4 ms·
> can't move the heat very far. Heat pipes (as in CPU heatsinks) can passively move the heat up to a feet away. Far enough to allow effective insulation betwee
by speed_spread 1y ago
> can't move the heat very far.
Heat pipes (as in CPU heatsinks) can passively move the heat up to a feet away. Far enough to allow effective insulation between cold and hot side. From there you can move the heat further away with a fan.
- adrian_b 1y agoHeat pipes only reduce the thermal resistance between 2 points. They cannot cool something below ambient temperature. Thermoelectric coolers do not compete with heat pipes. They are useful only when you want to obtain a temperature lower than the ambient temperature. Otherwise, heat pipes or liquid flow cooling are the right solutions.
- scotty79 1y agoYou could have heat pipe filled with liquid that evaporates at 5 degrees. This way it would draw heat from ambient level temperature and lead it to peltier device that would cool it below 5 deg and liquefy it back again. This way you could have peltier in the middle of your thick insulation layer with heat pipes drawing the heat into it from the cooled space and drawing the heat from the other side of it outside (using traditional heat pipes this time).
- nandomrumber 1y agoI think you may have just reinvented absorption refrigeration, previously invented by Ferdinand Carré in 1858. https://en.wikipedia.org/wiki/Absorption_refrigerator https://en.wikipedia.org/wiki/Absorption_refrigerator
- scotty79 1y agoNot really. The role of heatpipes is not to cool, just to transfer heat to and away from peltier device so it's easier to insulate hot and cold side.
- speed_spread 1y agoI was suggesting combining Peltier element _and_ heat pipes.