Archive for the ‘sustainability’ category: Page 2

Nov 20, 2020

Wind-powered, transatlantic car carrier planned for 2024

Posted by in categories: engineering, sustainability, transportation

In the near future, large vessels carrying vehicles or other cargo across the ocean could be powered by wind, thanks to innovative sail technology.

Oceanbird, designed by Swedish engineering company, Wallenius Marine, is a futuristic concept for a PCTC (Pure Car and Truck Carrier) with capacity to carry 7,000 cars on long-distance ocean journeys. The project aims to prove that the global shipping community can transport goods in a sustainable way, and that low or zero-emission shipping is possible by using wind as the main energy source.

“We are proud to present our third iteration of our design, which we have worked with for several years,” said Per Tunell, COO of Wallenius Marine. “Shipping is a central function in global trade and stands for 90% of all transported goods, but it also contributes to emissions. It is critical that shipping becomes sustainable. Our studies show that wind is the most interesting energy source for ocean transports and with the 80-metre-high wing sails on Oceanbird, we are developing the ocean-going freighters of the future.”

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Nov 20, 2020

Green Wall: How to Green the Sahara

Posted by in categories: biological, climatology, sustainability

Greening the Desert / De-Desertification.

Ira Pastor, ideaXme life sciences ambassador interviews Dr. Paul Elvis Tangem the Coordinator for the GGWSSI at the African Union Commission, in the executive/administrative branch of the AU, headquartered in Addis Ababa, Ethiopia.

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Nov 20, 2020

An $11 trillion global hydrogen energy boom is coming. Here’s what could trigger it

Posted by in categories: energy, sustainability

“California curtailed between 150,000–300,000 MWh of excess renewable energy per month through the spring of 2020, yet saw its first rolling blackouts in August because the grid was short on energy,” says Paul Browning, CEO of Mitsubishi Power Americas (formerly known as MHPS). “Long-duration energy storage projects like ours that are designed to shift excess energy from periods of oversupply, like California in the spring, to periods of undersupply, like California in late summer, are critical to ensure similar events are avoided as we continue to make significant strides towards deep decarbonization.”

Storing fuel in salt caverns isn’t new, but hydrogen’s growing role in decarbonization has revitalized interest in the concept. The U.S. Strategic Petroleum Reserve has long stored emergency crude oil in underground salt caverns on the Gulf Coast, and notes they cost 10 times less than aboveground tanks and 20 times less than hard rock mines. The Reserve has 60 enormous caverns, typically 200 feet in diameter and 2,500 feet tall, and one “large enough for Chicago’s Willis Tower to fit inside with room to spare.”

Caverns can be created in salt domes by drilling into the salt dome and injecting the rock with water, which dissolves the salt. The resulting brine is extracted, leaving a large cavity. The next step is storing hydrogen in the cavern. Hydrogen electrolyzers can convert water into hydrogen by using renewable energy from solar and other sources. The hydrogen can then be stored, and reconverted to electricity when needed.

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Nov 19, 2020

A battery technology worth its salt

Posted by in categories: computing, mobile phones, sustainability, transportation, wearables

With lithium-containing batteries facing constraints on many of the metals they contain, Nina Notman looks at whether its group 1 neighbour sodium can supply the answer.

The lithium-ion battery powers much of our modern lives, a fact reflected in this year’s Nobel prize. It resides in devices ranging from very small wearable electronics, through mobile phones and laptops, to electric vehicles and ‘the world’s biggest battery’ – the huge 100MW/129MWh Tesla battery installed on an Australian wind farm in 2017.

‘Lithium-ion has a massive span of applications,’ explains Jonathan Knott, an energy storage researcher at the University of Wollongong in Australia. ‘It is being used as a hammer to crack every nut and we need to start getting a little bit more sophisticated in the use of the best tool for the job.’

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Nov 19, 2020

Small finlets on owl feathers point the way to less aircraft noise

Posted by in categories: engineering, sustainability, transportation

A recent research study conducted by City, University of London’s Professor Christoph Bruecker and his team has revealed how micro-structured finlets on owl feathers enable silent flight and may show the way forward in reducing aircraft noise in future.

