[John Jamieson]

If it works small and cheap why wouldn't it work big and cheap?

[balrog666]

If it works small and cheap why wouldn't it work big and cheap?

Big is never cheap.

[Down South P.E.]

I haven't analyzed the system but in general - in the world of mechanical engineering - you don't get something for nothing. "Heat Pipes" have no moving parts at all and can produce conditioned air - just not very much. I would be curious to see the specifications on some of the systems - eg. operating pressures, speeds, power requirements, etc. The numbers will tell the story. Need some thermodynamic analysis here - how much are you getting - cooling thermal energy compared to how much you are spending to run it (energy you buy from the power company). Your refrigerators and air-conditioners have a label with a COP or coeffient of performance number on them. So what is the COP on this new invention?