An ambient humidity control article for controlling the ambient humidity within 65%-75%. The article includes a substrate which has a predetermined water absorbability, and a humidity control layer coated on the substrate. The humidity control layer is made up of a humidity control composition. The amount of the composition coated on per cubic centimeter of the substrate is 0.54-0.74 grams. The composition includes at least one chloride salt and water. The chloride salt includes at least one of NaCl, NH.sub.4Cl, KCl and MgCl.sub.2. The weight percentage of the chloride salt is 18%-44.6%. The water absorption amount of the substrate is not less than 0.5 grams per cubic centimeter. The article can control the ambient humidity without the need to pre-adjust the objective space. The article has a large capacity of moisture absorption and desorption and can quickly achieve the desired humidity in the objective environment.

An internal air adjustment device (30) includes an internal-side passage (70) and an internal-side treatment unit (152). The internal-side separator (61) in the internal-side passage (70) separates return air from internal air. The composition of the return air differs from the composition of the internal air. The internal-side passage (70) supplies the return air into a storage (1). The internal-side treatment unit (152) decomposes ethylene in air that flows in the internal-side passage (70). Therefore, the concentration of ethylene of the return air is lower than the concentration of ethylene of the internal air.

The invention generally relates to a process for purifying a hydrogen gas for use in a fuel cell. The process involves taking a hydrogen feed stream from a high-pressure tank and passing it through a purifier comprising an adsorbent to provide a purified hydrogen stream which is sent to a fuel cell. A particular adsorbent which can be used is a metal-organic framework composition. The adsorbent can be housed in a device such as a canister or cartridge having an inlet and outlet port.

Slurries and methods of making slurries for modifying and extending relative humidity control ranges. The slurries may include a saturated aqueous salt and one or more other reagents selected to provide a controlled modifiable narrow range of relative humidity. The saturated aqueous salt may be one or more of sodium chloride, potassium chloride, potassium citrate, sodium formate, and/or magnesium chloride, and the one or more other reagents may be one or more of a lactate salt, glycerol, and/or an acetate salt, for example.

Electronic device processing assemblies including an EFEM with at least one side storage pod attached thereto. The side storage pod has a side storage pod container. A supply conduit extends between an upper plenum of the EFEM to the side storage pod container. A fan causes purge gas to simultaneously flow into the EFEM chamber and into the side storage pod container. The fan also causes recirculation of the purge gas from the EFEM chamber. Methods of operating EFEMs and EFEMs are also disclosed.

The disclosure relates to an activated carbon scrubber apparatus 300 and a method of its operation for carbon dioxide (CO.sub.2) removal from a controlled environment. The scrubber apparatus is configured to switch between: an adsorption configuration in which it is configured to provide CO.sub.2-rich gas from the controlled environment to a sorbent bed 302 comprising activated carbon for CO.sub.2 adsorption, and to return the treated gas to the controlled environment; and a regeneration configuration in which it is configured to provide a regenerating gas from outside of the controlled environment to the sorbent bed to desorb CO.sub.2 and regenerate the activated carbon, and to discharge CO.sub.2-rich gas outside of the controlled environment. The method comprises alternately operating the scrubber apparatus in the adsorption configuration and the regeneration configuration over a plurality of cycles, wherein the scrubber apparatus is operated at a cycle frequency of between 4 and 30 cycles per hour. A heater 303 is controlled to heat the sorbent bed in the regeneration configuration.

The disclosed embodiments relate to the design of a preconcentrator system for preconcentrating air samples. This preconcentrator system includes a plurality of preconcentrators that preconcentrate the air samples prior to chemical analysis, and a delivery structure comprising a manifold that selectively routes a sample airflow to the plurality of concentrators so that the plurality of preconcentrators receive a sample airflow concurrently or individually.

A liquefied gas system for capturing boil-off gas and reversibly adsorbing the boil-off gas on an adsorbent for later desorption and use comprises a first vessel for storing liquefied gas; a means for delivering gas from the first vessel to a system endpoint; a second vessel for storing boil-off gas emitted from the first vessel, the second vessel containing at least one adsorbent; a means for delivering boil-off gas from the first vessel to the second vessel, whereby the boil-off gas is reversibly stored on the at least one adsorbent; and a means for delivering the stored boil-off gas from the second vessel to the system endpoint. Also disclosed is a method of capturing boil-off gas from a liquefied gas system, wherein the captured boil-off gas is captured on an adsorbent for further use in the system. In one embodiment of the system and the method, the liquefied gas is liquid hydrogen, and the captured boil-off gas is used to power a hydrogen fuel cell.

The invention relates to a tubular filter that absorbs ethylene or other gases for refrigerated transport containers, formed by a cylindrical tube of plastic mesh (2) with hermetic caps (3) at both ends, which contains granules that absorb ethylene or other gases, the mesh (2) having a structural configuration formed by an inner crown (20) having a circular filament (201), and an outer crown (21) having a wing-shaped filament (211), the base thereof being wider than the distal end thereof, thereby facilitating the entry of air flow into the tube. It further comprises a support accessory (4) fixed in the container for which the filter (1) is intended, and it has an aerodynamic shape that helps to increase air flow through the filter (1) and liquid collection means.

A device that retains high moisture capacity in the presence of certain contaminants. The device can include a substrate and a desiccant. The device can be configured in relation to an enclosure such that the device absorbs and desorbs moisture from the enclosure.