Is there a current turbine project that is already producing energy?

water is 800 times more dense than air - there should be a big amount of energy in ocean currents.

The paper deals with the dynamic performance of a simply reinforced concrete tower built using prefabricated elements. The main uncertainty of this strategy stems from the possible cracking of the concrete and its implications on the stiffness, natural frequency and dynamic amplification of the tower. In 2006 an 80 m high prototype was built, supporting a 1.5 MW wind generator, carefully instrumented and test loaded to 80% of its design capacity. The prototype and installed instrumentation remained in operation for 3 years. Detailed calculations were carried out of the cracking induced in the concrete and its effects on the natural frequency of the tower, as a function of wind speed and orientation; the results were compared with the monitoring data. It is concluded that numerical modelling with Abaqus allowed good predictions and interpretations of the observed response of the tower. Also, simply reinforced concrete is shown to be a good option for high towers; if the structure is well designed, the natural frequency will not migrate to a point where its proximity to the forcing frequency will lead to unacceptable levels of the dynamic amplification.

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Reading List:

Basic Concrete Engineering for Builders with CDROM / Design of Concrete Structures / Strength Design for Reinforced - Concrete Hydraulic Structures Engineering Manual on CD / Design of Offshore Concrete Structures / Construction of Marine and Offshore Structures, Second Edition (Civil Engineering - Advisors) / The Dock Manual: Designing/Building/Maintaining / Theory and Design of Concrete Shells / Thin Shell Concrete Structures / design procedures of reinforced concrete shell structures (JGJT 22-98) / Understanding Structures / Concrete Planet: The Strange and Fascinating Story of the World's Most Common Man-made Material / Concrete Construction Manual (Construction Manuals (englisch)) / Large Wind Turbines: Design and Economics / Dynamics of Offshore Structures / Offshore Technology in Civil Engineering / Design of Offshore Concrete Structures / Concrete in the Marine Environment (Modern Concrete Technology)

 

Costain plans concrete base wind turbine revolution

Partners Costain, Hochtief and Arup have won Government funding to test a new design of concrete bases for large offshore wind turbines.

The Gravitas Offshore consortium hopes to use flask-shaped concrete gravity bases to anchor wind turbines, rather than deep monopiles in the the sea bed, opening a market worth up to £50bn and revitalising the concrete industry.

The mass-producible, self-floating concept is designed for large-scale wind turbines, substations and met-masts, to be installed at sites with water depths greater than 25m.

A £550,000 grant from Department of Energy and Climate Change will be used to demonstrate the cost-effectiveness of this approach against offshore installation of mono pile foundations, which has proved technically challenging.

In some cases grouting around the single deep pile foundation has shown signs of stress cracking.

Gravitas Offshore has also reached an advanced stage to commit to the construction of a demonstrator foundation for deployment in UK waters within the next two years.

 

 

http://www.constructionenquirer.com/2012/09/21/government-backs-costain-concrete-base-wind-turbine/

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What cameras are you using for your pictures? I am fond of taking pics and recently I decided to buy a new camera. But I need some advice. I am based in one city and want to buy a camera from a different location, check over here. Is that safe to post a camera? Do you think it will arrive without any damage? What should I check in the first place to ensure it is working properly. Thanks a lot.

-- Edited by iooprus on Friday 10th of April 2020 08:34:02 PM

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Wow, this is really awesome looking turbine architecture I wish I have some high-quality photos of turbine technology If someone has that they can send men on New Orleans zip code US.

A model of turbines always itself is a great example of engineering, often the lack of entertainment is seen in the life of those who understand it, so enjoy the turbine puns by taking a few moments of rest with funny turbine puns. 

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