Making a better car A/C unit
A certain geeky site (hint: they named an effect for it) directs us to this Salt Lake Tribune story about a couple HS kids who created a new style of car air conditioning unit. It’s cheaper, smaller, more efficient, and more environmentally-friendly than existing units, because it uses the thermoelectric effect (aka Peltier effect) to cool the air instead of the de/compression of Freon.
I’d love to see this in action, if only to see how they’re dissipating the heat moved to the other junction.

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