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System Exhaust Blower

Discussion in 'Hardware' started by bobtrop, Aug 3, 2006.

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  1. bobtrop

    bobtrop Thread Starter

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  2. onsite

    onsite

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    Fits in a pci slot ?
    you may not need anymore cooling adding another HD. What is your ambient temp outside the pc ?
    You should download speed fan, maybe your fans are not turning fast enough. I found that the fans on my HP media ctr were spining a third of what they should be. you have to configure speed fan to work on boot up or you will have to manually start.
    http://www.almico.com/speedfan.php
     
  3. Jones

    Jones

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  4. JohnWill

    JohnWill Retired Moderator

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    I don't agree that a fan card that just blows air around the case is better than the previous idea. This is commonly known as a "do nothing" fan. I don't think the slot mounted exhaust fans will be all that effective either, they're low capacity and make lots of noise. However, at least they're exhausting some air.
     
  5. Jones

    Jones

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    I probably should have stated that the effectiveness of the fan card is directly influenced by the intake/exhaust of air in the case. Naturally, you will need cool air coming in and hot air going out, but the fan card (IMO) does a very good job of circulating the air within the case.
     
  6. JohnWill

    JohnWill Retired Moderator

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    The problem is, you don't want the air circulating in the case! The best cooling is realized if you have natural convection of cool air coming in low and being exhausted high. Helping it out with fans is OK, but creating unneeded turbulence in the case is a bad idea.
     
  7. Jones

    Jones

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    You don't want the cool air that's coming in to be circulated around in your case to the various heat-generating components?

    Of course you still need cool air in and hot air out, but why wouldn't you want the cool air to be spread around more?
     
  8. win2kpro

    win2kpro

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    It has a pretty good airflow at 42CFM, however the exhaust air flow is not going to do you a lot of good unless you have a sufficient inlet area.

    Many chassis are extremely "weak" on inlet air.
     
  9. onsite

    onsite

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    Actually what you want is ALL case fans is to blow air out the back. This way cool air will be drwan in and across components, much more efficient then trying to force air over every component. The exception is if the fan is mounted on a heatsink, then the fan blows air over the component.
     
  10. win2kpro

    win2kpro

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    JohnWill has it EXACTLY correct in post #6.

    "Ideally" inlet air volume should be equal to, or slightly greater than exhaust volume. Inlet volume because of chassis structure, cables, etc. will lose some efficiency because of these restrictions and create turbulence which in affect decreases cooling ability.
     
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