Abstract: Methods and systems are provided for an omnigravity compatible capillary condensing heat exchanger. A capillary condensing heat exchanger includes an inlet at a first end, a gas outlet at a second end, opposite the first end, a liquid outlet at the first end, and a conduit configured to direct flow of an airstream containing one or more of liquid droplets, humid air, or gas with a condensable vapor from the inlet to the gas outlet and direct liquid droplets out of the airstream and out of the liquid outlet, wherein the conduit comprises a chamber with a teardrop profile normal to a first axis, the conduit further having interior walls with cusp-like ribs oriented normal to the first axis, such that a vertex of the teardrop profile is axially aligned with the gas outlet along a second axis, parallel to the first axis.

Abstract: Methods and systems are provided for a multiphase separating device comprising a superhydrophobic filter composed of at least one passage from an inlet of the multiphase separating device to a second outlet of the multiphase separating device, with a first outlet approximately midway between the inlet and the second outlet and perpendicular thereto. The superhydrophobic filter is formed of a plurality of superhydrophobic disks which are superhydrophobic on both a first face and a second face such that capillary non-wetting (e.g., gas-wicking) forces are established when the plurality of superhydrophobic disks are stacked in face-sharing contact. In one example, the at least one passage is formed as helical through holes configured to generate centrifugal separating forces.

Abstract: Methods and systems are provided for a liquid capture device, comprising a superhydrophobic expansion chamber, a user interface coupled to a first end of the superhydrophobic expansion chamber; and a collapsible bag coupled to a second end of the superhydrophobic expansion chamber, opposite the first end. The liquid capture device may be used to capture urine in reduced gravity environments.

Abstract: Methods and systems are provided for a urine capture device, comprising a first user interface having a plurality of vent holes and a collapsible bag coupled to a second end of the first user interface, the collapsible bag configured with a superhydrophilic vane structure. The urine capture device may be optionally configured with a clip-in liquid self-propelling passage, including a second user interface and a superhydrophobic passage. The first user interface may be configured for use by male users and the second user interface may be configured for use by female users, thus making the urine capture device a unisex-enabled device.

Abstract: A system and method for removing one or more predetermined gases from an environment is herein disclosed. An embodiment of the system and method will now be described. A means for conveying a fluid and a means for flowing the fluid is combined with adsorber and desorber sections. The fluid flows in the means for conveying the fluid by the means for flowing the fluid. Comparably, the fluid flows in the adsorber and desorber sections not by the means for flowing the fluid, but rather by capillary action. In the adsorber section, the environment is in direct contact with the fluid. The fluid is capable for adsorbing one or more gases from the environment. The fluid exits the adsorber section and subsequently flows into the desorber section. The desorber section is self-contained wherein an inner portion of the desorber section is not in direct contact with the environment. In the desorber section, the one or more gases are desorbed from the fluid into the inner portion of the desorber section.