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A comment on Desalination system could produce freshwater that is cheaper than tap water. Parent comment

Re:Desalination system could produce freshwater that is chea... by WithinReason on Thursday September 28, 2023 @02:49AM (#37686194)
As water with different salinity levels mixes entropy increases, so you can gain energy. You could build a power plant around the water mixing:

https://www.bbc.com/future/article/20150610-blue-energy-how-...

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Re:Desalination system could produce freshwater that is chea... by aqme28 on Thursday September 28, 2023 @07:13AM (#37687973)
You're using solar energy to separate the saltwater from freshwater. You're not going to gain any more energy than that from mixing them back again, so this idea is just solar with extra steps.
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Re:Desalination system could produce freshwater that is chea... by WithinReason on Thursday September 28, 2023 @08:02AM (#37688358)
The extra step being the gain of freshwater
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