Tuesday, July 8, 2014

Wind Turbines, Hot Air‏

Residential wind turbines for household power requirements are in the news. Their history is worse than spotty. Even under the best conditions they have irregular output. Reno, NV and Ellensburg, WA both have had wind turbine projects. The city of Ellensburg published a detailed report on November 1st, 2013 - titled "Smart Grid Demonstration Project Completion Report." Here's some basic results of their testing of 9 small turbines:
1KW "Wingpower" turbine = 109 kWh generated over the year. 2 units suffered wing failures, 3 units failed, each almost immediately after replacement.
1.2KW "Windspire" VAWT = zero kWh output, generator & inverter failure - manufacturer out of business.
1.5KW "WindTronix" turbine = zero kWh output, wings torn off, non-operational
2.5KW "Energy Ball" turbine = device consumes more power than it generates, currently operational

But the names are really cool.

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