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Items with tag:"technology"

Cheaper, better solar cell is full of holes

Section: News

Category: Solar Energy

2010-09-04 19:37:26

by Bill Scanlon

9073_silver_wafer_solar_cellA new low-cost etching technique developed at the U.S. Department of Energy's National Renewable Energy Laboratory can put a trillion holes in a silicon wafer the size of a compact disc. As the tiny holes deepen, they make the silvery-gray silicon appear darker and darker until it becomes almost pure black and able to absorb nearly all colors of light the sun throws at it. At room temperature, the black silicon wafer can be made in about three minutes. At 100 degrees F, it can be made in less than a minute. The breakthrough by NREL scientists likely will lead to lower-cost solar cells that are nonetheless more efficient than the ones used on rooftops and in solar arrays today. R&D Magazine recently awarded the NREL team one of its R&D 100 awards for Black Silicon Nanocatalytic Wet-Chemical Etch. Called "the Oscars of Invention," the R&D 100 awards recognize the most significant scientific breakthroughs of the year.

NREL  breakthrough  solar cell  technology 

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NREL solar technology will warm air at 'home'

Section: News

Category: Solar Energy

2010-08-29 19:04:19
by Heather Lammers

9061_transpired_air_solar_technology

Sometimes the way back home isn't straightforward. But once you find your way, you know you'll be welcomed with open arms. Transpired solar air collector technology, developed at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) in the 1990s, recently "found its way home" and is now an integral part of the comfort heating system of the new Research Support Facility (RSF).

"The solar collector is really important to the building." Philip Macey, RSF project manager for Haselden Construction, said. "It's the way we get free pre-heated warmed air."

Commercial and industrial buildings in the U.S. have a specific need when it comes to ventilation systems and heating. Although having fresh air inside a building always is desirable, drawing fresh air into a building on a crisp winter day can mean huge amounts of energy is required to heat that air to make it feel comfortable. In fact, 13 percent of the energy used in the U.S. goes to heating residential and commercial buildings.

home  solar energy  technology  transpired solar air collector 

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Wind is set to be the big green winner in the EU

Section: News

Category: Wind Energy

2010-08-24 15:06:49
9047_wind_energy_big_green_winner_euWind energy is set to be the big technological winner in Europe over the next 10 years, as EU countries get down to the serious work of meeting renewable energy targets, reports the Danish Energy Association in its daily newsletter. The EU has set the goal that 20% of its energy needs will be met by renewable energy by 2020, and according to a report from environmental news and information service ENDSEurope, wind energy is set to be a bigger contributor to the green energy mix than solar power and hydro power combined. Given that 70% more energy is obtained from hydro power than from wind power at the present time, the forecast of wind's future dominance is highly noteworthy. Denmark has long enjoyed a leading position in the wind energy sector, but although the decision has been taken to build the country's biggest offshore wind farm yet - the 400 MW Anholt wind farm - the government has no other big initiatives planned in this area over the next 10 years, unlike the UK, Germany, Spain and The Netherlands, which are putting major investments into wind energy. EU  technology  wind energy  winner 

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NREL seeks design tools for better car batteries

Section: News

Category: Energy Savings

2010-08-24 15:02:26

9046_nrel_battery_electric_vehicleThe U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) is seeking proposals to create computer models to help build and improve electric drive vehicle (EDV) batteries. The goals for the design tools are to shorten the prototyping and manufacturing process, to improve overall performance, safety, and battery life and lower costs. The request for proposals for "Development of Computer Aided Design Tools for Automotive Batteries" and related documents are available online at http://www.nrel.gov/business_opportunities/solicitations_rfps.html. Proposals are due September 14, 2010. The award amount that companies can apply for is up to $7.5 million with a 50 percent cost share required bringing the total possible project amount up to $15 million over three years. EDVs - commonly known as hybrid electric vehicles, plug-in hybrid electric vehicles, and electric vehicles - have the potential to significantly reduce petroleum consumption and dependence on imported oil while improving emission of greenhouse gases and pollutants. NREL is DOE's primary national laboratory for renewable energy and energy efficiency research and development. NREL is managed and operated for DOE by The Alliance for Sustainable Energy, LLC.

Source: NREL, Image: Freefoto.com

NREL  battery  electric vehicle  technology 

State funding to bring Danish fuel cell technology to market

Section: News

Category: Energy Savings

2010-08-05 14:38:58

8995_denmark_funding_fuel_cell_topsoeThe Danish Energy Agency has given DKK 54.5 million in support funding to Topsoe Fuel Cell and the National Laboratory for Sustainable Energy (Risø DTU) in order to bring prototype ceramic fuel cells to market by 2012, writes Energy-Supply.dk. Ceramic fuel cells, otherwise known as solid oxide fuel cells or SOFC, represent an efficient technology for electricity production. SOFCs have a relatively high operating temperature (around 700 degrees C), which makes them more suitable for fixed site applications. Topsoe Fuel Cell and Risø DTU have worked closely on SOFC development for a number of years, and have made considerable technological progress. The new funding will be used to continue development and demonstration work in order to prepare for commercialisation of prototypes.

Denmark  fuel cell  funding  technology 

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