Magnetocaloric cooling method produces liquid hydrogen using environmentally friendly technology

If we want to use hydrogen as fuel for cars or airplanes, or for chemical storage of excess renewable energy, it would be most efficient if it were liquid. However, this would require cooling it down to minus 253°C or 20°K, which is very energy-consuming when using a conventional cooling technology.

from Tech Xplore - electronic gadgets, technology advances and research news https://ift.tt/nAEYKfM