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quinta-feira, 17 de junho de 2010

Notícias

Mias perto ainda da Fusão. 30.000 Joules com cada pulso de fusão:
Lawrenceville Plasma Physics High Yield Pulses to Megawatt Generators
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Lawrenceville Plasma Physics (LPP) has a goal of generating 30,000 joules with each nuclear fusion pulse. This would be net energy with conversion to elecricity. So if 100,000 joules was put in from the capacitors then they would need say 200,000 joules back and convert that to 130,000 joules. 100,000 joules for the next shot and 30,000 as excess energy. they are currently only around the 1 joule level. In April it was 0.1 joule, but in May the current increased to 1 megaamp which suggests about 1 joule output.

LPP plans to then increase the pulse rate to 60 pulses per seconds. It would be producing 1.8 million joules per second.

A one megawatt generator produces one million joules per second. (a watt is a joule/ second)

LPP was also trying to get up to 100,000 joules in each pulse. 60 such pulses would be 6 million joules per second, which if converted at with only about 20% loss would be equal to a 5 megawatt generator.

31.536 million seconds per year * 30,000 joules * 60 pulses per second / 3600 seconds =
8760 hours * 60 * 30,000 watt hours = 15.768 million Kilowatt hours







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http://nextbigfuture.com/2010/06/lawrenceville-plasma-physics-high-yield.html
Progressos na Des-Salinização da Água do Mar:


Saltwork Technologies Desalination and Efficiency of Other New Desalination Approaches
Saltworks' patent pending technology employs an innovative Thermo-Ionic™ energy conversion system that uses up to 80 per cent less electrical/mechanical energy relative to leading desalination technologies. The energy reduction is achieved by harnessing low temperature heat and atmospheric dryness to overcome the desalination energy barrier. Saltwater is evaporated to produce a concentrated solution. This solution, which has concentration gradient energy, is fed into Saltworks' proprietary desalting device to desalinate either seawater or brackish water. Some electrical energy is used to circulate fluids at a low pressure, yet the bulk of the energy input is obtained through the evaporation of saltwater.
http://nextbigfuture.com/2010/06/saltwork-technologies-desalination-and.html

Grafenos, o futuro da Electrónica:

Doping Graphene
Dopant chemicals adhere to a graphene sheet, modifying its properties for the development of ultra small and fast electronic devices. Credit: American Physical Society
by Staff Writers



College Park MD (SPX) Jun 07, 2010
An organic molecule that has been found to be effective in making silicon-based electronics may be viable for building electronics on sheets of carbon only a single molecule thick. Researchers at the Max Plank Institute for Metals Research in Stuttgart report the advance in a paper appearing online in the journal Physical Review B on June 1.
Ultrathin carbon layers known as graphene show promise as the basis for a host of extremely small and efficient electronic devices. But in order to create a useful component, the electronic properties of materials like silicon or graphene must be tailored through a doping process.
http://www.spacedaily.com/reports/Doping_Graphene_999.html

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