Energy

Cheap, Efficient, Flexible Solar Cells – From Nanopillars

There's a new way to fabricate efficient solar cells from low-cost and flexible materials. The new design grows optically active semiconductors in arrays of nanoscale pillars - each a single crystal - with dimensions measured in billionths of a meter.

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

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Geothermal Heat Extraction Process Takes Advantage of New Liquid

Scientists at the Department of Energy's Pacific Northwest National Laboratory have come up with an innovative approach that can safely and economically extract and convert heat from untapped geothermal resources. The heat recovery method makes the most of low-temperature “hot rock” resources.

Posted in: Videos, Geothermal Power, Renewable Energy, Energy, News, GDM

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$32 Million Initiative to Expand Hydropower

U.S. Department of Energy Secretary Steven Chu announced up to $32 million in Recovery Act funding, which is designed to support the deployment of hydropower turbines and control technologies to increase power generation and environmental stewardship at existing non-Federal hydroelectric facilities.

Posted in: Renewable Energy, Energy, Hydroelectric Power, Government Initiatives, Government, Articles, News, GDM

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Virtually Engineering Energy Conversion Plants

Photovoltaic and wind energy plants, hydroelectric power stations, and biogas plants can be complex to design and maintain. In designing a hydroelectric power station, an engineer needs to know what the pressures, temperatures, and fluid flows will be in the facility. Virtual reality makes planning and operation easier.

Posted in: Biomass, Solar Power, Wind Power, Renewable Energy, Energy, Hydroelectric Power, News, GDM

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Quantum-Well Thermophotovoltaic Cells

Thermophotovoltaic cells containing multiple quantum wells have been invented as improved means of conversion of thermal to electrical energy. These cells are expected to be especially useful for extracting electrical energy from combustion, waste-heat, and nuclear sources. Conversion efficiencies more than twice those of prior cells are expected.

Posted in: Energy Efficiency, Thermoelectrics, Energy, Briefs, GDM

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A Low-Cost Manufacturing Solution for CIGS-Based Solar Cells

Though the solar industry today predominately produces solar panels made from crystalline silicon, they remain relatively expensive to make. New players in the solar industry have instead been looking at panels that can harvest energy with CIGS (copper-indium-gallium-selenide) or CIGS-related materials.

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

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Measuring LED and Solid State Lighting Performance

Light emitting diodes (LEDs) and solid state lighting (SSL) products that incorporate LEDs pose many measurement challenges compared with other lighting elements, such as traditional tungsten and fluorescent. Advanced optical radiation measurement equipment and new techniques are often required to determine basic photometric and colorimetric parameters for LEDs and SSL products.

Posted in: Energy Efficiency, Energy, Lighting, Articles, Features, GDM

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