Overclock.net › Forums › Cooling › Water Cooling › Flow Rate Estimator Spreadsheet V1.7
New Posts  All Forums:Forum Nav:

Flow Rate Estimator Spreadsheet V1.7 - Page 8

post #71 of 125
Yeah I always put the gauge right after the pump as close as I can get it....But at 5psi right after the pump with the V6 and 1-18W DDC I was getting 1.4 gpm actual loop flow measured after all components...But this guage is only rated at +-2% mid-gauge accuracy..Yeah the head is consumed in the loop right at the outlet its the highest and right before the inlet suction side it's the lowest, or the most flow, but lowest pressure. .Yeah those digital are nice, they have some nice flow meters there for $150 and up to...Hey a psi gauge is great you can tell if you loop is getting plugged up, the pressure will rise...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
post #72 of 125
Thread Starter 
Quote:
Originally Posted by ira-k View Post
Yeah I always put the gauge right after the pump as close as I can get it....But at 5psi right after the pump with the V6 and 1-18W DDC I was getting 1.4 gpm actual loop flow measured after all components...But this guage is only rated at +-2% mid-gauge accuracy..Yeah the head is consumed in the loop right at the outlet its the highest and right before the inlet suction side it's the lowest, or the most flow, but lowest pressure. .Yeah those digital are nice, they have some nice flow meters there for $150 and up to...Hey a psi gauge is great you can tell if you loop is getting plugged up, the pressure will rise...
Ah ok, I must be off looking at the curve, the guage itself will have some pressure drop...maybe that's the difference. I started subtracting that out in my pressure drop tests, but I'm thinking most don't worry about it.

Anyhow the flow rate is the same all the way around the loop, different velocities(depending on cross sectional area) and different pressure (energy), but flow rate in terms of GPM is the same all the way around.

Yeah a guage is a nice indicator of plugging especially these darn filter like fuzions....seems every time I open mine up I have something to clean out...
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
post #73 of 125
Quote:
Originally Posted by Martinm210 View Post
Ah ok, I must be off looking at the curve, the guage itself will have some pressure drop...maybe that's the difference. I started subtracting that out in my pressure drop tests, but I'm thinking most don't worry about it.

Anyhow the flow rate is the same all the way around the loop, different velocities(depending on cross sectional area) and different pressure (energy), but flow rate in terms of GPM is the same all the way around.

Yeah a guage is a nice indicator of plugging especially these darn filter like fuzions....seems every time I open mine up I have something to clean out...


EDIT: You know what Martin the 1.5 gpm I measured as actual flow through the loop was a whole different set-up with a 18W DDC and a Radiical Turbo-Top on it, I just remembered that, it had a different rad in it to, its been a while......

Yeah your right what I was trying to say is it has the most suction and lowest head and pressure at the in-let side...


But I think I'm right about being able to take a pressure reading right after the pump for a loop since this is a closed loop system and should stay pressurized....But the main reason I put one in is to tell if my jet barbs are getting plugged up and if my pump is working properly...Something I've noticed is the the pressure will drop over a period of several days,when I take the res plug out the pressure will rise back up again..Put the plug back in and its good for a few more days...Must be getting some kind of cavitation or something, just wonder if other pumps are doing this also...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
post #74 of 125
Thread Starter 
Ahh, I got it.

That's interesting with the plug and pressure buildup. I've just got the T-lines and I do notice my water level drop when the system starts by a couple of inches, and I always assumed it was just due to the tubing slightly expanding. But my T lines are not as air tight as a reservoir plug so any pressure is relieved.

I wonder if the pressure buildup is a temperature thing. Maybe if you cap it off when it's cold, it gains some pressure from expansion as it warms up
?

A guage would be a nice tool for plugging or if you lost a pump, the only indication I have now is my water level drop when the computer fires up. That's why I have been thinging about building a three bay reservoir with a window up front so I can visually see flow rate occuring real easy. I have a sheet of 1/4" acrylic sitting on my Table saw, just need to get busy on it. I also picked up a small set of taps at Sears the other day, but they didn't have much on Pipe Taps. Might just have to grab one of those $9 3/8" NPT taps off ebay for that.

