This will be my last week on strictly VAWT’s. A quick lesson on the two basic types of VAWT’s. The first type is called the “lift-based” turbines. These turn faster than the speed of the wind due to aerodynamic design. The second basic type is “drag-based” turbines. The blades, cups, paddles or some type of wind catching device do not exceed the speed of the wind, such as anemometers used to measure wind speed.
Tangerie's Helical VAWT
Green EnerG Bladed Windturbine
I’ll start off with a few more “lift-based” VAWT’s that I was able to view at the Expo. There were several different designs, like “eddy” from Urban Green Energy(preview 2 weeks ago), HiVAWT’s small 300 watt wind turbine(previewed last week), JL CarbonFree Energy Co.’s FDC-S series of helical wind turbines, the “Gale” line of helical VAWT’s from Tangarie, residential VAWT’s by Gentle Breeze, Synergy Viridis with their line of small VAWT’s and 2 or 3 others I didn’t get a chance to visit any in depth.
Since I’ve already previewed “eddy” and HiVAWT, I’ll briefly go over the remainder of mentioned VAWT’s. JL CarbonFree Energy FDC-S series of helical wind turbines display was represented by a pearly white, direct driven permanent magnetic system with no magnetic brush, requiring practically no maintenance. Their site is: www.carbonfreeenergy.cn. See picture.
JL CarbonFree Energy FDC-S
Tangarie, a woman owned company, that manufactures and distributes the “Gale” line of VAWT’s, as well as other related services and products in the renewable energy arena. You can view their site at: www.tangerie.com. Their helical VAWT pictured.
The display by Gentle Breeze of their residential VAWT was one of fluid motion. I wish my video of this turbine was clear enough to publish but alas… I have included a picture of Miwa Kashiwagi in front of their residential model. You can access their site at: www.gentlebreeze.com.
Miwa Kashiwagi beside Gentle Breeze VAWT
The final “lift-based” VAWT that I was able to visit at the 2010 Windpower Expo was a display by Synergy Viridis. They also had a small, residential VAWT available. You can visit their site at: www.SynergyViridis.com
There were several “drag-based” VAWT’s, if you want to count all of the anemometer displays. Other than that, I visited one booth with a “drag-based” VAWT. It was a good display of a VAWT from Sauer Energy. It was made with a “dimpled” surface, same drag reduction principal as a golf ball. Their site can be viewed at: www.sauerenergy.com. I’ve included a picture of this “drag-based” VAWT to give you an idea of it’s appearance.
I have most of the pictures labeled so you know which is which, hopefully. Till next week, May God Bless You. Tim p.s. please leave any comments, questions or suggestions by clicking on the “comments” link immediately following this post.
Tim,
Why are gentle breeze and synergy vridis going to the same link? Are they the same?
Donnie
Donnie,
I’m glad you asked that question. When I posted it, I didn’t realize that the “Gentle Breeze” pic was actually a Synergy Verdis product. Basically, they are one and the same. Tim
Very good summary for selection wind turbine however another important issue should be considered. Battery cost is a huge cost for a off grid wind turbine system.
What are the pros and cons of wind energy?
Jack Brown,
Thanks for your question. Without getting into a big expose’, wind is free but you have to have enough. There are a lot more specific pros and cons dealing with many aspects of wind energy, areas such as location, maintenance, incentives, transportation(of materials to build the windturbines), distribution of energy and cost, just to mention a few. If you have any ideas, feel free to let me know.
Thank you for your comment. Batteries can definitely be a big expense. Do you have any information in this area?
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