Originally Posted by ZytheEKS
How efficient is a compressor driven phase change cooler under negative pressure? O.O
Well the cooling power is provided by the completely sealed air con unit, the evaporator of which is sealed in the chamber, so the cooling power will not be affected by the pressure in the chamber, in fact it is the cooling effect that is causing the pressure drop.
It's important to keep in mind the system as I've designed it is all about making an efficient way of delivering the cooling power of the air con unit to all the pc components. It does not in itself add to the cooling power but is just an effective and direct way of doing this.
I believe that the heat transfer between the air con evaporator and the gaseous medium will actually be more efficient than just blowing air/gas through the fins. This is because the butane gas will actually be condensing on the fins and delivering its heat energy in a phase change manner.
I've worked out that to utilize the full 3.6KW cooling power of the air con unit would only require it to condense 64 liters of gas per minute which is a tiny amount compared to the 450 cfm my fans can produce.....in fact it may be that the system will not require fans for the cooling process. As the gas condenses to a liquid on the evaporator then more gas will take its place...there can't be a vacuum and the whole thing would be pressure driven, that's basically how heat pipes and vapor chamber work, however I am aware that both of those devices are hindered by the presence of non volatile gases in them which reduces their efficiency, so as I'm not going to be able to guarantee 100% butane content then circulating fans would overcome that problemEdited by technogiant - 8/6/13 at 2:43am