The whole idea, along with complete construction techniques was given to me verbaly, and would be stumpted as to where to send you, as my local , venerable {c:1980} passive solar organisation has gone darth, and is somewhat captured by industry, though if prompted still might publish there off grid solar design manual ,which had been adopted by many other organisations worldwide. https://solarns.ca/ The whole idea is based on thermal loops, which is powered, as everything is, by the fact that heat rises, and that internal cavitys/rooms tend to be cooler at the walls, causing a down draft there,and that energy can be put to work.

I know of other instalations in service for decades useing similar methods, but theses ideas and the floating slab are just physics. People are building houses here with double exterior walls acting as thermal breaks, which have no home heating installed, or ever needed, just air/heat exchange,normal domestic activity providing excess heat even @-25°c. Straw bale houses have proven to be the same. Luckily we have a long tradition of challenging building codes and getting engineers behind different ideas, but the full stack of passive technologies is still not bieng implimented at scale.