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Thread: Bringing down pond temperature with misting nozzles and fans

  1. #41
    Sansai nivek's Avatar
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    Hi Yerrag, our ambient is around 31-32C currently. You can get the misting nozzles off ebay as they're pretty cheap at USD10 for 10 pcs with piping.

  2. #42
    Oyagoi yerrag's Avatar
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    That is really warm weather you have now. Manila now is around 23-25 C. This is cold season here, which lasts till February.

  3. #43
    Sansai nivek's Avatar
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    Sorry for the confusion yerraq, 31/32 is the max for the day. At night it could go down to 23.

  4. #44
    Oyagoi yerrag's Avatar
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    That's more like an answer from a regional neighbor. For awhile, I thought you'd moved to LA or to Durban. Best time of year to enjoy a round of beer with deep-fried calamari, sizzling facial skin of pig (sisig), and spicy mussels. Cheers!
    nivek likes this.

  5. #45
    Fry
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    Fan cooling

    Nivek,

    Those are great results you are getting! What sort of temperatures would you achieve with just the fan running without the mister? Wondering how much cooling can be had from evaporation off the pond surface.

    Jeff

  6. #46
    Sansai nivek's Avatar
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    Quote Originally Posted by Jeffkoi View Post
    Nivek,

    Those are great results you are getting! What sort of temperatures would you achieve with just the fan running without the mister? Wondering how much cooling can be had from evaporation off the pond surface.

    Jeff
    Add another 1-2 degrees without the misters.

  7. #47
    Fry
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    Quote Originally Posted by nivek View Post
    Add another 1-2 degrees without the misters.
    btw, not sure if you are aware, there is a mathematical formula to calculate the theoretical minimum temperature achievable by evaporation. Google psychrometric calculator.

    for example given 35C temperature for atmosphere and 60% relative humidity, the lowest theoretical temperature achievable is 28C.

    Sounds like your results are pretty near the thoretical best.

    Jeff

  8. #48
    Oyagoi kingkong's Avatar
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    liquids cool as they evaporate, the more evaporation the cooler the liquid...

  9. #49
    Oyagoi yerrag's Avatar
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    In a way, youi're right. If the liquid (in the form of mist) that evaporates causes the air to cool, and the air is above the pond water surface, the air will keep the pond water from being exposed to the high ambient temperature (of air in the general surroundings). The pond water will be kept from warming up as much as when it is exposed to ambient air temperatures.

    The mist acts to absorb the heat of the ambient air, and as the mist evaporates, it cools the air that envelopes the surface of the pond.

    The finer the mist, the larger the surface area exposed to air to evaporate, the more cooling is achieved.

    Unfortunately, very fine misters use a lot of power, and cost more.

    I dream about running a fine mister on our hot summers, powered by solar power. The warmer it gets, the more the power available to power the mister.

  10. #50
    Jumbo sacicu's Avatar
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    I did misting for 2 months 2 years ago. I phases it out.

    Sent from my GT-I9505 using Tapatalk

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