This disclosure includes systems and methods for extracting water vapor from atmospheric air and, more particularly, but not by way of limitation, systems and methods for optimizing liquid water production from air, in some instances, taking into account diurnal variations. The systems comprise an adsorption zone an a desorption zone, an actuator to move a desiccant between the adsorption zone and the desorption zone. The liquid water production is optimized based, at least in part, on measurements of one or more of: an ambient air temperature, ambient air relative humidity, and a level of solar insolation.

A gas purification processing apparatus is described. The gas purification processing apparatus can control the generation of adsorption heat by an adsorbate substance in purification processing and thereby prevent desorption or ignition or the like of the adsorbate component by performing cooling processing on an adsorbent itself when needed. This advantageously ensures high adsorption efficiency with a simple and convenient configuration. During operation of the apparatus, gas is supplied from the source and purified by a purification part and then discharged as a purified gas. When the temperature of the purification part exceeds a predetermined temperature, a cooling medium is supplied from the cooling processing part to cool the purification part.

Road traffic volume information is acquired, and CO.sub.2 recovery devices 30, 30a for recovering CO.sub.2 exhausted into the air from vehicles on a road and drifting around the road are installed. Activation of the CO.sub.2 recovery devices 30, 30a is controlled based on the road traffic volume information.

A method for controlling two contaminants in a gas stream, comprising a system with two adsorption vessels, and analyzers for determining the concentration of the two contaminants is provided. The method includes purifying a gas stream with a first vessel placed in an adsorption mode and placing a second vessel in a standby mode. Then opening a second purge valve on the second vessel if the concentration of either contaminant is equal to or greater than predetermined threshold levels, thereby allowing a first portion of the purified gas exiting the first vessel to flow through the second vessel and exiting through the second purge valve. Then closing the second purge valve after a predetermined period of time when the concentration of both contaminants are less than or equal to a predetermined threshold level. Then switching the vessels and repeating the process.

The invention relates to a system composed of an apparatus to treat a fluid and a handheld device, wherein the apparatus has a communication unit with a radio antenna and the handheld device has a communication unit with a radio antenna and both communication units can exchange data with each other by means of radio communication, and the apparatus has a control unit, which can detect at least one status parameter of the apparatus and generate a signal which is dependent on the status parameter and can transfer it via the communication unit of the apparatus to the communication unit of the handheld device.

In a method and a device for compressed air preparation in motor vehicles, ambient air is drawn in and compressed by a compressor (2), dried in a downstream air dryer (4, 4′) and delivered to compressed air consumers (storage tanks 14, 16). The air dryer (4, 4′) is regenerated with system air stored in a regeneration reservoir (30, 30′), passed via the air dryer (4, 4′) and vented via an associated vent valve (22). In predetermined operating states, a switch is made between a delivery phase and a regeneration phase via an electrically controlled governor (36, 36′). The delivery phase of the compressor takes place at least when compressed air consumption is high, and the regeneration phase takes place in the stationary mode at the idling speed of the drive motor, to keep the delivery phases short and to have sufficient time available for regeneration.

A rotary sorption bed system includes a rotating sorbent mass of a regenerable sorbent material, in which in a cycle of operation, a given volume of the sorbent mass sequentially passes through first, second, third, and fourth zones, before returning to the first zone. A process fluid stream is directed through the first zone, a regeneration fluid stream is directed through the third zone, and a recycled fluid stream recirculates in a closed loop independent of the process fluid stream and the regeneration fluid stream through the second and fourth zones. At least one parameter of the recycled fluid stream, including at least one of the dry bulb temperature and the dew point of the recycled fluid stream, is monitored and the recycled fluid stream is controlled based on the at least one parameter. The recycled fluid stream can be any one or more of purge, isolation, and purge/regeneration loops.

An enclosure system can include an enclosure comprising at least one wall forming a first cavity. The enclosure system can further include a moisture control system in communication with the enclosure, wherein the moisture control system controls at least one condition within the cavity of the enclosure, where the at least one condition affects an amount of moisture within the first cavity. The moisture control system can include a sensor that measures an amount of moisture in desiccant disposed within a desiccant vessel. The moisture control system can include a structural filter and a desiccant vessel, where the structural filter is coupled to an enclosure and disposed within a cavity formed by the enclosure, where the desiccant vessel is removably coupled to the structural filter, and where the desiccant vessel is accessible from outside the enclosure.

A method for separating gaseous carbon dioxide from a gas mixture having the following steps: (a) contacting the gas mixture with sorbent material to allow gaseous carbon dioxide to adsorb under ambient conditions, using a speed of the adsorption gas flow; (b0) isolating the sorbent with adsorbed carbon dioxide from said flow-through of gas mixture; (b1) injecting a stream of saturated steam at ambient conditions and inducing an increase of the temperature of the sorbent to a temperature between 60 and 110° C., (b2,b3) extracting at least the desorbed gaseous carbon dioxide while still injecting or circulating steam at ambient atmospheric pressure conditions into the unit; and (c) bringing the sorbent material to ambient atmospheric temperature conditions. The speed of steam flow through the unit in step (b1) or on average in steps (b1)-(b3) is in the range of 0.5-10 times the speed of the adsorption in step (a).

A filter assembly with upper and lower filter chambers containing a filter material, preferably activated carbon, and a coalescing filter, respectively. The filter assembly includes a visual indicator for showing when the filter assembly is saturated and requires replacement or maintenance. In a preferred embodiment, the visual indicator is a temperature indicator. In an alternate embodiment, the visual indicator is an air flow indicator. A particularly preferred embodiment, the upper filter chamber includes a removable lid which allows for removal and replacement of the filter material. The filter assembly further includes at least one flashback inhibitor to prevent igniting fumes. The filter assembly connected to a storage drum which accepts residue from pressurized containers and removes contaminants from gas fumes which escape from the storage drum.