An atmospheric aerosol coalescer (AAC) is a device for collecting water from cooling tower plumes, fog. The AAC may include tapered spiral tube body with a helix shaped skin for atmospheric aerosol to pass through. Micro-droplets of water in air, as in cooling tower plumes, fog, separate inside the AAC due to large density difference and centrifugal forces inside the spiral tube. 3-100-micron diameter water micro-droplets may grow to 1000-4000 micron drops by coalescence on the internal walls of the AAC. Big drops detach to a drain at its base and fall through a spout to a collection pond. A number of AAC arrays may be supported by a net or an inflated pad. The net or inflated pad may be lifted by a tethered aerostat.

Provided are an air permeable vent filter, and a headlight assembly comprising the same. The air permeable vent filter has a body in which a nanofiber web, which comprises a plurality of pores and is formed by accumulating a nanofiber electrospun from a spinning solution in which a polymer material and a solvent are mixed, is spirally wound, and the air permeable vent filter implements an air permeable filter function of allowing air to pass through from one lateral side of the body to the other lateral side and blocking liquids and solids.

The oil air separator system is designed to stop oil contaminated air from entering the intake manifold. All engines have a vacuum hose from the valve cover or valley pan connected to the intake manifold. The device serves to evacuate blow by from the engine. The contaminated air (with oil vapors) is effectively removed. This prevents oil deposits from being realized inside the intake manifold and on the spark plugs. By removing the dirty air, the engine can breathe clean air. The container can hold the oil and water while the filter inside keeps the air clean reducing pollution.

The present invention relates to a filter unit for filtering a compressed gas contaminated with oil, in particular compressed air, wherein the filter unit contains a coalescence filter for coalescing the contaminant contained in the compressed gas, in particular oil. The coalescence filter comprises a housing with a gas supply for supplying the gas to a primary coalescence medium disposed in the housing, the gas flowing in a flow direction, wherein the primary coalescence medium contains at least one first layer of a first porous coalescence medium and a second layer of a second porous coalescence medium adjacent to the first layer, wherein the primary coalescence medium has a total thickness of at least 3.5 mm, measured at a pressure of 2 N/cm.sup.2.

Disclosed is an arrangement of a filtering element for a device for purifying gas from the crankcase of an internal combustion engine, which includes: a filtering element mounted so as to rotate about an axis and having an annular filtering medium; a rotor element capable of being part of a rotating system, making it possible to turn the filtering element by way of notches formed on the outer surface of a sleeve. The flanges of the filtering element are attached to one another in an inner space defined by the medium, typically by snap-fitting, using at least one retaining member and an anchor portion engaging with one another with an anti-rotation effect. The anchoring portion is provided with inner projections forming contact surfaces, preferably angular, which are inserted into the notches of the sleeve when the rotor element is inserted into the inner space.

Disclosed are: a separation element (20) of a liquid separator (10) for the separation of liquid from an aerosol; a separation medium (38); a liquid separator (10); and a method for producing a separation element. The separation element (20) has at least one separation medium (38) for separating at least the liquid, the separation medium being arranged circumferentially about an element axis (22) in at least one medium layer (40). The aerosol is able to flow through the separation element (20) radially relative to the element axis (22). At least one medium layer (40) has, on a radially inward circumferential surface, at least one channel-shaped indentation (42) extending axially to the element axis (22) to realize at least one channel (44) for separated liquid.

An ambient air purification device for a road vehicle for removing dust, particulate matter, and/or gases from ambient air has one or more filter elements. The ambient air purification device is attachable in an external region to a vehicle rear of the road vehicle by a releasable coupling. The ambient air purification device has at least one mating coupling of the releasable coupling, wherein the at least one mating coupling is coupled to a vehicle-side coupling component of the releasable coupling. A road vehicle provided with such an ambient air purification device is provided.

An environmental air cleaning device for a road vehicle removes dust, particulate matter, and/or gases from environmental air. The environmental air cleaning device has one or more filter elements. The environmental air cleaning device is provided with a mounting device that rigidly couples to a vehicle-side mounting device for roof loads. A road vehicle with such an environmental air cleaning device is provided.

A rotating coalescer having an ejected coalesced liquid separating device is described. The separating device prevents re-entrainment of liquid into a stream of filtered gas. The rotating coalescer includes a rotating filter element or coalescing cone stack positioned within a rotating coalescer housing. The outer surface of the rotating filter element or the outlet of the coalescing cone stack is displaced from the inner surface of the rotating coalescer housing. The gap between the rotating filter element or the coalescing cone stack and the rotating coalescer housing allows for ejected coalesced liquid, such as oil, to accumulate on the inner surface of the rotating coalescer housing for drainage and allows for filtered gas, such as air, to exit through a clean gas outlet of the rotating coalescer housing.

The present invention relates to a system for treating gaseous hydrogen, comprising an inlet (10a) for supplying gaseous hydrogen, a drying unit (30) with an active drying material for removing moisture from the supplied hydrogen, an adsorption unit (50) with an active adsorption material for adsorbing impurities from the dried hydrogen, and an outlet (10b) for drawing off treated hydrogen. According to the invention, the mass ratio between the active drying material and the active adsorption material is in the range of 1.5:1 to 50:1. The invention further relates to a plant comprising such a system for providing compressed treated gaseous hydrogen and a method for treating gaseous hydrogen.