I am fairly certain that others have made better saves about this, but here I go:
When I was playing around with DEUT and EXOT recently, I noticed that when I ran electrons to Deut, it cooled down. I was confused, since the Deut was getting to -201 Degrees, yet the electrons were at over 500 degrees.
I created a testing area to try it out, and it seems that it is one of the properties of Deut.
Even though others have probably discovered this, here is my rendition of it: