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Water Bottle Fills Itself From the Air

samzenpus posted about 2 years ago | from the everything-is-wet dept.

Science 173

mbstone writes "The Namib Desert Beetle generates water from water vapor via its shell, which has alternating hydrophilic and hydrophobic bumps which channel water droplets into its mouth. Scientists at MIT developed a self-filling water bottle using this technology, and have announced a contest for the best design of a countertop water-from-air generator."

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thinking ahead (1)

Anonymous Coward | about 2 years ago | (#42071141)

stuff like this we're gonna need to stave off the water riots coming to a decade near you.

Hydrophobic? (3, Funny)

drunkennewfiemidget (712572) | about 2 years ago | (#42071149)

I'm not hydrophobic, I have gay friends!

Re:Hydrophobic? (5, Funny)

Anonymous Coward | about 2 years ago | (#42071289)

I'm not hydrophobic, I have gay friends!

I'm not hydrophobic, some of my best friends are wet.

Re:Hydrophobic? (0)

Anonymous Coward | about 2 years ago | (#42071413)

I'm not hydrophobic. Some of my best friends are drips and wet blankets!

Re:Hydrophobic? (2, Funny)

Anonymous Coward | about 2 years ago | (#42071525)

Some of my best friends are wetbacks!

Re:Hydrophobic? (4, Funny)

joocemann (1273720) | about 2 years ago | (#42071555)

I'm just so thankful that god sent us this invention!

Re:Hydrophobic? (0)

Anonymous Coward | about 2 years ago | (#42072501)

You did read the part about the invention being direct application of a natural trait of a beetle, right? The sarcasm loses some of its force when it becomes less ridiculous.

Re:Hydrophobic? (0)

Anonymous Coward | about 2 years ago | (#42071561)

I'm a Hydrophile, All my [girl] friends get wet around me!

Re:Hydrophobic? (1)

Crypto Gnome (651401) | about 2 years ago | (#42072161)

And the others are all MUMMIES!

70% of my friends are water! (2, Funny)

Anonymous Coward | about 2 years ago | (#42072311)

70% of my friends are water!

3L per square meter per hour @ 75 percent humidity (5, Funny)

zill (1690130) | about 2 years ago | (#42071173)

You know what they say, the bottle is half empty for pessimists and 1 year away from being full for an optimist.

Re:3L per square meter per hour @ 75 percent humid (1)

Anonymous Coward | about 2 years ago | (#42071259)

Do the math... That's like 100mL per hour for a water bottle size. That's actually pretty impressive!

Re:3L per square meter per hour @ 75 percent humid (5, Informative)

zill (1690130) | about 2 years ago | (#42071387)

I did. It's roughly 0.7mL per hour for a 710mL coke bottle; takes around 40 days to fill it up.

Re:3L per square meter per hour @ 75 percent humid (2)

TuxWithoutPants (2719479) | about 2 years ago | (#42071439)

Just in time for the return policies in most places to run out, sounds about right.

Re:3L per square meter per hour @ 75 percent humid (3, Insightful)

sjames (1099) | about 2 years ago | (#42071653)

OTOH, my roof could easily collect more water than I use in a day.

Re:3L per square meter per hour @ 75 percent humid (3, Informative)

Formalin (1945560) | about 2 years ago | (#42072171)

Your math is off. I don't have a 710ml bottle handy, so I did a 12oz can.

Assuming 6.5cm * 12cm, ignoring the bottom and top surfaces, just the sides of the cylinder, I get 490 cm2, which is .049 m2.

3l * .049 = 0.147; 147ml/h. The can will be a 40% full in an hour, in 75% RH.

I assume the performance in drier conditions is much worse, though.

Although, once the liquid is in the container, it loses surface area? I didnt bother reading to find out whether the inside or outside or both count. math was assuming one side.. If it is the inside surface that does the work, the increasingly covered surface will give reduced efficiency as it approaches full...

Re:3L per square meter per hour @ 75 percent humid (4, Informative)

Formalin (1945560) | about 2 years ago | (#42072187)

shit, 2pi r h, not 2 pi d h.

so it should be 244cm2, .024m2, producing 73ml/h. Still respectable.

