My understanding: As the water condenses onto the next surface layer in the stac... | Hacker News

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		eigart on July 2, 2021 \| parent \| context \| favorite \| on: Simple, solar-powered water desalination (2020) My understanding: As the water condenses onto the next surface layer in the stack, the solar heat is recycled. This is because the transition from gas to liquid releases heat. Really clever stuff! Edit: mixed up evaporate/condense

ppf on July 2, 2021 [–]

For that to work, each successive layer will need to remain cool enough for water to condense on it.

Retric on July 2, 2021 | [–]

It’s due to changes in pressure. https://upload.wikimedia.org/wikipedia/commons/thumb/3/33/Ph...

At 5ATM water condenses at a higher temperature than it boils at 4ATM.

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