William Bronson wrote: Neat ideas.
The berm could be covered in black plastic,to keep the soil dry and therefore insulating.
Or would clear plastic be better?
Both could add solar gain.
Dylan Kirsch wrote:Hans, I wonder I you could design something that uses water to store and transfer heat into the ground. You would have to have a design that has the water thermosyphon where it needs to go.
I got this tall by not having enough crisco in my diet as a kid. This ad looks like it had plenty of shortening:
I'm going to build a sauna trailer and document the entire process in video and ebook form!https://permies.com/t/121209/build-sauna-trailer-document-entire