Re:3L per square meter per hour @ 75 percent humid (1)

beelsebob (529313) | about 2 years ago | (#42072587)

The maths I have says a 710 ml coke bottle should be (we don't have them here, so I'm estimating), about 7cm across and 20cm tall. That would make it's surface area roughly 439 square cm. So you would get 3L * 0.439 = 1.3 litres per hour out of that... It can fill itself in half an hour at 75% humidity. Pretty bloody impressive.

Re:3L per square meter per hour @ 75 percent humid (1)

beelsebob (529313) | about 2 years ago | (#42072591)

Uhh, I missed a 0 in the conversion to m square... still, 0.13 litres per hour. It'll take about 5 hours to fill, which is pretty good – it means a marathon runner carrying a 710ml bottle will actually have a litre to drink in the race.

Re:3L per square meter per hour @ 75 percent humid (4, Funny)

Jorgensen (313325) | about 2 years ago | (#42071687)

50% or 50% empty is a misnomer. Let an engineer look at it, and he'll show you an over-engineered bottle!

Re:3L per square meter per hour @ 75 percent humid (1)

Pezbian (1641885) | about 2 years ago | (#42071755)

50% or 50% empty is a misnomer. Let an engineer look at it, and he'll show you an over-engineered bottle!

And I'll show you there's room for Vodka. Engineers need to party more.

Re:3L per square meter per hour @ 75 percent humid (1)

Dr_Barnowl (709838) | about 2 years ago | (#42072389)

Dilute vodka with 50% water???

In Soviet Russia, vodka dilutes YOU.

Re:3L per square meter per hour @ 75 percent humid (2, Informative)

Anonymous Coward | about 2 years ago | (#42072019)

50% or 50% empty is a misnomer. Let an engineer look at it, and he'll show you an over-engineered bottle!

I am an engineer and I say that it depends on the direction. While filling up the bottle is half full, while drinking it is half empty.

Re:3L per square meter per hour @ 75 percent humid (2)

laejoh (648921) | about 2 years ago | (#42071851)

And during that year the physicist [xkcd.com] very slowly ducks!

the spice must flow (2, Funny)

Anonymous Coward | about 2 years ago | (#42071185)

NBD Nano co-founder Deckard Sorensen wants this green technology available in all walks of life; installing it on people, cars, homes and anything else you can imagine.

Next stop stillsuits.

Windtrap (1)

Anonymous Coward | about 2 years ago | (#42071271)

The correct Dune reference is, of course, the windtrap [wikia.com] .

Re:Windtrap (1)

EmperorArthur (1113223) | about 2 years ago | (#42071319)

Windtraps could also work using condensation techniques like refrigeration, or a regenerative moisture absorber. Of course, those techniques require power.

If you work with this material you might be able to create something more like Stillsuits [wikia.com] .

The material wicks sweat into tubes with one way valves. Normal walking motion compresses the tubes causing the system to act as a pump. Add a filtration system, and you're in business.

We're not there yet, but these people are making science fiction into science fact.

The bottle requires power ... (3, Informative)

perpenso (1613749) | about 2 years ago | (#42071585)

Windtraps could also work using condensation techniques like refrigeration, or a regenerative moisture absorber. Of course, those techniques require power.

So does this device. From the article: "The self-filling bottle can operate using a battery or solar cell to collect and filter the water."

Re:The bottle requires power ... (2)

Dr_Barnowl (709838) | about 2 years ago | (#42072473)

The power is to blow wind over the surface. So a windtrap doesn't need the battery.

Of course, a windtrap could have a wind-powered generator for running it's refrigeration coils. It seems that this is unnecessary with this stuff - the beetle gets by just with radiative cooling - but probably improves the efficiency of the collector surface for it to be cool.

Star Wars (4, Insightful)

Omnifarious (11933) | about 2 years ago | (#42071199)

Now we know what Luke Skywalker was repairing.

