All the bleeding hearts should own one of those

Ktulu
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All the bleeding hearts should own one of those

http://web.mit.edu/newsoffice/2011/fog-harvesting-0421.html

Out of thick air

MIT graduate student is working to make water available for the world’s poor by refining the tools and techniques of fog harvesting.

If enough of these are sold in the West, it will bring the manufacturing costs down, making them available for the third world.  

 

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cj
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Maybe I'm dense but I don't

Maybe I'm dense but I don't get your point.  Is your topic title intended to be sarcastic?  I think it is a pretty cool idea, though there may be less expensive ways of harvesting fog - or dew.

 

 

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 Can it be used to water

 Can it be used to water plants?


Ktulu
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cj wrote:Maybe I'm dense but

cj wrote:

Maybe I'm dense but I don't get your point.  Is your topic title intended to be sarcastic?  I think it is a pretty cool idea, though there may be less expensive ways of harvesting fog - or dew.

 

 

Not at all, I mean that, lol.

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RatDog wrote: Can it be

RatDog wrote:

 Can it be used to water plants?

I don't see why not, it's drinkable water, I think it's a very cool idea.  Fresh water is one of the major problems facing our future.

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 I can see how that would

 I can see how that would be very useful as part of a survival kit. If you could make one small enough, but still effective to provide water for one or two people I imagine you could do decent business among hunters in dry climates. 

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That's a tool mean't for a

That's a tool mean't for a desert kit.


Kapkao
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So why would this work and a

So why would this work and a piece of canvas bag, tent, or fine wire mesh not work for "fog harvesting"?

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Kapkao wrote:So why would

Kapkao wrote:

So why would this work and a piece of canvas bag, tent, or fine wire mesh not work for "fog harvesting"?

I'm guessing that would work also, just not as efficiently.  

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KillerCroc wrote:That's a

KillerCroc wrote:

That's a tool mean't for a desert kit.

The perfect thing for those foggy, humid desert mornings... It could work on the moon too... I think the idea is to provide DRINKABLE water, not to produce water out of thin air.  You need humidity in the air to have fog.

 

Edit: mistype

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Ktulu wrote:Kapkao wrote:So

Ktulu wrote:

Kapkao wrote:

So why would this work and a piece of canvas bag, tent, or fine wire mesh not work for "fog harvesting"?

I'm guessing that would work also, just not as efficiently.  

 

Your next quote, Ktulu is the answer to Kap's question.  Drinkable water.  Canvas bags, tents, wire mesh, and a slew other materials would collect water just fine.  But there are three problems I can think of.  The first one is cross contamination - just where has that canvas bag been and just what are you drinking from it?  Secondly, the canvas bag, tent, etc would also absorb some of the water collected and is there fore less efficient.  When you are talking the minuscule amount you are going to get, that bit soaked up by the canvas or even nylon is significant waste.  Maybe not as significant for the wire mesh -

There is also the size of the interstices in the material.  Water will collect best on a mesh of a certain size and certain gap shape due to the molecular size and shape of water molecules.  I don't know what that may be, but this material is most likely optimized for water so you aren't collecting the acid in acid rain for example as well as water.

 

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Ktulu wrote:KillerCroc

Ktulu wrote:

KillerCroc wrote:

That's a tool mean't for a desert kit.

The perfect thing for those foggy, humid desert mornings... It could work on the moon too... I think the idea is to provide DRINKABLE water, not to produce water out of thin air.  You need humidity in the air to have fog.

 

Edit: mistype

 

There are techniques to get water in the desert. I would think that this product could be used in conjunction with a solar still, which is basically a sheet of plastic over a hole with a drinking container in the center. The plastic creates a greenhouse effect evaporation and water condenses on the plastic and if built properly, should run to the center of the plastic and into the drinking container. Best application of current techniques would get you up to a quart of water a day with a 6x6 still. This product might improve that. So if it is better at attracting water than plastic, it would be just the thing to include in your desert survival kit.   

If, if a white man puts his arm around me voluntarily, that's brotherhood. But if you - if you hold a gun on him and make him embrace me and pretend to be friendly or brotherly toward me, then that's not brotherhood, that's hypocrisy.- Malcolm X