• frank@sopuli.xyz
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    2 months ago

    Yeah, it’s a super rad tech! A bit pricey but a neat renewable that almost generates opposite to solar in a way, in that if it’s raining you’re getting some energy in the form of fresh water

    Can you ELI10 an intuitive explanation on why the salinity gradient provides energy? It doesn’t make intuitive sense to me and never has. Like why is fresh water mixing with salt water energy positive?

    • marcos@lemmy.world
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      2 months ago

      why the salinity gradient provides energy?

      It doesn’t. It’s the thermal energy that is converted to electricity.

      The salinity gradient provides an entropy dump. The dialysis machine is built in a way that the only possible way for that entropy to increase is by generating some electricity.