Evaporative cooling. Since day one.
The tower works.
Now PPAs, financing and construction.
George Elliott commented, “Based on my analysis and personal observations on site of the data collected over the past few weeks, it is obvious that Mother Nature works exactly as one would expect. As soon as the spraying of very fine liquid water particle's into the top of the tower began, the liquid particles began to quickly evaporate into the surrounding air. The evaporation requires "work" to be done, and that comes by extracting heat energy from the ambient environment, thus cooling the air, which then increases the pressure and density of the air, which air then begins a decent through the tower at accelerating speeds, ultimately to be turned horizontally toward the tunnel for evacuation. Also as expected, this evacuation maintains a balance of forces and a steady stream of cool wind, potentially very high-speed, out of the tunnel. In fact, it was a really comfortable experience standing at the end of the tunnel, where the air was steadily streaming out on me at some 6-10 degrees cooler than the ambient temperature at the time at the tower site."
