Solar Wind Energy Tower Inc. (fka SWET)

[TimeMoney]

Hot Dry Air get pulled into the top of a Cold Wet tube

Second law of thermodynamics: Heat cannot spontaneously flow from a colder location to a hotter location.
The second law of thermodynamics is an expression of the universal principle of decay observable in nature. The second law is an observation of the fact that over time, differences in temperature, pressure, and chemical potential tend to even out in a physical system that is isolated from the outside world. Entropy is a measure of how much this process has progressed. The entropy of an isolated system which is not in equilibrium will tend to increase over time, approaching a maximum value at equilibrium. However, principles guiding systems that are far from equilibrium are still debatable. One of such principles is the maximum entropy production principle. It states that non-equilibrium systems behave such a way as to maximize its entropy production.

Source: https://en.m.wikipedia.org/wiki/Thermodynamics#Classical_thermodynamics
You must remember that the tube is open at both ends to Dry Hot external environmental conditions through the law of Entropy is maintained. The differential between Hot and Cold / Humidity Differentials. The potential energy builds as the Differentials build. The Passive System “The Tube” acts as a barrier for the differentials. For Entropy to equalize the system the cold wet air must travel down the tube, due to the differential created at the top of the Tube is greater than the bottom of the tube. The way the Towers work is as air Equalizes it passes by 3 fans per tube. The pressure differential created on the propeller as the air Wizzes by generates electricity.

Good Luck To All