A heating/cooling system for furnishing employs an electrochemical heat transfer device. An electrochemical heat transfer device may be an electrochemical hydrogen compressor that pumps hydrogen into and out of a tank having a metal hydride forming alloy therein. The absorption of hydrogen by the metal hydride forming alloy is exothermic, produces heat, and the desorption of the hydrogen from the metal hydride forming alloy is endothermic and draws heat in. An electrochemical hydrogen compressor may be configured between to tanks and pump hydrogen back and forth to form a heat transfer device. A heat exchange device may be coupled with the tank or may comprise the outer surface of the tank to transfer heat to an object or to the surroundings. A closed loop may be configured having two tanks and one or two electrochemical hydrogen compressors to pump the hydrogen in a loop around the system.

A pulse jet system and method is disclosed. In an example, the pulse jet system includes a combustion chamber, intake ports to deliver combustion agents to the combustion chamber, an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber, and an exhaust to exit the cooled gas from the expansion chamber. In another example, the pulse jet system includes a combustion chamber with intake ports to deliver combustion agents to the combustion chamber, wherein the combustion chamber is part of a four cycle engine. The pulse jet system also includes an expansion chamber to cool a combustion product following combustion of the combustion agents in the combustion chamber.

Hydrogen energy systems for obtaining hydrogen gas from a solid storage medium using controlled laser beams. Also disclosed are systems for charging/recharging magnesium with hydrogen to obtain magnesium hydride. Other relatively safe systems assisting storage, transport and use (as in vehicles) of such solid storage mediums are disclosed.

A reactor includes a reaction-side flow passage through which a reaction fluid being a fluid constituting a reaction object flows; a temperature controller (heat-medium side flow passage) configured to heat or cool the reaction fluid from outside the reaction-side flow passage; and a catalyst configured to promote a reaction of the reaction fluid, the catalyst provided in the reaction-side flow passage so that a contact area with the reaction fluid is larger on a downstream side than on an upstream side in the reaction-side flow passage.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

Hydrogen energy systems for obtaining hydrogen gas from a solid storage medium using controlled photon and phonon sources. Additionally, structures of solid storage mediums, enhancements to interactions in the medium with photons and phonons, and manufacturing methods of the mediums are disclosed. Also disclosed are systems for charging/recharging magnesium with hydrogen to obtain magnesium hydride. Other relatively safe systems assisting storage, transport and use (as in vehicles) of such solid storage mediums are disclosed.

Hydrogen energy systems for obtaining hydrogen gas from a solid storage medium using controlled lasers. Also disclosed are systems for charging/recharging magnesium with hydrogen to obtain magnesium hydride. Other relatively safe systems assisting storage, transport and use (as in vehicles) of such solid storage mediums are disclosed.

An electrochemical device includes: an electrolyte membrane; an anode disposed on a first main surface of the electrolyte membrane; a cathode disposed on a second main surface of the electrolyte membrane; an anode separator disposed on the anode; and a cathode separator disposed on the cathode and including a first conductive layer on a surface adjacent to the cathode. The cathode includes a cathode gas diffusion layer. The cathode separator has a recess for storing the cathode gas diffusion layer. The first conductive layer is disposed only on a bottom surface of the recess.

Proposed are a naphthalene-based hydrogen storage material including a naphthalene group, the naphthalene-based hydrogen storage material being capable of being used as a hydrogen storage media for supplying hydrogen to a device using hydrogen such as a fuel cell and a hydrogen combustion device, and to a method of storing and releasing hydrogen using the same. The hydrogen storage material can exhibit a significantly high hydrogen capacity, and can have excellent cost competitiveness with the use of a low-cost organic compound which is commercially available in the art.

The invention relates to an improved process for preparing metal-organic framework materials, metal-organic frameworks obtainable by such processes, methods using the same, and the use thereof. The process of the invention provides an improved process for preparing metal-organic frameworks in particular monocrystalline metal-organic frameworks having large crystal sizes. The invention also relates to metal organic frameworks comprising iron or titanium, and their uses.