Turn Salt Water Into FRESH! (Solar Cooled Desalinator)

How to turn salt water/seawater into fresh distilled drinking water in the event of an emergency with this compact, solar desalinator that's light weight and can fit inside a backpack. Never be without fresh drinking water! You can also use this to make questionable fresh water from lakes, rivers, or streams, drinkable. Enjoy the video!

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1/2" x 1/16" aluminum strip: Home Depot/Lowes/Ace/True Value

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[Nighthawkinlight]

Nice clean build! I think next desalinator I make the goal will be full solar operation. Either by a panel powered heat source, or maybe a vacuum solar tube. The latter would be more fun to play with, but fragile for real world use. Thanks for the great follow up. I've added this video to my video response playlist

[ProjectFarm]

Amazing build! This video deserves 10 million views! I need to build one of these ASAP! Always a thumbs up and looking forward to seeing your next video.

[mkilptrick]

Love your attention to detail and clarity.

[hasanhasn]

Just one point the specific heat capacity water is 4200 joules per kilogram whereas the specific heat capacity of air is 1000 joules per kilogram. So if the copper tube will heat up the water in the intermediate container within 1 minute, in your setup the air will heat up to the same temperature within 15 seconds but since the air is recirculating from your room to the container you made a genuine improvement

[grendul]

Absolutely amazing. I am trying to build a survival still that is lightweight and portable. This video gives me a lot of ideas for that.

[larrystrayer]

Great video. I made one using a tin can rocket stove and a solar pump circulating cool sea water. Not for a backpack but very portable.

[deeguy]

Brilliant. I saw that video by NightHawkInLight and tried to think of ways to improve it. I hope he saw your version. It was excellent. I can see the idea spreading, it would solve a bunch of problems. The steam would destroy any pathogens inside the copper coil. Now I want to build one.

[Dave-usyu]

Really nice Job! I was totally impressed with the whole build!

[stocksreview]

Nice build!! It would be very nice if you could make some more modifies:
1. use waste biomass as major/only heat source
2. use waste heat to power fan/cooling
3. wider open of salt water container for easy cleaning after several uses
4. longer copper tube or connecting copper tube to a heat sink for better cooling
5. use salt water for cooling before they go in to the cooker, achieving double purpose(save energy by preheating salt water and cooling fresh water at the same time)
6. achieving above goals and also making the system only need salt water and waste biomass refueling(after the fire started)
Good job so far!!

[billlaird]

Would like to see a circuit that would use rechargeable batteries and that the solar panel would recharge. Very nice build and video instructions.

[edmason]

I noticed how it sputters, if you want a more even flow, make sure your coil at all points goes down. If anywhere on the coil is at an incline, condensed water collects and causes the sputter. That can create pressure in the tank you're heating *and if that's not water, you can have an explosion.*

[enriquesalgadoaceves]

Great job. Just a quick tip. In order to keep the water temp(cooling coil) down or significantly cool, you have 2 options. 1 (peletier heating/cooling module)would be a bit more taskfull yet convinient in a solar operation, you could put the cold side of the peletier against part of the coil. It uses 12v 60watts so you could hook a solar panel and it could cool the copper down. The other and easir solution also has a draw back. You could use a pump to circilate the cooling water, the pump would be in an underground cistern, underground temps always remain at 50f even during the winter. The draw back would be that it would affect the setup. Just some pointers being that im into gadgets and diy myself..

[gurugnathan]

No one ever demonstrates with real sea water. I have a setup like this in India with the water cooling system. But with sea water the system gets corroded very soon as sea water contains all kinds of other dusts and dirt. I like the other build where the coil starts from the lid as it is easy to replace the bottle. It gets corroded sooner.
And don’t fill more than half else the copper gets corroded as well and it’s very difficult to clean

[maccliff]

That is so badass! I'm going to make one. You Sir, are Amazing. Thank you for posting.

[BrettonFerguson]

Solar powered moonshine... I mean desalination unit works great.

[anujchandkapoor]

Awesome project. One suggestion is to blow air from bottom to top since hot air is lighter it will be more efficient.

[bravofoxtrotllc]

neat concept, I was considering a similar project using a Pelltier Module, heat side warming the salt water and the cold side cooling the tubing perhaps.

[kelseyshackelford]

You might want to change the fan to a 5 volt fan with a USB connection so it can power by any USB power source..Including a rechargeable solar power bank. And with the air cool method..maybe consider a type of water aspiration over the coil to aid with extracting heat.

[muratelbeyli]

You could use small peltier in order to keep water cool. Also, you can power the peltier with solar panel

[TheRebelmanone]

Good ideals. If you have problems with that fan getting heat then put the fan at the bottom and have it blow across the coils instead of suck past them. So the heat will still be coming out the top as it naturally wants to anyway.