interscape
New Member
- Joined
- Sep 5, 2006
- Messages
- 270
I think you should pursue larger Peltiers. If you go to evilbay and search for 545 Watt Thermoelectric you will find some pretty cheap. I could not find specs on the Coleman unit but I bet they are pretty meager as they are intended to operate in ideal conditions (in a cooler for cripes sake!) I built a test box/humi from a triple thick cardboard box with 2 x 1.5" square peltiers and was able to cool the box down 16 degrees room temp. I used a 450 watt computer power supply for the 12 volts.
OK so what do I do for the heat syncs (spelling)? Can I use the same ones from the Coleman units if I take them apart or do I need to buy them somewhere else. I already have good fans I can use and I am now a pro at the soldering gun.
Thanks!
What size are the ones for the Coleman? You will want to cover the TED as much as possible if not overlap, especially on the hot side. Plus buy some good thermoelectric paste like Arctic silver. I will not say it was a night and day difference but the copper heat sinks just seemed to perform better. The suck part of this whole thing is how much heat you dump back into your room. Plus once you get a TE that yields high performance you are guaranteed to get condensation which will disperse down the back of your humi making a mess of your wood. You might want to rethink your design and put the array in one place so as to simplify collection of the condensation. I hate to lead you on a wild goose chase because I have no proof that this will solve your problem but am quite sure it will give you better results that what you have found so far.
Les