There seems to be a lower size limit for conventional, compressor-based refrigeration. The result is that portable cooling devices are always simple fans, or at best, evaporative cooling units. What prevents conventional refrigeration and air conditioning from working at sizes much smaller than a dorm refrigerator?
In: Technology
There’s no need? Fridges need space to store what’s being cooled so they have compressors big enough to that space. For more portable applications with smaller spaces, such as car coolers, they use thermo-electric, which also has the advantage of being able to warm the contents if you choose.
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