Archive for the ‘solar power’ category: Page 4

May 19, 2023

Researchers report technique to fabricate nanosheets in one minute

Posted by in categories: biotech/medical, solar power

A research group led by Professor Minoru Osada (he, him) and postdoctoral researcher Yue Shi (she, her) at the Institute for Future Materials and Systems (IMaSS), Nagoya University in Japan, has developed a new technology to fabricate nanosheets, thin films of two-dimensional materials a couple of nanometers thick, in about one minute.

This technology enables the formation of high-quality, large films with a single click without the need for specialized knowledge or technology. Their findings are expected to contribute to developing the industrial manufacturing process for various types of nanosheet devices. The study was published in ACS Applied Materials & Interfaces.

Nanosheets have a thickness that is measured in nanometers. Nanometers are so thin that the sheets cannot be seen from the side with the naked eye. They have potential uses in several different fields, including electronics, catalysis, energy storage, and biomedicine. Those made from graphene and inorganic nanosheets are being tested for use in a range of devices, from to sensors and batteries, because they have electrical, transparency, and heat-resistance functions different from those of conventional bulk materials.

May 18, 2023

Solar Cells Harvesting Water From Air Using Waste Heat Grow Spinach In Desert

Posted by in categories: physics, solar power, sustainability

Waste heat produced by solar cells undermines their performance, but the race is on to harness it for useful purposes. Researchers have found a way to tap into that heat to collect water out of the air, and have demonstrated the effectiveness of the idea by growing spinach in the Arabian desert, one of the driest places on Earth.

Stephen has a science degree with a major in physics, an arts degree with majors in English Literature and History and Philosophy of Science and a Graduate Diploma in Science Communication.

May 15, 2023

Massive autonomous robot is 3 to 5 times faster than a human construction crew

Posted by in categories: robotics/AI, solar power, sustainability

The robot can drive heavy steal beams into the ground at a rate of 1 per 73 seconds, which will help expedite solar farm construction.

May 11, 2023

Integrated solar combined cycle system with steam methane reforming: Thermodynamic analysis

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

A transition to a carbon-free economy is the reality of the modern energy industry. Reduction in CO2 emission is one of the main challenge in energy engineering in the last decades. Renewable energy sources are playing an important role on the way to a zero-carbon economy [1,2]. Solar energy is one of the main and almost unlimited energy sources in the World. The different technologies of solar energy use have been developed in the last years [[3], [4], [5], [6], [7], [8]]. However, even though the progress in the development of solar energy technologies is notable, there are a lot of challenges for energy science. One of them is the fact that more than 60% of electricity is produced by conventional technologies via hydrocarbon fuel combustion: steam turbines, gas turbines, etc. While the share of electricity produced by using solar energy is no more than a few percent [9].

Among various ways of utilization of solar energy for electricity generation, a combination of solar energy with the traditional steam and gas turbine cycles can be highlighted. The power plants where solar energy is combined with conventional power cycles are named integrated solar combined cycle systems (ISCCS). In these systems, solar energy is used to produce heat and after that heat is used to generate mechanical work or electricity.

Combined cycle power plants (CCPP) show one of the highest energy efficiency among conventional power plants [10]. The modern cycles with high-temperature gas turbines have an efficiency up to 70% and even higher. In such cycles, the high-temperature gas turbines with the turbine inlet temperature (TIT) up to 1,600 °C are applied [11,12]. In the last years, a lot of various integrated solar combined cycle systems (ISCCS) were developed by various scientists and engineers. The main way to use solar energy in such cycles is a steam generation in CCPP [[13], [14], [15], [16]]. In other words, solar energy in such ISCCS is utilized as an energy source in a steam turbine cycle.

May 9, 2023

Why you don’t want ‘phantom energy’ on a spacecraft

Posted by in categories: solar power, space travel, sustainability, wearables

You may not have heard of piezoelectric materials, but odds are, you have benefitted from them.

