Articles tagged with Wind Power
A new study in the International Journal of Exergy provides a formula to calculate wind turbine performance and optimize energy production. The formula offers a theoretical boost of 20% efficiency at varying wind speeds, reducing wasted energy by 80%.
A new study identifies New York and eastern U.S. cities as prime locations for exploiting high-altitude winds, which contain enough energy to meet world demand 100 times over. The regions match population centers and have high wind power densities, but fluctuating wind strength poses a challenge for large-scale exploitation.
Engineers at Purdue University and Sandia National Laboratories have developed a technique to monitor forces exerted on wind turbine blades, enabling real-time adjustments for optimal efficiency. The system aims to reduce catastrophic damage from high winds and improve overall wind turbine reliability.
A new collection of papers explores how solar energy, winds, asteroid impacts, and changing magnetic fields shaped early Mars' environment. These findings suggest that the planet may have supported life during its history.
The new California Solar Energy Collaborative aims to establish consensus among key stakeholders, develop efficient solar technologies, and create an ambitious energy policy for the state. UC San Diego and UC Davis will utilize the grant to collect existing research, facilitate gap areas, and track evolving solar technology development.
Infrared thermography is a non-destructive testing method that allows researchers to peer several centimeters into the material of wind turbine rotor blades. This technology enables the detection of minor irregularities and delaminated areas that can cause mechanical stresses and lead to premature failure.
Researchers found that only four rest areas and six weigh stations showed promise for wind power generation in Illinois. The study determined grid parity was not achievable due to high electricity costs, but rebates and subsidies made some sites viable.
The article discusses a new book by Joseph Murphy that weaves together Gaelic history, culture, and language with sustainable development and walking. The book tells the story of a 1500 km walk along the Atlantic coast from Ireland to Scotland, combining local experiences with broader themes.
The NCAR forecast system will provide highly detailed, localized weather forecasts to enable utilities to make critical decisions about powering down traditional plants when sufficient winds are predicted. The system will help increase reliance on wind energy while meeting customer needs.
Researchers develop a novel control method to mitigate wind speed variations by leveraging rotor inertia as energy storage. This approach reduces the need for external energy storage facilities, improving overall wind farm efficiency.
Researchers identify ideal locations for low-impact wind farms with high frictional dissipation, reducing turbulence and its effects on local hydrometeorological conditions. By optimizing turbine spacing and rotor designs, wind farm efficiency can be increased and negative impacts minimized.
MIT researchers, led by Chiang Mei, have developed a numerical simulation model that predicts wave forces on devices and motion of the device. The research aims to optimize energy capture and provide data for efficient conversion to electrical energy. The pilot-scale device will be integrated into a new breakwater in Portugal.
German scientists suggest biomass as a major source of energy, meeting global demand sustainably and economically. Afforestation on degraded land can produce enough biomass to replace fossil fuels, reducing CO2 emissions.
Stanford researcher Mark Z. Jacobson finds wind power to be the most promising clean energy source, offering a 99% reduction in carbon emissions and water consumption. In contrast, biofuels, nuclear power, and coal are significantly polluting, causing thousands of deaths per year.
A University of Michigan engineer has created a machine called VIVACE that converts slow-moving ocean and river currents into clean, renewable power. The device works by creating vortex-induced vibrations in the water, which are then converted into mechanical energy and electricity.
A new study found that wind turbines do not significantly affect the distribution of seed-eating birds and corvids. However, common pheasants were the only species whose distribution was impacted by the turbines. This research is crucial for reconciling EU energy targets with biodiversity conservation efforts.
EPA's STAR fellowship program supports promising masters and doctoral candidates, such as Matthias Fripp, who are developing sustainable energy solutions for America. The program also recognizes the work of former fellows, including Toiya Goodlow and Dr. Brandon Jones, who now work at EPA.
Researchers at University of Wisconsin-Madison have developed a process to convert plant sugars into gasoline, diesel, and jet fuel. The new process produces identical molecular compounds to traditional petroleum-based fuels, offering a promising alternative to fossil fuels.
Researchers at the University of Texas at Austin have developed a new carbon-based material called graphene that can store electrical charge in ultracapacitor devices, potentially doubling their capacity. The breakthrough could enable the massive installation of renewable energies like wind and solar power.
