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A comment on Simple, solar-powered water desalination (2020). Parent comment

Re:Simple, solar-powered water desalination (2020) by eigart on Friday July 02, 2021 @03:38AM (#27708804)
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

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Re:Simple, solar-powered water desalination (2020) by ppf on Friday July 02, 2021 @04:44AM (#27709200)
For that to work, each successive layer will need to remain cool enough for water to condense on it.
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Re:Simple, solar-powered water desalination (2020) by Retric on Friday July 02, 2021 @07:14AM (#27710065)
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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