only that the concept
The skin of the aircraft is used to condense the coolant.
The concept is to keep the liquid coolant under great pressure so that it remains in liquid form as long as possible when sprayed directly on the cylinders/heads. The liquid turns to vapor and cools through evaporation just like the sweat on your skin. The heated vapor is then collected and cooled to liquid form through a network of tubes in the skin of the aircraft.
I probably don't need to point how this would be problematic for an Military aircraft.
All the best,
Crumpp