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The lowest temperature a freezer can achieve is typically around -23 degrees Celsius (-9 degrees Fahrenheit).
by sheepscreek 3y ago
The lowest temperature a freezer can achieve is typically around -23 degrees Celsius (-9 degrees Fahrenheit).
- billyjmc 3y agoTo be clear, you mean a freezer meant to contain food. Laboratory freezers can easily go lower without being remotely exotic (in design or construction).
- ahahahahah 3y agoSo a normal freezer is already sufficient? 250K is about -23 degrees celsius.
- westurner 3y agoThat's without laser cooling, near-field thermophotopoltaics (TPV)), or thermoelectric solid-state refrigeration. Infrared photons are thermal energy. Thermophotovoltaics and thermoelectrics convert work due to the thermal gradient into electricity. Laser cooling: https://en.wikipedia.org/wiki/Laser_cooling https://en.wikipedia.org/wiki/Laser_cooling Cooling with LEDs in reverse: https://issuu.com/designinglighting/docs/dec_2022/s/17923182 https://issuu.com/designinglighting/docs/dec_2022/s/17923182 : "Near-field photonic cooling through control of the chemical potential of photons" (2019) https://www.nature.com/articles/s41586-019-0918-8 https://www.nature.com/articles/s41586-019-0918-8 https://scholar.google.com/scholar?cites=8589611114160282602&as_sdt=5,47&sciodt=0,47&hl=en https://scholar.google.com/scholar?cites=8589611114160282602... : > This demonstration of active nanophotonic cooling—without the use of coherent laser radiation—lays the experimental foundation for systematic exploration of nanoscale photonics and optoelectronics for solid-state refrigeration and on-chip device cooling.
- _ph_ 3y agoMy basic kitchen freezer can do -25. And that is a very basic and cheap freezer, so I think it would be relative easy to push it a few more degrees down.