>specifically HEAT energy in space is possible, which it isn't.

https://en.wikipedia.org/wiki/Black-body_radiation

I see, yes. I was thinking more along the lines of radiating heat energy at a scale that's useable for cooling, not at the more extreme levels of over 500°C/1k fahrenheit

That's technically correct I guess, at some temperature threshold it becomes possible to bleed some fractions of energy while the material is exceedingly hot.