I am experimenting with methods of controlling compost temperature passively.
For those of you who are familiar with Schauberger's work already, you'll know what I'm talking about already. It's a simple principle based on how copper heats.
If you apply heat to one part of copper, the entire piece of copper wants to heat evenly. This is why chefs love copper. Steel does not heat evenly: some of the food is undercooked, some of it is burned.
In my case, I soldered an end cap to a copper pipe, filled it with "imploded" (stirred) water, and placed a second cap (loose and not affixed) onto the other end. The loose cap means you can always change it, clean it, etc. This pipe can be inserted into a compost pile. What does it do?
The copper pipe crosses varying zones of heat in the compost pile. The copper pipe is always warmer than the cold zone and cooler than the hot zone. The water inside the copper pipe constantly stirs, accumulates heat, and wants to radiate to the cooler parts of the pile.
This is a cheap and easy way to stimulate a more vigorous self-stirring of a compost pile. I hypothesize that careful placement of one of these (or several) might mean that you would not have to turn a compost pile, but you would have a superior product as if you had turned the pile.
Yes, a twisted vortex shape would probably work better -- and if you can make them, contact me -- but there's little reason for a fancy and expensive contraption inserted into a compost pile. It is compost we're talking about after all!
It's up to you what kind of water goes inside the pipe: do you add biodynamic preparations? Or is water enough? How well does air (which obeys fluid dynamics too) work instead of water? It's too easy not to try.