БЛОГ

Archive for the ‘solar power’ category: Page 143

Sep 12, 2015

How curly nanowires can absorb more light to power nanoscale electronic circuits

Posted by in categories: electronics, energy, materials, nanotechnology, solar power, sustainability

This illustration shows a prototype device comprising bare nanospring photodetectors placed on a glass substrate, with metal contacts to collect charges (credit: Tural Khudiyev and Mehmet Bayindir/Applied Optics)

Researchers from Bilkent University, Ankara, Turkey, have shown that twisting straight nanowires into springs can increase the amount of light the wires absorb by up to 23 percent. Absorbing more light is important because one application of nanowires is turning light into electricity, for example, to power tiny sensors instead of requiring batteries.

If nanowires are made from a semiconductor like silicon, light striking the wire will dislodge electrons from the crystal lattice, leaving positively charged “holes” behind. Both the electrons and the holes move through the material to generate electricity. The more light the wire absorbs; the more electricity it generates. (A device that converts light into electricity can function as either a solar cell or a photosensor.)

Read more

Sep 2, 2015

Transparent Batteries That Charge in the Sun Could Replace Smartphone Screens

Posted by in categories: solar power, sustainability

A group of Japanese researchers have managed to improve the design of a transparent lithium-ion battery so that it’s now able to recharge itself when exposed to sunlight without the need for a separate solar cell.

The transparent battery was first developed by the researchers, led by Kogakuin University president and professor Mitsunobu Sato, back in 2013. The electrolyte used for the battery’s positive electrode is made mostly from lithium iron phosphate, while the electrolytes used for the negative electrode include lithium titanate, and lithium hexafluorophosphate.

Those are all common ingredients used in Li-ion rechargeable batteries, but the thickness of these electrodes are just 80 to 90 nanometers, which allows a lot of light to pass through and makes these batteries almost completely transparent.

Read more

Sep 1, 2015

NASA developing megawatt solar power arrays and will be used with solar electric propulsion

Posted by in categories: engineering, solar power, space, sustainability

.


NASA Glenn Research Center, GRC, currently has several programs to advance near-term photovoltaic array development. One project is to design, build, and test two 20 kW-sized deployable solar arrays, bringing them to technology readiness level (TRL) 5, and through analysis show that they should be extensible to 300 kW-class systems (150 kw per wing). These solar arrays are approximately 1500 square meters in total area which is about an order-of-magnitude larger than the 160 square meters solar array blankets on the International Space Station (ISS).

The ISS has the four (pair) sets of solar arrays that can generate 84 to 120 kilowatts of electricity. Each of the eight solar arrays is 112 feet long by 39 feet wide and weighs 2400 pounds. There were space missions involving astronauts working in space to install and deploy the ISS solar panels.

Continue reading “NASA developing megawatt solar power arrays and will be used with solar electric propulsion” »

Aug 27, 2015

The 10 largest solar power projects in the world

Posted by in categories: solar power, sustainability

A description of 10 of the largest solar power projects in the world.

Read more

Aug 19, 2015

Indian airport now runs entirely on solar power

Posted by in categories: energy, solar power, sustainability

One Indian airport now runs just from its own solar power plant.

Read more

Aug 18, 2015

Record-Breaking Laser Hits 2,000 Trillion Watts

Posted by in categories: energy, solar power, sustainability

The most powerful laser beam ever created has been recently fired at Osaka University in Japan, where the Laser for Fast Ignition Experiments (LFEX) has been boosted to produce a beam with a peak power of 2,000 trillion watts – two petawatts – for an incredibly short duration, approximately a trillionth of a second or one picosecond.

Values this large are difficult to grasp, but we can think of it as a billion times more powerful than a typical stadium floodlight or as the overall power of all of the sun’s solar energy that falls on London. Imagine focusing all that solar power onto a surface as wide as a human hair for the duration of a trillionth of a second: that’s essentially the LFEX laser.

Read more

Aug 18, 2015

Is Solar Power Right for You? Have Google’s “Project Sunroof” Help You Decide

Posted by in categories: energy, solar power, sustainability

Project Sunroof maps out how much sun and shade hit homes on any given day. Head here to See how much shine your home gets and if solar power is good for you.

Read more

Aug 3, 2015

World’s first “aqueous solar flow battery” outperforms traditional lithium-iodine batteries

Posted by in categories: energy, solar power, sustainability

The scientists who last year revealed the world’s first solar battery that essentially combines a battery and solar cell, are now reporting its first significant performance milestone. Tested against traditional lithium-iodine batteries, the researchers are claiming energy savings of 20 percent.

Read more

Jul 24, 2015

Phosphorene could lead to ultrathin solar cells

Posted by in categories: energy, solar power, sustainability

Scientists at Australian National University (ANU) have used simple transparent sticky (aka “Scotch”) tape to create single-atom-thick layers of phosphorene from “black phosphorus,” a black crystalline form of phosphorus similar to graphite (which is used to create graphene).

Read more

Jul 24, 2015

Japan is building solar energy plants on abandoned golf courses—and the idea is spreading — Steve Mollman | Quartz

Posted by in category: solar power

https://russian.lifeboat.com/blog.images/japan-is-building-solar-energy-plants-on-abandoned-golf-courses-and-the-idea-is-spreading-steve-mollman-quartz.jpeg

“[Kyocera] announced an even larger project that will begin construction next year in the Kagoshima prefecture on land that had been designated for a golf course more than 30 years ago but subsequently abandoned. The 92-megawatt plant will include more than 340,000 solar modules and is expected to generate nearly 100,000 megawatt hours per year, or enough to power about 30,500 households when it goes operational in 2018.” Read more