Peltier Cooler Box

[danielsun]

Hi guys,
I have been testing the temp with the sensor directly on the back of the peltier module(cold side of course) then I made a copper finger with the temp sensor on that though it was 32deg and it dropped to 19 deg.
From what i had been reading on other DIY's I was expecting it to go down to at least 0 or 2 degrees.

Cheers Daniel.

[solissydney (Ken)]

With my cardboard box now lined with 0.5 mm AL. I am now only able to cool the interior of the box to 20 degrees. Without the Al. it always drops down to 15 degrees in 15 min. Don't ask me about the conductivity of the Aluminium. No one seems to know. So, looks like it is back to cardboard only.

Ken

[mill (Martin)]

How weird
My tec on the inside of the box has ice on it when it is 25C.
But then again i am a bit of a smart a$$
When you build a peltier box you just make it bigger so you can put some special ice bags in it that have been frozen to -15.
I have something here that can be frozen to twice colder then dry ice.
So that is -190C

See here http://cgi.ebay.com.au/10-Techni-Ice...item3a568d12a4

You can cut them in nice blocks and are good for when the fridge stuffs up.