Covid vaccines and the off-grid fridge

In 2018 I wrote a whole week’s worth of posts on refrigeration, including a profile of the company SureChill. They manufacture a fridge that works on a completely different technology to any other fridge in the world, and they sell to developing countries for vaccine storage.

The key selling point for SureChill is that their machines stay cool even when the power goes out, and can run for days with no electricity supply. It makes them perfect for clinics running on solar power without batter...