Deckard Sorenson's picture (0)

Anonymous Coward | about 2 years ago | (#42071239)

The guy looks like he catches water out of the air with his teeth.

Water Vaporware (5, Funny)

Anonymous Coward | about 2 years ago | (#42071253)

Sounds like vaporware to me.

Milsleading title (surprise!) (4, Informative)

John Bokma (834313) | about 2 years ago | (#42071267)

FTA: In the near future, it looks as if we’ll have water bottles that can capture drinkable water from the air as well.

Re:Milsleading title (surprise!) (1)

DarwinSurvivor (1752106) | about 2 years ago | (#42071351)

I don't see how the title was misleading, that exactly how I read it.

Re:Milsleading title (surprise!) (4, Funny)

John Bokma (834313) | about 2 years ago | (#42071457)

I guess your browser has HTTP_X_PREFIX_ARTICLE_TITLE set to "In the near future, it looks as if we'll have a ". I can see how that makes Slashdot more pleasant to read ;-)

Re:Milsleading title (surprise!) (4, Funny)

RivenAleem (1590553) | about 2 years ago | (#42072577)

We already have this in Ireland. All you need is a funnel. Doesn't need any special properties.

Desert beetle be damn'd (0)

Anonymous Coward | about 2 years ago | (#42071277)

TFA [astounde.com]

NBD Nano co-founder Deckard Sorensen wants this green technology available in all walks of life; installing it on people, cars, homes and anything else you can imagine.

Desert beetles be damn'd, let's steal their water, we have a contest to win.

(exaggerating due to a dark mood)...

think of the possibilities (1)

Heraclius (847789) | about 2 years ago | (#42071279)

Now if we can just combine this invention with the water-powered car...

Re:think of the possibilities (1)

TuxWithoutPants (2719479) | about 2 years ago | (#42071381)

Now if we can just combine this invention with the water-powered car...

...we will have a really slow car in more ways then one.

Re:think of the possibilities (0)

Anonymous Coward | about 2 years ago | (#42072433)

Now if we can just combine this invention with the water-powered car...

...we will have a really slow car in more ways then one.

Just attach a sail to the car instead, because it's equally ridiculous. As a plus, it's an existing [youtu.be] technology. (Top Gear's car-boat challenge)

Obligatory (-1)

Anonymous Coward | about 2 years ago | (#42071283)

Water Vaporware

How long before a supervillain uses this? (1)

Silviiro (1386523) | about 2 years ago | (#42071299)

"Now I will steal all the water from the clouds in Iran so they will blame the United States and start a massive war MUHAHAHAHA!"

Re:How long before a supervillain uses this? (2)

evil_aaronm (671521) | about 2 years ago | (#42071377)

Only if the US government refuses to pay ONE MILLION DOLLARS!!

Re:How long before a supervillain uses this? (1)

DerPflanz (525793) | about 2 years ago | (#42071855)

Don't you mean ONE MEEEELION DOLLARS?

(somehow supervillains always have an accent, also this is to pass the yelling-filter)

Air Water Machine (1, Informative)

Ozoner (1406169) | about 2 years ago | (#42071343)

Wasting my breath I know...

but machines which extract water from air have been around for a long time.

Even a humble air-conditioner does this (albeit rather inefficiently)

Google on "Air Water Machine"

Re:Air Water Machine (4, Insightful)

ModernGeek (601932) | about 2 years ago | (#42071411)

There is a difference between solving a problem with physics and chemistry with materials technologies, and solving one with electrical and mechanical engineering. It's like dissing the transistor because we have relays...

Re:Air Water Machine (2)

perpenso (1613749) | about 2 years ago | (#42071595)

The article mentions that the bottle needs power.

Re:Air Water Machine (3, Informative)

Ozoner (1406169) | about 2 years ago | (#42071627)

The air/water machine extracts water vapour via thermal methods (eg condensation).

