A close-loop temperature equalization device, including multiple flowpaths containing a heat exchange fluid, comprising: --Heat gaining device, for being installed in a natural heat storage body and arranged to transfer heat between the natural heat storage body and the heat exchange fluid flowing through the close-loop temperature equalization device, in which the flowpath inside the heat gaining device is inclined with respect to the horizontal, the heat gaining device comprising: a first fluid inlet/outlet port at a lower position of the heat gaining device such that it allows the heat exchange fluid having relatively low temperature to flow in to the heat gaining device, and a second fluid inlet/outlet port at a higher position of the heat gaining device such that it allows the heat exchange fluid having relatively high temperature to flow out of the heat gaining device; --Heat releasing device, in contact with a temperature differentiation body and arranged to transfer heat between the heat exchange fluid and the temperature differentiation body, the heat releasing device comprising: a third fluid inlet/outlet port arranged to allow the heat exchange fluid having relatively high temperature to flow in to the heat releasing device, and a fourth fluid inlet/outlet port arranged to allow the heat exchange fluid having a relatively low temperature to flow out of the heat releasing device; --First Pipeline structure, connected to the first fluid inlet/outlet port of the heat gaining device and the fourth fluid inlet/outlet port of the heat releasing device for transporting the heat exchange fluid between the heat gaining device and the heat releasing device; --Second Pipeline structure connected to the second fluid inlet/outlet port of the heat gaining device and the third fluid inlet/outlet port of the heat releasing device for transporting the heat exchange fluid between the heat gaining device and the heat releasing device; characterised in that the exterior of the first and second pipeline structures (301,401) being covered by a heat insulation member and the heat releasing device further comprising: --An auxiliary fluid pump arranged to selectively pump the heat exchange fluid through the heat gaining device, the heat releasing device, the first pipeline structure and the second pipeline structure in a first direction and a second direction. --Heat gaining device, for being installed in a natural heat storage body and arranged to transfer heat between the natural heat storage body and the heat exchange fluid flowing through the close-loop temperature equalization device, in which the flowpath inside the heat gaining device is inclined with respect to the horizontal, the heat gaining device comprising: a first fluid inlet/outlet port at a lower position of the heat gaining device such that it allows the heat exchange fluid having relatively low temperature to flow in to the heat gaining device, and a second fluid inlet/outlet port at a higher position of the heat gaining device such that it allows the heat exchange fluid having relatively high temperature to flow out of the heat gaining device; a first fluid inlet/outlet port at a lower position of the heat gaining device such that it allows the heat exchange fluid having relatively low temperature to flow in to the heat gaining device, and a second fluid inlet/outlet port at a higher position of the heat gaining device such that it allows the heat exchange fluid having relatively high temperature to flow out of the heat gaining device; --Heat releasing device, in contact with a temperature differentiation body and arranged to transfer heat between the heat exchange fluid and the temperature differentiation body, the heat releasing device comprising: a third fluid inlet/outlet port arranged to allow the heat exchange fluid having relatively high temperature to flow in to the heat releasing device, and a fourth fluid inlet/outlet port arranged to allow the heat exchange fluid having a relatively low temperature to flow out of the heat releasing device; a third fluid inlet/outlet port arranged to allow the heat exchange fluid having relatively high temperature to flow in to the heat releasing device, and a fourth fluid inlet/outlet port arranged to allow the heat exchange fluid having a relatively low temperature to flow out of the heat releasing device; --First Pipeline structure, connected to the first fluid inlet/outlet port of the heat gaining device and the fourth fluid inlet/outlet port of the heat releasing device for transporting the heat exchange fluid between the heat gaining device and the heat releasing device; --Second Pipeline structure connected to the second fluid inlet/outlet port of the heat gaining device and the third fluid inlet/outlet port of the heat releasing device for transporting the heat exchange fluid between the heat gaining device and the heat releasing device; characterised in that the exterior of the first and second pipeline structures (301,401) being covered by a heat insulation member and the heat releasing device further comprising: --An auxiliary fluid pump arranged to selectively pump the heat exchange fluid through the heat gaining device, the heat releasing device, the first pipeline structure and the second pipeline structure in a first direction and a second direction.