Overclock.net › Forums › Cooling › Water Cooling › Is there a limit to the length of a loop?
New Posts  All Forums:Forum Nav:

Is there a limit to the length of a loop?

post #1 of 13
Thread Starter 
I wanted to know how to figure out if a 655 would work if I remotely mounted the rads about 6 feet away from the PC. I'm thinking about 15 feet of travel in the entire loop, but I don't know what I should be looking for.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.7GHz 1.34v Asus P8Z77-V Pro Gigabyte Windforce 7950 8GB Crucial 1866 
Hard DriveOptical DriveOSMonitor
Crucial m4 128 GB Samsung BluRay Windows 7 64 Samsung S27A950D 
KeyboardPowerCaseMouse
Logitech G15 Seasonic 760-X Corsair 800D Logitech G9 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.7GHz 1.34v Asus P8Z77-V Pro Gigabyte Windforce 7950 8GB Crucial 1866 
Hard DriveOptical DriveOSMonitor
Crucial m4 128 GB Samsung BluRay Windows 7 64 Samsung S27A950D 
KeyboardPowerCaseMouse
Logitech G15 Seasonic 760-X Corsair 800D Logitech G9 
  hide details  
Reply
post #2 of 13
From my old aquarium days, 10ft of horizontal tubing/piping runs adds a vertical foot of head pressure, so when checking out the specs of the pump, keep that in mind. you'll have 10ft approximately of excess tubing that wouldn't have otherwise been in the loop, so may consider it adding another foot of head pressure on it, and then check out the pressure performance chart for your pump.
post #3 of 13
Not sure, but i think a 655 with a topper pushes pretty decent GPM.
post #4 of 13
the MAX head pressure in your system pump / 2 = max length in tubing one should use.

So a D5 = Maximum head 10 ft (3.1 m)

That means no more then 5 feet of tubing.. 7 feet if ur using really low restriction EQ.

Do not pass 10 feet.

If you need more then 10 feet, you need a second D5 so you can double the head pressure, from 10 -> 20.

Which would give you 10 feet of tubing to play with, and another 10 feet of restriction in eq blocks.
Edited by NaeKuh - 6/15/11 at 10:50am
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
post #5 of 13
Max length as in feet, meters, inches? What.... e-e
 
Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
CPUMotherboardGraphicsRAM
3770k @ 4.5 1.312 load Zotac Z77 ITX Wifi GTX 1070 Gaming 2126/2249 w/ Hybrid cooler TridentX 16GB 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
OSMonitorKeyboardPower
Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
CPURAMHard DriveHard Drive
C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
OSMonitorKeyboardMouse
OS X 10.0 1280x800 Built-in Trackpad 
Audio
Built-in 
  hide details  
Reply
 
Gsvlip Dudyrm
(15 items)
 
Oda'maksv
(9 items)
 
CPUMotherboardGraphicsRAM
3770k @ 4.5 1.312 load Zotac Z77 ITX Wifi GTX 1070 Gaming 2126/2249 w/ Hybrid cooler TridentX 16GB 2400MHz 
Hard DriveHard DriveCoolingCooling
Samsung 850 Pro 1TB Seagate 2TB H105 EVGA Hybrid GPU cooler 
OSMonitorKeyboardPower
Windows 10 Asus MG279Q - 24" 144Hz 1080p Filco Majestic II w/ Cherry Reds Seasonic X 760W 
CaseMouseMouse PadAudio
Bitfelix Prodigy Logitech G400 Razer Goliath AKG A701 
AudioAudio
JDS Labs Objective 2 JDS Labs ODAC 
CPUMotherboardGraphicsRAM
Core i5 750 3.99 (190x21) 1.376v Load ASUS P7P55d-E Pro GTX 670 FTW <- Poor overclocker :( 8GB (4x2GB) G.Skill DDR3 1600 
Hard DriveHard DriveOptical DriveOS
Samsung 830 Evo 128GB 2x 2TB  Some DVD drive OSX 10.10.4 
MonitorPowerCaseMouse
Asus 1080P Crap TX 750 HAF 922 G400s 
Mouse PadOther
Apple Keyboard Xbox One controler 
CPURAMHard DriveHard Drive
C2D 2,26GHz under volted @ .978v 8GB  Crucial M4 64GB SSD 500GB Scorpio Black 
OSMonitorKeyboardMouse
OS X 10.0 1280x800 Built-in Trackpad 
Audio
Built-in 
  hide details  
Reply
post #6 of 13
Quote:
Originally Posted by Lord Xeb View Post
Max length as in feet, meters, inches? What.... e-e
lol yeah i figured it was kinda confusing..

to use it in the units your pump displays..

some use Meters, some use feet.

They thing is head pressure = works out restrictions.
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
post #7 of 13
Quote:
Originally Posted by NaeKuh View Post
the MAX head pressure in your system pump / 2 = max length in tubing one should use.

So a D5 = Maximum head 10 ft (3.1 m)

That means no more then 5 feet of tubing.. 7 feet if ur using really low restriction EQ.

Do not pass 10 feet.

If you need more then 10 feet, you need a second D5 so you can double the head pressure, from 10 -> 20.

Which would give you 10 feet of tubing to play with, and another 10 feet of restriction in eq blocks.
Based on Martin's numbers, 10 feet of 7/16" ID tubing incurs a pressure drop of about 1 psi at 2 GPM.... your rule of thumb has a crazy amount of pad in it.

The difference between 10 and 20 feet of tubing in a system with one CPU block, a low-restriction FC GPU block, triple 120mm radiator, and a D5 on setting 5 would be on the order of 0.1-0.2 GPM. In other words, not a significant enough impact on flowrate to matter above 1GPM.
post #8 of 13
actually alex... his statement involves height..

which is why i said that number.

martin's values are only good for a level plane... not an incline on the pump.

and yes i know its closed loop, but im looking out on his bleeding aspect in that number.

any less, and your going to have a hard time pushing out bubbles.


MMM.. i had people try out 15 feet in tubing + rad + blocks... they were having a hard time getting 1gpm of flow with a 5 feet incline.
Edited by NaeKuh - 6/15/11 at 11:57am
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
Nadeshiko
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 990X eVGA Classified E759 eVGA GTX 580 x 2 + GTX 550Ti Corsair Dominators 
Hard DriveMonitorPowerCase
Intel G2 x 3 in R0 + C300 256GB - Gaming Gateway 2485W x 2 + Asus 27 LED center AX1200 MM + Pedistool 
  hide details  
Reply
post #9 of 13
would help to make the 6 ft run w/ a larger size ID tube.
post #10 of 13
Thread Starter 
Thanks for the info.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.7GHz 1.34v Asus P8Z77-V Pro Gigabyte Windforce 7950 8GB Crucial 1866 
Hard DriveOptical DriveOSMonitor
Crucial m4 128 GB Samsung BluRay Windows 7 64 Samsung S27A950D 
KeyboardPowerCaseMouse
Logitech G15 Seasonic 760-X Corsair 800D Logitech G9 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 2500k 4.7GHz 1.34v Asus P8Z77-V Pro Gigabyte Windforce 7950 8GB Crucial 1866 
Hard DriveOptical DriveOSMonitor
Crucial m4 128 GB Samsung BluRay Windows 7 64 Samsung S27A950D 
KeyboardPowerCaseMouse
Logitech G15 Seasonic 760-X Corsair 800D Logitech G9 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Is there a limit to the length of a loop?