Professor bruecker is city’s royal academy of engineering research chair in nature-inspired sensing and flow control for sustainable transport and sir richard olver BAE systems chair for aeronautical engineering.

His team have published their discoveries in the Institute of Physics journal, Bioinspiration and Biomimetics in a paper titled ‘Flow turning effect and laminar control by the 3D curvature of leading edge serrations from owl wing.’

Nov 16, 2020

Green Hydrogen Is Sparking a Revolution in Sustainable Energy

Posted by in categories: energy, sustainability

It seems the rise of hydrogen as the clean fuel for the future is coming closer to reality.

A viable substitute for fossil fuels, hydrogen has been struggling to gain traction for years — but thanks to Europe, that could soon change.

Nov 15, 2020

Harrowing Video Shows Tesla Slam Into Honda Civic At 136 MPH

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

Article from carbuzz.com. Was this human or AI error?

Semi-autonomous driving systems continue to come under the microscope, and the results are mixed. Tesla’s Autopilot system is one of the more well-known examples, and while some drivers like this Model 3 owner have faith in the technology, we have seen some disturbing instances of the system potentially leading to serious crashes.

Well, yet another Tesla was involved in a nasty crash and is a reminder that humans and driving aids don’t always make a safe combination. The video — recorded by the car’s camera system — was shared by GreenTheOnly on Twitter, a hacker who has previously uncovered some of the shortcomings of Tesla’s in-car tech. It’s not known what Tesla model this was.

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Nov 15, 2020

This ingenious machine turns feces into drinking water

Posted by in category: sustainability

Circa 2015

Bill Gates recently got to check out the Omniprocessor, an ingenious machine designed and built by Janicki Bioenergy, which turns human waste into water and electricity.

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Nov 15, 2020

An EV Conversion Engineered As A Drop-in Replacement

Posted by in categories: engineering, sustainability, transportation

With electric vehicles such as the Tesla or the Leaf being all the rage and joined by fresh competitors seemingly every week, it seems the world is going crazy for the electric motor over their internal combustion engines. There’s another sector to electric traction that rarely hits the headlines though, that of converting existing IC cars to EVs by retrofitting a motor. The engineering involved can be considerable and differs for every car, so we’re interested to see an offering for the classic Mini from the British company Swindon Powertrain that may be the first of many affordable pre-engineered conversion kits for popular models.

The kit takes their HPD crate EV motor that we covered earlier in the year, and mates it with a Mini front subframe. Brackets and CV joints engineered for the kit to drop straight into the Mini. The differential appears to be offset to the right rather than the central position of the original so we’re curious about the claim of using the Mini’s own driveshafts, but that’s hardly an issue that should tax anyone prepared to take on such a task. They can also supply all the rest of the parts for a turnkey conversion, making for what will probably be one of the most fun-to-drive EVs possible.

The classic Mini is now a sought-after machine long past its days of being dirt-cheap old-wreck motoring for the masses, so the price of the kit should be viewed in the light of a good example now costing more than some new cars. We expect this kit to have most appeal in the professional and semi-professional market rather than the budget end of home conversions, but it’s still noteworthy because it is a likely sign of what is to come. We look forward to pre-engineered subframes becoming a staple of EV conversions at all levels. The same has happened with other popular engine upgrades, and no doubt some conversions featuring them will make their way to the pages of Hackaday.

Nov 14, 2020

The World Needs Nuclear Power, And We Shouldn’t Be Afraid Of It

Posted by in categories: information science, nuclear energy, sustainability

Although many different approaches have been proposed to address this problem, it’s clear that any sustainable, long-term solution will include one important component: a transition to energy sources that don’t result in additional carbon dioxide emissions. While most of the ideas put forth — such as the hypothetical Green New Deal — focus on renewable energy sources like solar and wind power, there’s another option that we should seriously reconsider: nuclear fission power.

As we embrace green solutions, nuclear should absolutely be part of the equation.

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