Provided is a hollow fiber membrane module that allows reducing pressure loss of a dry gas and a moist gas. A hollow fiber membrane module has: a hollow fiber membrane bundle; a case in which the hollow fiber membrane bundle is accommodated; a pair of sealing and fixing parts that fixes the hollow fiber membrane bundle to the case; intra-membrane channels; and extra-membrane channels. Moisture in the moist gas is supplied into the dry gas by virtue of the membrane separation effect of the hollow fiber membranes. A first channel is provided, which runs through the case from one end side to the other end side and through which part of the dry gas flows without passing through the intra-membrane channels.

A membrane filter configured to filter a liquid, the membrane filter including a base element including at least one membrane carrier that is externally flowable by the liquid and a gas; hollow fiber membranes respectively including lumen and attached at a top of the at least one membrane carrier wherein a liquid permeate is filterable from the liquid into the lumen; a one piece extruded circumferentially closed pipe that envelops the hollow fiber membranes; a gas inlet configured to let gas into a bottom of the membrane filter; at least one permeate collection cavity included in the base element and connected with the lumen and configured to collect the liquid permeate from the hollow fiber membranes; a permeate outlet included in the base element and configured to drain the liquid permeate from the at least one permeate collection cavity laterally from the base element.

An additive manufacturing system including a base assembly and a tray assembly. The base assembly includes a build window, substantially transparent to electromagnetic radiation; a projection system configured to project electromagnetic radiation toward an upper surface of the build window; and a tray seat arranged around a perimeter of the build window. The tray assembly is configured to engage with the base assembly in an engaged configuration and includes: a tray structure defining a registration feature configured to engage the tray seat to locate an aperture proximal to the upper surface of the build window in the engaged configuration; and a separation membrane that is configured to laminate across the upper surface of the build window in response to an evacuation of gas from an interstitial region and configured to separate from the build window in response to injection of gas into the interstitial region.

An additive manufacturing system including a base assembly and a tray assembly. The base assembly includes a build window, substantially transparent to electromagnetic radiation; a projection system configured to project electromagnetic radiation toward an upper surface of the build window; and a tray seat arranged around a perimeter of the build window. The tray assembly is configured to engage with the base assembly in an engaged configuration and includes: a tray structure defining a registration feature configured to engage the tray seat to locate an aperture proximal to the upper surface of the build window in the engaged configuration; and a separation membrane that is configured to laminate across the upper surface of the build window in response to an evacuation of gas from an interstitial region and configured to separate from the build window in response to injection of gas into the interstitial region.

Proposed are a gasket assembly and a fuel cell humidifier comprising the same which can be manufactured with improved productivity and can drastically reduce maintenance costs thereof. The gasket assembly according to an embodiment of the present disclosure is a gasket assembly for a fuel cell humidifier comprising a mid-casing, a cap fastened to the mid-casing, and at least one cartridge disposed in the mid-casing and receiving a plurality of hollow fiber membranes. The gasket assembly includes a packing part provided with a hole into which an end part of the cartridge is inserted, an edge part formed by being connected to the packing part, and a damping part formed on an outer peripheral surface of the cartridge.

An apparatus utilizes a membrane unit to capture components from atmospheric air, including oxygen and carbon dioxide, resulting in a permeate stream having an enriched concentration of oxygen and carbon dioxide. Alternatively, the membrane unit may be utilized to form a permeate stream having a permeate of enriched fast gas components. The permeate stream is thereafter directed to a permeate processing facility which may include a second stage of permeate enrichment, a flue gas generator, or a carbon dioxide sequestration facility for processing of an enriched stream of carbon dioxide. Among other carbon dioxide sequestration facilities, the carbon dioxide may be biologically sequestered by a facility of photosynthetic organisms, such as trees in an orchard, crops, or the like. The membrane unit may be shell-less and utilize a vacuum or positive pressure to facilitate the flow of fast gas components through a selective barrier of the membrane.