Now i am a refregration apprentice so by know means am i qualified or mabe have no idea what i am talking. now i belief that by heating a gas you increase the pressure it is putting on the object contianing it and by cooling it you reduce that pressure. So is it possible to cool the gas at the top of a tower and heat it at the bottom with a turbine being turned by the rise in pressure. also if you where to then put another turbine on the other side where the liquid falls (a one way valve would need to be fitter) would you then concivable generate more electricity then that required to operate a secoundary refrigerant being powered by a compressor??