by Gavin Ryder
Vertical wind turbines that are suitable for urban use are usually in the power range of about 2KW, though they can go up to 5 KW.
What sets a vertical turbine apart is that the blades rotate around a vertical axis. This contrasts with propeller type of turbine known as a horizontal axis turbine.
One of the main differences between vertical axis and horizontal axis turbines is that a vertical turbine does not need to swing into the wind as it shifts direction. The technical term for this is yaw. In order to capture the power of the wind all horizontal turbines need to do it. A vertical turbine can harness the wind?s power from any direction and so is simpler in design with fewer moving parts and less maintenance.
Vertical axis turbines come in two different types. There are lift turbines and drag turbines. Both have their advantages and disadvantages.
George Darrius invented the lift turbine which is sometimes also called a Darrius turbine. The rotating blades are shaped like an airplanes wing which is designed to create lift to get the plane airborne. In the same way the wind blowing across the aerofoil blade causes the blade to rotate faster. This contrasts with the drag turbine blade which is just dragged around and around by the wind. This means that the rotor blades in a 2 KW turbine can be smaller in a lift turbine and yet generate the same power as a larger drag turbine. However, there is just one small but very significant problem. The faster the blades go the noisier they get.
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by Dr. Thomson
I know what you’re thinking: “Run car on water – is that even possible?”
Honestly, you can run car on water whatever model or type it is! Not to mention it won’t take a geek or an expert technician to apply the tricks behind it. Now, if you’re still thinking twice about its validity, let me reveal some interesting facts about how to run your car on water.
Run Car On Water Proofs
- For less than $200 you can start to run car on water.
- And converting your vehicle to run car on water will get you a cash refund of $2000 from IRS and $50,000 when you convert a truck instead. We’re NOT even starting about the savings when you run car on water!
- Approximately 50,000 families in the US and counting now have at least a kit and manual on how to run car on water.
- With millions of Americans who own cars, that may not sound much BUT when you realize that this money-saving technology isn’t promoted and covered that much, it’s not very astounding. And you’re sure to be one of the guys who use run-car-on-water technology.
- Honestly, everyone can start converting their vehicles and get it to run on water with the help a guide. And these good guides won’t cost you $100.
- Combine that with a little technical knowledge about your car, add some tools to it and that’s it! Nothing complicated is required to run car on water.
- Whatever qualms or worries you have about this money-saving idea has been banished.
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by Donna Miller
There are a lot of energy resources which are going largely untapped. If we could develop the necessary technologies to take advantage of these resources, we could begin to move away from fossil fuels and indeed, the existing electrical grid by using these alternative sources of energy.
One of these alternatives is wind power. The development of wind turbines continues to progress, with each new generation being more cost efficient; “wind farms” have begun to be used in many countries and these have been placed better than in the past, when they were often a threat to migratory birds.
One of the better known alternative energy sources is of course solar energy. The energy given off by the sun can be stored in fuel cells to generate electricity; and the sun’s heat can also be use to heat water for use in our homes. Solar energy, like wind power, does not create any pollution whatsoever.
Many governments and private investors are looking too ocean waves as being a potentially great source of energy. There is one generator which has been in use in France for sometime now with great success. In Ireland and the U.K., there are experimental generators in use as well.
Hydroelectric power is not exactly a new idea; however, it is an effective means of generating clean electrical power. Of course, not every location can benefit from electrical power since this requires having a large dam. There have been small, local dams built in many places, but of course these can not generate the amount of power that a large river and dam can.
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