There are of course other ways of collecting water if it is in droplet form (eg mist)

see http://en.wikipedia.org/wiki/Fog_collection [wikipedia.org] or google on "fog fence"

This latter method seems to be pretty much what the beetles are doing

Re:Air Water Machine (4, Insightful)

Dr_Barnowl (709838) | about 2 years ago | (#42072507)

This is much more efficient than the fog net, principally because the arrangement of materials means that your collection surface is fouled with water less - the droplets roll straight off the hydrophobic surface, leaving the hydrophilic surface available to attract another droplet.

The same physical process is involved regardless of which air/water collection machine you use - it's all applied thermodynamics.

Like another poster said, it's like the difference between relays and transistors - they both perform the same job (being a switch) but one is a much smarter use of material science and much more efficient.

Re:Air Water Machine (0)

Anonymous Coward | about 2 years ago | (#42071441)

This isn't a machine.

Re:Air Water Machine (0)

Anonymous Coward | about 2 years ago | (#42071613)

This isn't a machine.

There is a fan to generate airflow over the materials.

Re:Air Water Machine (2)

wvmarle (1070040) | about 2 years ago | (#42071635)

Of course, there are also dehumidifiers around. They're being sold where I live big time - especially in summer where you have those 100% humidity weeks (one time we had laundry hanging out for three days, it was 28-30C during the day, but after three days it was still not dry and we took it to the laundry shop to have it tumble dried! That's how bad it can get!). One objection I have is that those things use quite some electricity, or chemicals to attract water and that have to be replaced all the time.

This sounds like a solution that does not need any external power input, nor does it need any additional chemicals. That's great, and if they can make it work would be a huge improvement. Both for creating drinking water where there is none available, and for getting the humidity down in your home when there is simply too much water in the air.

Re:Air Water Machine (1)

perpenso (1613749) | about 2 years ago | (#42071661)

This sounds like a solution that does not need any external power input

That is only true for a moving object, a runner, vehicle, boat, etc. For stationary objects a fan is needed for air flow, the article mentions solar or battery. I suppose a good wind might work too but that limits where and when you can collect water.

Re:Air Water Machine (2)

wvmarle (1070040) | about 2 years ago | (#42071683)

One could maybe use a chimney, heated by the sun, to draw the air through the system. Though technically that's also an external power input of course, even though it doesn't need moving parts.

Re:Air Water Machine (1)

Vintermann (400722) | about 2 years ago | (#42071665)

One other issue, which I think is kind of relevant: You generally wouldn't want to drink water from a dehumidifier. I've heard that some earlier water-from-air attempts stranded on this: they make water all right, but brackish, disgusting water.

Re:Air Water Machine (1)

wvmarle (1070040) | about 2 years ago | (#42071691)

Water dripping from an airco unit should be safe to drink, that's pure condensation water. Could be as pure as distilled water - depending on how clean the air around it is.

Re:Air Water Machine (2)

Eroen (1563375) | about 2 years ago | (#42071787)

It used to be pure condensation water, then it dripped into an AC unit that is neither designed for hygiene or has ever been cleaned. The water is certainly distilled, but on no account safe to drink.

Re:Air Water Machine (1)

tbird81 (946205) | about 2 years ago | (#42071877)

About 5 months ago I bought a new dehumidifier. I used it for about a week to get the excess manufacturing chemicals off the coils (or whatever), but, as a nerd, I could not pass up this opportunity to taste a sample. I knew the water should be clean enough after its week of use, and new enough not yet be filled with too much algae and mould - I would not get the chance again.

It tasted much like tap water, maybe a slightly different smell. I probably only had a couple of glasses worth, drinking direct from the bucket. Anyway, I'm still al#$%#$NO CARRIER

Re:Air Water Machine (1)

Dr_Barnowl (709838) | about 2 years ago | (#42072533)

This ought to be easy enough to keep clean.

Hydrophobic coatings are already in use on self-cleaning glass - because the water rolls right off, water based things (like micro-organisms, algae, etc), and also dry dust, get washed off very quickly. It should be cleaner than a metallic condenser ; you might have to put a particle filter in if you can't tolerate a little dust in your water.

