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Calculating prop size for wind generators

  1. Jul 22, 2008 #1
    It's been a while since I've been in the classroom and I'm having trouble figuring this one out. I'm trying to create a wind turbine and I need to calculate the size of the prop needed to power and electrical generator. For ease of numbers let's say I'm using a 2800watt generator. (http://www.grainger.com/Grainger/items/6HJ87)

    Max. AC Watts 3000
    Rated Watts 2400
    HP Required 5
    RPM 3600
    kVA Rating 2.4
    Voltage 120
    Amps @ 120V 20
    Phase Single
    Hz 60

    With this information, I'm sure we can calculate the size of the prop that I need to turn it at 3600RPM... I just don't remember how. =)
  2. jcsd
  3. Jul 22, 2008 #2


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    You probably want a gearbox in the way, a wind powered turbine isn't going to be running at 3600rpm (at least not on this planet)

    There are a bunch of sites about wind power and calcualtors for sizing props, tower height etc. They also describe which generators are most suitable,
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