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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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03-23-2005, 06:59 PM | #1 |
Cooling Neophyte
Join Date: Apr 2003
Location: Ottawa,ON
Posts: 46
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Syn Jets!!!
I hope this belongs here........ A link to "Synthetic Jets"
http://gtresearchnews.gatech.edu/new...se/synjets.htm Mount on a heatercore is my first thought.... Intercooler type tech.? Maybe I should just get a spray bottle for now and mist my heatercore! What do you guys think of this tech? Bernie. |
03-24-2005, 09:24 AM | #2 |
Cooling Neophyte
Join Date: Dec 2002
Location: Twin Cities
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Boy, if that isn't food for thought!
Imagine getting your hands on a piezo-electric transducer from say, an old ultrasonic parts cleaner and integrating it into a water block. With a fairly slow lateral flow rate through the block, the water as it passes between the transducer and the cups/pins/whatever shape lends well, would be excited both towards and away from them. I think you get the drift. Lots of parameters to work out and hoping the transducer wouldn't dump too much heat into the water, but just imagine... Hoot
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DFI LP UT NF4 Ultra-D 7.04-3 Bios A64 3700+ San Diego 11x257 (2827 Mhz) @ 1.57Vcore 2x1Gb Crucial Ballistix 7:6 (300 Mhz) 3-3-3-8-1T @ 2.77V Connect 3D x850xt 620/625 2x WD 36GB Raptors in Raid0 DIY Jet Impingement WB on CPU / Pipecap WB on GPU Shrouded Camaro Heater Core / Swiftech MCP655 Pump Antec P-160 Tower / Seasonic S12 600W PSU MAXIM 6658 Thermal Diode Reader Moderator at OCForums |
03-24-2005, 10:05 AM | #3 |
Cooling Neophyte
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Interesting Hoot..........
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03-24-2005, 10:14 AM | #4 |
CoolingWorks Tech Guy Formerly "Unregistered"
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I have discussed this,
can't get any enthausam from the pros for the ultrasonics coupled to the CPU freq, power, dedicated hi freq psu (25k to 70k ?) and the transducers are NOT cheap |
03-24-2005, 02:20 PM | #5 |
Thermophile
Join Date: Sep 2002
Location: Charlotte, NC
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Very interesting.
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I have a nice computer. |
03-24-2005, 02:27 PM | #6 |
Cooling Savant
Join Date: May 2003
Location: Okotoks, A.B. Canada
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Would it affect the CPU any?
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03-24-2005, 04:21 PM | #7 |
Cooling Savant
Join Date: Dec 2002
Location: Houston, TX, USA
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“We have so far been able to cool about 420 watts per square centimeter, and ultimately expect to increase that to 1,000 watts per square centimeter.”
Is it just me, or is this meaningless? Without knowing at what delta T to ambient they do this, these numbers mean nothing... |
03-24-2005, 04:57 PM | #8 | |
Cooling Savant
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Quote:
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03-24-2005, 04:59 PM | #9 | |
Cooling Savant
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Location: FL
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Quote:
I would guess you have limited results from such a system as it is still limited to the water temps. If your using a bunch of power to remove heat most people would expect sub-ambient similar to peltier. Even with peltiers swiftech has little market for them. |
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03-24-2005, 06:56 PM | #10 |
Put up or Shut Up
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Location: Spokane WA
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I tried to figure out a way to shake the water inside the block before. Never thought about using ultrasonics. Interesting.
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03-24-2005, 07:05 PM | #11 |
CoolingWorks Tech Guy Formerly "Unregistered"
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think on the TIM joint a while
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03-24-2005, 09:52 PM | #12 |
Cooling Neophyte
Join Date: Dec 2002
Location: Twin Cities
Posts: 67
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Given the mass of a copper base (body at rest), would the motion transfer through to the TIM making it lap the core/face junction, or walk out from in between?
