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Archive for the ‘sustainability’ category: Page 450

Jul 25, 2018

Novel membrane advances low-cost, grid-scale energy storage

Posted by in categories: solar power, sustainability, transportation

Oak Ridge National Laboratory scientists have developed a crucial component for a new kind of low-cost stationary battery system utilizing common materials and designed for grid-scale electricity storage.

Large, economical electricity storage systems can benefit the nation’s grid in numerous ways: balancing loads between peak and off-peak demand times; supplying energy during outages; storing electricity from fluctuating sources like wind and solar power; and accommodating extreme fast charging of electric vehicles.

The grid chiefly relies on hydropower facilities for , although stationary systems using lithium-ion batteries are increasing. However, lithium is expensive and mostly sourced from countries outside the United States.

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Jul 24, 2018

Artificial intelligence saves water for water users associations

Posted by in categories: climatology, robotics/AI, sustainability

Agriculture uses 70 percent of the water in the world, and this appears to be an upward trend regarding water needs. As the demand in other industry sectors is also increasing, and the effects of climate change exacerbate water shortages, water saving measures have become an unavoidable challenge for maintaining the sector and preserving life.

Agronomy researcher Rafael González has developed a model to predict in advance the that users will need each day. This tool came about from a drive to ally with water resource sustainability.

The model applies artificial intelligence techniques including fuzzy logic, a system used to explain the behavior of decision making. It also mixes variables that are easier to measure, like agroclimatic ones or the size of the plot of land to be watered, with other more complicated variables, like traditional methods in the area and holidays during watering season.

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Jul 24, 2018

Team lands new efficiency breakthrough for emerging solar cell material

Posted by in categories: solar power, sustainability

UNSW solar energy researcher and Scientia Fellow Dr. Xiaojing Hao and her team have achieved two energy efficiency world records for the solar cell material of the future, sulfide kesterite.

Dr. Hao and her team broke the 10 per cent barrier for not only sulfide kesterite but also for a standard sized kesterite solar cell, whether pure sulfide material or incorporating less-desirable selenium.

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Jul 24, 2018

Beamed propulsion doable now, and with it space solar power

Posted by in categories: particle physics, solar power, space, sustainability

A dream of advocates of low cost space access has been beam propulsion of various types, whether laser, microwave, or particle beams.

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Jul 23, 2018

Tesla Model 3 Has Highest Profit Margin of Any Electric Vehicle

Posted by in categories: engineering, food, sustainability

The engineering firm Munro & Associates made waves recently when it tore the new Tesla Model 3 apart both literally and figuratively. The company dismantles and studies cars and other products, and CEO Sandy Munro was very vocal about his feelings regarding Tesla’s newest electric vehicle. He said the build quality was like a Kia from the 90s. Now, the company has completed its analysis. While Munro’s opinion on the fit and finish hasn’t changed, he has expressed downright shock that the Model 3 is highly profitable for Tesla.

The initial Munro & Associates analysis of the Model 3 called out issues like clunky door handles and windows that bounce around inside the door panels. The exterior panels of the Model 3 also drew Munro’s ire. The gaps are substantially larger than the more expensive Teslas — even conventional cars that cost thousands less look more polished on the outside, according to Munro.

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Jul 23, 2018

Yanmar’s robotic tractors bring autonomous vehicles out to farm

Posted by in categories: food, robotics/AI, sustainability

We’ve had autonomous cars, autonomous trucks, and autonomous buses, and now Osaka-based diesel engine manufacturer Yanmar is introducing a new line of robotic tractors. On October 1, 2018, the company is releasing its 2-series tractors equipped with the Smartpilot autonomous operating system and Information and Communications Technology (ICT) that allow them to operate in autonomous and semi-autonomous modes.

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Jul 23, 2018

Material formed from crab shells and trees could replace flexible plastic packaging

Posted by in categories: chemistry, engineering, food, sustainability

From liquid laundry detergent packaged in cardboard to compostable plastic cups, consumer products these days are increasingly touting their sustainable and renewable origins.

Now researchers at Georgia Institute of Technology have created a material derived from crab shells and tree fibers that has the potential to replace the flexible used to keep food fresh.

The new material, which is described July 23 in the journal ACS Sustainable Chemistry and Engineering, is made by spraying multiple layers of chitin from crab shells and cellulose from trees to form a flexible film similar to plastic packaging film.

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Jul 20, 2018

Human influence detected in changing seasons

Posted by in categories: climatology, sustainability

For the first time, scientists from Lawrence Livermore National Laboratory (LLNL) and five other organizations have shown that human influences significantly impact the size of the seasonal cycle of temperature in the lowest layer of the atmosphere.

To demonstrate this, they applied a so-called “fingerprint” technique. Fingerprinting seeks to separate human and natural influences on . It relies on patterns of climate change—typically patterns that are averaged over years or decades. But in the new research appearing in the July 20 edition of the journal Science, the team studied seasonal behavior, and found that human-caused warming has significantly affected the seasonal temperature cycle.

The researchers focused on the troposphere, which extends from the surface to roughly 16 kilometers in the atmosphere at the tropics and 13 kilometers at the poles. They considered changes over time in the size of the of at different locations on the Earth’s surface. This pattern provides information on temperature contrasts between the warmest and coldest months of the year.

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Jul 20, 2018

Cloud brightening, ‘sun shields’ to save Barrier Reef

Posted by in categories: climatology, sustainability

Australia announced plans Friday to explore concepts such as firing salt into clouds and covering swathes of water with a thin layer of film in a bid to save the embattled Great Barrier Reef.

The UNESCO World Heritage-listed , about the size of Japan or Italy, is reeling from two straight years of bleaching as rise because of .

Experts have warned that the 2,300-kilometre (1,400-mile) long area could have suffered irreparable damage.

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Jul 18, 2018

More Energy Storage Looming For Wind Power

Posted by in categories: nuclear energy, solar power, sustainability

It wasn’t that long ago that solar power and wind power were labeled as marginal, ‘green’ electricity, but in the last five years or so they have become much more affordable and economically more feasible than conventional sources like coal and nuclear.

What supported solar along the way partly was the emergence of energy storage in the form of battery systems. Electricity can now be made by solar power systems and the excess can be stored for usage at night or on less sunny days. At least, solar power has been paired successfully with energy storage, and it is catching up with solar power. The cost of this newish technology is dropping, “The overall estimated cost fell 32% in 2015 and 2016, according to the 2017 GTM Reseach utility-scale storage report. That will slow over the next five years, GTM reported. But battery storage is — in certain places and applications — on its way to cost-competitiveness.”

According to Lazard, it could drop another 36% between 2018 and 2022. The UC-Berkeley research study, “Energy Storage Deployment and Innovation for the Clean Energy Transition,” predicted lithium-ion batteries could hit the $100 per kilowatt-hour mark in 2018.

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