Energy

Researchers Striving to Cut Waste When Slicing Silicon

A filigree wire is standardly used to slice silicon blocks (ingots) into paper-thin wafers for solar cells. This wire can cut through the ingot at a speed of up to 60 km/h. Several hundred kilometers long, the wire is arranged in such a way that the ingot is sliced into hundreds of wafers simultaneously. The process takes around six hours and the resultant slices are approximately 180 µm thick. Researchers are setting out to reduce this thickness, and therefore reduce waste.

Posted in: Solar Power, Energy Efficiency, Energy, News, GDM

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Process Cleans Wastewater, Generates Electricity, Desalinates Seawater

A team of researchers from the U.S. and China modified a microbial fuel cell - a device that uses naturally occurring bacteria to convert wastewater into clean water producing electricity - so it could desalinate salty water. The new process cleans wastewater, generates electricity, and removes 90 percent of salt from brackish water or seawater.

Posted in: Pollution, Remediation Technologies, Green Design & Manufacturing, Energy Efficiency, Energy, News, GDM

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Emitters Provide Flexibility

Philips Lumileds (San Jose, CA) expanded its LUXEON® Rebel family of LEDs with nine new emitters designed for illumination solutions such as recessed lighting, street lamps, and retrofit bulbs. The new LEDs meet ENERGY STAR® requirements.

Posted in: Energy Efficiency, Energy, Lighting, News, Products, GDM

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Ethanol Funding Opportunity

DOE announced the availability of up to $5.5 million from the American Recovery and Reinvestment Act to increase the use of higher ethanol blends up to E85 (85% ethanol/15% gasoline) by expanding refueling infrastructure.

Posted in: Alternative Fuels, Green Design & Manufacturing, Biomass, Renewable Energy, Energy, Transportation, Government Initiatives, Government, News, GDM

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Green Aircraft Contest Takes Off

Today, the NASA Innovative Partnerships Program and the Comparative Aircraft Flight Efficiency (CAFE) Foundation officially announced the Green Flight Challenge. The flight efficiency competition is for aircraft that can average at least 100 mph on a 200-mile flight, while achieving greater than 200 passenger miles per gallon.

Posted in: Alternative Fuels, Green Design & Manufacturing, Energy Storage, Solar Power, Energy Efficiency, Energy, Transportation, News, GDM

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Reinventing the Tuktuk

In large cities across Asia, auto rickshaws (tuktuks) are one of the most important means of transportation. These tuktuks produce considerable CO2 emissions and air pollution, and their drivers are underpaid. Students participating in the Hybrid Auto Rickshaw project sought to cut CO2 emissions by 40%, while improving the economic positions of drivers.

Posted in: Pollution, Green Design & Manufacturing, Greenhouse Gases, Energy Efficiency, Energy, Transportation, News, GDM

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Creating "Cool" Cars

Operating the air conditioning is the largest auxiliary energy drain on cars. In December 2008, DOE announced a project to study and develop thermoelectric heating and cooling systems. As partners in the project, NREL will team up with Ford to research efficient ways of cooling vehicles.

Posted in: Energy Efficiency, Thermoelectrics, Energy, Transportation, News, GDM

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