Originally Posted by NoL
Ganf as an engineer, an HVAC tech, and someone who builds phase units/cascades/autocascades, your missing the boat.
Dualist: He was NOT discussing using a multi stage cascade, but a single stage pusher.
Higher pressures DO NOT let you get more cooling or lower temperatures. The only thing they really give you is a higher density for heat transfer.
Similarly, the liquid nitrogen produced in 1883 produced NO COOLING EFFECT what so ever! At least until they depressurized quickly and got an adiabatic cooling effect
Unless you cross the critical point, no matter how much pressure you add, you will not be getting liquid nitrogen.
That is basic science. Look up a PT chart.
Phrase I was looking for right there. I'll be depressurizing it over the CPU with an atomizer, pulling the resultant vapor off of the block at much less than atmospheric pressure, pumping it back up in a resevoir with a radiator for dissipating the heat, and sending it back through. Not that complicated is it? The 1883 reference was to the fact that it isn't too complicated to create liquid nitrogen if it was being done in the horse and buggy era, never said it was used as a coolant.
I also did not say that adding pressure alone raises temperatures needed to reduce it to a liquid. You helped me fill in the blank by stating that it gives me a higher density for heat transfer, and thus requires a less elaborate cooling process since it speeds heat transfer up. Right? Difference in temperature needed isn't that significant, but the difference in the cooling apparatus should be quite significant, since I probably won't be able to go with some of the more advanced options on that budget-wise. They can get ridiculous.
Am I making myself clearer or just adding to the confusion? I don't have a lot of time to sit down and pull up references and numbers because I have so much crap on my plate right now between work, finishing my personal PC before I run out of time, setting my brother up for treatment, fighting back the jungle that is becoming my yard (seriously, looked out the window and saw an oak sapling at eye level, have no idea when it started growing there) and someday I'll even get a chance to shave. Starting to look like the unabomber again.