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Self-filling water bottle: BUSTED! (Patreon)

Published:
2016-05-11 09:20:48
Imported:
2026-06
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Content

Up there to rival the chocolate frying pan, or the solar powered light.  Sure its possible, just really REALLY stupid.  Actually in this case the claims are well beyond what is thermodynamically possible.  They claim they can get about a liter of water in 2 hours, whereas the thermodynamic limit (100% efficiency) is going to be about 40 hours per liter.  This is of course assuming you have hot humid air!  If the air is a more normal level of humidity, you may get no condensation at all!.  This latter point they do actually concede on their indiegogo page, although their video really doesnt make this rather important point clear.

Many thanks for your support!

Phil

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Self-filling water bottle: BUSTED!

The fact that its thermodynamically impossible seem to stop 'science communicators' from promoting this. The fact that its a really dumb, and not particularly inventive idea didnt stop the 'science communicators' from promoting this. Kinda depressing really. Indiegogo campaign still has a few days to go...

Comments

Anonymous

Just wait til the first Darwin Award goes to some poor dumb bastard that goes hiking across the desert with a bottle that "could save your life!" :-/

Anonymous

In addition to the solar panel being inadequate the peltier device is quite inefficient. The combination of the two compounds the failure.

Glen Collins

How did all of those magazines not realise they were not being drowned by their air conditioner???

Alex J.

This is just another solar freakin' stupid idea. Yes, solar is great, but not that great. It's inefficient and mediocre at best. It works amazingly in massive fields with rotating solar panels or even the combination of solar panels + water heating via concentrated reflection . Thinking that this idea is even remotely possible is just beyond stupid. If the conditions are perfect, it can work but extremely slowly). This just shows how unresearched the media is. They'd publish anything that sounds good and gets them the views, even if it makes no sense. Then you get a bunch of morons who saw it and fall for it and give their money away. I just wonder what happens at the end? Like, when these guys run away with their hundreds of thousands of dollars. Do they get sued? Is there some sort of protection for the donors? Or can they just legally take the money and leave without giving what they promised? I wonder.

Anonymous

For 30+ years now, what I carry when I go backpacking, a bikeride, or travel in third world countries is a basic 0.1um water filter pump sold for backpacking. It is light weight and small and makes fresh safe drinking water from questionable fresh water source anywhere - like a puddle of murky water if that is all you can find. The energy needed to produce this fresh water through a small reverse-osmosis water filter like this is supplied by YOU doing the work of pumping the handle and takes a few minutes to make a liter of water. You can get them at an outdoor store like REI for less than a 100 bucks for top of the line - this is a real solution that has been around for a long time and works in most situations.

Anonymous

Maybe it was designed for operation on the surface of Mercury.... let's check the solar irradiation there.... Nope... still out by orders of magnitude :P

Anonymous

The brexit talks: Do you think you can have a serious dialogue or an informed opinion with the 'knowledge' that Lithuania is the non Nato member in the EU? Your brexit talks are a disgrace. And you ask for financial support to continue?