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Thread: Humidity, Potential Trouble?

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    Default Humidity, Potential Trouble?

    Could high humidity levels be considered liquid cooling?
    Recently in LA county we've had a lot of high humidity, with last night being the worst so far. Even though there was some rain, the air itself felt like it was wet. We don't have ac, so, I was wondering if high humidity levels could cause any trouble in my system?

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    Default Re: Humidity, Potential Trouble?

    Felt like I was back home the last few days with the humid weather we are having, was glad to see a bit of rain more like a drizzle wish it had been a downpour instead
    with the drought we are experiencing we really need some real rain here.

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    Default Re: Humidity, Potential Trouble?

    Quote Originally Posted by Mystikhol9 View Post
    Could high humidity levels be considered liquid cooling?
    Recently in LA county we've had a lot of high humidity, with last night being the worst so far. Even though there was some rain, the air itself felt like it was wet. We don't have ac, so, I was wondering if high humidity levels could cause any trouble in my system?

    Yes high Humidity can cause issues with some components and some cooling solutions. Some boards have a feature to deal with humidity by ramping fans to reduce the risk of condensation build up. Below is a great explanation by Anandtech

    "
    You have a PC in a very humid climate, where humidity is in the high 90%. When you use the PC for gaming, the temperature inside the case rises. As air gets warmer, it can hold more water.


    Therefore, if we have (for example) 4 grams of water in a case at 40C, the specific humidity of that air is greater than a situation where we have 4g of water in a case at 60C. But at 60C, the air can hold more water (say 6g). When the PC is turned off, or the localized air gets cooler, the air inside the case can get cooler, and when the air reaches 100% specific humidity, the water vapor leaves the air and condenses on components. ASRock's Dehumidifier function makes the PC spin up the fans for a periods of time during the day to remove the hot air that has accumulated during the day from the case, and replace it with cooler air, but at the same time the hot air takes away the extra water vapor with it.


    It can get confusing as well if you consider where the extra water vapor would come from. Scientifically, it deals with the balancing of specific humidity across two adjacent temperature zones. Using arbitrary numbers, consider two pockets of air close to each other. Each holding 2g of water vapor (so 4g total), but the first pocket of air (A) is at 40C, with a specific humidity of 100%. The second pocket of air ( is at 80C, with a specific humidity of 50%. The water vapor will migrate from A to B, in order to balance the specific humidity. This would mean that in the end, A would still be 40C (assuming no heat transfer), but hold 1g of water with a specific humidity of 75%, and B would still be 80C, but hold 3g of water with a specific humidity of 75%.
    If suddenly the temperature of B dropped to 40C, then 1g of water would condense out of the air, leaving it with 2g of water (specific humidity of 100%). This is the scenario ASRock are hoping to avoid with the 'Dehumidifier' function. Perhaps 'Dehumidifier' is the wrong thing to call it, but it is there if this is your scenario.


    (For completeness, A and B would again equilibrate to 87.5% relative humidity (1.5g of water each) at 40C. There is then the possibility that they would reabsorb some of the condensed water back until none was left. Please note I was using arbitrary numbers to showcase a point, rather than exact calculated values for a given volume)"
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    Default Re: Humidity, Potential Trouble?

    Oh yeah. One of the easiest ways to remove the threat of vapor build up is to remove the side panel.
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    Default Re: Humidity, Potential Trouble?

    The humidity levels we are getting here in LA is not enough to really warrant any levels of danger or problems right now.
    Unless we peak in the high 80s most of today's motherboards will be ok and handle it.

    The humidity we are getting is not that bad, even in the area I live in which have been getting some of the flash flood rains since I am in the higher elevation.

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    Default Re: Humidity, Potential Trouble?

    In a high humidity environment long term there must be consideration given to oxidisation.

    Living by the sea has shown me that over the course of around 2 years of constant running I begin to see rust and oxidisation of circuits if I try to cool using outside ambient air.

    The most successful method for me was to watercool with the radiator outside but the rig inside. I would imagine that otherwise some form of coating using conformal spray would help
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    Default Re: Humidity, Potential Trouble?

    Quote Originally Posted by grumpydaddy View Post
    In a high humidity environment long term there must be consideration given to oxidisation.

    Living by the sea has shown me that over the course of around 2 years of constant running I begin to see rust and oxidisation of circuits if I try to cool using outside ambient air.

    The most successful method for me was to watercool with the radiator outside but the rig inside. I would imagine that otherwise some form of coating using conformal spray would help

    yeah I am sure that Sea air is not good over the long term. I can not think of anything that can help with the long term exposure to Sea\Salt water in the air. Passive cooling of the entire system might help. Doubt you or any gamer will like those results.
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    Default Re: Humidity, Potential Trouble?

    Quote Originally Posted by vinman View Post
    Felt like I was back home the last few days with the humid weather we are having, was glad to see a bit of rain more like a drizzle wish it had been a downpour instead
    with the drought we are experiencing we really need some real rain here.
    Yup, drizzle doesn't help much, but , according the "experts", we should have an El Nino season this year, so, hope it comes.

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    Default Re: Humidity, Potential Trouble?

    Quote Originally Posted by Cyberburnout View Post
    Oh yeah. One of the easiest ways to remove the threat of vapor build up is to remove the side panel.
    So, it's pretty much, when in doubt, take off the side panel, just in case. Like Solara2xb was saying, we don't get this kind of weather very often, but when we do, these things are good to know.

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    Default Re: Humidity, Potential Trouble?

    I'm living in Lima (Peru), where average humidity reaches about 90% during the year. So far I have had no problems with the oxidation of the components of my PC (motherboard circuit or other), probably because I changing them every couple of years, but I must agreed that long term exposure see/salt in the air would affect the PC components, as affecting almost all metal products.

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