Stabilising oxygen supplies where electricity is unreliable.

[studiot]

A novel application of standard membrane technology similar to that used in sealed system hot water tanks to stabilise the oxygen supply from a concentrator in places where the electricity supply is unreliable.

This is of particular use in developing countries where many many pneumonia sufferers are at risk and often children.

Pneumonia (often called 'the old man's friend') is apparently the biggest cause of death in under 5's in the world.

https://www.bbc.co.uk/news/av/stories-53918830

Edited August 29, 2020 by studiot

[John Cuthber]

It's interesting that, as these  are phased out, the same idea is being used to do a different job (on a smaller scale)

https://en.wikipedia.org/wiki/Gas_holder