B22D 21/00 - Coulée de métaux non ferreux ou de composés métalliques, dans la mesure où leurs propriétés métallurgiques affectent le procédé de couléeUtilisation de compositions appropriées
C01B 3/00 - HydrogèneMélanges gazeux contenant de l'hydrogèneSéparation de l'hydrogène à partir de mélanges en contenantPurification de l'hydrogène
A system for discharging hydrogen from two or more hydrogen storage vessels (1A, 1B, 1C) containing solid hydrogen storage material. The system includes at least one hydrogen supply line for connecting the hydrogen storage vessels to a hydrogen demand (3), and energy delivery system (6A, 6B, 6C) to provide heat to the hydrogen storage material in each hydrogen storage vessel to desorb hydrogen from the solid hydrogen storage material, and one or more supply connection conduits (4A, 4B, 4C) for connecting the supply line of lines to the hydrogen storage vessels (1A, 1B, 1C). Each supply connection conduit has a backflow prevention device (5A, 5B, 5C) to prevent hydrogen in the supply line from flowing back into the hydrogen storage vessels (1A, 1B, 1C). Also disclosed is a system for delivering a supply of hydrogen to a hydrogen supply line including a control system (7) to determine the timing of activation of an energy delivery system based (6A, 6B, 6C) on the hydrogen demand in the hydrogen supply line. The control system (7) activates the energy delivery system (6A, 6B, 6C) in the next hydrogen storage unit to provide a sufficient period of time for the material in the next hydrogen storage vessel to heat to the temperature at which hydrogen is provided at the supply pressure for the hydrogen supply line.
F17C 11/00 - Utilisation de solvants ou d'absorbants des gaz dans les récipients
F17C 7/00 - Procédés ou appareils pour vider les gaz liquéfiés, solidifiés ou comprimés contenus dans des récipients sous pression, non couverts par une autre sous-classe
A range of alloys of Mg and at least one of Cu, Si, Ni and Na alloys that is particularly suitable for hydrogen storage applications. The alloys of the invention are formed into binary and ternary systems. The alloys are essentially hypoeutectic with respect to their Cu and Ni contents, where one or both of these elements are present, but range from hypoeutectic through to hypereutectic with respect to their Si content when that element is also present. The terms hypoeutectic and hypereutectic do not apply to Na if it is added to the alloy. The alloy compositions disclosed provide high performance alloys with regard to their hydrogen storage and kinetic characteristics. They are also able to be formed using conventional casting techniques which are far cheaper and more amenable to commercial use than the alternative ball-milling and rapid solidification techniques which are much more expensive and complex. Each of the individual binary Mg-E systems, where E = Cu, Ni or Si, forms a eutectic comprising of Mg metal and a corresponding MgxEy intermetallic phase.
A Mg-based alloy consisting essentially of: a Mg-X alloy normally having a primary crystallized Mg phase, except in the case of Si added at hypereutectic amounts which has a primary crystallized Mg2Si phase; an amount of X such that the Mg-X alloy is hypoeutectic with respect to X, where X is an element that forms a eutectic with Mg selected from the group consisting of Al, Ag, Au, Ba, Bi, Ca, Ce, Cu, Eu, Ga, Gd, Ge, Hg, La, Pb, Sb, Sm, Sn, Sr, Th, Tl, Y, Yb and Zn; more preferably from the group of Al, Bi, Ca, Ce, Cu, La, Sb, Sn, Sr and Zn; most preferably from the group of Al, Ca, Cu and Zn; or an amount of X such that the Mg-X alloy is either hypoeutectic, eutectic or hypereutectic with respect to X, where X is Si; greater than zero and up to 2 mass% Na as a performance enhancing element; incidental impurities up to 0.5 mass%, and the balance Mg.
A hydrogen storage vessel (20, 30) comprising an internal volume (21, 31) and an outer shell (32, 32) having an interior wall confining the internal volume (21, 31) containing a hydrogen storage material. The hydrogen storage vessel further comprises a plurality of internal cooling channels (23, 24, 25, 26, 33, 34, 35, 36) communicating with a source of heat transfer medium. The internal cooling channels comprising first internal channels (23, 33) and second internal channels (24, 34, 25, 35, 26, 36) whereby the first internal channels (23, 33) are closer to the outer shell than the second internal channels. A method of absorbing hydrogen is also disclosed including the steps of subjecting the hydrogen storage material to temperature and pressure conditions to initiate hydrogen absorption while supplying hydrogen to the storage vessel; and cooling the hydrogen storage material in proximity to the interior wall to create a lower density of hydrogen storage material in the region in proximity to the interior wall of the internal volume.
