Sitting here reading and it just hit me on how this colling works, in my little converted front bedroom that I made into my office, my computer uses a lot of energy, it has a 1200 watt power.supply and the cooling fans on it produce allot of heat, this room will run about 78?F to 85?F even in the winter time with the only vent turned off, well I have to do some free cooling since it is now cooler outside I can just open the window a little.
Now I can see where this system could be put to use in a telephone exchange or computer rooms/data centers where the operating equipment drives the temperature too high and it needs to be brought back down, this nothing more then opening the window, but through a heat exchanger to keep the environments isolated, I could see where this could save energy usage at certain times of the year, this has been used in large high rises and office buildings where the inside areas in the core of the building get too hot even while the exterior areas are running the heat, so why not just transfer the heat from the core areas to the exterior areas and save even more?
I know one thing is this type of system would be very complicated and would take a very specially trained person who understood the operation to keep it working but it would be feasible.