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Another chapter in a very long EEStory

Another chapter in a very long EEStory | Sustainable Energy | Scoop.it

So what’s going on here? As someone who has followed this company closely for eight years, it’s still difficult to say. What’s clear is that EEStor is the story that refuses to die, and given the company’s ambitious goals, that’s could be viewed as a good thing.

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Atmospheric Vortex Engine

An atmospheric vortex engine (AVE) uses a controlled vortex to capture mechanical energy produced when heat is carried upward by convection in the atmosphere. A tornado-like vortex is produced by admitting warm or humid air tangentially into a circular arena. Tangential entries cause the warm moist air to spin as it rises forming an anchored convective vortex. The work of convection is captured with turbines located at ground level around the periphery of the arena. The heat source can be solar energy, warm water or waste heat.

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Migration To Smart-Grid Requires New Thinking

Migration To Smart-Grid Requires New Thinking | Sustainable Energy | Scoop.it

No portion of the electric power grid has been impacted more by grid modernization (that is, the “smart grid”) than the electric distribution system. A central part of this transformation is the distribution management system (DMS), which integrates numerous remote monitoring and central control facilities with enterprise-level systems to optimize distribution system performance and accomplish a variety of business goals. At the same time, distributed energy resources are often connected to the grid at the distribution level, and distribution operational requirements are impacted by their presence. The power inverters that connect solar photovoltaic and battery resources to the grid are highly capable devices with advanced message processing and fast power control and nearly instant response to received commands and monitored conditions. This white paper describes ongoing research at the Electric Power Research Institute (EPRI) that is exploring various ways in which the DMS can use these resources more effectively and help in accomplishing the 21st century objectives of electric distribution utilities.

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Rescooped by Hans De Keulenaer from Cool Future Technologies
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Metallic nanostructure triples organic solar cells efficiency

Metallic nanostructure triples organic solar cells efficiency | Sustainable Energy | Scoop.it
Princeton researchers have found a simple and economic way to nearly triple the efficiency of organic solar cells, the cheap and flexible plastic devices that many scientists believe could be the future of solar power.

 

Chou said the research team used nanotechnology to overcome two primary challenges that cause solar cells to lose energy: light reflecting from the cell, and the inability to fully capture light that enters the cell. With their new metallic sandwich, the researchers were able to address both problems.

 

The sandwich – called a subwavelength plasmonic cavity – has an extraordinary ability to dampen reflection and trap light. The new technique allowed Chou's team to create a solar cell that only reflects about 4 percent of light and absorbs as much as 96 percent...

 

( Get the whole article by clicking on the headline linked to the original... )

 


Via Sepp Hasslberger
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cyneth's comment, December 29, 2012 8:19 PM
Hi Sepp, would love to hear your thoughts - given your interest in GMO toxicity and related environmental and health issues - http://www.eeb.org/documents/090713-OECD-environmental-Brief.pdf
Sepp Hasslberger's comment, January 3, 2013 4:56 AM
I agree that there are parallels between nanotech and GMO. Both are largely untested for their health impacts, both are suspected to be damaging to the environment and human health, and they are promoted by powerful financial interests with the goal of making lots of money. It is a very shakey combination. Concerns over health and environment will eventually impede progress, unless addressed seriously.
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New Compressed Air Energy Storage System Could Deliver Double ...

New Compressed Air Energy Storage System Could Deliver Double ... | Sustainable Energy | Scoop.it

The technology is the brainchild of founder Danielle Fong, who initially wanted to use compressed air to power scooters, but has since turned her attention to a larger order of storage: grid-scale.


While compressed air storage isn't a new invention, by any means, Fong's innovations greatly improved the efficiency of this type of system, which has been hampered by efficiency losses of up to 50%. Fong's improved version uses a mist of water sprayed into the air storage tanks, which acts to absorb and store the heat generated from the compression (and release it on expansion), allowing the LightSail system to achieve a 90% thermodynamic efficiency in the process, and a 70% overall round-trip efficiency.

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Rescooped by Hans De Keulenaer from Solar Energy projects & Energy Efficiency
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The Big Question: What Can We Hope for in the Next 12 Months with Solar Energy?

The Big Question: What Can We Hope for in the Next 12 Months with Solar Energy? | Sustainable Energy | Scoop.it

Based on improvements in cell efficiencies and production economies of scale, today’s manufacturing cost per watt can range from as low as US$0.82 to $1.05. With a continuous progression of cost reduction inherent in production, supply chain and module technologies, the reality of mainstream global grid parity is close. In fact, continuing cost declines in PV power production are enabling unsubsidised markets to grow in emerging economies and in meeting the peak power demands being amplified with the decommissioning of old, polluting power stations. In the US we see homeowners seizing the initiative, one rooftop at a time, to break free of the wired world.


