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#1 2024-08-27 09:01:25
- tahanson43206
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- Registered: 2018-04-27
- Posts: 21,785
Desalination Technology
SpaceNut, the forum had three topics with the word "desalination" in the title, but nothing for a collection about the technology itself.
The YouTube video at this link: https://www.youtube.com/watch?v=wVW2-UA0SB4
has a number of comments inspired by the video.
Many of the comments are critical of the ideas given in the video.
What came across to me is the great variety of solutions/recommendations contributors seem to think might work.
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#2 2024-08-27 09:01:52
- tahanson43206
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- Registered: 2018-04-27
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Re: Desalination Technology
This post is reserved for an index to posts NewMars members may contribute over time.
#3:Terraformer: http://newmars.com/forums/viewtopic.php … 18#p230018
Vacuum distillation for ships
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#3 2025-02-25 11:50:33
- Terraformer
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- From: The Fortunate Isles
- Registered: 2007-08-27
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Re: Desalination Technology
Single stage desalination system for ships.
Uses vacuum distillation. Energy intensive, at 748.5 kWh per tonne; however, 740 kWh of that is low grade heat to evaporate the water. Very simple design, no complex and expensive membranes needed. Something Martians could build and maintain and I expect a lot more tolerant of brine content than reverse osmosis is.
If the vapour was condensed using compression, could we recover some of the heat to use for further desalination? If using warm seawater, could we limit the extraction to what is achievable with the energy content of the seawater itself, so only removing say 4% of the water and discharging a cold slightly saltier brine that would have quite a low environmental impact? That would let us use the entire sea surface to collect the required thermal energy.
Use what is abundant and build to last
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#4 2025-02-25 12:35:36
- Void
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- Registered: 2011-12-29
- Posts: 8,527
Re: Desalination Technology
Forced distillation does reuse the heat from the compression of steam to distilled water. The heat is shunted back to the boiler/evaporator/vacuum chamber.
Ending Pending 
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