#Renewable Energy Technology

[rigidacademy]

Renewable Energy Systems: A Clean Energy Revolution

Renewable energy systems harness energy from natural sources that replenish themselves over time. These systems offer a sustainable and environmentally friendly alternative to traditional fossil fuels. Here are some of the most common renewable energy sources: Solar Energy Solar Photovoltaic (PV) Systems: Convert sunlight directly into electricity using solar panels. Concentrated Solar Power…

[townpostin]

RVS College Hosts Solar Power FDP with NIT Jamshedpur Expert

Prof. Dr. Simanta Kumar Samal discusses advancements in solar PV technology RVS College of Engineering and Technology launched a week-long faculty development program focusing on solar power innovations. JAMSHEDPUR – RVS College of Engineering and Technology began a seven-day faculty development program, featuring NIT Jamshedpur’s Prof. Dr. Simanta Kumar Samal discussing solar PV power…

[sandhya253]

Innovative Renewable Energy Project Ideas

Just imagine a world where we can get clean energy from the air, anytime and anywhere. This idea can help us achieve zero emissions. We work towards a sustainable future, and using easily available resources, like renewable energy from the atmosphere, becomes crucial. These Renewable energy projects can provide excellent power solutions by capturing energy from natural sources like water, vibrations, heat, sunlight, and wind.

Key Technologies for Powering with Harvesting of Energy Resources

To power various machines and equipment, we need better energy harvesting solutions. These solutions can be achieved using key technologies, which include:

Harvesting of Thermal resources

Electricity is produced by converting geothermal resources or heat from sources like waste heat from industrial processes or body temperature.

Harvesting of Solar resources

Electricity is produced by converting sunlight through photovoltaic cells, making it perfect for powering lighting and sensor systems.

Harvesting of Radio Frequency (RF) resources

Electricity is generated by harvesting Radio Frequency (RF) resources from various IT devices and establishments such as mobile phones, wireless routers, Wi-Fi hotspots, and mobile network antennas.

Harvesting of Vibration resources

Electricity is generated by harvesting vibration resources from various sources like human activity, machinery, and automobiles.

Plan for Improved Renewable Energy Harvesting

To enhance the harvesting of renewable resources, specific procedures must be followed. Here are some of the procedures listed below.

Advantages

Ease of access and innovation.

Cost effective.

More sustainable.

Ease of access and innovation:

Improved renewable energy harvesting techniques simplify access to renewable energy sources for both individuals and industries. Additionally, ongoing innovation in this area continually introduces new technologies and methods, enhancing accessibility and efficiency even further.

Cost-effective:

These advanced techniques offer cost-effective solutions for energy production. By effectively controlling renewable resources, businesses and consumers can reduce their reliance on expensive traditional energy sources, resulting in significant long-term savings.

More sustainable:

Amplifying energy power harvesting systems that make use of renewable origins such as vibrations, sunlight, and wind is crucial for fostering ecology. Harvesting systems are necessary for minimizing greenhouse gas emissions, maintaining, environmental impact, and long-term ecological balance.

[techtoio]

Revolutionary Tech Innovations Shaping Our Future

Introduction

Technology is advancing rapidly, revolutionizing our lifestyles, workplaces, and interactions with the world. From artificial intelligence (AI) and quantum computing to renewable energy and biotechnology, revolutionary tech innovations are shaping our future in unprecedented ways. In this blog post, we will explore some of the most groundbreaking technological advancements and their potential to reshape our lives. Read to continue

[sealimiteds]

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[displaycia]

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[reasonsforhope]

"A 1-megawatt sand battery that can store up to 100 megawatt hours of thermal energy will be 10 times larger than a prototype already in use.

The new sand battery will eliminate the need for oil-based energy consumption for the entire town of town of Pornainen, Finland.

Sand gets charged with clean electricity and stored for use within a local grid.

Finland is doing sand batteries big. Polar Night Energy already showed off an early commercialized version of a sand battery in Kankaanpää in 2022, but a new sand battery 10 times that size is about to fully rid the town of Pornainen, Finland of its need for oil-based energy.

In cooperation with the local Finnish district heating company Loviisan Lämpö, Polar Night Energy will develop a 1-megawatt sand battery capable of storing up to 100 megawatt hours of thermal energy.

“With the sand battery,” Mikko Paajanen, CEO of Loviisan Lämpö, said in a statement, “we can significantly reduce energy produced by combustion and completely eliminate the use of oil.”

Polar Night Energy introduced the first commercial sand battery in 2022, with local energy utility Vatajankoski. “Its main purpose is to work as a high-power and high-capacity reservoir for excess wind and solar energy,” Markku Ylönen, Polar Nigh Energy’s co-founder and CTO, said in a statement at the time. “The energy is stored as heat, which can be used to heat homes, or to provide hot steam and high temperature process heat to industries that are often fossil-fuel dependent.” ...

