摘要:
L'invention concerne un nouveau système de régulation de pression d'un réacteur d'électrolyse ou de co-électrolyse à haute température (EHT) ou d'une pile à combustible SOFC fonctionnant sous pression. Le fonctionnement du système consiste essentiellement à : - réguler en amont de l'une des chambres, le débit de gaz humide D H de façon à garantir la stabilité électrochimique du point de fonctionnement prédéterminé; - contrôler la pression grâce aux vannes de régulation V H , V O et V Air agencés en aval de l'empilement sur les gaz dont celui humide, qui sont en outre généralement chauds.
摘要:
Die Erfindung betrifft ein Verfahren zur Druckregelung auf der Kathodenseite eines Brennstoffzellensystems (2) mit wenigstens einer Brennstoffzelle (3), mit einer Luftfördereinrichtung (6), welche auf einer gemeinsamen Welle mit einem Expander (8) angeordnet ist, und mit einem Systembypass, welcher über eine Systembypassleitung (13) und ein Systembypassventil (14) den druckseitigen Ausgang der Luftfördereinrichtung (6) mit dem druckseitigen Eingang des Expanders (8) verbindet: Die Erfindung ist dadurch gekennzeichnet, dass zur Erhöhung des Drucks in der Brennstoffzelle (3) das Systembypassventil (14) geöffnet wird.
摘要:
The present invention is directed to devices for controlling fluid flow and pressure. An adjustable pressure regulator has a movable shuttle, shuttle housing, a high pressure diaphragm, a low pressure diaphragm and a fluidic conduit connecting the inlet to the outlet. One or more of these components are adjusted to modify the outlet pressure of the regulator. The inlet restrictor allows incoming fluid to enter the pressure regulators when the pressure of the incoming fluid is higher than a threshold level. The inlet restrictor can prevent a partial vacuum from forming inside a pressure regulator. The semi-automatic valve is opened manually but closes automatically when fluid flowing through the valve is insufficient to keep the valve open. The semi-automatic valve can also be a semi-automatic electrical switch. The by-pass valve directs the flow to bypass the pressure regulator, when the flow is slow or has low pressure.
摘要:
The present invention relates to a device for the storage and delivery of liquid and/or gaseous media under pressure, having a media container (1) of a plastics material, preferably of polyamide, receiving the medium, at least one valve connection element (2), connected to the media container (1), and at least one valve element (3, 3a, 3b), connectable to the valve connection element (2), wherein the media container (1) has a collar (4), which is moulded on in one piece and protrudes from the media container (1) and has a collar outer wall (5) and a collar inner wall (6). A restoring element (11, 11a, 11b) is arranged in such a way that, during the fitting of the valve element (3, 3a), the collar (4) and the restoring element (11, 11a, 11b) are jointly pressed between a partial region (9a) of the wall (9) and the pressing portion (10), wherein the restoring element (11, 11a, 11b) is formed from a crosslinked plastics material, preferably from crosslinked polyethylene, and wherein the pressing portion (10), the collar (4) and the restoring element (11, 11a, 11b) are made to match one another and formed in such a way that the joint pressing of the collar (4) and the restoring element (11, 11a, 11b) has the effect that an elastic deformation (X) of the restoring element (11, 11a, 11b) that is greater than the maximum creep deformation (Y) of the collar (4) over the service life of the device can be set, and so the creep deformation (Y) of the collar (4) can be compensated by way of the restoring element (11, 11a, 11b). The invention also relates to a fuel-energy conversion device, a motor vehicle and a method for fitting a device for the storage and delivery of liquid and/or gaseous media under pressure.
摘要:
The present disclosure is directed towards the design and arrangement of flow structures in electrochemical cells for use in high differential pressure operations. The flow structure on the low pressure-side (28) of the cell (20) has a larger surface area than the flow structure on the high-pressure side (22) of the cell (20) at the flow structure-MEA interface. The boundary of the high pressure flow structure is entirely within the boundary of the low pressure flow structure. A seal (25) around the high pressure flow structure is also contained within the boundary of the low pressure flow structure (28). In such an arrangement, high fluid pressures acting on the electrolyte membrane (40) from the high-pressure side (22) of the cell (20 is fully and continuously balanced by the flow structure on the low pressure-side (28) of the membrane (40), said low-pressure side flow structure (28) comprising a compacted porous metallic substrate. Use of the low pressure flow structure (28) as a membrane support prevents the rupture or deformation of the membrane under high stresses.
摘要:
A fuel cell stack assembly comprises a plurality of fuel cells in a stack, the stack defining two opposing parallel end faces. An end plate assembly is provided at each opposing end face of the stack. The end plate assemblies are coupled together to thereby maintain the fuel cells in the stack under compression. At least one of the end plate assemblies comprises: a master plate defining a master compression face having a first portion and a second portion; a first slave plate defining a first slave compression face; and a second slave plate defining a second slave compression face. The first slave compression face faces the first portion of the master compression face and when assembled, is in compressive relationship therewith, and the second slave compression face faces the second portion of the master compression face and when assembled, is also in compressive relationship therewith.