A heat generating device includes: a sealed container; a tubular body provided in a hollow portion of the sealed container; a heat generating element provided on an outer surface of the tubular body and configured to generate heat by occluding and discharging hydrogen supplied to the hollow portion; and a flow path formed by an inner surface of the tubular body and through which configured to allow a fluid that exchanges heat with the heat generating element to flow. The heat generating element includes a base made of a hydrogen storage metal, and a multilayer film provided on the base. The multilayer film has a first layer made of a hydrogen storage metal and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal, which is different from that of the first layer, and having a thickness of less than 1000 nm.

A solid state hydrogen storage device includes: a solid state hydrogen storage material in which hydrogen is stored; a heat exchanger in a plate shape that is inserted into the solid state hydrogen storage material and exchanges heat with the solid state hydrogen storage material through contact with the solid state hydrogen storage material; a storage container in which the solid state hydrogen storage material and the heat exchanger are accommodated; and a cap connected to an upper portion of the storage container and configured to seal the interior of the storage container.

The invention relates to a hydrogen compressor with metal hydride comprising: a pressure chamber, comprising an inner space, defined by a first inner surface; a shell with a thickness E, the shell comprising a first outer surface facing the first inner surface, the shell comprising an insulating material with first thermal conductivity; and a hydrogen storage element, contained in the shell, comprising a storage material suitable for storing or releasing hydrogen as a function of a temperature that is imposed on same, and having a second thermal conductivity higher than the first thermal conductivity.

A storage system for storing solid hydrogen includes: a plurality of storages including two or more types of solid hydrogen storage materials having different magnetic intensities; a storage container configured to accommodate the storages; and a coil disposed inside the storage container and configured to apply a variable magnetic field to the storages accommodated in the storage container.

The invention relates to a hydrogen compressor (10) with metal hydride comprising: a pressure chamber (20), comprising an inner space, defined by a first inner surface (21); a shell (70) with a thickness E, the shell (70) comprising a first outer surface (71) facing the first inner surface (21), the shell (70) comprising an insulating material with first thermal conductivity; and a hydrogen storage element (50), contained in the shell (70), comprising a storage material suitable for storing or releasing hydrogen as a function of a temperature that is imposed on same, and having a second thermal conductivity higher than the first thermal conductivity.

The present disclosure relates to a composition that includes a solid core having an outer surface and a coating layer, where the coating layer covers at least a portion of the outer surface, the coating layer is permeable to hydrogen (H.sub.2), and the solid core is capable of reversibly absorbing and desorbing hydrogen.

The present invention relates to a multi tubular metal hydride reactor with integrated buffer storage. The present invention more particularly relates to metal hydride reactor with integrated buffer storage configuration with 7 tubes with metal hydride and 4 longitudinal fines attached to 5 concentric rings, the metal hydride tubes are supported by means of 4 baffles, having a total 50 kg LaNis distributed equally among the tubes and water as heat transfer fluid flows across the shell for heat transfer. The metal hydride reversibly stores 680 grams of hydrogen amounting to 1.34 wt. % of gravimetric capacity of metal hydride and equivalent energy storage of 10.4 MJ. In case of absorption, when the flow rate selected was 20 LPM the absorption time for 90% reaction completion was observed to be 1286 s (21.4 min) at 30 bar H.sub.2 supply pressure. In case of desorption studies, it was observed that the varying flow rate from 15 to 25 LPM has negligible effect on hydrogen desorption hence 15 LPM was selected as a flow rate for further desorption experiments. Further increasing HTF temperature from 60? ? C. to 80? C. improves the performance significantly.

A storage system for storing solid hydrogen includes: a plurality of storages including two or more types of solid hydrogen storage materials having different magnetic intensities; a storage container configured to accommodate the storages; and a coil disposed inside the storage container and configured to apply a variable magnetic field to the storages accommodated in the storage container.

The present disclosure relates to a composition that includes a solid core having an outer surface and a coating layer, where the coating layer covers at least a portion of the outer surface, the coating layer is permeable to hydrogen (H.sub.2), and the solid core is capable of reversibly absorbing and desorbing hydrogen.

Gas compression system having a compressor for compressing hydrogen, a recovery device(s) for recovering hydrogen escaping as leakage gas during compression, and a leakage gas return line to return recovered leakage gas into a stage in the gas compression system upstream of the compressor and/or into a suction line of a compressor stage of the compressor. The compressor has a leakage gas discharge line for discharging leakage gas. Each recovery device is fluidically connectable to the discharge and return lines and has a metal hydride reservoir(s) heat-coupled to a respective heat exchanger. Each hydride reservoir has a hydride-forming metal alloy(s) which, when heat is supplied or dissipated through the respective heat exchanger, provides cyclic de- or absorption of leakage gas. Each recovery device increases leakage gas pressure in the discharge line to at least the pressure in the upstream stage and/or the suction pressure in the suction line.