Schauberger
The very specific molecular motion mentioned in the opening paragraph is what is decisive here. More particularly, a mechanically induced outside-inwardly directed impulsive force is required, through which, aided by supplementary influences, Nature's principal formative substance - naturalesquely fermented, etherised fatty-matter (carbones or sweet-matter) - becomes free, unipolar and highly active and is able to overpower its opponent, which becomes passive under these influences. [The Energy Evolution - Harnessing Free Energy from Nature, The Life-Current in Air and Water]
Through the indirectly engendered cooling the density increases, whereby the frictional pressure is intensified by the mechanically-induced increase in velocity. The arrangement of the guide-vanes causes a spiral circumvolution, so that the bipolar ingredients, which rub against one another flow all the faster as their volume is reduced by the constant abrasion. Apart from the circumfluent motion another form of motion is also active which causes the bodies of the ingredients to swirl about their own axes and ensures their abrasion on all sides. [The Energy Evolution - Harnessing Free Energy from Nature, The Liquefaction of Coal by Means of Cold Flows]
See Also