I started thinking about a radiator landscape because of the megalith site near the village of Carnac in France. People have all sorts of nutty ideas about why these are here, but I'm fairly sure they were put there by Sepp Holzer's great, great, great, great, great (repeat many more times) grand pappy so he could grow citrus between the stones. I mean, check out these pics!
Lots of thermal radiation from the earth below can shoot out between all these stones to fill the spaces between
Now that's a radiator!
One example of the many dolmen found on the site. Apparently when no one is paying attention, local farmers will use these for sheltering sheep and chickens....stone can do it's job for just about ever. Sepp's great, great, great, etc., grand pappy would be so proud!!!
Here's a concept drawing for a masonry array. Site selected with a winter water table that's relatively high, though probably below the frost line so that the top of the water table isn't frozen. Would want that brick to be dark and perhaps a bit rough to increase emissivity, although apparently cement has a pretty high emissivity so the brick cladding might not be required.
Die Fledermaus does not fear such a tiny ad:
Getting ready for the Better World Book kickstarter - February 2019