Hoot
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03-25-2005, 02:36 AM | #13 |
Cooling Neophyte
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Location: Texas, USA
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unregistered:
Why would transducers be expensive? You can buy all kinds of cheap transducers. Drive them with the signal generator of your choice. It's not brain science to make a plate vibrate using the peizoelectric effect. It's easy to drive stuff like that with a simple 555 circuit. You could build that whole device for under $20. A good idea might be to put the transducer inside the top of the water block instead of "on" the water block. You want to shake the water, not the metal water block itself! Of cource, routing your wires out of the water block might be fun. Not sure I buy the idea that it makes heat transfer better, but it could be a cheap and easy experiment for someone who plays with custom water blocks. Also, it would be fairly easy to use transducers to push air through the radiator. But again, I don't think it really helps transfer heat. But I'm not a thermo-dynamasist either. Also, you might check out Electrostatic Cooling. There is also an abstract at ECD. And here is Cool Chips PLC proclaiming to use similar technology (Thermotunneling) in a device that looks like a peltier but isn't. Anyone else got some weird science for us? |
03-25-2005, 04:54 AM | #14 |
Cooling Neophyte
Join Date: Jun 2003
Location: Aalborg, Denmark
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Interesting indeed...
And hey, if you got a transducer with the right frequency you wouldn't have to clean your block again |
03-25-2005, 07:00 AM | #15 |
Cooling Neophyte
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Location: Twin Cities
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I should have been more clear in my diagram that I was pondering a block with the transducer inside of it, not on the outside. As for the electrostatic idea, that is interesting also, but it would be hard, if not impossible to implement it in a water cooled environment since it would be near impossible to find a cooling solution with a high enough dielectric constant while maintaining the positive cooling attributes associated with water. In both situations, the question of impact upon the electronic functionality of the CPU while either being bombarded with piezoelectric induced energy, or high voltage fields in the case of the electrostatic approach, remains to be assessed.
Hoot
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DFI LP UT NF4 Ultra-D 7.04-3 Bios A64 3700+ San Diego 11x257 (2827 Mhz) @ 1.57Vcore 2x1Gb Crucial Ballistix 7:6 (300 Mhz) 3-3-3-8-1T @ 2.77V Connect 3D x850xt 620/625 2x WD 36GB Raptors in Raid0 DIY Jet Impingement WB on CPU / Pipecap WB on GPU Shrouded Camaro Heater Core / Swiftech MCP655 Pump Antec P-160 Tower / Seasonic S12 600W PSU MAXIM 6658 Thermal Diode Reader Moderator at OCForums |
03-25-2005, 03:48 PM | #16 |
Cooling Neophyte
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Hoot:
Obviously you couldn't use the electrostatic cooling inside the system in any way. I was thinking someone could use it on the radiator, mounted outside the case. It would be simple to make a fine wire mesh that is negativly charged and place it an inch away from the grounded radiator. This would cause a fine spray of negitive electrons that would hit the grounded radiator. If it really helps to exchange heat it might be worth a try. Since the radiator is grounded it shouldn't introduce any ions into the system. Although, if you start smelling a sweet musky odor you might want to worry about the ozone generator you just created. |
03-27-2005, 06:07 PM | #17 | |
Put up or Shut Up
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Quote:
Probably a lot I am missing here though. |
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03-28-2005, 09:21 AM | #18 |
CoolingWorks Tech Guy Formerly "Unregistered"
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the rheological properties of the TIM are of importance throughout the service life of the joint,
what is going to happen re the consolidation due to the ultrasonics ? and understand that the transducer must be coupled to the fluid - not the wb Last edited by BillA; 03-28-2005 at 09:28 AM. |
03-28-2005, 06:12 PM | #19 | |
Cooling Neophyte
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Quote:
If I were to post only what I know.... I'd forget how to type!! good reading tho! |
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03-28-2005, 07:25 PM | #20 | |
Cooling Savant
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Location: Orlando, Florida
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Quote:
Turbulance, to a point, equals cooling performance. This is part of the reason jet impignation blocks work so well. Imagine being able to achieve large amounts of turbulance while having a relatively free flowing block. There is potential here. |
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