Re:Air Water Machine (0)

Anonymous Coward | about 2 years ago | (#42072121)

Uhh, it's called a still and they have existed for much longer than any air conditioner. We used to have to make them on our survival trips in ROTC. Just dig a hole, place a container of some sort into the hole and cover the top of the hole with a sheet of plastic or cloth, weighing down the corners and centre with stones. Each still can produce up to one cup of water per day.

Re:Air Water Machine (1)

riT-k0MA (1653217) | about 2 years ago | (#42072805)

You forgot to mention putting small stone in the middle in order to concentrate the condensed water and get it to land in the container more easily.

The air is not clean (1, Insightful)

fustakrakich (1673220) | about 2 years ago | (#42071349)

How much bacteria and mold will this thing accumulate? Better flood it with UV lights

Re:The air is not clean (0)

Anonymous Coward | about 2 years ago | (#42071537)

Combine it with one of these [ted.com] ?

Re:The air is not clean (0)

Anonymous Coward | about 2 years ago | (#42071615)

Yeah, the article mentioned batteries or solar panels would be involved in filtering. I know no one reads the articles but your moderation shows how broken /. moderation is.

Re:The air is not clean (4, Funny)

tbird81 (946205) | about 2 years ago | (#42071883)

Where could you get UV light from in the desert?

Re:The air is not clean (1, Insightful)

Anonymous Coward | about 2 years ago | (#42072367)

Maybe, just maybe from that big ass fireball in the sky that we call "sun".

Re:The air is not clean (0)

Anonymous Coward | about 2 years ago | (#42072645)

ROFL !

Next step (1)

ModernGeek (601932) | about 2 years ago | (#42071379)

Genetically engineer this process straight into the body.

Or maybe market it. I'm not good at prioritizing steps.

How broadly useful? (1)

fuzzyfuzzyfungus (1223518) | about 2 years ago | (#42071385)

The Namid Desert Beatle is a badass, of that there can be no doubt; but it also exists in a highly peculiar environment: practically zero precipitation; but fairly reliable daily fog rolling in, available to be collected. In an environment where the peaks and valleys of ambient humidity are less dramatic, and it either just rains fairly frequently, or is dry all the time, its extremely clever surface structure would be for nothing.

How much of the world actually encounters regular airborne water but virtually no usable rain?

Re:How broadly useful? (1)

Anonymous Coward | about 2 years ago | (#42071399)

The mirror in my bathroom.

Re:How broadly useful? (4, Informative)

drinkypoo (153816) | about 2 years ago | (#42071775)

How much of the world actually encounters regular airborne water but virtually no usable rain?

It's common for much of the year near coastlines but only in temperate zones, so it can only serve 40% or so of the world's population. Guess we should throw it over, like the electric car :)

Re:How broadly useful? (1)

Gordonjcp (186804) | about 2 years ago | (#42072129)

Wait, you're saying that 40% of the world's population lives in wet coastal areas that don't get rain?

Can you point to them on a map?

Re:How broadly useful? (1)

drinkypoo (153816) | about 2 years ago | (#42072313)

Wait, you're saying that 40% of the world's population lives in wet coastal areas that don't get rain?

I made that number up. And it's not that the areas don't get rain, they don't get rain every day. Sometimes they go months without rain, but they have daily fog. On the west coast of the USA you can look up maps of where the redwood trees used to be to find out the optimal locations, for example. That covers from point sur up into Canada, eh.

Any place it's foggy more days than it's rainy, it would be useful. Maybe not necessary, but what's bad about a water bottle refilling itself? Are you worried about global humidity?

Re:How broadly useful? (1)

dbIII (701233) | about 2 years ago | (#42071985)

How much of the world actually encounters regular airborne water

Everywhere on earth at ground level, but amounts of humidity vary and the less humid it is the harder it is to extract a given amount.

Re:How broadly useful? (1)

TapeCutter (624760) | about 2 years ago | (#42072277)

How much of the world actually encounters regular airborne water but virtually no usable rain?

Most places where the desert meets the sea. Even inland deserts like those found here in Oz commonly have dew forming in the early morning because of the dramatic day/night temperature difference. It's how most of the desert plants and bugs survive, that particular beetle is just an extraordinary example of the technique.

