Make-Energy.net

First outing for the turbine

Combo Rotor Vertical Axis Wind Turbine System
Range from 400W to 3KW.

Features:
1. Less Noise and good for Household application
2. Ease to start up at light wind: 2.5 m/s
3. Good Power Output (33% Capacity Performance with MPPT Power Controller)
4. Day-n-Night , 24 hours a day for 15 service years
5. Safe and Bird-hitting free
6. Small Space (within 1 square meter) for Installation
7. Less Turbulence problem

For details, please contact: eric@digitalhomeshop.net

Homemade Energy

A video record of the new Vestas v82 wind turbine erected on the St. Olaf campus in Northfield Minnesota

http://myfavouriteplaces.org Inside a wind turbine, windmill and shots from a siemens 1.3MW (megawatt) turbine.

Water+Gas Saves Big Bucks

I DID NOT BUILD THIS OR MAKE THE VIDEO, just posting it bcz I encourage everyone to invest in their own. This is a test run of the guys newly made wind turbine.

Output depends entirely on wind speed, windy days will yeild more power.

smaller units 5′-10′ average 50-500 watts
larger units 11′-20′ produce on average between 500 watts-up
(professionally 21′ and larger up to 7.5 Kw and up)

Power is defined as the rate at which work is done or energy is consumed. The formula for average power is acquired by dividing work by the time needed to perform work: P = W/t. Power has units of newton-meters per second or joules per second or watts

A kilowatt-hour is the electrical energy consumed in one hour at the constant rate of one kilowatt. The average household in the United States uses about 8, 900 kilowatt-hours of electricity each year.

Here are some math formulas to consider…(source: http://www.awea.org/faq/windpower.html)

Because air has mass and it moves to form wind, it has kinetic energy. You may remember from science class that:

kinetic energy (joules) = 0.5 x m x V2

where:
m = mass (kg) (1 kg = 2.2 pounds)
V = velocity (meters/second) (meter = 3.281 feet = 39.37 inches)

Usually, we’re more interested in power (which changes moment to moment) than energy. Since energy = power x time and density is a more convenient way to express the mass of flowing air, the kinetic energy equation can be converted into a flow equation:

Power in the area swept by the wind turbine rotor:

P = 0.5 x rho x A x V3

where:
P = power in watts (746 watts = 1 hp) (1, 000 watts = 1 kilowatt)
rho = air density (about 1.225 kg/m3 at sea level, less higher up)
A = rotor swept area, exposed to the wind (m2)
V = wind speed in meters/sec (20 mph = 9 m/s) (mph/2.24 = m/s)

This yields the power in a free flowing stream of wind. Of course, it is impossible to extract all the power from the wind because some flow must be maintained through the rotor (otherwise a brick wall would be a 100% efficient wind power extractor). So, we need to include some additional terms to get a practical equation for a wind turbine.

Wind Turbine Power:

P = 0.5 x rho x A x Cp x V3 x Ng x Nb

where:
P = power in watts (746 watts = 1 hp) (1, 000 watts = 1 kilowatt)
rho = air density (about 1.225 kg/m3 at sea level, less higher up)
A = rotor swept area, exposed to the wind (m2)
Cp = Coefficient of performance (.59 {Betz limit} is the maximum thoretically possible, .35 for a good design)
V = wind speed in meters/sec (20 mph = 9 m/s)
Ng = generator efficiency (50% for car alternator, 80% or possibly more for a permanent magnet generator or grid-connected induction generator)
Nb = gearbox/bearings efficiency (depends, could be as high as 95% if good)

If there is any single equation that the beginning wind enthusiast should memorize, this is it.

Here Are some links…

www.blueenergy.org
www.homemade-wind-turbines.co.uk
www.otherpower.com/otherpowerfront.shtml

Other Energy resource websites..

http://peswiki.com/energy/Main_Page

http://www.absak.com/

6kw Proven Turbine on a 15m mast

See more at http://www.renew-reuse-recycle.com

DIY Power

Maple Honda will install a private wind turbine at its new dealership in a unique partnership with Power Stream.

In keeping with leading edge technology pioneered by Honda Motor Co. Maple Honda has taken the innovative step of integrating energy efficiency in an automotive work place. “This is a new venture for both Power Stream and our leading regional automotive dealership. Our goal is to provide a tangible model for alternative energy options in Ontario. The Production of wind energy creates no air pollution and, if the turbines are sited properly, has minimal environmental impact.” says Mr. Zanchin. This is the first commercial-scale use of wind power to generate electricity in the region. The wind turbine will provide supplemental wind power to Maple Honda, and will produce approximately 110 MWH/Yr-which is the equivalent of powering 17 homes. It removes 82.5 tons of CO2 emissions/Yr and is completely Canadian made. Maple Honda will open for business in early fall 2006.

Ken Morgan, the founder of Helix Wind introduces the Helix Wind Turbine, a grid tie or off grid power system. For more information please visit the company web site. http://www.helixwind.com

Homemade Energy

Dommelvalley Green Power installation of a 1.8kW Skystream Wind Turbine in Utopia, Ontario, Canada

Energy Solutions