The Future
Red team
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Together the ants can conquer the elephant.
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« on: January 30, 2010, 11:01:53 AM » |
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Wise selfishness is taking care of everyone else so that they don't bring harm to you.
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Mike
Ultraviolet team
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« Reply #1 on: January 31, 2010, 12:41:23 AM » |
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It is not a solar powered cooler but an evaporative cooler that is powered by evaporation. The humidity is what determines its cooling ability, not the sun. It would be neat to see charts describing the internal temperature under varying humidities.
Also, engineering school could do more damage than good for this girl. She should probably just hang out with gramps.
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offdalip
Blue team
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« Reply #2 on: January 31, 2010, 03:25:11 PM » |
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won't work in Bermuda, won't work in Florida, will probably work in the Saharan Desert tho'..... as long as you can find water......
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_______________________________________
"Events can move from the impossible to the inevitable without ever stopping at the probable"
"A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse...."
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The Future
Red team
Hero Member
Posts: 2135
Together the ants can conquer the elephant.
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« Reply #3 on: February 01, 2010, 05:44:57 AM » |
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oh. so you mean LOW humidity is required for it to work. If so, that makes sense.
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Wise selfishness is taking care of everyone else so that they don't bring harm to you.
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opsec
Ultraviolet team
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Posts: 4256
Expect the worst, don't just prepare for it.
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« Reply #4 on: February 01, 2010, 11:37:16 AM » |
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I don't think this woman accomplished much at all. This is a blatant redesign of the "pot-in-pot" that was invented by some guy in Africa. All she has done is remake the same basic mechanism, only it's now constructed with materials that are out of reach to most of the people who would need to use this technology in the first place. The African version has two ceramic pots nested inside each other separated by a layer of wet sand. I remember reading about it a year ago or more.
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"The difference between a pessimist and an optimist is that the pessimist usually has more information"
"Where law ends tyranny begins. Where law begins, tyranny becomes legal"
"Truth is hate to those that hate truth".
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silverseeds
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« Reply #5 on: February 01, 2010, 12:47:28 PM » |
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It is rather arid here. I might try this sometime.....
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The Future
Red team
Hero Member
Posts: 2135
Together the ants can conquer the elephant.
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« Reply #6 on: February 02, 2010, 06:21:55 AM » |
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opsec is right...i have heard of that...on this forum i think....  |
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Wise selfishness is taking care of everyone else so that they don't bring harm to you.
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Ryder
Yellow team
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« Reply #7 on: February 02, 2010, 01:01:32 PM » |
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I have bag of ice that is in my "no power" freezer. I put it on the back porch out of the sunlight in december and it is still frozen. Got to love montana in the winter.
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Gotta learn how to knit socks and mittens if you want to survive in montana.
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The Future
Red team
Hero Member
Posts: 2135
Together the ants can conquer the elephant.
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« Reply #8 on: February 03, 2010, 07:24:19 AM » |
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no competition for space there from me.
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Wise selfishness is taking care of everyone else so that they don't bring harm to you.
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oscar615
Yellow team
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Posts: 669
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« Reply #9 on: February 03, 2010, 12:14:18 PM » |
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Well I will read the article, but, if it is an evaporative cooler it will not work in high humidity areas. It cools by adding hunidity to the air. In CO we have what is called a swamp cooler. An evaporative cooler for your house. I had one in my last house and it worked OK. NOT AC but better than nothing. Trouble is that once the humidity inside the house gets high it gets muggy and stops cooling as well.
I had never heard of them at all before I moved here from Louisiana. Reason? They don't even sell them there because they don't work in high humidity areas..
However I have been wanting a solar fridge. So I will read and see if it is one step closer to reality. Thanks for the post.
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Get your head in the game.
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The Future
Red team
Hero Member
Posts: 2135
Together the ants can conquer the elephant.
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« Reply #10 on: February 04, 2010, 05:45:12 AM » |
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cool. it is a relatively short article.
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Wise selfishness is taking care of everyone else so that they don't bring harm to you.
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opsec
Ultraviolet team
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Posts: 4256
Expect the worst, don't just prepare for it.
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« Reply #11 on: March 25, 2010, 02:32:12 AM » |
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What would make one of these things work in a high humidity environment would be to use a more volitile evaporant. 99% pure rubbing alcohol used in place of water should work, but then you have the problems of procuring and storing enough alcohol, not to mention the fumes are extremely flammable.
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"The difference between a pessimist and an optimist is that the pessimist usually has more information"
"Where law ends tyranny begins. Where law begins, tyranny becomes legal"
"Truth is hate to those that hate truth".
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offdalip
Blue team
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Posts: 1194
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« Reply #12 on: March 25, 2010, 07:00:24 AM » |
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Sure, you could also use ammonia or sulfur dioxide like they did in the old days..... or freon
pf course these are all more expensive than water.....
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_______________________________________
"Events can move from the impossible to the inevitable without ever stopping at the probable"
"A democracy cannot exist as a permanent form of government. It can only exist until the voters discover that they can vote themselves largesse...."
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