My tec liquid chiller project

[Uncle Jimbo]

I really like this set up but I have a question/concern

Seems just a little to narrow seems how a tec is 1.97 That means some of the cold side is not touching and could cause a problem.
Did you use some kind of cold plate when mounting?

littleowl - I wondered about that too. But then I looked up the 12706, and as S-I says, it is a 40mm so 1.57 inches. Close but should be OK with careful placement.

But I wonder why leuler chose those TECs. Cost does not seem to be much of an issue for him. 12709's are 10 for $50 on eBay and 12710's are about $6 each. Those are also 40mm TECs.

Just shifting to the 12710s changes the heat transfer a lot, basically moves 1.7 times the heat, but at 1.7 times the power. He could move a total of 1000W!!

With power control on the TECs, I think the 12710s would be a better choice, and it should be easy for leuler to swap them out. But he can do that when the design is checked out, or any time really.