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From the wikipedia link > At the 2007 TED Conference, Adam Grosser presented his research of a new, very small, "intermittent absorption" vaccine refrigeration
by j_koreth 10y ago
From the wikipedia link
> At the 2007 TED Conference, Adam Grosser presented his research of a new, very small, "intermittent absorption" vaccine refrigeration unit for use in third world countries. The refrigerator is a small unit placed over a campfire, that can later be used to cool 15 liters of water to just above freezing for 24 hours in a 30 °C environment.
http://www.ted.com/talks/adam_grosser_and_his_sustainable_fridge http://www.ted.com/talks/adam_grosser_and_his_sustainable_fr...
The person that from the Ted Talk linked to has a very similar device to the one shown in the BBC Article and with the exact same goal to help transport vaccines and similar through developing countries.
Congrats to the kid but something seems a bit suspicious...
- maxerickson 10y agoI haven't watched the TED talk you link, so no idea if the water was needed for that design, but I guess the difference could be in having a valve that spends the cooling only as needed. Having it be self contained is a big improvement over needing 15 kg water to buffer the cold.
- userbinator 10y agobut I guess the difference could be in having a valve that spends the cooling only as needed. That's not novel either --- amusingly enough, I saw your comment only after posting this link to someone else who actually made one of these units: https://news.ycombinator.com/item?id=12471609 https://news.ycombinator.com/item?id=12471609 From that article: Larry improved on the original design by adding a shut off valve in the connecting tube so after the Icyball was fully charged it could be shut off and the cooling cycle delayed till later, when you needed it.
- maxerickson 10y agoSure, a valve itself isn't any big deal. A good self regulating system makes it a practical portable cooler though. Time will tell.