3 ms·
Plus, at that temperature, you can easily keep the conductor cooled with frozen CO2, which is pretty easy to produce / readily available.
by svckr 11y ago
Plus, at that temperature, you can easily keep the conductor cooled with frozen CO2, which is pretty easy to produce / readily available.
- krasin 11y agoThermoelectric cooling ([1]) can reach such temperatures, which will not require any gas consumables. However, it could be more energy-efficient to cool with CO2. I have not done math for that. 1. https://en.wikipedia.org/wiki/Thermoelectric_cooling https://en.wikipedia.org/wiki/Thermoelectric_cooling
- rcthompson 11y agoMost biology labs have a -70C or -80C freezer (or several) in their lab. As far as I know, they work the same way as the freezer in your kitchen. Since they're so widespread, I'm assuming this is probably the most economical way to achieve temperatures of -70C. But that might change depending on what volume needs to be cooled to that temperature.
- StillBored 11y agoFunky refrigerants... The following has an evaporator temp of -96C to -73C, and a condensing temp of -29C. https://www.chemours.com/Refrigerants/en_US/assets/downloads/h53011_Freon23_for_vlt.pdf https://www.chemours.com/Refrigerants/en_US/assets/downloads... If you scroll down in the PDF you can see a comparison with R-503 and R-13, two other low temp refrigerants. But you can't just put that in a normal refrigerator.