Abstract: Stack assembly comprising a hollow external housing having a central axis, the external housing extending from a first end to a second end and enclosing a housing space, and a membrane stack comprising a plurality of membranes, wherein the membrane slack is positionable inside the external housing and a number of side plates extending substantially parallel to the central axis, wherein each side plate of the number of side plates is associated with a side of the membrane stack and extending along the associated side and a number of sealing connectors that extend substantially parallel to the central axis and adjacent with an inner surface of the external housing, wherein each sealing connector of the number of sealing connectors is configured to connect two side plates to each other, wherein the sealing connectors and the side plates cooperate to form an enclosing structure, and wherein, in use of the stack assembly, the enclosing structure encloses the membrane stack.

Abstract: The invention relates to a capacitive electrode comprising: an electrode housing comprising: ˜a number of housing walls that enclose a housing space; and ˜an opening that is operatively connected to the housing space, and wherein the opening is configured to be positioned adjacent an end membrane of a membrane stack; —a capacitive layer that is positioned in the housing space; —a current feeder that is positioned in the housing space and that is in electrical contact with the capacitive layer; —a gel layer that is positioned in contact with the capacitive layer; wherein the gel layer is provided in or adjacent to the opening such that the gel layer seals the opening, or wherein the gel layer is positioned near a bottom housing wall of the housing and the current feeder is positioned in or near the opening.

Abstract: An energy generating system using capacitive electrodes and a method therefore are disclosed. In an embodiment, the system includes first electrode and a second electrode compartments. A number of electrolyte compartments are provided between the first and second compartments. The compartments are formed by a number of alternately provided cation exchange membranes and anion exchange membranes. In use, the electrolyte compartments are alternately filled with a high and low osmotic flow, such that the first and second electrodes are charged with positively or negatively charged ions. A circuit is connected to the at least first and second electrodes for collecting the generated energy; and a switching device is included for switching between the high and low osmotic flows such that the system switches from a first energy generating state to a second energy generating state with the first and second electrodes switching polarity.