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Cooling Water temperature in WC

Discussion in 'Hardware' started by jjsyht, 20 Jun 2005.

  1. jjsyht

    jjsyht Hello, my name is yuri

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    I'm quite new to Wc and probably have some very false concepts. One thing that i haven't been proven wrong (or right) is: Can you judge the effectiveness of you WC setup by the water temperature? and If so, is the temp of water the same throughtout the WC, or is it cooler after the radiator?

    Debate & FIGHT!!! :D
     
  2. Gioz

    Gioz What's a Dremel?

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    water temperature is important beacause water is the element which cool the system.
    if the water temperature is raised down by a good radiator performances grow....for example with full load temperature are more simple to "manage".
    if water temperature is high wb can't have the best results,and at full load cpu temp grow up a lot
     
  3. fivecheebs

    fivecheebs Dont panic!

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    Have a lok at Procooling. there is a board in the forums dedicated to testing equipment and methods. Be prepared to be dazzled though there is an awful lot of techinical information there, alot of the basics will never get mentioed either as its taken that that is understood.
     
  4. Nexxo

    Nexxo * Prefab Sprout – The King of Rock 'n' Roll

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    Water temperature in itself is a bad comparison as a really bad (or badly seated) block can pass almost no heat on whatsoever. As such your can CPU bake, while your water is nice and cool and gives the impression of a very efficient setup.

    Another measure therefore is the difference in temps between the CPU/GPU (or whatever) and water (the idea being that the smaller, the better), but in a setup with a poor radiator, the difference could be very small simply because both are very hot.

    The effectiveness of your WC is, in the end, measured by the difference in temp between your CPU/GPU (or whatever you cool) and the ambient temperature in the room. Which is, after all, the whole point of cooling.
     
  5. jjsyht

    jjsyht Hello, my name is yuri

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    i'll try not to be stupid and put the block right:)
     
  6. SteveyG

    SteveyG Electromodder

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    The water in my system is generally 3 or 4°C higher than ambient (it's now at 33°C), but the CPU temp will vary between 4 and 10°C above the water temperature, so you can see that the water temperature wouldn't be a particularly useful indicator.
     
  7. jjsyht

    jjsyht Hello, my name is yuri

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    I agree that its not a good indicator, but the cooler the water is, the better(assuming the other components are operating propery), right?
    and the question i really want to know, is the temp of water the same throughtout, or is it cooler immediately after the radiator?
     
  8. Nexxo

    Nexxo * Prefab Sprout – The King of Rock 'n' Roll

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    It is cooler immediately after the radiator (else there would be no point, right? ;) ). But we are talking about no more than a few degrees C.
     
  9. Snowshadow

    Snowshadow What's a Dremel?

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    Its comforting to see some numbers like this every once in a while to know I at least did my first water cooling project rite.
     
  10. jjsyht

    jjsyht Hello, my name is yuri

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    So putting the CPU block immediately after the radiator (instead of GPU for eg) will cool the CPU better, even if its only a fraction of the few degrees decrease from the rad.
    I wish could understand what he means here, the second one. The conclusion is clear, but not how he got there.
     
  11. SteveyG

    SteveyG Electromodder

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    I doubt you'd even see that much difference in temperature unless it's a low flow system.
     
  12. Nexxo

    Nexxo * Prefab Sprout – The King of Rock 'n' Roll

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    He is basically looking at the difference in water temperature before and after the pump (as a marginal heat source). This is a very different comparison to that between water entering the rad after it has passed all the heat sources, and leaving the rad after it has been cooled down.
     
  13. jjsyht

    jjsyht Hello, my name is yuri

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    :duh: ! i didn't even understand the conclusion then :sigh:

    So.... anybody ever measured the temp of water before and after your rads?

    I DID :search:
     
  14. Gioz

    Gioz What's a Dremel?

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    when water walk trought a block his temperature grow up but with a good pump temperature can't grow up a lot in a single passage.
    when water go from cpu to gpu block temperature difference is not excessive and performances are "the same"(or almost are in the same range)
    if you set up a radiator between cpu and gpu blocks the pression of the water raise down and probably temperature of water is lower but pression too,and performances will be the same(or almost in the same range).
    best solution in my opinjion is
    pump->Y->CPUblock
    pump->Y->gpublock->radiator
    but it depend from the blocks and radiator
     
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