Thermoelectric device for storage or conversion of energy

A thermoelectric device for energy storage or energy conversion, the device comprising:

• at least two main pressurized tanks which is thermodynamic work and hydraulic transit,
• wherein each of the tanks containing at least one propellant fluid and sharing at least one hydraulic fluid moving between them in an opposite manner via at least one liquid communication equipped with at least one hydroelectric conversion machine such as a pumping assembly or a turbining assembly;
• a heat exchange system, exchanging heat with the propellant fluids comprises at least one evaporator and at least one condenser;
• and
• a hot thermal reserve and cold thermal reserve, that is connected with the thermodynamic work tank, wherein the heat exchange system of the tank exchanges heat with both the reserves through pipes,
• wherein the hydraulic transit is connected with a separate cold thermal reserve and the heat exchange system exchange heat with the cold thermal reserve through pipes in order to maintain low pressure;
• wherein the thermodynamic sequence consisting of an expansion and then a contraction of each of the propellant fluids is carried out slowly, discontinuously, and quantitatively bounded in mass, by the variation of the volume which contains them in the large MPT, that the propellant fluids either work by alternating state changes of at least two states among the three liquid, gaseous, supercritical states, or work in the exclusively supercritical state by large alternating variations in their supercritical density, and that the pressure of the propellant fluid within the MPT of Hydraulic Transit is quasi-constant and close to the minimum value encountered in the range of pressures covered by the propellant fluid within the MPT of Thermodynamic Work.