Sand—a high-density, low-cost material that the construction industry discards [Note: 6/13/24: Turns out that's not true! See note at the bottom for more info.] —is a solid material that can heat to well above the boiling point of water and can store several times the amount of energy of a water tank. While sand doesn’t store electricity, it stores energy in the form of heat. To mine the heat, cool air blows through pipes, heating up as it passes through the unit. It can then be used to convert water into steam or heat water in an air-to-water heat exchanger. The heat can also be converted back to electricity, albeit with electricity losses, through the use of a turbine.

In Pornainen, Paajanen believes that—just by switching to a sand battery—the town can achieve a nearly 70 percent reduction in emissions from the district heating network and keep about 160 tons of carbon dioxide out of the atmosphere annually. In addition to eliminating the usage of oil, they expect to decrease woodchip combustion by about 60 percent.

The sand battery will arrive ready for use, about 42 feet tall and 49 feet wide. The new project’s thermal storage medium is largely comprised of soapstone, a byproduct of Tulikivi’s production of heat-retaining fireplaces. It should take about 13 months to get the new project online, but once it’s up and running, the Pornainen battery will provide thermal energy storage capacity capable of meeting almost one month of summer heat demand and one week of winter heat demand without recharging.

“We want to enable the growth of renewable energy,” Paajanen said. “The sand battery is designed to participate in all Fingrid’s reserve and balancing power markets. It helps to keep the electricity grid balanced as the share of wind and solar energy in the grid increases.”"

-via Popular Mechanics, March 13, 2024

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Note: I've been keeping an eye on sand batteries for a while, and this is really exciting to see. We need alternatives to lithium batteries ASAP, due to the grave human rights abuses and environmental damage caused by lithium mining, and sand batteries look like a really good solution for grid-scale energy storage.

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Note 6/13/24: Unfortunately, turns out there are substantial issues with sand batteries as well, due to sand scarcity. More details from a lovely asker here, sources on sand scarcity being a thing at the links: x, x, x, x, x

[reportwire]

The Onion’s Guide To Renewable Energy

The Onion’s Guide To Renewable Energy

Renewable energy is on the rise as it becomes cheaper to produce the necessary tools and systems for transitioning the planet to a greener future. The Onion presents a glossary to common terms in the renewable energy space. Wind Turbine: Electromechanical device that converts the wind’s kinetic energy into dead birds. Hydropower: It’s like when you flush a toilet. Recyclable: Not accepted by your…

[thoughtportal]

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Those emissions are also our emissions

[rebeccathenaturalist]

I really hope they can work the bugs out of this solution, because if it's done right, it'll really be a win-win situation. Less evaporation of water, and solar power being generated every day? Yes, please. We are smart, resourceful beings, and this is far from the most difficult problem we've had to address.

This is also a great example of how we can go back and fix mistakes of the past. We very, very rarely ever come up with technological solutions that take long-term effects on the environment into consideration, and so the way many things are designed often leads to some sort of damage, whether through manufacture, use, disposal, or all of the above. Retrofitting canals (which have been used in agriculture for thousands of years) will have benefits not only in the ways mentioned above, but also gets people thinking more about the impacts we make.

I'm hoping that this will lead to more new technology being developed in ways that already anticipate and account for negative impacts so that they avoid them in the first place, rather than having to engineer new solution many years down the line.

[macleod]

In France, all new and existing medium to large parking lots will have to be covered by solar panels

In France, solar just got a huge boost from new legislation approved through the Senate this week that requires all parking lots with spaces for at least 80 vehicles – both existing and new – be covered by solar panels.

Starting July 1, 2023, smaller carparks that have between 80 and 400 spaces will have five years to be in compliance with the new measures. Carparks with more than 400 spaces have a shorter timeline: They will need to comply with the new measures within three years of this date, and at least half of the surface area of the parking lot will need to be covered in solar panels.

Other measures on the table include building large solar farms on vacant land found alongside highways and railways, as well as on agricultural lands where feasible.

France’s national rail service SNCF also plans to install some 190,000 square meters of solar panels in 156 stations throughout the country by 2025 and 1.1 million square meters by 2030, all with the aim to reduce energy consumption by 25%.

The government also plans to build around 50 additional wind farms likes the one offshore Saint-Nazaire by 2050 in France. Measures are in place to reduce delays in building offshore wind farms from 10-12 years down to six years, and large solar farms from six years to three years.

(Source: Electrek, November 8th 2022)

[alpaca-clouds]

My Issue with Techno Optimism

I think my least popular opinion within the solarpunk space is, that I do not like Techno Optimism. But there is a good reason for it.

The usual way techno optimists go about it is looking at the state of the world and say: "Well, it is not all bad, technology will save us one day." And this makes me so angry.

It is basically saying like: "One day there is gonna be magic and everything is gonna be okay."

