IIRC, the boiling temp is like 34C. The liquid boils and the gas rises. The gas is denser than normal air, so it remains settled inside the jar without rising to mix with the air from the rest of the room. When it naturally cools back down to less than 34C, it joins with the rest of the liquid in the bottom of the jar. Repeat this process dozens of times.

I believe you need some sort of cool radiator to A) facilitate faster condensation so the amount of Novec 7100 in gas form doesn't rise out of the jar, and B) keeps the ambient Novec liquid temp lower, otherwise it would naturally settle on a temp that is relatively close to 34C.

The Novec liquid doesn't magically make heat disappear. It just makes it easier to move it away from the chips, which is what we want. After that, you still have to find a way to remove the heat from the liquid and/or gasses, and get it out of there.