Comments on: Peltier Cooler as Dehumidifier Grows Ice Crystals

By: Earl

Earl — Mon, 26 Dec 2011 17:11:01 +0000

I don't remember how much current it was, but I connected a 12V battery directly to the Peltier, so the Peltier consumed as much current as it wanted. Did you measure the temperature of your Peltier? On a side note, I hope you know that Jesus Christ is alive and will return at the end. I hope you have accepted his free gift of salvation.

By: Jing

Jing — Mon, 26 Dec 2011 14:37:42 +0000

Hello, I am using 12v 6amp i also use heat-sink from my intel CPU with thermal paste on it but still it didn’t get the frost ice, how many ampere did you use?

By: Earl

Earl — Mon, 09 Aug 2010 00:34:30 +0000

Alright, good luck with your experiments and I’ll look forward to your update.

By: Sandbird

Sandbird — Sun, 08 Aug 2010 22:56:11 +0000

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

Earl — Thu, 29 Jul 2010 16:49:51 +0000

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

Sandbird — Wed, 28 Jul 2010 17:31:46 +0000

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

Majid Majeed — Mon, 05 Apr 2010 03:11:03 +0000

Hi
I am looking for Solar Dehumidifier ,for outside use to irrigate plant or tree .