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12 Volt Wind Power

Discussion in 'Home Power and Microgeneration' started by Ian Bee, Oct 21, 2003.

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  1. Ian Bee

    Ian Bee Guest

    I enjoy camping here in South Australia. I use a Waeco 12 v Fridge
    along with another 12 v standby battery ( Waeco - Blue Apple ).

    This system allows me to sustain my fridge for around 24 hours, after
    that I have to start recharging by stand by battery using my cigarette
    lighter in my vehicle.


    Here in Australia, you can buy units that fit in front of automotive
    Radiators that in essence, are another fan & motor. They are connected
    to your car's thermostat, and cut in & out depending upon engine

    Now, here's the thing... can i get one of these, place it in the wind &
    generate power? I am led to believe that these units are permanent
    magnet motors.

    The reason I ask this is because these units are relatively speaking,
    cheap and readilly available.


    Ian Bee
  2. Vaughn

    Vaughn Guest

    Only if you often have winds of 40 to 50 MPH. It would be better to
    look at the 12V. wind generators that are marketed to boaters, but they are
    not cheap. They are designed to generate significant power at more normal
    wind speeds.

  3. Guest

    One of the common assumptions I often hear is that a fan with motor
    will make a good windmill and generator. If you notice the angle of
    the blades on a fan, as opposed to the angle of the blades on a
    windmill, you will often see a large difference in the pitch of the
    blades. This is due to basically a difference in angle of attack, and
    direction of desired "lift". In the case of a fan, the effective
    "lift" is down the length of the propellor shaft to move air down the
    length of the shaft. In a windmill, the desired lift angle is 90
    degrees off from the shaft to provide torque to the shaft.
    So, while some fans will work as a windmill, they are not at the most
    efficient angle and can never compete with devices designed for that
  4. Steve Spence

    Steve Spence Guest

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