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Offshore Floating Energy Islands

February 12, 2008 - 04:56:33 PM

Offshore Energy Island

The concept - creating artificial islands to collect wind, wave and solar power in the tropics - is based on the work of Jacques-Arsène d’Arsonval, a 19th-century French physicist, who envisioned the idea of using the sea as a giant solar-energy collector.

Inspired by Jacques-Arsène d’Arsonval, architect and engineer Dominic Michaelis, his son Alex Michaelin (also an architect), and Trevor Cooper-Chadwick are developing a new technique called Ocean Thermal Energy Conversion (OTEC) that takes advantage of differences in temperature between the ocean surface sea (up to 29°C in the tropics) and water a kilometer down (which is typically 5°C). Here’s how it works: warmer surface water is used to heat liquid ammonia, converting it into vapor, which expands to drive a turbine — which in turn produces electricity. The ammonia is then cooled using cold water from the ocean depths, returning it into a liquid state so the process can start all over again.  READ MORE »


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Company Brings Sustainable Light and Power to 1000s of Bangladeshi villages

December 21, 2007 - 02:04:40 PM

 

Grameen Shakti, under its Managing Director Dipal Barua, has installed more than 110,000 solar home systems in rural Bangladesh. It has shown that solar energy applications can be scaled up massively and rapidly to provide an affordable and climate-friendly energy option for the rural poor.

The company

Grameen Shakti (shakti meaning "energy" in Bengali) was created in 1996 as a not-for-profit company under the Grameen Bank. The goal of Grameen Shakti is to promote and supply renewable energy technology at an affordable rate to rural households of Bangladesh. Thus, their work not only focuses on the technical and capacity-building sides of renewable energy promotion. They have also adopted the Grameen Bank's experience in micro financing to make renewable energy applications affordable for poor rural people.  READ MORE »


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Solar Bottle is winner of Index:2007 Award

October 01, 2007 - 10:06:30 PM

One sixth of the world's population has no access to safe drinking water, increasing their risk of waterborne diseases such as diarrhea, cholera, typhoid fever, Hepatitis A and dysentery.
When attending an exhibition under the theme “H2O” at Milan's International Furniture Fair, Meda and Paz learned about the SODIS system, a simple, low-cost solution for treating drinking water at a household level. Contaminated water is filled into transparent plastic bottles. When exposed to full sunlight for six hours, the pathogens in the water are destroyed.
Meda and Paz decided to design a container that brings the best out of the SODIS system, and the result is Solar Bottle, which has one transparent face for UV-A + infrared rays collection and one aluminium color to increase the reflections. The high ratio surface/thickness of the low cost four liter container improves the performance of solar disinfection and its flat shape makes it stackable and facilitates storage. A handle makes it possible to regulate the angle for best solar exposition and ensures easy transportation.

The award in the "Home" category was presented to Alberto Meda & Francisco Gomez Paz by Mr. Brian Mikkelsen, Minister for Culture in Denmark and Peter Lund, CEO of Royal Copenhagen.  READ MORE »


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Solar Cells using Synthetic Light Harvesting Pigments Function Well in Low Light

July 29, 2007 - 12:15:42 AM


Dr. Wayne Campbell.
(Credit: Image courtesy of Massey University)

 

Solar cell technology developed by New Zealand's Massey University’s Nanomaterials Research Centre will enable New Zealanders to generate electricity from sunlight at a 10th of the cost of current silicon-based photo-electric solar cells.

The synthetic dyes are made from simple organic compounds closely related to those found in nature. The green dye is synthetic chlorophyll derived from the light-harvesting pigment plants use for photosynthesis.  READ MORE »


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Carbon Nanotubes Combined with Buckyballs Produce Cheap Solar Cells

July 27, 2007 - 06:14:52 PM

Researchers at New Jersey Institute of Technology (NJIT) have developed an inexpensive solar cell that can be painted or printed on flexible plastic sheets. "The process is simple," said lead researcher and author Somenath Mitra, PhD, professor and acting chair of NJIT's Department of Chemistry and Environmental Sciences. "Someday homeowners will even be able to print sheets of these solar cells with inexpensive home-based inkjet printers. Consumers can then slap the finished product on a wall, roof or billboard to create their own power stations."

Via: Reality Sandwich at http://www.realitysandwich.com/here_comes_sun -- Above Excerpted from Science Daily at http://www.sciencedaily.com/releases/2007/07/070719011151.html  READ MORE »


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Leonardo DiCaprio's Film : THE 11th HOUR opens in August

July 27, 2007 - 02:53:32 PM


With the help of over fifty of the world's most prominent thinkers and activists, including reformer Mikhail Gorbachev, physicist Stephen Hawking, and Nobel Prize winner Wangari Maathai, “The 11th Hour” documents the grave problems facing the planet's life systems. Global warming, deforestation, mass species extinction, and depletion of the oceans' habitats are all addressed.

However, the most powerful element of “The 11th Hour” is not a portrait of a planet in crisis, but an offering of hope and solutions. The film ends with a call for restorative action through reshaping human activity.

“The 11th Hour” is opening on August 17th in New York and Los Angeles. On the 24th it opens in other cities, and in the following weeks across the country. It would be great if you could go see it and bring a friend. You can go to www.11thhouraction.com to get more information on the movie and when it will play near you.

We need the message of this movie to hit as far and wide as possible.The hope is us. Let's begin. Thank You, Leonardo DiCaprio LeonardoDiCaprio@11thhouraction.com

Please take a look at the trailer here: http://www.11thhouraction.com/trailer  READ MORE »


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