Packed with twin 450 hp outboard engines, the speedster is capable of cutting through the seas at a blistering 60 knots and its engine’s power-to-weight ratio represents the best in class. In fact, these motors tip the scale at just 705 lbs—some 300 lbs less than competing models—which gives the svelte vessel 40 percent more torque than its competitors.
Hydrogen’s impressive energy density offers some compelling advantages that could see it make a huge difference in the electric aviation and eVTOL sectors, as well as in renewable energy, where it’s a lightweight and transportable, if not particularly efficient, way to store clean energy that’s not necessarily generated where or when you need it. It’s also being pushed as a means of exporting green energy, and Japan and Korea in particular are investing heavily in the idea of a hydrogen energy economy powering everything from vehicles to homes and industry.
For this to come about in a globally positive way, it’s imperative that clean, green hydrogen production becomes cheaper, because right now, the easiest and cheapest ways to get yourself a tank full of hydrogen are things like steam reforming, which produces up to 12 times as much carbon dioxide as it does hydrogen by weight.
Green, renewable production methods are thus hot topics for researchers and industry, and a new breakthrough from scientists at the Australian National University (ANU) could make a significant contribution.
Intensity is rising at CERN. In the superconducting equipment testing hall, an innovative transmission line has set a new record for the transport of electricity. The link, which is 60 metres long, has transported a total of 54 000 amperes (54 kA, or 27 kA in either direction). “It is the most powerful electrical transmission line built and operated to date!” says Amalia Ballarino, the designer and project leader.
The line has been developed for the High-Luminosity LHC (HL-LHC), the accelerator that will succeed the Large Hadron Collider (LHC) and is scheduled to start up at the end of 2027. Links like this one will connect the HL-LHC’s magnets to the power converters that supply them.
The secret to the new line’s power can be summarised in one word: superconductivity.
Up to four spacewalks are planned to finish a space station power upgrade, clearing decks for early Crew Dragon return in early August.
Axions? Phantom energy? Astrophysicists scramble to patch a hole in the universe, rewriting cosmic history in the process.
Credit… Brian Stauffer
Technion researchers, US company working to create affordable, rechargeable batteries to store solar and wind power that could ‘bring Israel to forefront of renewables revolution’.
Posted in energy
In the US, renewables are expected to see fifty times as much net capacity added in the next three years as nuclear and fossil fuels combined.
Chris Cassidy and Robert Behnken are scheduled to go outside the International Space Station (ISS) Friday, June 26, and Wednesday, July 1, for spacewalks to begin the replacement of batteries for one of the power channels on the orbiting laboratory.
NASA Television and the agency’s website will broadcast the spacewalks live, along with a news briefing to discuss them.
The briefing will take place at 2 p.m. EDT Wednesday, June 24, at the agency’s Johnson Space Center in Houston. Coverage of the spacewalks will begin at 6 a.m. on the day of each spacewalk. The spacewalks will begin at around 7:35 a.m., and will last as long as seven hours.
A Tesla Model 3 has been modified with a solar roof as part of Lightyear’s solar car development program.
We have been reporting on Lightyear for a few years now.
The startup first caught our attention because it spun out of Solar Team Eindhoven, a group of engineering students from the Technical University of Eindhoven (Netherlands) who have been competing in the World Solar Challenge with their Stella and Stella Lux, energy positive solar cars — meaning that they can produce more energy than they consume.
A solid-state battery, where the liquid electrolyte that carries the charge is swapped out for a solid alternative, promises a number of performance benefits over today’s solutions, but there are a few problems to solve first. Scientists at Brown University are reporting a new design that overcomes some of the key hurdles, using a delicate mix of ceramics and the wonder material graphene to produce the toughest solid electrolyte to date.
As the solution that carries the lithium ions back and forth between the anode and cathode while the battery is charged and discharged, liquid electrolytes play an important role in the function of today’s lithium-ion batteries. But these highly volatile liquids bring a risk of fire when the battery short circuits, so there is room for improvement in terms of safety.
Beyond that, alternative electrolytes could offer greater energy density and even allow for other components of the battery to be upgraded, too. For example, the anode is typically made out of copper and graphite, but scientists believe a solid electrolyte would enable the battery to function with a pure lithium anode, something that could break the “energy-density bottleneck,” according to one recently published study.