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Thread: Fans

  1. #1
    Thailand Expat david44's Avatar
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    Fans


    One particularly unconventional method championed by a New Zealand-based eco-warrior involves pointing an electric fan outside of your open bedroom window to keep cool at night.
    Nelson Lebo, an eco design adviser for Palmerston North city council in the South Pacific nation’s North Island, explains the clever fan trick works by blowing the warm air stagnating inside your property outwards, while pulling cooler air in.
    He explained the fan should be set up just after sunset, when the temperature outside becomes cooler than inside your home.




    Mr Lebo, who is originally from the US, said he learnt the trick from his grandmother who used it in New Jersey during the Seventies.
    “Everyone knows about cross ventilation,” he told The Telegraph, “but it only works when the wind is blowing and then it works best when there is a direct route for the wind to blow through a home.


    “What the fan does is, it forces cross ventilation, even when the wind is not blowing. A fan will also pull air around corners, as in our home.
    “The overall goal is to pull the warm air out while drawing cool air in once the outdoor temperature drops below the indoor temperature. Fans use hardly any power compared to AC.”




    Mr Lebo added that while pointing the fan outside the window may seem counterintuitive to some, it is a lot more effective than the standard method.
    “The standard way simply pushes warm air around the room but we perceive it as cooling because moving air feels cooler than still air,” he says.
    “My technique of forced cross ventilation actually cools indoor air down by drawing in air cooled for free by nature that is just outside from late afternoon onward.”



    It could be time to turn that fan around CREDIT: ROBERT DALY / OJO IMAGES RF

    He added: “Just make sure the bedroom windows are the ones with the air entering! The outward facing fan must be in the far end of the dwelling.”
    The UK enjoyed the hottest day of the year on Tuesday as temperatures peaked at 30.6C (87F), with the heatwave showing no signs of abating.


    How much deeper would oceans be without sponges

  2. #2
    Member Dead Metal's Avatar
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    Seems logical .

    Myself i tend to open windows on oposing sides of the building.

    If you could aford and have the space for a fountain plus fans you would see the temperature drop rapidly .

  3. #3
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    Quote Originally Posted by david44 View Post
    Nelson Lebo, an eco design adviser for Palmerston North city council in the South Pacific nation’s North Island, explains the clever fan trick works by blowing the warm air stagnating inside your property outwards, while pulling cooler air in.

    Mr Lebo, who is originally from the US, said he learnt the trick from his grandmother who used it in New Jersey during the Seventies.
    It's a fantastic trick (we can say a discovery), something like the discovery of America..

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