Abstract: An electrode system comprising: a plurality of first electrode plates (3) and a plurality of second electrode plates (5?) arranged alternatingly to form an electrode stack, each first electrode plate having a first electrode plate first busbar opening and a first electrode plate second busbar opening extending through the first electrode plate, the first electrode plate second busbar opening being larger than the first electrode plate first busbar opening, each second electrode plate (5?) having a second electrode plate first busbar opening (27a?) extending through the second electrode plate (5?), the second electrode plate first busbar opening (27a?) being dimensioned larger than each of the first electrode plate first busbar openings and aligned with the first electrode plate first busbar openings, and a second electrode plate second busbar opening (27b?) extending through the second electrode plate (5?), the second electrode plate second busbar opening (27b?) being dimensioned smaller than each of the firs

Abstract: An electrode including a metal coil and a metal wire is provided. The metal coil includes a metal selected from copper, silver, gold, nickel and aluminium. The turns of the metal coil are separated by a gap. At least part of the metal wire is arranged inside the metal coil. The metal wire and the metal coil are in electrical contact. The metal wire includes a metal selected from copper, silver, gold, nickel and aluminum. The metal wire and the metal coil are made of a same metal. The metal coil has a plurality of turns forming an elongated coil body with a central channel along a central axis of the metal coil. The metal wire extends longitudinally inside the central channel from one end of the metal coil to an other end of the metal coil along the central axis of the metal coil.

Abstract: A method of compressing carbon dioxide, CO2, including a) generating a stream of high-pressure oxygen gas and a stream of high-pressure hydrogen gas using a high-pressure electrolyser, b) feeding a reciprocating positive displacement pump comprising a reciprocating member, with a stream of CO2, and with the stream of high-pressure oxygen gas as drive gas to actuate the reciprocating member and compress the CO2 to obtain a stream of high-pressure CO2.

Abstract: A method of producing a gas mixture, said method comprising the steps of: a) subjecting water to electrolysis to obtain a hydrogen gas stream and an oxygen gas stream; b) reacting the hydrogen gas stream with solid carbon to obtain a stream comprising hydrocarbon gas, such as methane gas; and c) mixing the oxygen gas stream with the stream comprising hydrocarbon gas.

Abstract: A method of producing an electrocatalyst, comprising the steps of: a) electrodeposition or electrochemical plating of an alloy comprising nickel and a second metal on a copper, nickel or other metal substrate; and b) electrochemical or chemical dissolution of deposited second metal to obtain a nanoporous structure on the copper, nickel or other metal substrate.

Abstract: A dual gas flow device including: a first cooling plate structure, a second cooling plate structure, a plurality of electrode plates, wherein the first cooling plate structure, the second cooling plate structure and the plurality of electrode plates are arranged in a stacked configuration, wherein the first cooling plate structure forms a first end of the stack and the second cooling plate structure forms a second end of the stack, wherein the plurality of electrode plates are arranged between the first cooling plate structure and the second cooling plate structure, wherein each electrode plate includes a plurality of cooling channels extending through the electrode plate, distributed along a peripheral portion of the electrode plate, each cooling channel being aligned with the corresponding cooling channel of the other electrode plates in the stack, wherein each of the first cooling plate structure and the second cooling plate structure is provided with a plurality of connecting channels, each connecting cha

Abstract: An electrode system comprising: a plurality of first electrode plates (3) and a plurality of second electrode plates (5?) arranged alternatingly to form an electrode stack, each first electrode plate having a first electrode plate first busbar opening and a first electrode plate second busbar opening extending through the first electrode plate, the first electrode plate second busbar opening being larger than the first electrode plate first busbar opening, each second electrode plate (5?) having a second electrode plate first busbar opening (27a?) extending through the second electrode plate (5?), the second electrode plate first busbar opening (27a?) being dimensioned larger than each of the first electrode plate first busbar openings and aligned with the first electrode plate first busbar openings, and a second electrode plate second busbar opening (27b?) extending through the second electrode plate (5?), the second electrode plate second busbar opening (27b?) being dimensioned smaller than each of the firs

Abstract: A dual gas flow device including: a first cooling plate structure, a second cooling plate structure, a plurality of electrode plates, wherein the first cooling plate structure, the second cooling plate structure and the plurality of electrode plates are arranged in a stacked configuration, wherein the first cooling plate structure forms a first end of the stack and the second cooling plate structure forms a second end of the stack, wherein the plurality of electrode plates are arranged between the first cooling plate structure and the second cooling plate structure, wherein each electrode plate includes a plurality of cooling channels extending through the electrode plate, distributed along a peripheral portion of the electrode plate, each cooling channel being aligned with the corresponding cooling channel of the other electrode plates in the stack, wherein each of the first cooling plate structure and the second cooling plate structure is provided with a plurality of connecting channels, each connecting cha

Abstract: A rack-mount box (1?) for a heat-emitting device, wherein the rack-mount box (1?) comprises: a housing (3?) forming a heat-emitting device chamber, and a heat-emitting device holding structure (77) arranged in the heat-emitting device chamber and configured to support a heat-emitting device, a cool air inlet (71) arranged vertically below the heat-emitting device holding structure (77), configured to enable cool air to flow into the heat-emitting device chamber, the heat-emitting device holding structure (77) being configured to enable cool air to flow vertically past the heat-emitting device holding structure (77), wherein the housing (3) has a wall (3d) provided with a hot air outlet (73) arranged vertically above the heat-emitting device holding structure (77) to enable heated air received into the heat-emitting device chamber as cool air via the cool air inlet (71) to exit the heat-emitting device chamber, wherein the housing (3) has a roof structure (79) extending inwards in the heat-emitting chamber, th

Abstract: A pressure compensating system (1) for a dual fluid flow system, wherein the pressure compensating system (1) comprises: a fluid pipe (3) having a first fluid pipe portion (3a) and a second fluid pipe portion (3b), wherein the first fluid pipe portion (3a) has a first fluid inlet (5a) and a first fluid outlet (7a) for a first fluid flow (O2), wherein the second fluid pipe portion (3b) has a second fluid inlet (5b) and a second fluid outlet (7b) for a second fluid flow (H2) separate from the first fluid flow (O2), and a pressure compensator (11) arranged in the fluid pipe (3), separating the first fluid pipe portion (3a) and the second fluid pipe portion (3b), wherein the pressure compensator (11) is configured to move in the fluid pipe (3) between the first fluid outlet (7a) and the second fluid outlet (7b) to thereby at least partially obstruct one of the first fluid outlet (7a) and the second fluid outlet (7b) in response to a pressure differences between the first fluid pipe portion (3a) and the second flu

Abstract: A method of producing a gas mixture, said method comprising the steps of: a) subjecting water to electrolysis to obtain a hydrogen gas stream and an oxygen gas stream; b) reacting the hydrogen gas stream with solid carbon to obtain a stream comprising hydrocarbon gas, such as methane gas; and c) mixing the oxygen gas stream with the stream comprising hydrocarbon gas.

Abstract: A method of producing an electrocatalyst, comprising the steps of: a) electrodeposition or electrochemical plating of an alloy comprising nickel and a second metal on a copper, nickel or other metal substrate; and b) electrochemical or chemical dissolution of deposited second metal to obtain a nanoporous structure on the copper, nickel or other metal substrate.

Abstract: An electrode (1) comprising a metal coil (5), wherein the metal coil (5) comprises a metal selected from copper, silver, gold, nickel and aluminium, wherein turns of the metal coil (5) are separated by a gap.