Terrestrial heat probe inserted in borehole in ground surface, has vaporization space wall that is provided with fluid conduit wall inner surface at which helical fluid guide element is extended around periphery

摘要

The terrestrial heat probe (1) has a vaporization space (9) that is provided at the region of lower end. A fluid conduit (13) at upper end is extended to vaporization space over a fluid exit orifice (16), and is surrounded by a wall. A riser space (11) is extended towards the upper end (7) of vaporization space, for allowing the passage of vaporized fluid. The vaporization space wall is provided with a fluid conduit wall inner surface (19) at which a helical fluid guide element (20a) is extended around the periphery.