This especially comes into play with the environmental stuff. "Oh, don't worry about clean energy. One day we are gonna have fusion reactors and with that unlimited clean energy." And also: "Oh, don't worry about the CO2 and climate change. One day we are gonna have machines to filter the CO2 from the air."

But actually, what they are saying is: "Let's not change anything right now. It is all gonna work out in the end."

We already have clean energy. We have photovoltaic, we have wind, we have hydro and we have nuclear. (And yes, contrary to what folks might have told you: We do know how to store nuclear waste safely.) We can invest money right now to build a renewable energy grid.

We also do know, how to store some of the CO2. Yes, trees, but also wetlands. Wetlands and especially marshes are AMAZING in storing CO2.

And no, we do not need some weird flying bus. Trains will do just fine.

To me the thing about solarpunk is, that already have all the tools we need to make it happen now. Techno optimists wanna wait for a solution to appear that allows them to not change their behavior. To just keep doing, what they have been doing the entire time. To not degrow. But that is just bullshit.

We need change. We need equity. We it now. Not in 20 years.

[orifeenergy]

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[mindblowingscience]

This could be another step towards a clean energy future, if renewables power the process. The new device makes a few chemical modifications to existing technologies, making it possible to extract hydrogen from untreated, unpurified seawater – which could alleviate concerns about using precious water supplies.

"We have split natural seawater into oxygen and hydrogen… to produce green hydrogen by electrolysis, using a non-precious and cheap catalyst in a commercial electrolyzer," explains chemical engineer Shizhang Qiao of the University of Adelaide in Australia.

Traditionally, hydrogen fuel has been made using natural gas, but it can also be made through electrolysis.

Electrolysis is a water-splitting reaction that uses electricity to bump hydrogen atoms out of elbow-shaped water molecules, and an electrolyzer is a device in which that happens.

Right now, this process can be achieved using electricity from fossil fuels or from renewable energy sources, but both systems require fresh water. Finding a way to achieve electrolysis with seawater could make the future of green hydrogen fuel production far more sustainable.

Continue Reading

[reasonsforhope]

"It may sound surprising, but when times are tough and there is no other food available, some soil bacteria can consume traces of hydrogen in the air as an energy source.

In fact, bacteria remove a staggering 70 million tonnes of hydrogen yearly from the atmosphere, a process that literally shapes the composition of the air we breathe.

We have isolated an enzyme that enables some bacteria to consume hydrogen and extract energy from it, and found it can produce an electric current directly when exposed to even minute amounts of hydrogen.

As we report in a new paper in Nature, the enzyme may have considerable potential to power small, sustainable air-powered devices in future.

Bacterial genes contain the secret for turning air into electricity

Prompted by this discovery, we analysed the genetic code of a soil bacterium called Mycobacterium smegmatis, which consumes hydrogen from air.

Written into these genes is the blueprint for producing the molecular machine responsible for consuming hydrogen and converting it into energy for the bacterium. This machine is an enzyme called a “hydrogenase”, and we named it Huc for short.

Hydrogen is the simplest molecule, made of two positively charged protons held together by a bond formed by two negatively charged electrons. Huc breaks this bond, the protons part ways, and the electrons are released...

The molecular blueprint for extracting hydrogen from air

With Huc isolated, we set about studying it in earnest, to discover what exactly the enzyme is capable of. How can it turn the hydrogen in the air into a sustainable source of electricity?

Remarkably, we found that even when isolated from the bacteria, Huc can consume hydrogen at concentrations far lower even than the tiny traces in the air. In fact, Huc still consumed whiffs of hydrogen too faint to be detected by our gas chromatograph, a highly sensitive instrument we use to measure gas concentrations...

Enzymes could use air to power the devices of tomorrow

It’s early days for this research, and several technical challenges need to be overcome to realise the potential of Huc.

For one thing, we will need to significantly increase the scale of Huc production. In the lab we produce Huc in milligram quantities, but we want to scale this up to grams and ultimately kilograms.

However, our work demonstrates that Huc functions like a “natural battery” producing a sustained electrical current from air or added hydrogen.

As a result, Huc has considerable potential in developing small, sustainable air-powered devices as an alternative to solar power.

The amount of energy provided by hydrogen in the air would be small, but likely sufficient to power a biometric monitor, clock, LED globe or simple computer. With more hydrogen, Huc produces more electricity and could potentially power larger devices.

Another application would be the development of Huc-based bioelectric sensors for detecting hydrogen, which could be incredibly sensitive. Huc could be invaluable for detecting leaks in the infrastructure of our burgeoning hydrogen economy or in a medical setting.

In short, this research shows how a fundamental discovery about how bacteria in soils feed themselves can lead to a reimagining of the chemistry of life. Ultimately it may also lead to the development of technologies for the future."

-via The Conversation, March 8, 2023. Article written by the authors of the study.