this post was submitted on 21 May 2025
43 points (70.5% liked)
Futurology
2686 readers
86 users here now
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
These are just Peltier cooling mechanisms highly refined it seems. If they've increased the efficiency enough that a full-sized refrigerator can keep food cool without refrigerant or a constant electrical signal, that's huge. AFAIK Peltier coolers still need some electrical input, though minimal.
Peltier is horribly inefficient though.
Efficient enough to run a fan from the heat of my woodstove, so it's got that going for it. And there are 12V coolers people keep in their cars. How efficient does it need to be? If they've improved on standard peltier junctions, maybe it is worth it. Why so negative?
I've used 12v coolers. They don't cool, at best they maintain temp, under the right conditions.
How efficient does it have to be? It needs to at least equal compressors.