Atmospheric water harvesting systems utilize a sorbent cartridge configured to hold water capture material. The sorbent cartridge is made up of a plurality of permeable trays and a plurality of spacers that are arranged to provide cross-flow for adsorption and desorption airflow pathways. The systems are used for harvesting water from surrounding air.

The present disclosure relates to a drier cartridge that can improve the effect of cleaning compressed air by filtering out water, oil, and foreign substances, which are contained in compressed air, through several steps therein. In particular, when a narrow compressed air channel is formed between a cartridge body and a cartridge housing, a collision member that is a pre-filtering member that can primarily filter out oil, etc. is formed between the cartridge body and the housing, whereby it is possible to improve the performance of removing oil and water from a filter cartridge.

Systems and methods for generating nitric oxide are disclosed. A nitic oxide (NO) generation system includes at least one pair of electrodes configured to generate a product gas containing NO from a flow of a reactant gas; and a controller configured to regulate the amount of nitric oxide in the product gas produced by the at least one pair of electrodes by utilizing duty cycle values of plasma pulses selected from a plurality of discrete duty cycles to produce a target rate of NO production based on an average of discrete production rates associated with each of the plurality of discrete duty cycles.

A problem to be solved by the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2300 m.sup.2/g; a pore volume ranging from 0.20 to 0.70 cm.sup.3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; an abundance ratio R.sub.0.7/2.0, which is a ratio of a pore volume of micropores having pore diameters of 0.7 nm or less occupied in a pore volume of micropores having pore diameters of 2.0 nm or less, ranging from 5% to less than 25%, and a sheet density ranging from 0.030 to 0.200 g/cm.sup.3.

An object is to provide a new form of adsorbent suitable for a high performance canister. An adsorbent including activated carbon is used as the adsorbent for the canister and satisfies the following conditions. P.sub.0.2/100 expressed by Equation 1:

P.sub.0.2/100=X÷Y×100  (Equation 1)

is 18% or more, in Equation 1, X represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and Y represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa.

Apparatuses, systems, and methods are provided for a breather for a reservoir is provided, including a housing including a plurality of valves, the plurality of valves including (i) at least one valve in a first configuration configured to permit fluid communication from an interior portion of the housing with air outside the reservoir, and (ii) at least one valve in a second configuration configured to permit air to selectively pass between outside the breather and an interior portion of the breather. The breather further includes a plurality of first openings in the housing configured to be in fluid communication with air outside of the reservoir, a second opening of the housing configured to be in fluid communication with air inside the reservoir, and desiccant positioned within the housing.

The present disclosure relates to a purge system for a vapor compression system, where the purge system includes an emission canister configured to receive a gas flow. The gas flow includes a mixture of non-condensable gases and refrigerant of the vapor compression system. An adsorbent material is disposed within the emission canister and configured to adsorb the refrigerant and enable the non-condensable gases to flow toward an exhaust of the emission canister, where the adsorbent material is a silica gel.

An object is to provide an adsorbent using activated carbon fiber, the adsorbent being suitable for motor vehicle canisters and enabling reduction in pressure loss.

An activated carbon fiber sheet for a motor vehicle canister fulfils the following conditions (1) to (4). (1) The sheet has a specific surface area ranging from 1100 to 2300 m.sup.2/g. (2) The sheet has a density ranging from 0.010 to 0.200 g/cm.sup.3 or less. (3) The sheet has a thickness ranging from 0.1 to 100.00 mm. (4) The sheet has a fiber size of 13.0 μm or larger.

A canister includes a main casing, a first port formed in a wall of the main casing, and a first adsorbent section within the main casing. The first adsorbent section and the wall of the main casing define a space section therebetween. The first adsorbent section includes a first adsorbent and a first retainer holding the first adsorbent. The canister also includes a first elastic element disposed in the space section. The first elastic element urges the first retainer to elastically hold the first adsorbent. In addition, the canister includes a subcasing integral to the wall of the main casing. The subcasing is positioned within the space section. Further, the canister includes a second adsorbent section in communication with the first port. The second adsorbent section includes a second adsorbent disposed within the subcasing. Still further, the canister includes a second retainer holding the second adsorbent.

The present disclosure describes an evaporative emission control canister system that includes: one or more canisters comprising at least one vent-side particulate adsorbent volume comprising a particulate adsorbent having microscopic pores with a diameter of less than about 100 nm; macroscopic pores having a diameter of about 100-100,000 nm; and a ratio of a volume of the macroscopic pores to a volume of the microscopic pores that is greater than about 150%, and having a retentivity of about 1.0 g/dL or less. The system may further include a high butane working capacity adsorbent. The disclosure also describes a method for reducing emissions in an evaporative emission control system.