A method of filling a hydrogen storage vessel (10) with a hydrogen storage material, the hydrogen storage vessel (10) comprising an internal volume (11) having at least a first region, at least a second region and an outer shell, the internal volume containing a hydrogen storage material; the method including the steps of filling the first region of the internal volume in proximity to the inner surface of the outer shell with hydrogen storage material which has a lower density than hydrogen storage material within the internal volume in at least a second region which is positioned closer to the centre of the internal volume than the first region.
A solid state hydrogen storage and/or supply vessel comprising: a cylindrical shell portion having a first end and a second end, the first end and the second end defining an axis therebetween, the cylindrical shell having at least one inner compartment for a solid state hydrogen storage material; a fluid communication port for transmission of hydrogen gas to the at least one compartment; a heating element for heating the hydrogen storage material to desorb hydrogen from the hydrogen storage material; a temperature control system for monitoring temperature at locations corresponding to at least a first axial point and a second axial point and to provide a temperature profile along the axis; a heating apparatus for heating the solid state hydrogen storage material and being responsive to the temperature control system to maintain the temperature profile within a set temperature range.
F17C 13/02 - Adaptations spéciales des dispositifs indicateurs, de mesure ou de contrôle
F17C 1/12 - Récipients sous pression, p. ex. bouteilles de gaz, réservoirs de gaz, cartouches échangeables avec des moyens pour assurer une isolation thermique
F17C 3/02 - Récipients non sous pression assurant une isolation thermique
A system for discharging hydrogen from two or more hydrogen storage vessels (1A, 1B, 1C) containing solid hydrogen storage material. The system includes at least one hydrogen supply line for connecting the hydrogen storage vessels to a hydrogen demand (3), an energy delivery system (6A, 6B, 6C) to provide heat to the hydrogen storage material in each hydrogen storage vessel to desorb hydrogen from the solid hydrogen storage material, and one or more supply connection conduits (4A, 4B, 4C) for connecting the supply line or lines to the hydrogen storage vessels (1A, 1B, 1C). Each supply connection conduit has a backflow prevention device (5A, 5B, 5C) to prevent hydrogen in the supply line from flowing back into the hydrogen storage vessels (1A, 1B, 1C). Also disclosed is a system for delivering a supply of hydrogen to a hydrogen supply line including a control system (7) to determine the timing of activation of an energy delivery system based (6A, 6B, 6C) on the hydrogen demand in the hydrogen supply line. The control system (7) activates the energy delivery system (6A, 6B, 6C) in the next hydrogen storage unit to provide a sufficient period of time for the material in the next hydrogen storage vessel to heat to the temperature at which hydrogen is provided at the supply pressure for the hydrogen supply line.
A hydrogen vessel comprising a fluid communication port, an outer vessel and an inner compartment. The inner vessel contains a hydrogen storage material, such as a metal hydride. In one embodiment the inner vessel is mechanically isolated from the outer vessel. The separation between the outer and inner vessel provides a peripheral volume between each vessel. The peripheral volume about the inner compartment may be fluidly isolated from the inner compartment. The hydrogen storage unit further includes a fluid pressure device in communication with the peripheral volume; and a controller for controlling the fluid pressure device during desorption and absorption.
A system for discharging hydrogen from two or more hydrogen storage vessels (1A, 1B, 1C) containing solid hydrogen storage material. The system includes at least one hydrogen supply line for connecting the hydrogen storage vessels to a hydrogen demand (3), an energy delivery system (6A, 6B, 6C) to provide heat to the hydrogen storage material in each hydrogen storage vessel to desorb hydrogen from the solid hydrogen storage material, and one or more supply connection conduits (4A, 4B, 4C) for connecting the supply line or lines to the hydrogen storage vessels (1A, 1B, 1C). Each supply connection conduit has a backflow prevention device (5A, 5B, 5C) to prevent hydrogen in the supply line from flowing back into the hydrogen storage vessels (1A, 1B, 1C). Also disclosed is a system for delivering a supply of hydrogen to a hydrogen supply line including a control system (7) to determine the timing of activation of an energy delivery system based (6A, 6B, 6C) on the hydrogen demand in the hydrogen supply line. The control system (7) activates the energy delivery system (6A, 6B, 6C) in the next hydrogen storage unit to provide a sufficient period of time for the material in the next hydrogen storage vessel to heat to the temperature at which hydrogen is provided at the supply pressure for the hydrogen supply line.
F17C 7/00 - Procédés ou appareils pour vider les gaz liquéfiés, solidifiés ou comprimés contenus dans des récipients sous pression, non couverts par une autre sous-classe
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