Separation efficiency of a gas in a gas separator mounted on a vehicle is improved. The gas separation system mounted on the vehicle provided with an internal combustion engine includes the gas separator configured to separate a predetermined component in the gas under the existence of water, a first passage connected to the gas separator so as to introduce an atmosphere into the gas separator, and a second passage connecting between an exhaust passage of the internal combustion engine and the first passage so as to introduce exhaust gas of the internal combustion engine into the gas separator.

The direct air capture (DAC) systems and methods efficiently and economically regenerate a desiccant bed without adding any thermal energy and without requiring any pressurization or depressurization of the desiccant reactors. The methods leverage water concentration differences in stream flows, the water concentration profile across a desiccant bed, and, optionally, exothermic water adsorption. These three elements, working in combination, are referred to as “reverse dry flow regeneration” or a “reverse dry air swing” regeneration process. Systems and methods for reverse flow regeneration include those for CO.sub.2 DAC applications, but they are also applicable to point source carbon capture and other similar technologies that require initial gas dehydration before exposure to a hydrophilic material.

An ambient air purification device has a filter device arranged in a filter receiving region of its housing. The filter device has a main filter element and a prefilter element, each having a circumferential frame device. A clamping force generating device is provided in the housing to exert an axial clamping force on the frame device of the main filter element resting, when mounted, at the frame device of the prefilter element. The clamping force is transmitted to the frame device of the prefilter element and presses the latter seal-tightly via a seal against a circumferential contact shoulder of the filter receiving region to seal the filter device in the filter receiving region. The frame device of the main filter element is sealed indirectly by the frame device of the prefilter element in relation to the housing and has no seal location of its own in relation to the housing.

The indoor unit of a mini-split heat pump has an auxiliary filter mounted atop the air inlet opening of the indoor unit. The auxiliary filter comprising three parallel filtering stages and each of these filtering stages having an air flow capacity equivalent to a nominal air flow rating of the indoor unit. The three filtering stages improve low-air-quality tolerance of a residential indoor unit of a mini-split heat pump, so that commercial and industrial users can also benefit from these high efficiency heat pumps to reduce their carbon footprint.

There is provided an air-treatment device including an airflow generator for generating an airflow, an adsorbent material for adsorbing one or more airborne contaminants, the adsorbent material being arranged such that at least a portion of the airflow passes through the adsorbent material, a heater arranged to heat a portion of the adsorbent material to desorb adsorbed contaminants, and a photocatalytic reactor arranged to receive air containing the contaminants desorbed from the heated portion of adsorbent material. The photocatalytic reactor includes a photo-catalyst for photocatalytic degradation of one or more of the contaminants, and one or more light sources for illuminating the photo-catalyst to facilitate photocatalytic degradation. The air-treatment device is arranged such that at least a portion of the airflow that has not passed through the heated portion of the adsorbent material contacts the one or more light sources.

An adsorption system is placed in an air passage used to supply air to a room. The adsorption system includes an adsorption section that adsorbs a target substance except water, and a reduction section that reduces accumulation of moisture in the adsorption section. An adsorbent used in the adsorption section contains a metal-organic framework. The reduction section includes a heating element that heats the adsorption section and evaporates moisture in air that has flowed into the adsorption section.

Provided is an air purification apparatus and method. The apparatus comprises a body having a cavity, an air intake, and an air exhaust. A water reservoir, disposed within the cavity contains a fluid and is in fluid communication with the air intake. A first chamber is disposed within the cavity and is in fluid communication with the water reservoir and the air exhaust. A solar power assembly attaches to the body, the solar power assembly has one or more solar panels. The air purification apparatus has a battery in electrical communication with the one or more solar panels.

A vortex particle separator has an impeller at a housing inlet with impeller blades spiraling around an impeller shaft and longitudinal axis of the separator to impart either clockwise or counterclockwise rotation to air flowing through the impeller when viewed looking downstream along the axis. The upstream end of each impeller blade is inclined in a direction opposite to the direction the air rotates when passing through the impeller, measured from a radial baseline through the axis and the juncture of the blade with the center shaft of the impeller. Thus, in each orthogonal plane along the axial length of the impeller the juncture of the blade with the housing is offset from the baseline in the rotational direction opposite the direction in which air flows through the impeller. An offset angle of 45° to 55° is believed suitable.

An apparatus includes a housing that defines a first zone, a second zone, a third zone, and a fourth zone. The apparatus includes an inlet, a first outlet, a second outlet, and a conveyor belt. The inlet is configured to receive a carbon dioxide-containing fluid in the first zone. The first outlet is configured to discharge a carbon dioxide-depleted fluid from the first zone. The second outlet is configured to discharge a carbon dioxide-rich fluid from the third zone. The conveyor belt passes through each of the zones. The conveyor belt includes a carbon dioxide sorbent. Within the first zone, the carbon dioxide sorbent is configured to adsorb carbon dioxide from the carbon dioxide-containing fluid to produce the carbon dioxide-depleted fluid. Within the third zone, the carbon dioxide sorbent is configured to desorb the captured carbon dioxide to produce the carbon dioxide-rich fluid.

Provided is an air purification apparatus and method. The apparatus comprises a body having a cavity, an air intake, and an air exhaust. A water reservoir, disposed within the cavity contains a fluid and is in fluid communication with the air intake. A first chamber is disposed within the cavity and is in fluid communication with the water reservoir and the air exhaust. A solar power assembly attaches to the body, the solar power assembly has one or more solar panels. The air purification apparatus has a battery in electrical communication with the one or more solar panels.