Archive for the ‘solar power’ category: Page 115
Feb 8, 2018
Forget curtains. One day, you could block out glare with smart windows that also charge your phone
Posted by Shailesh Prasad in categories: mobile phones, solar power, sustainability
New material pulls double-duty as shade and perovskite solar cell
By
Feb 2, 2018
Caltech and Grumman partner on Space Based Solar Power Initiative
Posted by Klaus Baldauf in categories: solar power, space travel, sustainability
SSPI approach: • Enabling technologies developed at Caltech • Ultra-light deployable space structures • High efficiency ultra-light photovoltaic (PV) • Phased Array and Power Transmission • Integration of concentrating PV, radiators, MW power conversion and antennas in single cell unit • Localized electronics and control for system robustness, electronic beam steering • Identical spacecraft flying in formation • Target is specific power over 2000 Watts per kilogram. This would cost competitive with ground-based power.
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Jan 26, 2018
Gen-next smart solar windows could produce electricity
Posted by Genevieve Klien in categories: solar power, sustainability
Washington: Scientists have discovered a new material for next-generation smart windows that not only darken automatically when the Sun is too bright but also convert solar energy into electricity.
Researchers at the Lawrence Berkeley National Laboratory (Berkeley Lab) in the US found a form of perovskite that works well as a stable and photoactive semiconductor material that can reversibly switch between transparent and non-transparent state, without degrading its electronic properties.
The scientists made the discovery while investigating the phase transition of the material, an inorganic perovskite.
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Jan 23, 2018
World Bank plans ‘Scaling Solar and Storage’ program — By Tom Kenning | PV Tech
Posted by Odette Bohr Dienel in categories: governance, solar power
“The new Scaling Solar and Storage (SSS) program, which has yet to be formerly announced and is expected to be rolled out over the next couple of years, would work on utility-scale tenders that pair solar PV with battery storage technology.”
Jan 22, 2018
This Hearst ranch has raised cattle since 1865, now it also powers Apple’s headquarters — By Anita Balakrishnan | CNBC
Posted by Odette Bohr Dienel in categories: business, energy, environmental, solar power
“The historic Hearst cattle ranch has become a hybrid solar farm for Apple’s Cupertino campus.”
Dec 27, 2017
Organic Material Set to Make Solar Energy Truly ‘Green’
Posted by Yugal Agrawal in categories: solar power, sustainability
Dec 26, 2017
How a Machine That Can Make Anything Would Change Everything
Posted by Klaus Baldauf in categories: biotech/medical, food, internet, solar power, sustainability
But the dream of the nanofabricator is not yet dead. What is perhaps even more astonishing than the idea of having such a device—something that could create anything you want—is the potential consequences it could have for society. Suddenly, all you need is light and raw materials. Starvation ceases to be a problem. After all, what is food? Carbon, hydrogen, nitrogen, phosphorous, sulphur. Nothing that you won’t find with some dirt, some air, and maybe a little biomass thrown in for efficiency’s sake.
Equally, there’s no need to worry about not having medicine as long as you have the recipe and a nanofabricator. After all, the same elements I listed above could just as easily make insulin, paracetamol, and presumably the superior drugs of the future, too.
What the internet did for information—allowing it to be shared, transmitted, and replicated with ease, instantaneously—the nanofabricator would do for physical objects. Energy will be in plentiful supply from the sun; your Santa Clause machine will be able to create new solar panels and batteries to harness and store this energy whenever it needs to.
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Dec 19, 2017
Paving the way for a non-electric battery to store solar energy
Posted by Saúl Morales Rodriguéz in categories: solar power, sustainability
Materials chemists have been trying for years to make a new type of battery that can store solar or other light-sourced energy in chemical bonds rather than electrons, one that will release the energy on demand as heat instead of electricity — addressing the need for long-term, stable, efficient storage of solar power.
Now a group of materials chemists at the University of Massachusetts Amherst led by Dhandapani Venkataraman, with Ph.D. student and first author Seung Pyo Jeong, Ph.D. students Larry Renna, Connor Boyle and others, report that they have solved one of the major hurdles in the field by developing a polymer-based system. It can yield energy storage density — the amount of energy stored — more than two times higher than previous polymer systems. Details appear in the current issue of Scientific Reports.
Venkataraman and Boyle say that previous high energy storage density achieved in a polymeric system was in the range of 200 Joules per gram, while their new system is able to reach an average of 510 Joules per gram, with a maximum of 690. Venkataraman says, “Theory says that we should be able to achieve 800 Joules per gram, but nobody could do it. This paper reports that we’ve reached one of the highest energy densities stored per gram in a polymeric system, and how we did it.”
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Dec 18, 2017
Using Nanotechnology, not Water, to Clean Solar Panels
Posted by Dan Kummer in categories: nanotechnology, particle physics, solar power, space, sustainability
Although solar panels might appear bright and shiny, in desert environments, where they are most frequently installed, layers of dust and other particles can quickly coat their surface. These coatings can affect the panels’ ability to absorb sunlight and drastically reduce the conversion of the sun’s rays into energy, making it necessary to periodically wash the panels with water. But often, in areas like Nevada, water resources are scarce.
Consequently, NEXUS scientists have turned their attention toward developing technologies for waterless cleaning. NASA has already been using such techniques to wash panels in the lunar and Mars missions, but their developed methodologies prove too expensive for widespread public application. NEXUS scientist Biswajit Das of UNLV and his team are aiming to develop a water-free cleaning technology that will be cost-effective for large-scale photovoltaic generation, whereby they look to nanotechnology, rather than water, to clean the panels. “Our mission is to develop a waterless, or at least a less-water cleaning technique to address the effect of dust on solar panels,” Das says. “Once developed, this method will significantly reduce water use for the future PV generation.”
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