Comment Re:Hotter nights (Score 1) 114
The overall semi-passive temperature control concept seems like something that deserves a lot more attention than it's gotten. I used to have a town home with no AC, but with a house fan that would blow air up through the attic... sounded like an airliner in the upstairs hallway when we turned it on. It was actually surprisingly effective, but to keep things comfortable in the summer we had to turn the house fan on at the right time in the evening, turn it off at the right time in the morning, open/close downstairs windows to draw in cool air, and then keeping the blinds closed on windows when the sun was on that side of the house.
It's the kind of thing that's annoying for humans to keep track of, but trivial to optimize with software. The hard part would be in having the actuated systems to control the vents, windows, blinds, and fans, and then software to integrate it all. Some of those things exist, but they're expensive so the ROI generally isn't there. A system like yours though basically fully automates the stuff I was doing with the house fan.
Have you ever crunched numbers on the savings? I would bet in terms of cost efficiency a simple system could pay for itself in a couple years, but in terms of energy efficiency I would think you're using at least an order of magnitude less energy than active cooling.