3 ms·
Peltier heat pumps are inefficient; typically wanting a whole bunch of watts for achieving a small temperature gradient. So I'm wondering about the practicalit
by ctz 13y ago
Peltier heat pumps are inefficient; typically wanting a whole bunch of watts for achieving a small temperature gradient. So I'm wondering about the practicalities of powering this thing such that it could be worn as a personal item.
- vidarh 13y agoThat doesn't seem to be much of a problem as the point is not to actually cool you, but to apply a temperature change of a fraction of a degree to a tiny part of skin to trick you into feeling colder.
- EEGuy 13y agoHmmm.... and all that waste heat from the Peltier junctions go into /heating/ the room -- making it a little warmer for everyone else.
- alexwright 13y agoWhen I stick a AA battery on a Peltier, to work out which side is which on unmarked unit, it actually does "feel" very cold really quickly. Hot side is obviously also very hot, very quickly. I'd think it's more likely that the hot side is going to be the problem. Dissipating that heat without something like liquid cooling and active fans.