Originally Posted by
n00b 0f l337
Dissolving salt in ice makes the ice colder.
Not exactly what's going on, but kinda what's going on.
You are attempting to imbide the liquid r1150 with the argon, and therefore lower the average boiling point of the solution. The r1150 will absorb argon based on it's temperature, so more subcooling the better here.
This is useful in systems when you achieve the load desired and have extra headroom to spend. As always, lower temps, less load. So you can spend the headroom in this manner. But it does mean you will gain quite a bit of pressure and heat on the compressor/condenser side.