Via Pol Bacquet
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Rescooped by Hans De Keulenaer from Amazing Science
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New study: There is enough wind potential on Earth's surface to power human civilization 100 times over

New study: There is enough wind potential on Earth's surface to power human civilization 100 times over | Sustainable Energy | Scoop.it

At the moment, wind power supplies about 4.1 percent of electric power in the United States. Still a bit player. Yet there’s a whole lot of untapped wind left in the world. Wind whipping through the Great Plains. Wind gusting off the shores. Wind circulating high up in the sky. So what would happen if we tried to harvest all of that wind?

 

We’d have enough energy to power the world. At least in theory. A new study published this week in Nature Climate Change finds that there’s enough wind potential both on the Earth’s surface and up in the atmosphere to power human civilization 100 times over. Right now, humans use about 18 terawatts of power worldwide. And, technically, the study found, we could extract about 400 terawatts of wind power from the Earth’s surface and 1,800 terawatts of power from the upper atmosphere.

 

Even the most optimistic near-term projections for wind power, however, tend to be more restrained. In 2008, the U.S. Department of Energy released a comprehensive report estimating that wind power could provide, at most, 20 percent of U.S. electricity by 2030. And for that to happen, the cost of wind power would have to keep plunging, the number of turbines built would have to steadily increase by about 14 percent each year, and utilities would have to build new transmission lines to accommodate the extra energy.


Via Dr. Stefan Gruenwald
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9 Energy Innovations that Make the Future Brighter!

9 Energy Innovations that Make the Future Brighter! | Sustainable Energy | Scoop.it
I want to share with you some of the things that have made me excited about the future of clean energy. I hope you'll find them as cool as I do!
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Rescooped by Hans De Keulenaer from Sustainable Technologies
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NASA researchers aim to help get airborne wind power systems off the ground

NASA researchers aim to help get airborne wind power systems off the ground | Sustainable Energy | Scoop.it
There are two basic types of kite-based airborne wind-energy systems. “Flygen” systems see turbines built into the kite that generate the electricity and feed it via a tether to a storage or distribution device on the ground. The second features a ground-based generator that is powered by the reeling out of the tether as the kite catches the wind. By tacking the kite upwind like a sailboat, the periodic reeling-in phase takes much less energy – around 10 percent – than is produced by the reeling-out phase, resulting in a 90 percent net energy gain
Via Kalani Kirk Hausman
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Why technology and energy efficiency will not save the planet « It's ...

Why technology and energy efficiency will not save the planet « It's ... | Sustainable Energy | Scoop.it
David Owen, author of The Conundrum: How Scientific Innovation, Increased Efficiency, and Good Intentions Can Make Our Energy and Climate Problems Worse, would go with D. His theory is that technological advances, ...
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Rescooped by Hans De Keulenaer from Alternative Energy Sources
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3D Solar Structures Create More Power in Small Spaces - Environment - GOOD

3D Solar Structures Create More Power in Small Spaces - Environment - GOOD | Sustainable Energy | Scoop.it

These 3D structures don’t look like the rooftops and fields of solar panels being erected all over the world. And they don’t behave quite like them, either. For a given base area, they’re up to 20 times more effective at capturing solar energy than a flat solar panel. They also capture more energy when the sky is overcast, and they produce energy at a more even rate throughout the day


Via Mike Carrington
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Clean Energy Innovation Study

Google's energy team developed aggressive "breakthrough" cost/performance levels for solar photovoltaics (PV), concentrated solar power (CSP), on-shore and off-shore wind, geothermal including Enhanced Geothermal Systems, carbon capture and sequestration (CCS), nuclear, Plug-In Hybrid Electric Vehicles (PHEV), Hybrid Electric Vehicles (HEV), Battery Electric Vehicles (EV), rapid and long discharge grid-storage, and natural gas.

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French Firm Launches Floating Solar Power System to Market

French Firm Launches Floating Solar Power System to Market | Sustainable Energy | Scoop.it

The Hydrélio system will be best used in unused stretches of water, such as quarry lakes, irrigation ponds, water treatment plant lagoons and dams, Ciel et Terre said. “This new floating solar power generation concept addresses the problems of land availability and landscape impacts that large-scale land-based solar power generation projects come up against,” it said. “It makes it possible to conserve land that can be put to other uses, and to convert unused stretches of water into spaces dedicated to renewable electricity production. These stretches of water cover substantial areas.”

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Stanford Researchers Make Flexible Solar Cells that Stick to Just About Any Surface

Stanford Researchers Make Flexible Solar Cells that Stick to Just About Any Surface | Sustainable Energy | Scoop.it

Researchers led by Xiaolin Zheng, a professor of mechanical engineering at Stanford University, demonstrated a way to transfer the active materials of the solar cell from a rigid substrate onto another surface, such as a sheet of paper or plastic, the roof of a car, or the back of a smartphone. As with other solar cells, wires would then be connected to deliver power, but flexible solar cells could be used on curved surfaces, and, because they’re lightweight, they would be easier to install than conventional panels.

