You would
not want ionized air inside the camera! Please, that discussion is way off anything useful.
Originally posted by Digitalis A similar concept to a heat pipe - however you're still faced with the problem of removing the heat from the system. And as I recall, heat pipes can only operate under finely tuned temperatures - at temperatures above or below their operating temp, thermal conductivity is limited to that of the casing itself, the heat transmitting fluid within is either completely vaporized from heat or solidified from excessive cold.
Originally posted by Digitalis I Would use peltier effect cooling ( as energy inefficient as it is) It is compact and reasonably efficient for cooling....but there would still be the problem of removing the heat from wherever the peltier effect cooler dumps it.
Magnesium conducts quite well and in this case it has a large surface area. You could approximate that is has an evenly distributed ambient temperature. That means you only need to transport the heat from the sensor to the magnesium chassi.
I like the peltiér idea even if it would drain the battery very fast. But since we need some flexibility to make the SR work I think other cooling solutions eater have to assist the peltiér, or just replace it. Heat pipes are quite good within its temperature range. It would be limited upwards by vapour condensation temperature and camera chassi temperature. For combined liquids (water, ethanol, metanol, ammonia) the condensation temperature is a
range, not a single temperature like for pure liquids. As an example, when destilling water-etanol solutions the vapourisation and condensation temperatures range between 78 and 100 degrees C. They adjust the range by adjusting the mixture and pressure.
That said, I also like my own idea of a micro fridge. Vapor-compression refrigeration is quite energy efficient, can be miniaturized and can use quite flexible pipes. A micro fridge could remove the heat from the sensor or peltiér to the chassi.
I also found a couple of other cooling technologies I don't know much about
:
https://en.wikipedia.org/wiki/Vortex_tube https://en.wikipedia.org/wiki/Thermoacoustic_heat_engine