The MARET Center wind turbine is a Nordtank 65 kW machine originally manufactured in Denmark. The turbine had spent several decades generating power for a wind farm in California when the next generation large wind turbines replaced it. The Nordtank was transported and refurbished by Ozark Energy Services of Joplin, MO, and it was subsequently purchased by Crowder College.
The Nordtank 65 is an “upwind” machine that is oriented into the wind by a geared yaw drive controlled by a wind direction finder. The turbine begins to produce power when the rotor reaches 42 rpm at about 10 mph wind speed, and it generates its rated power at 44 rpm at 33 mph wind speed.
In its first month of operation, the Crowder turbine produced 10.2 MWh (10,200 kWh), or enough energy for 8-10 homes. Some of its technical specifications are as follows:
Wondering about making your own windmill? Watch this video of the inspiring story of William Kamkwamba.To read all about wind turbines visit the American Wind Energy Association.Tax credits to businesses and colleges investing in Wind – New for 2009 visit AWEA.org
Turbine photo used with permission, copyright dwclaborn