The specification and drawings present a new apparatus and method for continuously providing an oxygen-enriched gas/air using a relative motion of selected surface(s) of an apparatus (such as fossil-fueled combustion device/vehicle) relative to an atmospheric air with a speed exceeding a threshold value for, e.g., improving combustion, exhaust and related properties of the apparatus. An oxygen-enriched gas/air layer can be formed along/near each aforementioned surface from the atmospheric air due to pushing the atmospheric air along the surface(s) during that relative motion and collected by corresponding collector gate(s) located inside the apparatus near/adjacent to the corresponding surface. The apparatus can be an object (e.g., a vehicle) moving through the atmospheric air with a relative speed exceeding the threshold value. Alternatively, the apparatus can be a stationary object (e.g., a power generator) while the atmospheric air, having a desired speed exceeding the threshold value, is moved/blown toward the stationary object.

A system and method for prediction of the time to service components for a fleet of portable oxygen concentrators (POCs) is disclosed. Each of the POCs include a transmitter to transmit operational data. A network interface is configured to receive operational data from the POCs. A user database contains profiles of users associated with respective POCs. An analysis engine updates the profile of a user associated with a POC in the user database based on received operational data from the POC. The analysis engine determines a similar profile in the user database to the updated profile. The analysis engine predicts a service date for the component of the POC based on the similar profile and the updated profile.

A system and method for prediction of the time to service components for a fleet of portable oxygen concentrators (POCs) is disclosed. Each of the POCs include a transmitter to transmit operational data. A network interface is configured to receive operational data from the POCs. A user database contains profiles of users associated with respective POCs. An analysis engine updates the profile of a user associated with a POC in the user database based on received operational data from the POC. The analysis engine determines a similar profile in the user database to the updated profile. The analysis engine predicts a service date for the component of the POC based on the similar profile and the updated profile.

An air purification device includes a device main body, a purification filter and a gas detection module. The device main body includes a gas-inlet opening and a gas-outlet opening. The purification filter is disposed in the device main body and includes at least one activated carbon layer and at least one zeolite layer stacked on each other, wherein the activated carbon layer filters and absorbs suspended particles contained in an air introduced through the gas-inlet opening, and the zeolite layer includes porous structures with hydrophobic property for controlling and absorbing volatile organic compounds contained in the air introduced through the gas-inlet opening, thereby a purified gas is generated from the air and is discharged through the gas-outlet opening. The gas detection module is disposed in the device main body for detecting and obtaining a gas quality data of the air passing through the gas-inlet opening and outputting the gas quality data.

A gas concentrating method and a gas concentrating device in which a large-capacity storage tank is not required and power consumption can be minimized are provided. A gas concentrating device (100) which concentrates a target gas including: a gas separating membrane module (3) including a gas separating membrane (1) and an accommodating container (2), a gas supply line (L1) through which a first mixed gas (G1) containing a target gas is supplied to the gas separating membrane module (3), a gas recovery line (L2) through which a second mixed gas (G2) containing a target gas is taken out from the gas separating membrane module (3), a gas discharge line (L3) through which an exhaust gas (G3) is discharged from the gas separating membrane module (3), and a raw material line (L0) through which a raw material (G0) to supplied to the gas supply line (L1), in which the raw material (G0) through the raw material line (L0) and the second mixed gas (G2) through the gas recovery line (L2) are supplied to the gas supply line (L1) and a gas concentrating method are provided.

A gas concentrating method and a gas concentrating device in which a large-capacity storage tank is not required and power consumption can be minimized are provided. A gas concentrating device (100) which concentrates a target gas including: a gas separating membrane module (3) including a gas separating membrane (1) and an accommodating container (2), a gas supply line (L1) through which a first mixed gas (G1) containing a target gas is supplied to the gas separating membrane module (3), a gas recovery line (L2) through which a second mixed gas (G2) containing a target gas is taken out from the gas separating membrane module (3), a gas discharge line (L3) through which an exhaust gas (G3) is discharged from the gas separating membrane module (3), and a raw material line (L0) through which a raw material (G0) to supplied to the gas supply line (L1), in which the raw material (G0) through the raw material line (L0) and the second mixed gas (G2) through the gas recovery line (L2) are supplied to the gas supply line (L1) and a gas concentrating method are provided.

An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. Solid particulates that are dried and entrained within the cooled and humidified flue gas can be separated from the flue gas via a particulate collector.

The present invention relates to a kit for concentrating low-concentration air pollutants, and to a concentration kit for concentrating low-concentration air pollutants, and then desorbing same so as to detect the components and concentrations of the pollutants. The present invention comprises: a sensor positioned on a channel in which gas moves, so as to detect pollutants in the gas; and a concentration part, which comprises an adsorbent for adsorbing and desorbing the pollutants in the gas moving to the sensor, so as to transfer concentrated pollutants to the sensor.

An oxygen concentrator is provided with a controller for recovering an oxygen concentration to a level suitable for treatment in a short period of time by selecting an optimum purge time corresponding to the deterioration state of an adsorbent. The judgment of moisture-absorption deterioration is performed when the detected value of the oxygen concentration sensor is equal to or less than a control value of the oxygen concentration in the oxygen-enriched gas and the detected value of the pressure sensor is equal to or more than an adsorption pressure at which the oxygen concentration increases significantly before and after the control to reduce the purge time, and control of reducing a time for the purge step shorter than a preset time is performed.

An oxygen concentrator is provided with a controller for recovering an oxygen concentration to a level suitable for treatment in a short period of time by selecting an optimum purge time corresponding to the deterioration state of an adsorbent. The judgment of moisture-absorption deterioration is performed when the detected value of the oxygen concentration sensor is equal to or less than a control value of the oxygen concentration in the oxygen-enriched gas and the detected value of the pressure sensor is equal to or more than an adsorption pressure at which the oxygen concentration increases significantly before and after the control to reduce the purge time, and control of reducing a time for the purge step shorter than a preset time is performed.