Thermodynamics (2)

quantumphaze (1245466) | about 2 years ago | (#42071397)

Water has a specific heat vaporisation of 2260kJ/kg [wikipedia.org] . So can we make a slow working refrigerator without the need for a compressor from this?

Re:Thermodynamics (2)

solanum (80810) | about 2 years ago | (#42071463)

The bottle requires an energy input, they are using solar. The submitted article is based on a slightly fuller one: http://www.pri.org/stories/science/technology/scientist-takes-inspiration-from-natural-world-to-create-self-filling-water-bottle-12154.html [pri.org]

Re:Thermodynamics (2)

Dr_Barnowl (709838) | about 2 years ago | (#42072571)

The power is for forced airflow, not for the membrane.

People already make third-world refrigerators using evaporative cooling - a large, porous, ceramic container, with another in the middle, the intermediate space filled with damp sand.

But this is a condenser, so you're harvesting both water and heat. You want to radiate that heat away, so you can continue to collect water. This is why the beetle is black - to radiate the maximum heat away from it's body in the night, so it's carapace is nice and cool for it's water collection in the morning.

The Dune novels include a similar device - thermoplastic orbs that are transparent in the day (to avoid heating up too much), and turn black at night, radiating their heat away so they can condense water to irrigate the plants rooted amongst them. Presumably, they are coated with Namib desert beetle coating (or something similar) :-)

Re:Thermodynamics (0)

Anonymous Coward | about 2 years ago | (#42071483)

Exactly. I'm guessing they still need a source of cold to make it work.

Re:Thermodynamics (1)

wvmarle (1070040) | about 2 years ago | (#42071649)

To cool, you have to vaporise water. Not condense it: this system should generate heat.

Using water to cool is done a lot already, in big scale with cooling towers you see at power plants, and on smaller scale for air conditioning systems. The disadvantage is of course that you can not cool to low temperatures, as water doesn't evaporate any more. So it works best for cooling down higher temperatures, like those in a power plant.

Re:Thermodynamics (1)

quantumphaze (1245466) | about 2 years ago | (#42071721)

I suppose I should have wrote more details. You are right about condensing heating up. The refrigerator I'm thinking of would be a system with an evaporative cooler on one end, and this material on the other. A low power heat pump fuelled only by fans.

(Speaking of heating up, can you make a mug out of it to keep my coffee hot?)

Re:Thermodynamics (1)

wvmarle (1070040) | about 2 years ago | (#42071819)

Neither will work because for a fridge you're too close to the melting point of water (it's not just because they don't use water as cooling liquid in fridges), and for your coffee mug you're too close to the boiling point (and way above ambient temperatures) to make any condensation happen.

Re:Thermodynamics (0)

Anonymous Coward | about 2 years ago | (#42071995)

I'd like low power clothes dryer chamber (or a washing machine which also dries clothes) based on this material.

I hope they will manufacture sheets of this material, so that we could just play with it, use it as roof shingles, paste transparent ones on car windows so that they don't get misty inside, and on outside raindrops don't linger - do away with windshield wipers!

Beer Bottle Fills Itself From Air (0)

Anonymous Coward | about 2 years ago | (#42071445)

Now one of those I want.

fuC4 a nigga (-1)

Anonymous Coward | about 2 years ago | (#42071477)

conSistent with the to predict *BSD's

Should've asked the Fremen (1)

Seizurebleak (2020360) | about 2 years ago | (#42071509)

I'll just stick with my stillsuit thank you very much.

Re:Should've asked the Fremen (0)

Anonymous Coward | about 2 years ago | (#42071715)

They were designed to prevent you from losing water. With a good stillsuit a skilled Fremen could survive on a thimbleful of water a day!

Re:Should've asked the Fremen (1)

Dr_Barnowl (709838) | about 2 years ago | (#42072575)

Thimbleful of extra water.

