Water Mist cooling systems





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  1. #1
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    Default Water Mist cooling systems

    Hi guys

    I saw in the latest leasure Wheels someone is marketing a portable system with a pump and small jets to create this mist to cool your tent or camping area (similar to those at outdoor areas of restaurants). They quote either the use of a 12V pump or 220V, total cost starting at R1700.

    A friend told me the jets/nozzles can be found at hydraulics shops, and one would probably need some sort of a high pressure pump and some chilled water - any ideas out there for DIY?
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    Default

    Obviously the pump will be very important. Marine shops sells a hi pressure 12v pump with a pressure switch normally used on yachts, starts at about R800 when I last checked.

    So if their price is R1700 incl the pump then you might battle to compete?

    They use mist systems like these at the croc park in Oudtshoorn, very effective.

    Dirk

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    Lightbulb

    What if you use a normal compressor and a jerry can - compressor pressurize the can and another pipe goes out with the mist-nozzles.

    any irrigation shop will sell everything you need except for the plug to seal the can.

    otherwise just take a sealed hose pipe with the nozzles on and hog the closest tap
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  4. #4
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    nicc

    I think most compressors will pack up if run continuously for a long period.

    The noise might make you rather unpopular in the camp!

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    Talking

    ook weer waar.
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    I don't think the water needs to be chilled. The cooling effect comes from the water extracting energy from the environment (or your skin) to evaporate. The evaporation is made easier when the droplets are smaller.
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    Default

    Does the "water coolers" as sold by Hyperama, Makro work on the same principle? It is a portable unit, looking almost like the portable air conditioners. Those sell for around R500 to R600.

    Regards,
    Tinus

  8. #8
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    Tinus,

    These coolers have a felt belt that is passed through water and a fan blows air over the wet belt. The evaporation cools down the air.

    It does not work very well in high-humidity areas (eg coast), because the evaporaation is less than in the dry areas.

    The charcoal chiller works on the same principle.

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    I will try to find out more - could be very useful in summer - if you guys dont mind - take a closer look when you see one of these systems again.
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    Question

    Guys one question. Would all this extra moisture been blown into the tent not contribute to the forming of mildew etc inside the tent

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    Default

    You can buy the pipe and fine mist sprayers from about R200. You need a constant pressurised supply of about 2 bar plus. So for camping it will work if you errect a 20m high water tank or lay a pipeline from your home into the bush . Lots of guys lately put aircons in their caravans.
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    Default

    You could also some sort of pressurised container (like the ones you use to spray pesticides) that you can pressurise manually (or by compressor)
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    Default Re: Water Mist cooling systems

    Hi guys.
    Resurrecting this post.

    Has anyone built their own? Which pump do you use that is both 12V and can handle constant pressure to feed the mist spraying nozzles?

    Thanx

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    Default Re: Water Mist cooling systems

    This is on One Deal a Day today...

    http://www.onedealaday.co.za/deals/d...TUdoTWlFIn0%3D
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    Default Re: Water Mist cooling systems

    Quote Originally Posted by Kooskop View Post

    There is no way that a tap will have the required pressure for this. The water droplets will not be fine enough.
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    Default Re: Water Mist cooling systems

    I bought 2 sets of these mist sprayers from my local garden centre, and let me tell you they use very little water pressure. I barely turn my tap on a few mm and the sprayers work perfectly. (and I have very low water pressure at my house)
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    Default Re: Water Mist cooling systems

    Thanx for the reply guys.
    I am actually looking for something with a 12V pump for using when camping in the bundus.

    Any idea which pump will be capable of this job?

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    Default Re: Water Mist cooling systems

    How about an Ultrasonic Mist Maker / Atomizer ?
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    Default Re: Water Mist cooling systems

    Quote Originally Posted by Wildkyker View Post
    Hi guys.
    Resurrecting this post.

    Has anyone built their own? Which pump do you use that is both 12V and can handle constant pressure to feed the mist spraying nozzles?

    Thanx
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    Quote Originally Posted by benhur View Post
    Guys one question. Would all this extra moisture been blown into the tent not contribute to the forming of mildew etc inside the tent
    If the weather is dry enough for the mist to be effective, it would probably dry out the tent quickly enough.
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  22. #20
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    Default Re: Water Mist cooling systems

    You may have to buy the pump and the spray system separately. The spray system you can buy from Outdoor W/H (Lumeno) and they may also point you towards a pump and sump

    It was also recently discussed on another thread.
    Last edited by hatjohan; 2019/01/24 at 01:02 PM.



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