Hydrogen-powered passenger ferry in San Francisco Bay is possible
October 6, 2016 10:56 AM - Sandia Labs
Nearly two years ago, Sandia National Laboratories researchers Joe Pratt and Lennie Klebanoff set out to answer one not-so-simple question: Is it feasible to build and operate a high-speed passenger ferry solely powered by hydrogen fuel cells? The answer is yes.
The details behind that answer are in a recent report, “Feasibility of the SF-BREEZE: a Zero Emission, Hydrogen Fuel Cell High Speed Passenger Ferry.” SF-BREEZE stands for San Francisco Bay Renewable Energy Electric Vessel with Zero Emissions.
Efficient organic solar cells with very low driving force
October 6, 2016 10:39 AM - LINKÖPING UNIVERSITY
It was believed that efficient operation of organic solar cells requires a large driving force, which limits the efficiency of organic solar cells. Now, a large group of researchers led by Feng Gao, lecturer at IFM at LiU, He Yan at the Hong Kong University of Science and Technology, and Kenan Gundogdu at the North Carolina State University have developed efficient organic solar cells with very low driving force.
This implies that the intrinsic limitations of organic solar cells are no greater than those of other photovoltaic technologies, bringing them a step closer to commercialisation.
Non-toxic solvent removes barrier to commercialisation of perovskite solar cells
October 5, 2016 12:15 PM - University of Oxford
Scientists at Oxford University have developed a solvent system with reduced toxicity that can be used in the manufacture of perovskite solar cells, clearing one of the barriers to the commercialisation of a technology that promises to revolutionise the solar industry.
Perovskites – a family of materials with the crystal structure of calcium titanate – have been described as a 'wonder material' and shown to be almost as efficient as silicon in harnessing solar energy, as well as being significantly cheaper to produce.
The Psychology Behind Climate Change Denial
October 5, 2016 06:53 AM - Uppsala University
Climate change is a serious threat to humans, animals, and the earth’s ecosystems. Nevertheless, effective climate action has been delayed, partly because some still deny that there is a problem. In a new thesis in psychology, Kirsti Jylhä at Uppsala University has studied the psychology behind climate change denial. The results show that individuals who accept hierarchical power structures tend to a larger extent deny the problem.
In the scientific community there is a strong consensus that humans have significantly affected the climate and that we are facing serious challenges. But there is a lot of misinformation about climate change in circulation, which to a large part is created and distributed by organised campaigns with the aim of postponing measures that could combat climate change. And there are people who are more prone than others to trust this misinformation.
Previous research has consistently shown that it is more common among politically conservative individuals to deny climate change. In her thesis, Kirsti Jylhä has investigated this further and in more detail. Her studies included ideological and personality variables which correlate with political ideology, and tested if those variables also correlate with climate change denial.
Could California's gridlock generate electricity for the grid?
September 27, 2016 02:05 PM - Yale Environment 360
California is testing whether its heavy traffic can produce not just emissions and air pollution, but electricity. The state’s Energy Commission says it will spend $2 million to examine the potential of using piezoelectric crystals embedded under asphalt as a way to send the energy created by moving cars to the grid.
Stronger turbine blades with molybdenum silicides
September 23, 2016 04:24 PM - National Institute for Materials Science via ScienceDaily
Researchers at Kyoto University have found that molybdenum silicides can improve the efficiency of turbine blades in ultrahigh-temperature combustion systems.
Gas turbines are the engines that generate electricity in power plants. The operating temperatures of their combustion systems can exceed 1600 °C. The nickel-based turbine blades used in these systems melt at temperatures 200 °C lower and thus require air-cooling to function. Turbine blades made out of materials with higher melting temperatures would require less fuel consumption and lead to lower CO2 emissions.
Inexpensive semiconducting organic polymers can harvest sunlight to split carbon dioxide into alcohol fuels
September 23, 2016 09:33 AM - University of Texas, Arlington via ScienceDaily
Chemists at The University of Texas at Arlington have been the first to demonstrate that an organic semiconductor polymer called polyaniline is a promising photocathode material for the conversion of carbon dioxide into alcohol fuels without the need for a co-catalyst.
"This opens up a new field of research into new applications for inexpensive, readily available organic semiconducting polymers within solar fuel cells," said principal researcher Krishnan Rajeshwar, UTA distinguished professor of chemistry and biochemistry and co-Director of UTA's Center for Renewable Energy, Science & Technology.
Why the Increase in Solar-Powered Schools?
June 24, 2016 05:02 PM - Jake DiRe, Triple Pundit
Out of the 125,000 K-12 schools in the United States, over 3,700 are running on solar power. Three-thousands of these schools installed their solar power systems within the past six years, as solar technology continues to become less expensive and more sophisticated.
This trend in powering our schools reflects the growing recognition by district and state officials that photovoltaic electrical systems offer significant financial and environmental benefits. Here are four key reasons why more schools are making this transition.
New generation of high-efficiency solar thermal absorbers developed
June 15, 2016 10:51 AM - University of Bristol Via EurekAlert!
Researchers from the Universities of Bristol and Exeter are one step closer to developing a new generation of low-cost, high-efficiency solar cells. The structure is one of the world's first examples of a tri-layer metasurface absorber using a carbon interlayer.
Gas Stations Close as Fire Rages Near Alberta Oil Sands
June 14, 2016 10:34 AM - Jan Lee , Triple Pundit
The wildfire that roared through Fort McMurray, Alberta, Canada, last May has been called the worst fire in Canadian history. Its devastation is staggering: More than 100,000 residents and nearby workers were evacuated at different stages of the fire, and more than 2,200 square miles of land and 2,400 structures burned in two provinces: Alberta and its eastern neighbor, Saskatchewan. With the fire only 70 percent contained to date, its economic impact is yet to be tallied.