Researchers at Rensselaer Polytechnic Institute have developed and demonstrated a new type of light emitting diode (LED) with significantly improved lighting performance and energy efficiency. The new polarization-matched LED exhibits an 18 percent increase in light output and a 22 percent increase in wall-plug efficiency.
The push for alternative energy has created a large demand for corn stover, a popular feedstock used to produce cellulosic ethanol, but utilizing these materials, rather than using it as compost, means a loss of soil organic carbon. Researchers have studied the effectiveness of alternative carbon augmentation practices and have reported positive results, as detailed in the November-December 2008 issue of Agronomy Journal.
Low-moving ocean and river currents could be a new, reliable and affordable alternative energy source. A University of Michigan engineer has made a machine that works like a fish to turn potentially destructive vibrations in fluid flows into clean, renewable power.
An Auburn University study sheds new light on just how valuable shade trees are in reducing homeowners' electricity bills during hot summer months.
With the high cost of gasoline and diesel fuel impacting costs for automobiles, trucks, buses and the overall economy, a simple device that attaches to a vehicle's fuel line near the fuel injector and creates an electrical field could boost gas efficiency as much as 20 percent.
A giant perennial grass used as a biofuels source has a much longer growing season than corn, and researchers think they've found the secret of its success. Their findings offer a promising avenue for developing cold-tolerant corn, an advance that would significantly boost per-acre yields.
University of Utah engineers devised a new way to slice thin wafers of the chemical element germanium for use in the most efficient type of solar power cells. They say the new method should lower the cost of such cells by reducing the waste and breakage of the brittle semiconductor.
You probably won't be able to drive down the highway in your own non-polluting vehicle that runs on hydrogen power any time soon. And don't start making plans to power your whole house with expensive hydrogen-based technology in the coming years. But, some day in the not-too-distant future, you might own a cell phone equipped with a hydrogen-powered fuel cell instead of a battery.
A yeast geneticist on the campus of Indiana University-Purdue University Indianapolis (IUPUI) is close to developing mutant yeast for ethanol production that would reduce or eliminate the need to use corn to make the alternative fuel.
Researchers here have found a way to convert ethanol and other biofuels into hydrogen very efficiently. A new catalyst makes hydrogen from ethanol with 90 percent yield, at a workable temperature, and using inexpensive ingredients.
With oil prices skyrocketing, the search is on for efficient and sustainable biofuels. Research published this month in Agronomy Journal examines one biofuel crop contender: corn stover. Corn stover is made up of the leaves and stalks of corn plants that are left in the field after harvesting the edible corn grain. Corn stover could supply as much as 25% of the biofuel crop needed by 2030.
Algae are tiny biological factories that use photosynthesis to transform carbon dioxide and sunlight into energy so efficiently that they can double their weight several times a day, producing oil in the process "" 30 times more oil per acre than soybeans, according to the U.S. Department of Energy. Like soybean oil, the algae oil can be burned directly in diesel engines or further refined into biodiesel.
A new material characterized at the Department of Energy's Oak Ridge National Laboratory could open a pathway toward more efficient fuel cells.
NIST experiments with varying concentrations of nanoparticle additives indicate a major opportunity to improve the energy efficiency of large industrial, commercial, and institutional cooling systems known as chillers.
An analysis of yearly vehicle deaths compared to gas prices found death rates drop significantly as people slow down and drive less. If gas remains at $4 a gallon or higher for a year or more, traffic fatalities could drop by more than 1,000 per month nationwide, according new findings by a University of Alabama at Birmingham researcher.
Researchers have developed the first detailed chemical analysis revealing what processing is needed to transform pig manure derived 'crude oil' into fuel for vehicles or heating. Mass production of this type of biofuel could help consume a waste product overflowing at U.S. farms, but it will require a lot of refining.
A team of researchers from Iowa State University and the University of Hawai'i are developing a process that cleans up and improves the dry-grind ethanol production process. The process uses fungus to reduce energy costs, allow more water recycling and improve a co-product that's used as livestock feed. The American Academy of Environmental Engineers recently awarded the project its 2008 Grand Prize for University Research.
A newly created microbe produces cellulose that can be turned into ethanol and other biofuels, report scientists from The University of Texas at Austin who say the microbe could provide a significant portion of the nation's transportation fuel if production can be scaled up.
A new method called catalytic fast pyrolysis turns plant biomass such as wood and grasses into "green gasoline" using one simple step. The process significantly reduces the cost and production time associated with making gasoline-range biofuels.
Key to Northwest biofuels may include waste among biomass resources.
A growing number of plug-in hybrid electric cars and trucks could require major new power generation resources or none at all"" depending on when people recharge their automobiles. A recent ORNL study examined how an expected increase in ownership of hybrid electric cars and trucks will affect the power grid depending on what time of day or night the vehicles are charged.
Latin American nations could become important suppliers of ethanol for world markets in coming decades, according to an Oak Ridge National Laboratory study released recently.
While sampling blended biodiesel fuels purchased from small-scale retailers, researchers at the Woods Hole Oceanographic Institution found that many of the blends do not contain the advertised amount of biofuel.
Despite increasing popular support for solar photovoltaic panels in the United States, their costs far outweigh the benefits, according to a new analysis by Severin Borenstein, a professor at the University of California, Berkeley's Haas School of Business and director of the UC Energy Institute.
Taking a page out of a science fiction story, researchers from the Woods Hole Oceanographic Institution (WHOI) and Webb Research Corporation (Falmouth, Mass.) have successfully flown the first environmentally powered robotic vehicle through the ocean. The new robotic "glider" harvests heat energy from the ocean to propel itself across thousands of kilometers of water.