On the extraction side (process), think of it as a refrigeration cycle with an extraction column after the expansion valve before the basin; which is in place of the evaporator. Auto-atomized solvent upon injection. Cold injection through depressurization during cycling. Theoretically unlimited solvent from a small amount that is cycled - time determines the ratio. Patented.
For our utility system we create both heat and cooling as needed throughout the system with the system from +50c to below -50c within minutes. This allowed us to ditch the power hungry heaters and chillers. It is a thermal control loop attached directly to the extraction loop and they work synergistically to maximize the efficiency of the system. Patent Pending.
It is an interesting rabbit hole to go down for sure, though, there are not many papers to follow. Our refrigeration method is a new take on the traditional system. The colder it gets, the less power it uses & the more enthalpy there is available per mass of refrigerant. Below -80c propane can take on an additional 123kj/kg of enthalpy. 