The NC State-led FREEDM ERC will develop technology to transform the nation's power grid into a smart grid that can store and distribute energy from renewable sources. This 'Internet for energy' system will enable millions of users to generate their own energy and sell excess back to the power companies.
Researchers found that 90% of deceased bats showed internal hemorrhaging consistent with barotrauma, highlighting the vulnerability of these mammals to wind turbine hazards. The unique respiratory system of bats makes them more susceptible to air pressure drops, which can cause fatal injuries.
Montana State University will incorporate more wind-related topics into existing engineering courses, educating students about wind energy and preparing them for jobs in the industry. The university aims to support Montana's growing wind industry and provide valuable technical experience.
Aeroecology is an emerging field exploring how airborne organisms depend on the lower atmosphere closest to the Earth's surface. This research has significant implications for understanding behavioral, ecological, and evolutionary responses of organisms in complex meteorological conditions.
Scientists have discovered that whale flippers and dolphin tails influence the shape of wind turbine blades, creating a more efficient design. The new design has been shown to reduce drag and increase lift, defying traditional engineering theories.
The RAND Corporation study finds that biomass resources and wind power have the greatest potential to contribute towards reaching the 25 x '25 goal, with significant investments needed in renewable energy technology. Meeting this goal would reduce carbon dioxide emissions and lower long-term oil prices.
Researchers at Fraunhofer-Gesellschaft have developed a new lithium-ion battery with non-flammable polymer electrolytes, enhancing safety and increasing conductivity. The improved batteries are expected to compete with lead batteries in cars within 3-5 years.
A new 'Structural Health Monitoring' (SHM) system uses sensors and signal processing devices to detect cracks and defects in aircraft, pipelines, and wind turbines. The system aims to prevent damage and optimize maintenance with real-time data.
Researchers at MIT are exploring a new method to measure hurricane strength using underwater microphones, which could lead to cheaper early-warning systems. The approach was validated by measurements from Hurricane Gert in 1999, providing accurate results comparable to aircraft-based methods.
A Stanford University study examines California's coast for offshore wind energy potential, estimating that a Northern California site could supply 5% of the state's electricity. However, high water depths and varying wind speeds make it challenging to harness wind power off the coast.
A NASA fleet of spacecraft has made significant discoveries about Northern Lights, revealing giant magnetic ropes and small explosions in the Earth's magnetic field. The THEMIS mission observed a rapidly developing substorm, confirming the existence of these structures and witnessing vivid auroras for over two hours.
Scientists at Stanford University found that connecting wind farms can reduce the variability of wind energy, making it suitable for baseload power. On average, 33% of yearly-averaged wind power from interconnected farms can be used as reliable, baseload electric power.
Wind power variability poses a challenge for grid systems. Researchers are developing methods to measure wind farm capacity contribution and establish energy storage systems to manage this variability. The goal is to enable more efficient integration of wind power into existing power systems.
The Kansas Wind for Schools program has selected several rural schools to receive Skystream 3.7 wind turbines as part of the National Renewable Energy Laboratory's initiative. The small turbines will become part of the curriculum at these schools, teaching students about wind energy and its applications.
Researchers developed a method for assessing wind turbine removal and recycling, considering future impacts up to 2050. The study aims to reduce negative effects of wind power by adopting an interactive approach.
A life cycle assessment reveals that renewable energy sources like solar, wind, and geothermal have valid green credentials in electricity production. However, the efficiency of these systems is comparable only when considering the entire life cycle, not just materials production and running.
Researchers estimate that thousands of wind turbines could generate up to 330 gigawatts of average electrical power off the Mid-Atlantic coast, reducing carbon emissions by 68% and greenhouse gases by 57%. The study's findings suggest a significant potential for offshore wind energy in the region.
A study by Stanford University researchers found that aerosol particles slow down winds, reducing the availability of clean energy from wind power and leading to decreased precipitation. This can result in droughts and reduced water supplies, with potential impacts on global food security and energy systems.
A comprehensive MIT-led study assesses the feasibility of enhanced geothermal systems to increase US geothermal resource recovery. The report finds that heat mining can be economical in the short term and has a lower environmental impact compared to fossil fuels.
A survey conducted by University of Delaware researchers found that over 90% of Delawareans support offshore wind power, even with increased electric bills. The study suggests that increasing public awareness and concern about climate change may contribute to this strong support.
