Cooling with magnet! Developing magnetic refrigeration to make liquid hydrogen (2020/02/06)

Although it may seem strange, magnets can be used to cool other materials. This technology is called "magnetic refrigeration."
You may be wondering how this is possible. In this video, we illustrate the principle using air conditioners and rubber balloons.
Researchers at NIMS are working on magnetic refrigeration to enable liquid hydrogen to be made, stored and transported more efficiently, contributing to the development of a hydrogen economy in the near future.
FYI: In this video, we cooled a piece of gadolinium metal, which exhibits ferromagnetism at room temperature in the same way that iron, cobalt and nickel do. Gadolinium loses its ferromagnetic properties when it is heated even slightly. This makes it useful in magnetic refrigeration.
Original Japanese version was published at • 磁石がモノを冷やす！「磁気冷凍」で水素を液化... on 2020/02/06.

[@jozefnovak7750]

Super!

[@1fpsdroppingball]

This channel is pretty cool

[@thelazy0ne]

Interesting, but the title suggested something and the video delivered nothing.

[@Qeswara]

I'm a bigger fan of heating with magnets, heating with magnets means you can get heat without electricity and without induction coils, that would be really useful !!

[@zebo-the-fat]

but you still need to supply energy to move the magnet

[@RWBHere]

This video appears to be only a thinly-disguised advertisement for Toyota Hydrogen cars. And more than 95% of the Hydrogen which is available at those scarce refilling stations is supplied by oil companies..In short, a Hydrogen economy is a pipe dream.
Hydrogen-powered vehicles, even when using fuel cells, are about as inefficient as fossil-fuelled vehicles, in terms of energy used compared to energy available in the fuel. They are around 25% efficient at best; about the same efficiency as a Diesel-fuelled car. In contrast, fully electric cars are achieving at least 70% efficiency. And electricity doesn't have to be mined, refined or transported in trucks to the point of sale.

[@user-pr6ed3ri2k]

The video is nice, but as @thelazy0ne already said, there is nothing about liquid hydrogen.