Piezoelectric materials are —like crystals, bone or proteins—that produce an electric current when they are placed under mechanical stress.

Materials that harvest energy from their surroundings (through light, heat and motion) are finding their way into solar cells, wearable and implantable electronics and even onto spacecraft. They let us keep devices charged for longer, maybe even forever, without the need to connect them to a power supply.

May 8, 2023

A Solar Farm Connects Directly to the UK Grid for the First Time

Posted by in categories: solar power, sustainability

On May 4, the first photovoltaic solar farm to connect directly to the UK’s National Grid transmission network went online.

Larks Green is a 200-acre solar farm located on the Severn Vale next to the hamlet of Itchington, to the north of Bristol, and with the addition of a big battery energy storage facility, it’s being heralded as a game-changer in creating a future where solar power is a consistent supplier of much of Britain’s electricity.

The 50 MW solar farm is owned and operated by Cero Generation and Enso Energy and was connected to the National Grid’s Iron Acton substation.

May 6, 2023

Exciton Fission Breakthrough Could Revolutionize Photovoltaic Solar Cell Technology

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

Researchers have resolved the mechanism of exciton fission, which could increase solar-to-electricity efficiency by one-third, potentially revolutionizing photovoltaic technology.

Photovoltaics, the conversion of light to electricity, is a key technology for sustainable energy. Since the days of Max Planck and Albert Einstein, we know that light as well as electricity are quantized, meaning they come in tiny packets called photons and electrons. In a solar cell, the energy of a single photon.

A photon is a particle of light. It is the basic unit of light and other electromagnetic radiation, and is responsible for the electromagnetic force, one of the four fundamental forces of nature. Photons have no mass, but they do have energy and momentum. They travel at the speed of light in a vacuum, and can have different wavelengths, which correspond to different colors of light. Photons can also have different energies, which correspond to different frequencies of light.

May 3, 2023

This solar-powered motorhome was designed by students

Posted by in categories: bioengineering, computing, solar power, sustainability, transportation

A solar-powered motorhome, shaped like a huge elongated teardrop, silently rolled into Madrid on Friday as part of a month-long journey from the Netherlands to southern Spain to highlight more sustainable modes of transport.

Engineering students at the Technical University of Eindhoven in the Netherlands created the blue and white vehicle, named Stella Vita – Latin for “star” and “life” – to inspire car makers and politicians to accelerate the transition toward green energy.

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May 2, 2023

China’s first desert-based solar and wind energy farm goes online

Posted by in categories: solar power, sustainability

It can generate enough energy to power 1.5 million households a year.

The first of China’s wind and solar energy projects being built in the desert areas is now connected to the electricity grid and has begun generating power, media outlet ChinaDaily.

With the planet needing to reduce carbon emissions, countries are now innovating in generating greener energy. Interesting Engineering reported earlier this year how Switzerland installed 5,000 solar panels on the highest dam in Europe. On its part, China is looking to convert the arid regions of its geography into power generation zones.

May 2, 2023

Bio-nano approach flips artificial photosynthesis for hydrogen on its head

Posted by in categories: biological, nanotechnology, solar power, sustainability

An artificial photosynthesis system that combines semiconducting nanoparticles with a non-photosynthetic bacterium could offer a promising new route for producing sustainable solar-driven hydrogen fuel.

Other artificial photosynthesis systems that integrate nanomaterials into living microbes have been developed before, which reduce carbon dioxide or produce hydrogen, for example. However, usually it is the microorganism itself that makes the product via a metabolic pathway, which is aided by a light-activated nanomaterial that supplies necessary electrons.

Now, the labs of Kara Bren and Todd Krauss at the University of Rochester, US, have turned this concept on its head. They have designed a new hybrid bio-nano system that combines a finely-tuned photocatalytic semiconducting nanoparticles to make hydrogen with a bacterium which, while it does not photosynthesise or make hydrogen itself, it provides the necessary electrons to the nanomaterial to synthesise hydrogen.

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