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Rescooped by Hans De Keulenaer from Sustain Our Earth
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Top 10 New Energy Technologies of 2012

Top 10 New Energy Technologies of 2012 | Sustainable Energy | Scoop.it
a look at the evolution of energy over the year. Here we list the ten top new developments which have huge potential for the future, from solar roadways, to volcanoes

Via SustainOurEarth
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Rescooped by Hans De Keulenaer from Trends in Sustainability
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Technology harvests energy from railroad train vibrations

Engineers have won a national award for an innovative energy harvester that has the potential to save millions of dollars in energy costs for railroads while reducing carbon dioxide emissions.

 

The team's work, "Mechanical Motion Rectifier (MMR) based Railroad Energy Harvester," was awarded "Best Application of Energy Harvesting" at the Energy Harvesting and Storage USA 2012 conference, held in Washington, DC on November 7-8, 2012.
The Stony Brook team, led by Professor Lei Zuo and two graduate students Teng Lin and John Wang from the Department of Mechanical Engineering and Advanced Energy Research and Technology Center, developed a new type of energy harvester that converts the irregular, oscillatory motion of train-induced rail track vibrations into regular, unidirectional motion, in the same way that an electric voltage rectifier converts AC voltage into DC.

 

Professor Zuo estimates that the invention could save more than $10 million in trackside power supply costs for railroads in New York State alone, along with a reduction of 3000 tons per year of CO2 and a half million dollars of electricity savings.


Via Olive Ventures
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Rescooped by Hans De Keulenaer from Développement durable et efficacité énergétique
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Introduction to Trigeneration Systems

Introduction to Trigeneration Systems | Sustainable Energy | Scoop.it
Trigeneration is one step ahead of cogeneration that is the residual heat available from a CHP system.

Trigeneration refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a biomass fuel or a solar heat collector. Conventional coal or nuclear-powered power stations convert only about 33% of their input heat to electricity. The remaining 67% emerges from the turbines as low-grade waste heat with no significant local uses so it is usually rejected to the environment.
Via Stephane Bilodeau
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Rescooped by Hans De Keulenaer from Développement durable et efficacité énergétique
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Danish start-up Floating Power Plant’s hybrid wave+wind floating test plant

Danish start-up Floating Power Plant’s hybrid wave+wind floating test plant | Sustainable Energy | Scoop.it
NordicGreen Nordic Cleantech - Cleantech Startups, Innovators and Investors in the Nordic, the Baltic and the Arctic regions.
Via nordicgreen, Stephane Bilodeau
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Solar Concentrator Design Enables Reduction of PV Surface Area by a Factor of 1000

Solar Concentrator Design Enables Reduction of PV Surface Area by a Factor of 1000 | Sustainable Energy | Scoop.it
One of the semifinalists in the 2012 CleanTech Open is developing a unique solar concentrator that is capable of reducing the surface area needed for photovoltaic (PV) panels by a factor of 1000, can harvest the thermal energy generated in its enclosed design, and is made from 50% post-consumer recycled plastic.

According to SolenSphere, their device produces electricity at almost 40% efficiency, and when combined with the thermal energy captured by the concentrator, approaches a total electrical and heat energy efficiency of 72%.
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MIT researchers develop chip that can harvest energy from multiple sources

MIT researchers develop chip that can harvest energy from multiple sources | Sustainable Energy | Scoop.it
We've seen a number of different devices that can harvest energy from various sources, but none quite like this new chip developed by...
Via Tony Sacksteder, Kalani Kirk Hausman
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Rescooped by Hans De Keulenaer from R.E.S Renewable Energy Sources
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New IEA report shows technology can transform energy system but emphasises need for decisive policy action now

New IEA report shows technology can transform energy system but emphasises need for decisive policy action now | Sustainable Energy | Scoop.it

A host of new technologies is ready to transform the energy system, offering the potential to drastically reduce carbon emissions, enhance energy security and generate a huge investment return, the International Energy Agency (IEA) said in its flagship energy technology publication launched today.

 


Via Roberto Bogge
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Rescooped by Hans De Keulenaer from Solar Energy projects & Energy Efficiency
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New Hybrid Solar Cells Are 25 Percent More Efficient

New Hybrid Solar Cells Are 25 Percent More Efficient | Sustainable Energy | Scoop.it

April 23, 2012

Cambridge scientists create efficient photovoltaic solar cells using a hybrid design.

Advancements in photovoltaic cells have been phenomenal over the years, but sadly we are still a long way from having a universally efficient solar power system in every home and commercial application. Fortunately for the future, scientists continue to find methods to create cheaper, more efficient systems that will pave the way for the future of sustainable energy.


Via Pol Bacquet
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Are Hybrid Ribbons the Future of Renewables?

Are Hybrid Ribbons the Future of Renewables? | Sustainable Energy | Scoop.it

Recently, a research team in the UK has combined renewables to form energy-generating ribbons with great potential. The team, from the Institute for Materials Research and Innovation at the University of Bolton near Manchester in the UK, considered the fact that weather, especially in Britain, is highly unpredictable and decided to make a material that used more than one type of weather to produce electricity.

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