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US 2015/0091301 A1Published application
Units and methods for energy storage
AssigneeNasser Berg Energie GmbH
InventorsWolfgang Littmann, Norbert Boehm
Life of this patent
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AssigneeNasser Berg Energie GmbH
InventorsWolfgang Littmann, Norbert Boehm
Estimating the term…
The invention relates to a pumped storage power plant (1) comprising at least one lower storage space (11) that is arranged underground and at least one upper storage space (12) that is separate from the lower storage space and arranged above ground or underground, wherein the lower storage space (11) is arranged in a greater depth than the upper storage space (12), and comprising at least one liquid line (15, 16) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to at least one hydraulic force and/or work machine (26, 27) of the pumped storage plant or can be connected via switchable valves (28, 29), and comprising at least one pressurized gas line (17, 18) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to a pressurized gas force and/or work machine (21, 22) of the pumped storage power plant or can be connected via switchable valves (24, 25), wherein the pumped storage power plant is configured for transporting a liquid medium (5, 7) from the upper storage space (12) into the lower storage space (11) and vice versa through the liquid lines (15, 16) and the hydraulic force and/or work machine (26, 27), and the pressurized gas force and/or working machine (21, 22) is configured for optionally producing a pressurized gas pressure of a pressurized gas (4, 6) at least in the lower storage space (11), which gas pressure can differ from a gas pressure in the upper storage space (12). Furthermore, the invention relates to a power plant and to methods for energy storage.
A pumped storage power plant (1), comprising at least one lower storage space (11) that is disposed underground and at least one upper storage space (12) that is separate from the latter and disposed above ground or underground, wherein the lower storage space (11) is disposed at a greater depth than the upper storage space (12), and comprising at least one liquid line (15, 16) that is/are routed in the upper storage space (12) and in the lower storage space (11) respectively and that is/are connected to at least one hydraulic power engine and/or work machine (26, 27) of the pumped storage power plant (1) or can be connected via switchable valves (28, 29), and comprising at least one pressurized gas line (17, 18) that is/are routed in the upper storage space (12) and in the lower storage space (11) respectively and that is/are connected to a pressurized gas power engine and/or work machine (21, 22) of the pumped storage power plant (1) or can be connected via switchable valves (24, 25), wherein the pumped storage power plant (1) is set up to transport a liquid medium (5, 7) from the upper storage space (12) into the lower storage space (11) and vice versa through the liquid lines (15, 16) and the hydraulic power engine and/or work machine (26, 27), and the pressurized gas power engine and/or work machine (21, 22) is/are set up to optionally generate a gas pressure of a pressurized gas (4, 6), at least in the lower storage space (11), which gas pressure can differ from a gas pressure in the upper storage space (12).
A power plant (9), in particular a pumped storage power plant (1) as claimed in any one of the preceding claims, or compressed-air energy storage plant, comprising at least one first and, separate therefrom, one second storage space (11, 12) at the same depth level or at differing depth levels, and comprising at least one pressurized gas line (17, 18) that is/are routed in the first storage space (11) and in the second storage space (12) respectively and that is/are connected to a pressurized gas power engine and/or work machine of the power plant or can be connected via switchable valves, wherein the pressurized gas power engine and/or work machine (21, 22) is set up to optionally generate a gas pressure of a pressurized gas (4, 6) of differing magnitudes in the first and the second storage space (11, 12) respectively, and comprising a control means (13), which is set up, upon the expansion of pressurized gas (4, 6) out of one storage space (11, 12), to transfer the expanded pressurized gas into the other storage space (11, 12).
A method for energy storage by means of a pumped storage power plant (1) as claimed in claim.
Dependencies are inferred from the claim text.