Calculating prop size for wind generators

[mazzy187]

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. =)

 

[mgb_phys]

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,