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quarta-feira, 4 de agosto de 2010

Novidades

Começou a corrida para os Mega-Geradores!

Julgam que isto é grande?

Isto, é que é grande!!!

Engineers race to design world's biggest offshore wind turbines

British firm to design mammoth offshore wind turbines with 275m wingspan that produce three times power of standard models

• Interactive: The race to build bigger turbines
The revolutionary 10MW Aerogenerator X, a new breed of mammoth offshore wind turbine in development by British firm Arup. Illustration: Wind Power Limited and Grimshaw

British, American and Norwegian engineers are in a race to design and build the holy grail of wind turbines – giant, 10MW offshore machines twice the size and power of anything seen before – that could transform the global energy market because of their economies of scale.
http://www.guardian.co.uk/environment/2010/jul/26/offshore-turbine-britain

O Progresso não pára, mais uma nova maneira de produzir Hidrogénio:


New Process for Hydrogen Storage and Release
The elephant in closet of the loudly promoted hydrogen economy was that we had no practical method of storing a high concentration of hydrogen. A little thought showed one that we had to store it using chemical binding as an intermediate step. During the Second War, the Germans learned how to use hydrazine (NH3) for this purpose. Of course, it was scarier to work with than pure hydrogen.

Now we seem to have a possible solution using ammonia borane. The yield and process conditions seem sufficiently benign that it can work quite well in this role. What is not addressed is how we might produce the Ammonia Borane. That is often the real problem. I think hydrazine needed 600 atmospheres and high temperatures and all the costs associated.
http://globalwarming-arclein.blogspot.com/2010/08/new-process-for-hydrogen-storage-and.html

...E este é um Link valiosíssimo, uma fonte de Informação sobre uma data de coisas:

AIChE Journal Book Cover
Subscribing to the AIChE Journal is like having access to nine topical journals in the field. You’ll quickly find the latest examinations on the topics you care most about in our unique "Perspective" column and thoughtful reviews. And, of course, you'll find all the rigorously reviewed papers on groundbreaking research for which the AIChE Journal is celebrated. Articles are categorized by:
  • Fluid Mechanics and Transport Phenomena
  • Particle Technology and Fluidization
  • Separations
  • Process Systems Engineering
  • Reactors, Kinetics, and Catalysis
  • Materials, Interfaces, and Electrochemical Phenomena
  • Thermodynamics
  • Bioengineering, Food, and Natural Products
  • Environmental and Energy Engineering
To help you stay ahead of the curve, the Journal has greatly expanded both the number of papers published and the scope of its editorial content, with coverage of such fast developing areas as nanotechnology, biological engineering, and sustainability.
Editor: Stanley I. Sandler, University of Delaware
http://www.aiche.org/publications/aichejournal/index.aspx

Para acabar, esta solução incrível para o aumento da necessidade de Satélites:

Scots Engineers Prove Space Pioneer's 25-Year-Old Theory


by Staff Writers
Glasgow, UK (SPX) Jul 27, 2010
When American space pioneer, Dr Robert L Forward, proposed in 1984 a way of greatly improving satellite telecommunications using a new family of orbits, some claimed it was impossible. But now engineers at the University of Strathclyde's Advanced Space Concepts Laboratory have proved that Forward was right.
The late Dr Forward - a renowned physicist who worked in the United States and from his second home in Scotland - believed it was possible to use 'displaced orbits' to deploy more satellites to the north or south of the Earth's equator, helping to meet the growing demand for communications.
He proposed that the orbit of a geostationary satellite could be pushed above - or below - the usual geostationary ring around the Earth, which follows the line of the equator, by using a large solar sail propelled by the pressure of sunlight. However, critics later claimed that such 'displaced orbits' were impossible due to the unusual dynamics of the problem.
Now graduate student Shahid Baig and Professor Colin McInnes, Director of the Advanced Space Concepts Laboratory, have shown that Forward was in fact correct, in a new paper published in the Journal of Guidance, Control and Dynamics.
http://www.spacemart.com/reports/Scots_Engineers_Prove_Space_Pioneer_25_Year_Old_Theory_999.html
 


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