Renewable sources currently provide about 6 percent of all the energy used in the United States. Meeting the 25 percent renewable energy target for electricity and motor fuels together could reduce carbon dioxide emissions from fossil fuel combustion by 15% and displace 2.5 million barrels of oil consumption.
The MIT researcher's design allows for the installation of huge offshore wind turbines in deeper waters, reducing public opposition and increasing electricity production. The floating platforms can be assembled onshore, towed out to sea, and adjusted to stabilize the turbines, resulting in cost savings and improved efficiency.
Montana State University has developed a massive database of wind turbine material tests, spanning over 17 years and involving 150 different composite materials. The MSU/DOE Fatigue Database for Composite Materials is now one of the world's largest open-access libraries on wind energy research.
A study by the University of Sussex and ESRC found that radical niche initiatives in wind energy, organic food, and eco-housing significantly influenced mainstream activities. Although activists' original ideas were not fully adopted, their influence contributed to the development of climate change solutions.
A new open loop control system enables efficient energy conversion in low wind speeds, providing a viable alternative for remote locations. The device, designed by Dr. Andy Knight, is built with cheap and easy-to-find components and can produce electric energy from winds as low as 10 km/h.
A new study maps global wind speeds to identify regions suitable for wind farms, finding consistent winds in the Great Lakes region and along coastal areas. The research suggests that harnessing a fraction of this energy could meet the world's electricity demands, but practical barriers remain.
Researchers found that public opposition to offshore wind projects is driven by concerns about the ocean's aesthetic value and emotional connection. The study suggests that a better understanding of these values can inform a more effective policy framework for offshore wind development.
The University of Houston's Sasakawa International Center for Space Architecture is designing a research facility on the Greenland Summit. The UH team will conduct site evaluations and initiate tests of an experimental scale mockup station to refine the design.
Experts from Oregon State University are pioneering wave power technology, which could become a major contributor to the nation's energy needs. The proposed U.S. Ocean Energy Research and Demonstration Center would evaluate existing systems and test new ones.
Researchers have made significant discoveries about the impact of human activities on the environment. A new study used satellite observations to estimate nitrogen oxide emissions from ships, which contribute approximately 23 gigagrams per year into the troposphere. Additionally, a seismic analysis technique has provided unprecedented ...
A new study by UC Berkeley finds that renewable energy generates more jobs per megawatt installed than the fossil fuel-based sector, with potential benefits for all states. Investing in renewables could create up to 240,000 new jobs by 2020, while reducing trade deficits and reestablishing US leadership in energy technology.
Research shows that wind turbines can be integrated into electricity grids without major issues, but the type of turbine affects measures needed. Simulation models helped investigate how wind turbines impact grid stability, revealing two fundamental differences from conventional power stations.
A continental SuperGrid could meet the US energy demands in the 21st century by delivering both electrical power and hydrogen fuel. The concept links urban centers to remote power sources, reducing transmission bottlenecks and improving system reliability.
According to L. Hunter Lovins, companies investing in renewable energy will gain a marketing edge as consumers notice environmental benefits. The California Public Employees' Retirement System is screening investments, leading to expected changes in US energy policy.
The study highlights the importance of developing revolutionary technologies for energy production, distribution, storage, and conversion to reduce carbon dioxide emissions. Researchers emphasize the need for a multifaceted approach to address the issue, as single solutions are unlikely to be effective.
The institute will revamp the system for collecting generation reports, prepare white papers on wind energy potential and problems, and establish a program to map out California's wind resources. Data on wind resources is over 20 years old, highlighting the need for better forecasting.
Modern wind turbines equipped with power electronics converters can boost voltage and stabilize mains voltage, even in the absence of wind. The technology uses reactive power compensation to adjust voltage without significant energy loss.
Wind power has dropped in cost to 3-4 cents per kilowatt-hour, making it less expensive than coal energy. Shifting from coal to wind could address health, environmental, and energy problems, including reducing greenhouse gas emissions.
Decentralized energy technologies, such as solar and wind power, are being implemented in developing countries to address electricity shortages. The symposium aims to discuss recent developments and barriers to the wider adoption of renewable energy sources.
The Mexico Renewable Energy Program, sponsored by Sandia National Laboratories, has installed nearly 200 photovoltaic and wind energy projects in eight states, providing energy to over 9,000 people. The program aims to expand markets for US industry, increase agricultural production, and combat greenhouse gas emissions.