A sublimation heat engine can convert temperature differences into mechanical work via the Leidenfrost effect. Check out @SchoolOfEng_UoE Prof Sefiane's paper in @NatureCommshttps://www.nature.com/articles/ncomms7390 …
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On a frying pan near you...
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Super amazing. Mythbusters did a bit on this: https://www.youtube.com/watch?v=yTOCAd2QhGg …
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Is this similar to when water skids over the induction plates on a cooker when a pan boils over?
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Best exhibited at home with a hot pan, and drops of water. So fun!
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That's not because the surface is colder than the liquid's melting point, but because the liquid is hotter than the surface's sublimation point. Gas is released at the interface causing the liquid to hover, same as Leidenfrost, only it's the surface turning to gas in your case.
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It’s possible that the solid CO(2) would flash sublime into vapor and create a similar effect but im not sure
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Math proof of the effect?
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