Ummm, not really. Well, I admitted before that he brought some hard facts with him... but didn't know/try to apply them appropriately. There's a word for something that gives nothing but facts and does not apply them to a situation, it's an encyclopedia.
And your claim that it's a vague possibilty is ABSURD. It's used... every... day. Yeah, by those people who know about this type of thing the best, actually. Those crazed LN2 overclockers do this everytime that they boot up at eleventy billion gigahertz. What do you think a pressure cooker is? It's there so you can cook something at higher than 100C and it still be in water. Why? Because liquid water cannot exist at over 100C at 760 torr (sea-level pressure) and even less pretty much everywhere else. If you boil water at low it boils lightly at 100C if you put it up to high... it stays at 100C and boils faster. This is the SAME THING.
Here's how it works. They pour liquid nitrogen into what we all know is essentially a tube welded to a CPU evaporator block. The ultra cold liquid more or less pulls
the thermal energy out of the CPU via the block. Now, what happens to the energy? It heats up the liquid, but wait! The liquid pretty much is already at it's BP while sitting in air at room temp. So, instead of heating up the liquid more, the LN2 vaporizes, taking energy with it. (How much is determined by N2s energy of vaporization, also known as the latent heat of vaporization, the amount, just so happens, to always equal the same amount of energy that just went into it via the surroundings and CPU etc.) And the temperature of the liquid remains the same. Why else do you see the LN2's temps stay so linear, eh? Because the liquid is "just that cold"? No... energy input always equals increased temps at a rate determined by... the specific heat of the material. Which is pretty damned low on LN2 btw. (Low = lots of temp increase for small energy input) We don't see this, why? What I mentioned above.
Simply put, ALL of these principles are exactly the same for any other liquid in cooling. Mine uses n
-pentane because it's BP is at ~ room temp and wouldn't require more pressure than a plastic bottle can give to keep it in liquid form AND it won't cold bug your CPU.
Since you apparently want a textbook entry on everything
The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius
For each gram of liquid water at its boiling point that we convert into steam at the same temperature, we need 540. calories of energy. This is called the latent heat of vaporization or latent heat of boiling for water.
Water's = 40.68 kJ/mol
Specific heat capacity (liquid) 4184 J/(kg·K)
LN2's = Heat of vaporization (N2) 5.57 kJ·mol−1
(look up the specific heat yourself)