Comment on Desiccant dehumidifiers are fascinating... but not for everyone [29:19]

• StarMerchant938@lemmy.world ⁨4⁩ ⁨days⁩ ago

  They do the thing until the thingymajogger flips, obvs.

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  • WhiteRice@lemmy.ml ⁨4⁩ ⁨days⁩ ago

    Funny you should ask youtu.be/RSTNhvDGbYI

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• Yaztromo@lemmy.world ⁨4⁩ ⁨days⁩ ago

  Short answer — the internal “switch” is held in the on position by a magnet. Magnets become much less effective when they get hot, and while there is still water in the cooker the maximum temperature will be 100C. Once all the water boils off the temperature quickly rises — but the magnets stop being able to attract the switch when they hit around 102 - 103C or so and release the switch, turning the machine off.

  So all has is a switch connected to a magnet next to the bottom of the pot. That’s it. Physics does the rest.

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  • NihilsineNefas@slrpnk.net ⁨4⁩ ⁨days⁩ ago

    en.m.wikipedia.org/wiki/Curie_temperature I doubt they’re using magnets, especially considering how hot they have to get to lose their magnetism as you suggest.

    Most thermostats in electronics such as kettles and cookers use a bi-metallic strip inside, where the two metal layers expand at different rates. The contacts in the switch are physically pulled apart by the strip bending when the desired temperature is reached. en.m.wikipedia.org/wiki/Bimetallic_strip

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    • lime@feddit.nu ⁨4⁩ ⁨days⁩ ago

      responding to someone going “i researced and did an enhire presentation on this thing” with “well wikipedia says you’re wrong” is peak internet.

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      • WhyJiffie@sh.itjust.works ⁨4⁩ ⁨days⁩ ago

        the answer was from a different person who made the presentation

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      • NihilsineNefas@slrpnk.net ⁨4⁩ ⁨days⁩ ago

        Not sure where they said they “did an entire presentation on this thing” or where they got their information from. I’m only adding some context to what I know of how thermostats work. I would gladly admit I’m wrong if provided with some evidence.

        If you want a visual demonstration of a thermostat working here’s a video.

        youtu.be/eRnYp8foJks

        (For context I don’t mean to come across as one of those “well ackshually” asshats, I just like watching people take apart electronics (was also slightly obsessed with magnets as a kid. MANY hard drives were sacrificed to my curiosity lol).)

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