Abstract: A system includes a direct air capture (DAC) system, and an ammonia production system in communication with the DAC system. The DAC system includes an air contactor configured to capture carbon dioxide in air. The ammonia production system includes a reforming process and a combustion process. The ammonia production system is supplied with an air stream including a first air stream configured to be supplied into the reforming process. The DAC system is in communication with the ammonia production system through the first air stream.

Abstract: A carbon dioxide capture device and an HVAC system are provided. The carbon dioxide capture device includes a direct air capture unit having a carbon dioxide filter, and an induction heating unit coupled with the direct air capture unit. The HVAC system includes the carbon dioxide capture device and a desiccant unit.

Abstract: An air curtain device and an air circulation system are provided. The air curtain device includes a main body, an air supply opening configured to receive air, an armrest air jet aperture configured to discharge the received air, and a headrest air jet aperture configured to discharge the received air. The air circulation system includes an air supply device and the air curtain device.

Abstract: An HVAC system is provided. The HVAC system includes a UV light source configured to disinfect air, a ventilation system, and an adsorption filter. The adsorption filter is configured to capture carbon dioxide from air.

Abstract: A system for capturing carbon dioxide from ambient air includes an input port configured to accept ambient air into the system, an air conditioning system configured to draw the ambient air into the input port and reduce a temperature of the ambient air, a filter device configured to capture carbon dioxide from the ambient air after the temperature of the ambient air is reduced by the air conditioning system, and an output port, through which the ambient air is discharged from the system after the ambient air is processed with the filter device.

Abstract: An HVAC system is provided. The HVAC system includes a UV light source configured to disinfect air, a ventilation system, and an adsorption filter. The adsorption filter is configured to capture carbon dioxide from air.

Abstract: The hybrid air-slurry flow cell battery is at least one flow cell having a core area having an anode, a cathode parallel to the anode, and an ion-selective membrane disposed between the anode and the cathode to define parallel anolyte and catholyte flow paths through the core area on opposite sides of the membrane. An electrolyte tank is connected to the input and output of one of the flow paths to circulate a slurry containing a first electrochemically active redox reactant adsorbed on carbon particles suspended in a solvent between the electrolyte tank and the flow path through the core area. A gas diffusion electrode is connected to the other flow path, the gas (preferably air or oxygen) including a second electrochemically active redox reactant forming a redox couple with the first. A redox reaction across the membrane generates a voltage differential between the electrodes.