They still have to drink their own recycled pee, sweat, and poopy-water all day.

i can't do that (0)

Anonymous Coward | about 2 years ago | (#42071817)

prolly the best way is to use a badly insulated air-conditioner.
but if you have "dirty water" -or- "salty water you can try this:
you need
1) teflon coated pot from a rice cooker (*)
2) shot-glass (thick, small glass)
3) cling wrap
4) a small stone

put some dirty water in the rice-cooker-bowl, 2 cm maybe.
stand the shot-glass in the middle of bowl
cover the rice-bowl with cling wrap "airtight"
put the small stone on the cling crap, so that the shot-glass is
underneath.
but he whole contraption in the sun.
wait a few hours.
enjoy your "shot" of clean water : )

(*) http://en.wikipedia.org/wiki/Rice_cooker

Whisky version? (3, Funny)

Radak (126696) | about 2 years ago | (#42071821)

Make one that does whisky and I'm sold.

Next week (0)

Anonymous Coward | about 2 years ago | (#42071867)

Scientists study newly identified problems living in a combustible atmosphere
http://clairembelcher.carbonmade.com/projects/2693627#1

I see a trend forming: (2)

Tablizer (95088) | about 2 years ago | (#42071887)

Self-milking cows can't be far away.

Fighting the Global Warming (0)

Anonymous Coward | about 2 years ago | (#42071969)

I see usefulness of this invention beyond outdoors and space habitat life-support applications: Main greenhouse gas is not CO2, it's water vapor. If we could extract humidity from the atmosphere on a large scale without spending excessive amounts of energy, we could control greenhouse effect on Earth. Furthermore, if we would use thus obtained water for all our needs, instead of using already liquid water from environment, that would also reduce evaporation rate, further reducing atmospheric humidity . Last but not least, forced condensation without cooling has warming effect - this new material could be used as low-temperature heat source for heating in moderate climate belts when winters are mild and temperatures are a few degrees above water freezing.

Finally! (0)

Anonymous Coward | about 2 years ago | (#42072047)

Now we can colonize Tatooine!

Tatooine (0)

Anonymous Coward | about 2 years ago | (#42072291)

Okay thats the vaporisers sorted, now for the landspeeder!

Desert Beetle files suit for patent infringement (2)

einar.petersen (1178307) | about 2 years ago | (#42072401)

The BeetleJuice Law Firm on behalf of AngryBeetle Inc. today launched a patent infringement suit against MIT. Their statement reads: It might be very well that MIT has developed something clever, but this is clearly an infringement of AngryBeetle Inc.'s patented water production method. The fact that you can help millions of people is irrelevant - we want our cash now!.... AngryBeetle Inc. and BeetleJuice Law Partners - have not been available for any further comments. Thanks to Alex for inspiration ;)

Re:Desert Beetle files suit for patent infringemen (0)

Anonymous Coward | about 2 years ago | (#42072463)

Dang!

do you really think that us geeks sit up half the night thinking of funny remarks to the slashdot articles just so you can steal them over a phone conversation!!

I am filing a suit for infringing on my funny "desert beetle files lawsuit"-piece

-Alex

NB! as for the law suit I think that MIT should liquidize their assets before the beetle gets its moist tentacles on them..

Ban dihydrogen monoxide! (1)

the_arrow (171557) | about 2 years ago | (#42072407)

It kills! [archive.org]

Portability (1)

DarkOx (621550) | about 2 years ago | (#42072643)

If the performance numbers are really this good and you can run it off a reasonably sized solar cell, seems this would be great for hiking. Its no fun having to carry a large quantity of water, even relatively wet climates like the eastern US sometimes good water sources are farther apart than you'd like. That was my experience when I did the AT anyway.

I generally found I needed to carry 3 liters of water to not be thirsty between convenient opportunities to acquire more on hotter days. These were usually humid days when this thing would perform better too, as the water loss was from perspiration which you did more of because its less effective cooling the more humid it gets.

My Yard is Full of Them! (1)

some old guy (674482) | about 2 years ago | (#42072681)

These funny green thingies poking out of the ground seem to accumulate moisture from thin air every morning.

More evidence of visitation by technologically superior extraterrestrials?

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