COOLING THERMOSIPHON FOR DEPTH THERMO-STABILIZATION OF SOILS (VERSIONS) Russian patent published in 2017 - IPC E02D3/115 

FIELD: construction.

SUBSTANCE: according to the first version, the thermosyphon, together with the sleeve, is immersed vertically into the soil to the depth of 50 m. The thermosyphon comprises a sealed tubular housing with the areas of evaporation, condensation, and a transport area between them. The condenser in the condensation area is made in the form of a central large-diameter pipe and eight branch pipes of a smaller diameter, with external aluminium finning, located around the central pipe. The branch pipes are connected to the openings in it, and in the lower part of the central pipe there is a separator with through branch pipes for passing the vapour-drop mixture of a refrigerant (ammonia in the first version, or carbon dioxide in the second one) from the evaporator to the condenser and draining the ammonia condensate from the condenser. The through branch pipes are mounted on a pipe board. To the branch pipe for condensate drain, located on the center of the board, an inner polyethylene pipe is connected from below, which is lowered to the bottom of the evaporator housing pipe. At the lower part of the polyethylene pipe, openings are made for the transfer of a liquid refrigerant into the annulus formed by the walls of the evaporator housing pipes and the inner pipe. According to the first version (the refrigerant is ammonia), the thermosyphon is immersed in a sleeve filled with 25-30% ammonia water. The degree of the thermosyphon filling with liquid ammonia ε=0.47-0.52 at 0°C. According to the second version, the thermosyphon is filled with carbon dioxide and immersed vertically into the soil without a sleeve, the degree of filling with liquid carbon dioxide ε=0.45-0.47.

EFFECT: creating depth thermosyphons with super deep underground evaporators, with the uniform temperature distribution over the evaporator surface located in the soil, which allows touse its potential power to remove heat from the soil more effectively and to increase the energy efficiency of the device applied.

4 cl, 5 dwg, 2 ex