We’ve been getting brief rains all along, too brief for any serious cooling effect. Just gets thicker.
Yesterday we had a bit of light rain, less than ten minutes. Went to the down spout to rinse soil from my hands. Found runoff to be warmer than bath water just before roof stopped draining.
One of the early experimenters in solar heating experienced a similar phenomenon. He went on to build several homes incorporating his designs, including what is now called “passive solar”.
My contribution, if ever I make it, will be in “passive geothermal” heating. The idea being, you can get heat to rise without too much difficulty, but how do you get the heat collected down there in the first place?
So I like the idea of “light pipes”. We’ll put solar collectors out there, channeling the light down through reflective tubes, and have the collectors stored underground where they’ll be safe from the weather.
Then all you would need is a pump and a fan to get your dwelling to be comfortably warmed. Add to this then the magic of being able to “pump” heat by using compressors and refrigerant gases, and your energy budget will be as low as you may desire.