Polarized geothermal probe for recovering geothermal energy, has vortex element for forming uniform annular space distance between cladding tube and inner tube to inhibit heat exchange between return line and inlet via wall of inner tube

摘要

The probe has a vortex element (6) for forming a uniform annular space between a cladding tube (1) and an inner tube (2) to inhibit a heat exchange between a return line (4) and an inlet (3) via a wall of the inner tube. The inner tube is insulated by an insulation-part (7). An annular space (5) of the cladding tube and an amount of heat carrier medium e.g. liquid or gas, in the inlet are reduced under increasing flow velocity of the return line in the inner tube.