ENERGY SUPPLY SYSTEM

Abstract

The invention relates to a method for supplying electrical energy (10), wherein a heat accumulator (2) is charged with thermal energy (3) in a heat charging station (1), wherein the thermal energy (3) is converted into electrical energy (10) in a conversion station (5). The invention also relates to an energy supply system for supplying electrical energy (10), in particular according to said method, wherein the energy supply system has at least one heat accumulator (2), and wherein the energy supply system has a heat charging station (1) for charging the heat accumulator (2) with thermal energy (3). The energy supply system has a conversion station (5) for converting thermal energy (3) stored in the heat accumulator (2) into electrical energy (10), wherein the system has an energy generating device for generating electrical energy (10), and wherein the system is designed to convert electrical energy (10) generated by the energy generating device into thermal energy (3) and to store same in the heat accumulator (2).

Claims

1. A method for the supply of electrical energy, comprising: charging a heat accumulator in a heat charging station at a first location with thermal energy; transporting the heat charging station to a second location different from the first location; and converting the thermal energy into electrical energy in a conversion station at the second location.

2. The method according to claim 1, wherein the electrical energy is used for supplying electrically powered vehicles with electrical energy.

3. The method according to claim 1, wherein the conversion of the thermal energy into electrical energy uses at least one of: a steam turbine, a Stirling engine, a thermoelectric material, a thermoelectric generator, a Kalina process, an organic Rankine cycle process, or a steam Rankine cycle process.

4. The method according to claim 1, wherein the thermal energy with which the heat accumulator is charged is waste heat.

5. The method according to claim 1, wherein when charging the heat accumulator with thermal energy, a thermal energy storage medium of the heat accumulator reaches an average temperature of at least 200° C. and/or at most 1,300° C.

6. The method according to claim 1, wherein the thermal energy storage medium includes solid core particles and at least one phosphorus compound, wherein at least part of the phosphorus compound is an oligomer, wherein the thermal energy storage medium includes core particles with a shell, wherein the shell includes shell-phosphorus compounds which are bound to the core particles by chemisorption or physisorption, wherein the thermal energy storage medium includes matrix phosphorus compounds, at least some of the shell phosphorus compounds and/or the matrix phosphorus compounds being oligomers.

7. The method according to claim 1, wherein operating data of the heat charging station, the conversion station and/or the heat accumulator are recorded and evaluated by a higher-level logistical controller and transport routes and/or transport times of the heat accumulator are calculated and/or determined on the basis of the operating data.

8. The method according to claim 1, wherein the heat accumulator compatible with a transport system for freight containers.

9. The method according to claim 1, wherein the heat accumulator is a latent heat accumulator.

10. The method according to claim 1, wherein the heat accumulator is a sensible heat accumulator.

11. The method according to claim 1, wherein a plurality of heat accumulators form a supply network that provides a district heating network.

12. The method according to claim 1, wherein part of the thermal energy stored in the heat accumulator is released to a heat supply network.

13. Energy supply system for supplying electrical energy, comprising: at least one heat accumulator; a heat charging station that charges the heat accumulator with thermal energy; a conversion station that converts the thermal energy stored in the heat accumulator into electrical energy; and an energy generating device that generates electrical energy that is converted into thermal energy and and stored in the heat accumulator.

14. System according to claim 13, wherein the energy generating device generates the electrical energy from renewable energies.

15. System according to claim 13, wherein the thermal energy is stored and/or converted into electrical energy and released to an energy supply network, depending on thc power generated by the energy supply device and/or a demand for electrical energy of the energy supply network.

16. The method according to claim 2, wherein the electrical energy is used for charging accumulators of electrically powered vehicles.

17. The method according to claim 4, wherein the thermal energy with which the heat accumulator is charged is waste heat from an industrial facility.

18. The method according to claim 5, wherein when charging the heat accumulator with thermal energy, a thermal energy storage medium of the heat accumulator reaches an average temperature of at least 300° C., and/or at most 650° C.

19. The method according to claim 8, wherein the heat accumulator is compatible with TEU-ISO containers and/or FEU-ISO containers.

20. The method according to claim 8, wherein the heat accumulator has an inner support structure.

21. The method according to claim 9, wherein the heat accumulator is a thermochemical heat accumulator.

22. System according to claim 14, wherein the energy generating device generates the electrical energy from a wind turbine.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0053] FIG. 1 shows a simplified process diagram of an exemplary method for supplying electrical energy according to the system described herein.

DESCRIPTION OF VARIOUS EMBODIMENTS

[0054] The exemplary method for supplying electrical energy is based on a heat charging station 1 that is located at a first location. In the heat charging station 1, heat accumulators 2 can be charged with thermal energy.

[0055] The heat accumulators 2 can, for example, be structures which, in terms of their dimensions, correspond to TEU-ISO containers. In this way, the heat accumulators 2 can be transported in an uncomplicated manner with a transport system for such containers.

[0056] The heat accumulators 2 can be latent heat accumulators. The heat accumulators 2 can have a heat storage medium which, when the heat accumulator 2 is charged in the charging station 1, reaches an average temperature of 650° C. Thermal energy 7 with which the heat accumulator 2 is charged can be waste heat 3 from an industrial facility 4.

[0057] The heat accumulators 2 charged in this way can then, as shown schematically in FIG. 1, be transported to a conversion station 5. There, the heat accumulators 2 can be discharged with a discharging device 6. The thermal energy 7 from the heat accumulators 2 is first fed in the conversion station 5 to a heat engine 8, for example a steam engine or a Stirling engine. The latter is coupled to a generator 9.

[0058] Electrical energy 10 generated in this way by the generator 9 can be used, for example, to charge electrically powered vehicles 11. After being discharged, the discharged heat accumulators 2 can be transported from the conversion station 5 back to the heat charging station 1 and charged again.

[0059] The features of the invention disclosed in the present description, in the drawings and in the claims can be essential individually or in any desired combinations for realizing the invention in its various embodiments. The invention is not restricted to the embodiments described. It can be varied within the scope of the claims and taking into account the knowledge of the competent person skilled in the art.