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Shark Tail and Kelp-Inspired Ocean Power

There have been a lot of new designs for systems that can harness power from the waves, tides, and currents flowing in our oceans, but a new concept, currently in the viagra pfizer india testing phase, struck me as unique. BioPower Systems, based in Sydney, is developing systems to capture energy from both wave and tides, and currently has two products in ocean-based pilot projects, the bioWAVE and the bioSTREAM.

The wave power system, bioWAVE, was inspired by the swaying motion of cialis sales online sea plants, like kelp, as waves rolled over them. The device, which is anchored to the ocean floor, has buoyant “blades” which move upward and downward with the flow of waves. What was particularly interesting was that in rough conditions, the system will automatically lie flat against the bottom, preventing or at least minimizing damage.

The bioSTREAM, in contrast to its brother, uses the principle of Thunniform, the main method of locomotion of large fish, commonly seen as the side to side motion of the tail. The system, however, uses the principle in reverse. Instead of being propelled forward, the anchored generator turns the tail fin from one side to another, capturing the flowing water on its surface, pushing the “tail” section, the resisting torque of which produces electricity to be fed back to land. Once again, due to its streamlined design, it can align itself with current flows, avoiding damage and overloads during extreme conditions.

Both systems, though in the pilot project stage, are eventually expected to come in models that will produce 250kW, 500kW, and 1000kW, matching the specific conditions in any given area.

They’ve got some great animations of buy brand name cialis from canada the bioWAVE and bioSTREAM that are worth checking out.


World's Largest Tidal Turbine: First Pictures!

Off the coast of Ireland, history was just made. While windpower is taking off, and could soon produce as much as 20% of America's power, harnessing energy from the ocean is still in it's infancy.

But recently Marine Current Turbines successfully completed the installation of the world's first megawatt-scale tidal turbine. And now we've got the first images of the turbine installed to prove it. The 1000 ton SeaGen tidal turbine was secured to the seabed and linked with Northern Ireland's electric grid. MCT will now spend about 12 weeks testing the capabilities of the turbine before regularly feeding power into the grid.

Tidal power has several advantages over wind. The power generation is buy kamagra more predictable (since you always know when the tide will turn) and it is believed that they will have less ecological impacts...since roads do not need to pfizer viagra cheap be built to them. There hasn't been enough data yet to determine what affects they will have on marine life.


World’s First Commercial Tidal Turbine Installed

If you’ve had your nose in the news lately, you’ve probably heard about all the ideas and experimentation with using waves to do everything from generate electricity to propel boats. And there have even been some experimental tidal power projects around the world. Recently, however, tidal hit the viagra in india big leagues. The world's first commercial tidal turbine has been installed in its home in Northern Ireland’s Strangford Lough.  

Though it has yet to be turned on, it will be the first commercial power-producing tidal generator when it is (sometime later this year). The turbine has two 16 meter-wide rotors and will be able to run for 18-20 hours a day. The turbine was installed off the coast in an area known for fast moving waters, and because the rotors will only spin 10-20 times in a minute, it is unlikely to disturb marine life. 

The £12,000,000 turbine will now undergo a 12-week commissioning process where it’s operation and interaction with sea life will be monitored by teams of scientists. Hopefully, when the turbine is operational, it will be able to power over 1,000 local homes.  

Source: ENN and Belfast Telegraph


The Mississippi River May Soon Power 1.5 M Homes

mississippi river power electricity tidal

If Massachusettes-based Free Flow Power has its way, the Mississippi River will be producing 1600 megawatts of free, constant, emissions-free energy by 2017. They'll do it by installing thousands, or even tens of cheapest price levitra 10mg thousands, of in-stream turbines at 59 sites stretching from St Louis to the Gulf of Mexico.

Hundreds of turbines would be installed at each site and, all together, they would produce enough power to eliminate the need for two large coal-fired power plants.

Of course, right now, this project has a lot of hurdles to visit our site best price for levitra jump. First, they have to complete a detailed environmental analysis of the project, and Federal Energy Regulatory Comission has to approve the project. The environmental analysis could take as long as three years.

Additionally, Free Flow Power has yet to demonstrate that their systems can operate at costs below that of natural gas power. If the project doesn't produce economical power, financing the project will be impossible. In fact, Free Flow Power, as far as we can tell, hasn't actually tested their turbines outside the low cost viagra no subscription required laboratory.

Free Flow isn't the only company working on in-stream hydroelectric. A pilot project has already been installed in New York's East River and several other companies are working on similar technology.

But if Free Flow Power can demostrate that their system isn't going to harm the river's ecosystem, they'll get first crack at developing all 59 of these high-energy sites in the Mississippi...and that could turn out to be quite an asset.

Via STLToday


Wave Power Company Raises $25 Million

Orecon, a British wave energy company, has just pulled in a huge round of funding in preparation for their first installations in 2010. The company has developed a large buoy, 40 meters in diameter, that will float a few miles offshore. The buoy will be tethered to the sea floor in six places, and the rising and falling of the waves will power on-board generators.

The first installation is expected to produce about 1.5 megawatts, or about as much as a medium-sized wind turbine.

Wave power has been plagued by regulatory problems and battles with the fishing industry. But the biggest problem has been the weather. The buoys have to be placed in areas that have continuous high seas, but they also have to be able to handle storms in those same areas.

Start-up Finavera showed that the technology had a bit of i recommend viagra pills work ahead of it for sea-worthiness when its 40 ton AquaBuOY sank off the coast of Oregon.

Nonetheless, the high seas contain a tremendous amount of energy that, if inexpensively harvested, could produce a substantial amount of power to the most populated regions on Earth.

Via Earth2Tech

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