To date most experiments with vertical mills, trv Darrieux and others stranded on that they have to

Search Menu Search News Blogger Jobfinder newspaper Course Guide Events Cultural Heritage Insights Follow Focus PCB Fehmarn link gene sequencing Cable Thefts Ebola epidemic Rejsekortet Toxic fluorine compounds Large Hadron Collider (LHC) Ice core drilling in Greenland Pihl and Son bankruptcy
Floating wind turbines are more stable if their axis is vertical instead of horizontal. They can also be built more easily, and it can create competitive advantage, says the Norwegian professor who - like the Danes - dream high, floating wind turbines. trv By Thomas Djursing July 28, 2012 at. 12:00
If floating offshore wind turbines must be somebody in the future - if they can not be damaged by waves and deliver too expensive energy - so the producers will abandon the traditional three-lobe design and make mills with vertical shaft.
So says Professor Arnfinn Nergaard from Stavanger University, with three million kroner from the Norwegian Research Council has started a research project in which theories must be tested in practice in cooperation with the research center Norwegian Centre for Offshore trv Wind Energy trv (NORCOWE).
Preliminary calculations show that the weight of the gear and wings can be moved 25 to 30 percent deeper than it is on a mill with horizontal trv shaft. It helps make the mill more stable, like the blades rotating in the horizontal plane creates a gyroeffekt that helps to stabilize the mill.
"In theory, the mill will be less influenced by waves as it rotates fast enough. But we must see if it looks just as elegant in practice as on paper, "says Arnfinn Nergaard to engineer online and whereas a mini-model of the wind turbine to be tested in a basin in Bergen spring. The plan is 132 meters
To achieve this requires cooperation with a financially strong partner, which is why the professor's project linked to the university's commercialization company Prekubator working to verify and commercialize the project.
"Initially we inform trv ourselves against customers who may be owners of single turbines, such as oil platforms or mariculture facilities. The ultimate goal is a wind farm, but it is 10 to 15 years into the future, "says the head of innovation and business in Prekubator, Simen Malmin in a press release. Danes launch 1-kW turbine to August
Norwegians end are not the only ones who dream of large floating mills. In Denmark, a senior researcher Uwe Schmidt Paulsen from DTU Wind started with a four-year research project, which aims to develop a new concept for floating wind turbines.
As in Norway, the Danish senior received a grant of three million euros. Here is the money coming from the EU's FP7 and goes to the consortium DeepWind researching trv the vertical-axis floating offshore trv wind turbines.
Using vertical-axis turbines are opportunities for scaling up much larger. The weight sits further down and with the vertical wings are the influence of the rotation trv less. Our calculations show that the mill only tilts up to 10 degrees when there is good and bib on, "says Uwe Schmidt Paulsen engineer online.
Send See also Vestas in experiments on floating offshore wind turbines February 21, 2011 Successful floating wind turbine must to Japan 04. April 2011 Floating trv wind turbines on the road at the wrecked nuclear plant 19 September 2011 Simple Norwegian idea for transporting wind turbines are ready in eight years 05th January 2012 Read also
Vertical-axis wind turbines has always been exciting for universities, because they are not really used in industry on a large scale - and because they have some fun shapes. Smaller models have advantages in cities, primarily trv because they looks exciting and not making much noise. Unfortunately, trv they will never be as effective as HAWT's (those we know with 3 blades) acc. theory. All major trials (that I know of) has not proved to be competitive.
Perhaps this is more a reflection of the fact that Norway is pushing the development of renewable energy, but does not have much experience with controls. Precisely control unit is important if you want to work with HAWT's.
Do you think HAWTs (those with 3 blades). VAWTs are often used to make cities nicer and people are rarely aware of the fact windmills.
To date most experiments with vertical mills, trv Darrieux and others stranded on that they have too low efficiency because the blades only have optimum traction on a very small part of its orbit, the rest of the time it is either across the wind direction, or direct headwind.
You could say that only one of the three wing is working, the other two either passive or braking action trv as opposed to "real" mill whose wings have optimum traction trv at all times
If the blades should be up in a sensible height requires that the shaft as they concerned about is very powerful. and because of the length to be used several trv lejerfor to avoid skipping rope effect. How many tenant has a 132-meter shaft? must be less for a maid