The solar desalination system is a hybrid system combining a Fresnel solar concentrator with a desalination chamber, and which uses membrane distillation for desalination of seawater. The desalination chamber includes a lower wall having a central absorber base, at least one sidewall, and an upper wall. A pair of hydrophobic membranes are mounted within the desalination chamber such that a central chamber is defined therebetween above the absorber base. The desalination chamber is suspended above a linear Fresnel reflector array so that the absorber base is positioned at a focal line thereof. Seawater is fed into the central chamber, where it is heated to produce water vapor, which passes through the pair of hydrophobic membranes into a pair of condensate retrieval chambers. The water vapor cools in the pair of condensate retrieval chambers, and may then be removed in the form of pure water.

The invention relates to a filter device for the exchange of substances, comprising a pipe section-shaped housing with a center of gravity and with two housing ends, in which housing a hollow fiber bundle consisting of semi-permeable membranes is arranged, comprising, furthermore, an end cap having a first and second opening, wherein the housing and the end cap configure a first sealing surface which connects the housing and the end cap sealingly, and wherein the first sealing surface is spaced apart further from the center of gravity of the housing than the aperture, and wherein a first fluid chamber is formed between the first sealing surface and the first opening of the end cap, via which first fluid chamber the first opening is connected to the first flow chamber, wherein the housing and the one end cap configure a second sealing surface, wherein the first and second sealing surface are not configured by way of a sealant.

Provided are a hollow fiber membrane module and a dehumidification/humidification device which allow an improved contribution ratio of hollow fiber membranes to a membrane separation function and improved dehumidification/humidification performance to be achieved. An outer case 100 is provided with a double tube portion 120 forming an annular space K radially externally of an annular gap S on one end side, with a communication portion 121 providing communication between the annular gap S and the one end side of the annular space K, and with an outlet portion 122 providing communication between the annular space K and the outside of the outer case 100, while an inner case 200 is provided with a hollow region which is open on the other end side and with a plurality of windows 221 providing communication between the hollow region and the annular gap S.

A hollow fiber membrane module includes an inner case 120 with a one-end-side outer peripheral surface 121, the width of which is constant from one end side toward the other end side, and an other-end-side outer peripheral surface 122 which gradually widens from one end side toward the other end side, and in the inner case 120, a hollow portion that opens to the other end side is provided on an inside of the other-end-side outer peripheral surface 122 and a plurality of windows 122a that allow communication between the hollow portion and the annular gap are provided, and in the outer case 110, a communication hole 111a that communicates between the annular gap and the outside of the outer case 110 is provided at a position that is closer to the one end side.

Provided is a filter module for a gravity-type water purifier. The filter module for a gravity-type water purifier according to an exemplary embodiment of the present invention includes: a plurality of filter members which are plate shaped, and which are fixed to each other via one or more fastening bars while arranged spaced apart from each other in parallel having gaps therebetween; and a common water collecting member coupled to the respective water collecting holes formed in the filter members, and in which filtered water produced from the filter members is collected.

A process for producing nitrogen-rich air by feeding high temperature air at 150 C. or more to an air separation membrane module is described. After being placed at 175 C. for two hours, the air separation module exhibits a shape-retention ratio of 95% or more in one embodiment. The nitrogen-rich air can be fed to a fuel tank for an aircraft, for example.

Embodiments relate generally to a filter (110), for example, for attachment onto a gas detector device or a gas sensor, and attempt to improve the efficiency and service life of the filter (110). Embodiments typically comprise a dustproof membrane (114) and a waterproof membrane (113). Some embodiments may also comprise a splash-proof cap (130) and/or features to reduce negative pressure on the filter (110).

A process for producing nitrogen-rich air by feeding high temperature air at 150 C. or more to an air separation membrane module is described. After being placed at 175 C. for two hours, the air separation module exhibits a shape-retention ratio of 95% or more in one embodiment. The nitrogen-rich air can be fed to a fuel tank for an aircraft, for example.

A sheet-shaped hollow fiber membrane module includes a casing having a flat shape, the casing including a supply port and a discharge port, and a plurality of hollow fiber membranes accommodated inside the casing. The casing includes a plurality of the supply ports on one main surface of the casing and a plurality of the discharge ports on the other main surface of the casing, at least one of the plurality of the supply ports is closable, and at least one of the plurality of the discharge ports is closable. Each of the plurality of hollow fiber membranes includes a first opening at one end of the hollow fiber membrane and a second opening at the other end of the hollow fiber membrane, and the first opening and the second opening communicate with an outside of the casing and do not communicate with an inside of the casing.

A mobile power generation/water purification system includes, in a housing thereof: a photovoltaic power generation device; a battery that stores electricity generated by the photovoltaic power generation device; a control unit that receives electric power from the battery; and a drive means controlled by the control unit and using the battery as an electric power source. A water purification device is disposed inside the housing in a single flow path connectable to a suction hose and an outflow hose. The drive means of the water purification device is a plurality of drive pumps which are electrically connected to the battery by respective conductive cables. The photovoltaic power generation device is a solar panel wound around a rotation shaft inside the housing. The solar panel can be pulled out directly in a horizontal direction from a horizontally elongated cutout window of the housing.