Comments on: Peltier Cooler as Dehumidifier Grows Ice Crystals http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/ Make your own energy, Grow your own food - plus science and tech stuff Tue, 10 Aug 2010 18:29:43 -0400 http://wordpress.org/?v=2.8.4 hourly 1 By: Earl http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/comment-page-1/#comment-1783 Earl Mon, 09 Aug 2010 00:34:30 +0000 http://www.elperfecto.com/?p=406#comment-1783 Alright, good luck with your experiments and I'll look forward to your update. Alright, good luck with your experiments and I’ll look forward to your update.

]]> By: Sandbird http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/comment-page-1/#comment-1782 Sandbird Sun, 08 Aug 2010 22:56:11 +0000 http://www.elperfecto.com/?p=406#comment-1782 Thanks :) i'll give a try as well. Probably you are right though..the heatsink isnt providing the proper cooling. I am pretty sure the psu is sufficient enough since its 12v. Not sure about the amps but it cant be that low :/ I'll try to freeze it better and let you know. Thanks again Thanks :) i’ll give a try as well.
Probably you are right though..the heatsink isnt providing the proper cooling.
I am pretty sure the psu is sufficient enough since its 12v. Not sure about the amps but it cant be that low :/
I’ll try to freeze it better and let you know.
Thanks again

]]> By: Earl http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/comment-page-1/#comment-1735 Earl Thu, 29 Jul 2010 16:49:51 +0000 http://www.elperfecto.com/?p=406#comment-1735 Well, the liquid cooling system certainly would make the Peltier more efficient at keeping the cool side at or below a freezing temperature. So you may have answered the question already. I'm not sure if my Peltiers would make frost if I used a simple aluminum heat sink. Another issue might be electrical current. I wonder if your PSU provides enough current to get your Peltier running all the way to 91 Watts. In one of your pictures, you show a glass of ice water on top of the Peltier. If you flip the Peltier upside-down and let the ice water dissipate the heat from the HOT side of your Peltier, that would be as good or better than my liquid cooling system. If you could keep part of the COLD side exposed to the air, then you could look for frost. If you then see frost, you know that you need a better heat sink for the HOT side. That could be a way to test your Peltier without having to purchase any other materials. Well, the liquid cooling system certainly would make the Peltier more efficient at keeping the cool side at or below a freezing temperature. So you may have answered the question already. I’m not sure if my Peltiers would make frost if I used a simple aluminum heat sink.

Another issue might be electrical current. I wonder if your PSU provides enough current to get your Peltier running all the way to 91 Watts.

In one of your pictures, you show a glass of ice water on top of the Peltier. If you flip the Peltier upside-down and let the ice water dissipate the heat from the HOT side of your Peltier, that would be as good or better than my liquid cooling system. If you could keep part of the COLD side exposed to the air, then you could look for frost. If you then see frost, you know that you need a better heat sink for the HOT side. That could be a way to test your Peltier without having to purchase any other materials.

]]> By: Sandbird http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/comment-page-1/#comment-1731 Sandbird Wed, 28 Jul 2010 17:31:46 +0000 http://www.elperfecto.com/?p=406#comment-1731 Hi, I've done something similar with a Peltier cooler. http://img69.imageshack.us/i/dsc00026ae.jpg/ http://img186.imageshack.us/i/dsc00027r.jpg/ http://img194.imageshack.us/i/dsc00028ml.jpg/ but i cant get it to freeze like yours did. I use my CPU power supply to power the fan and the peltier and i use an old AMD heatsink to cool it down. Is it cause you used a liquid cooling systems that you got the peltier to make frost ? Or is the peltier itself that is crap :/ ? Mine is a 12v 91.2 Watt. Thanks. Hi, I’ve done something similar with a Peltier cooler.
http://img69.imageshack.us/i/dsc00026ae.jpg/
http://img186.imageshack.us/i/dsc00027r.jpg/
http://img194.imageshack.us/i/dsc00028ml.jpg/

but i cant get it to freeze like yours did. I use my CPU power supply to power the fan and the peltier and i use an old AMD heatsink to cool it down.
Is it cause you used a liquid cooling systems that you got the peltier to make frost ? Or is the peltier itself that is crap :/ ?
Mine is a 12v 91.2 Watt.
Thanks.

]]> By: Majid Majeed http://www.elperfecto.com/2009/09/30/peltier-cooler-as-dehumidifier-grows-ice-crystals/comment-page-1/#comment-1199 Majid Majeed Mon, 05 Apr 2010 03:11:03 +0000 http://www.elperfecto.com/?p=406#comment-1199 Hi I am looking for Solar Dehumidifier ,for outside use to irrigate plant or tree . Hi
I am looking for Solar Dehumidifier ,for outside use to irrigate plant or tree .

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