The Daily Sprout

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Magnetically Levitated Wind Turbine: The company Maglev Wind Turbine Technologies just started operating and already writes that its strategic vision is to “generate 25% of the U.S. and world’s power needs by 2020.” Whoa there — TreeHugger, release.

Barometer of EU Biofuels: A report says that “EU biofuel consumption reached 5.38 million tons of oil equivalent (Mtoe) in 2006 — up from 3 Mtoe in 2005.” — Renewable Energy Access.

Lowdown on green laptops: An eye-catching spread about the eco problems and solutions for laptops — Popular Science.

Green for Water Purification: Halosource, a company that is working on water purification technology for the developing world, raised $15M to expand into China and the Middle East—Puget Sound Business Journal.

Cellulose-Fed Fuel Cell: Two bacteria are apparently better than one when it comes to creating a fuel cell that consumes cellulose and produces electricity –-Green Car Congress, release.

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Wow, that maglev thing is just ridiculous is too many ways to list, but just to hit a few simple fact checks….

Modern wind turbines are typically 30%-40% efficient. But, the highest possible efficiency for a wind turbine is around 59%, simply because you need to leave enough energy in the wind for the air to move away downstream (google Betz limit for more on this).

Losses to bearing friction are not all that large. If they were, the amount of energy going to heat the bearing would be similar to the amount of energy the turbine generates, and, well, there’d be a lot of melted turbines around.

Most existing wind turbines were put into production in the last few years. Relatively few are nearing the end of their useful life, as the site claims. Operating and Maintaince costs for wind turbines are generally quite low.

There are plenty more. It seems like all these guys did was take a vertical axis design, draw it like a 1000 feet tall, and add the word “maglev” all over the place. Question is, are they just cranks, or actively trying to defraud investors?

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