Geothermal exchange system using a thermally superconducting...

F - Mech Eng,Light,Heat,Weapons – 25 – B

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F25B 29/00 (2006.01) F24H 4/02 (2006.01) F24J 3/08 (2006.01) F25B 30/02 (2006.01) F25B 41/00 (2006.01) F25B 49/02 (2006.01)

Patent

CA 2642202

A geothermal exchange system comprises an above ground refrigerant loop (12) operating in a cooling or a heating mode and coupled to a geothermal ground coil (48) with a high thermal superconductor segment (40) and a thermal coupler (44) The above ground refrigerant loop (12) includes a compressor (20), two heat exchangers (36,66), a reversing valve (28), an expander (62) and a controller (16) with a temperature sensor (26) One heat exchanger (66) is thermally coupled to the high thermal superconductor segment (40) The geothermal ground coil (48) is made from a thermal superconductor material, placed in an earth source and operates as a heat pipe The high thermal transfer superconductor (40) when connected to the geothermal ground coil (48) allows to discharge the heat of condensation to the earth source during the cooling mode or to withdraw the heat of evaporation from the earth source during a heating mode.

L~invention concerne un système d~échange géothermique, comprenant une boucle de réfrigérant en surface (12) fonctionnant en mode de refroidissement ou en mode de chauffage et couplée à un serpentin géothermique enterré (48) comportant un segment à haute supraconductivité thermique (40) et un coupleur thermique (44). La boucle de réfrigérant en surface (12) comprend un compresseur (20), deux échangeurs de chaleur (36, 66), une soupape d~inversion (28), un détendeur (62) et un régulateur (16) doté d~une sonde de température (26). Un échangeur de chaleur (66) est couplé thermiquement au segment à haute supraconductivité thermique (40). Le serpentin géothermique enterré (48) est constitué d~un matériau thermiquement supraconducteur, placé dans une source terrestre et jouant le rôle de tuyau de transfert de chaleur. Le segment à haute supraconductivité thermique (40) est raccordé au serpentin géothermique enterré (48) pour évacuer la chaleur de condensation dans la source terrestre lorsque le système fonctionne en mode de refroidissement ou pour extraire la chaleur d~évaporation de la source terrestre lorsque le système fonctionne en mode de chauffage.

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