new res... I'd rather not do that if possible.

01-20-2004, 07:38 AM	#4
heller Cooling Neophyte Join Date: Feb 2003 Location: perth aus Posts: 1	I seem to recall other experiences with pumps creating a vortex in the res. One solution i remember was to use a chunk of foam material type substance that would let the water flow through fast enough but not set up an eddy.

01-20-2004, 09:55 AM	#5
Zogthetroll Cooling Savant Join Date: Mar 2003 Location: Ohio, U.S.A. Posts: 177	something you might consider for the sloshing problem, make some sort of soft deflector plate (maybe a piece of rubber) to direct the water jet down into the center of the tank. not sure how well that would work, but its an idea.

01-20-2004, 10:20 AM	#6
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	I weas considering a piece of Al near the surface to help the sloshing actually, I'm not sure if that would just transfer the issue to another part of the tank though. Foam material for eddy, I'll try putting some of the foam from the pump filter (which is currently unused as it's running inline) over my outlet.

01-20-2004, 10:46 AM	#7
Groth Cooling Savant Join Date: Mar 2003 Location: MO Posts: 781	On your inlet, you can attach a piece of pipe/tube/hose with holes along its length and its far end capped. That'll distribute the incoming water and disperse the energy without splashing. Like everybody has said, filter foam will work for the vortex. I've also see baffles, bundles of small tubes (flow straightener), and the same sort of multi-hole diffuser pipe I've suggested for the inlet.

01-21-2004, 08:28 PM	#9
Butcher Thermophile Join Date: May 2001 Location: UK Posts: 1,064	Well I fixed the vortex thing by slipping the filter foam from my pump around the outlet. It has a hole through the middle so it doesn;t affect flow much, but it seems to have stopped the vortexes forming.

01-22-2004, 10:54 PM	#11
Stiffler Cooling Neophyte Join Date: Aug 2003 Location: Monmouth, OR Posts: 65	Sorry to hijack this thread, but V12, if you could contact me on aim: gstifflerd that would be great. I have quite a few questions for you...

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