Do you know what Tap "Name" is right for G1/4" I know it's an NPSM thread and I think 18 or 19 TPI, so I'm thinking it just a straight tap of some size?
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
post #75 of 125
Quote:
Originally Posted by Martinm210 View Post
Ahh, I got it.

That's interesting with the plug and pressure buildup. I've just got the T-lines and I do notice my water level drop when the system starts by a couple of inches, and I always assumed it was just due to the tubing slightly expanding. But my T lines are not as air tight as a reservoir plug so any pressure is relieved.

I wonder if the pressure buildup is a temperature thing. Maybe if you cap it off when it's cold, it gains some pressure from expansion as it warms up
?

A guage would be a nice tool for plugging or if you lost a pump, the only indication I have now is my water level drop when the computer fires up. That's why I have been thinging about building a three bay reservoir with a window up front so I can visually see flow rate occuring real easy. I have a sheet of 1/4" acrylic sitting on my Table saw, just need to get busy on it. I also picked up a small set of taps at Sears the other day, but they didn't have much on Pipe Taps. Might just have to grab one of those $9 3/8" NPT taps off ebay for that.

Do you know what Tap "Name" is right for G1/4" I know it's an NPSM thread and I think 18 or 19 TPI, so I'm thinking it just a straight tap of some size?


Yeah that could be it, my loop is pretty well air tight, when I stop it the pressure gauge will go down to 2psi and stay there...So thats probably it...


I used a 1/4" BSP 19 TPI tap and a 11.8mm drill bit to get G 1/4....CrazyJoe gave me this E-Bay link a while back really decent prices on most of it...eBay Store - Bits and Blades
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
post #76 of 125
Thread Starter 
FYI
I have a couple of new toys on the way:
Dwyer digital manometer 0-200 inches H20 with pressure to .1inch resolution:


And a couple of different flow rate meters:
Digiflow 8000T digital flow meter
.3-2 GPM


And a King Instruments flow rate meter
0-5GPM with resolution to .1 GPM


I had to retire my outdoor manometers, so I've been looking for a permanent and much more compact indoor solution. Having a flow rate meter will be much much faster too, no more waiting 5 mintues with a stopwatch to record one flow rate.
I'll be doing lots of testing soon...
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
post #77 of 125
Looks nice....How restrictive is that Digi-flow meter I like that...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
post #78 of 125
Thread Starter 
Quote:
Originally Posted by ira-k View Post
Looks nice....How restrictive is that Digi-flow meter I like that...
I'm not sure, bought it on ebay. Not sure I trust the accuracy, but I can pressure drop test it when I get everything. That's why I also bought the King flowmeter, it may be more reliable, and it does have a larger range.

http://cgi.ebay.com/Digiflow-8000T-R...QQcmdZViewItem

It uses 3/8" NPT threads, so you could put 5/8" fittings on it.
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
3930K ASrock X79 Ext7 Evga GTX570 CORSAIR Vengeance 16GB 
Hard DriveOptical DriveOSMonitor
Phoenix SSD+2TB Seagate drives ASUS DVD-RW combo Windows 7 28" Hanns-G HZ281 
KeyboardPowerCaseMouse
MS Natural Corsair TX650 Danger Den Torture Rack Logitech MX518 
Mouse Pad
Desk 
  hide details  
Reply
post #79 of 125
Very Very Nice !

Looking forward to the data !

( my outdoor setup has since been moved to the garage ... scads warmer in there ... down to 24F tonight ! ACK ! )
post #80 of 125
Thanks......I might have to get one and try it out for that price...I was expecting it to to be a couple hundred bux....I could always just cut it in then take it back after I measure my flow...


EDIT: HaHa Joe...Its supposed to hit 32F here tonight, last night it was 67F...
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
E8600 4545Mhz*9 w/1.29V DFI DK P45 XFX 8800 GS D9GKX & D9GMH 
Hard DriveOptical DriveOSPower
2x Seagate 160 Perp. RD-1 2x Asus Vista Premium Corsair HX 620 
Case
Open Bench 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Flow Rate Estimator Spreadsheet V1.7