L R AS Published on Monday 14 February 2022 - n° 393 - Categories:hydrogen, fundamentals PV
How to store hydrogen?
Finnish and Swedish researchers have reviewed the different ways of storing it. They tested storage tanks, geological storage and other underground options.
Their conclusion is clear:
"Most of the technologies examined in this study are immature and under development, which means that research is still ongoing. In addition, the infrastructure and facilities behind some of these technologies are massive, which would require significant resources and costs."
Storage tanks can be grouped into four categories: a) metal pressure vessels such as carbon steel and low-alloy steel, b) thick load-bearing metal liners based on steel or aluminium, c) thin metallic liners with composite fibres, d) metal and plastic liners, and e) metal and plastic tanks.(c) thin metallic linings with composite fibres, (d) ultra-thin metallic linings fully encased in composite fibres and unlined fully composite pressure vessels based on fibre-reinforced shells.
The scientists noted the importance of various components such as valves, sensors and storage tanks for this type of hydrogen storage. They also examined the most common fibre-reinforced composites used for hydrogen storage tanks, including carbon fibres and glass fibres. They also looked at polyester, phenol and epoxy resins for the manufacture of pressure vessels. They found these to be the best candidates because of their high mechanical properties and resistance to temperature and corrosion.
The geological storage of hydrogen includes depleted oil and gas reservoirs, aquifers, salt caverns, abandoned mines and rock caverns.
The injection of hydrogen into underground gas pipelines and methane reactors has been studied.
https://www.pv-magazine.com/2022/02/07/large-scale-storage-options-for-compressed-hydrogen/
PV Magazine of 7 February 2022
Note: very important article
