A system and method for determining a remaining processing capacity of a scrubber having a flow path and a processing material disposed along the flow path. A device may comprise a plurality of optical sensors disposed within the processing material and arranged along the flow path, a light source, and a processor for determining the capacity according to signals received from the optical sensor. The device may be used to illuminate processing material adjacent to each optical sensor using the light source, measure a light value reflected by the processing material at each optical sensor, and determine the remaining processing capacity of the scrubber, using the processor, based on the measured light value. Devices may comprise a memory, such as a non-volatile memory to allow multiple uses of a scrubber without reloading with fresh processing material.

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.

An apparatus for dehumidification of air comprises a housing (2) provided with an inlet (3) for process air, an outlet (4) for process air and an opening (17) for regeneration air, a dehumidification element (6), a fan (10) for bringing process air to flow through at least a first portion of the dehumidification element, and a heating element (15) adapted to heat a part of process air flowing through the dehumidification element for regeneration of the dehumidification element by means of the heated process air. By providing control means (4a, 10, 17a, 17b) adapted to control the amount of air that flows though the outlet (4) for process air and the opening (17) for regeneration air and means (6b, 15a; 25) adapted to calculate consumed power for the heating element, wherein the heating element (15) is a PTC heater, a user can in a simple way adjust the operating parameters to a desired operating mode.

A method of generating oxygen and at least one of hydrogen or ammonia includes receiving ambient air containing moisture, collecting liquid water from the ambient air, receiving, by a water electrolyzer, the collected liquid water and electricity from an electrical source, and performing an electrolysis process by the water electrolyzer to thereby generate the oxygen and the at least one of hydrogen or ammonia from the received liquid water and electricity.

A three-product PSA system which produces three product streams from a feed gas mixture comprising a light key component, at least one heavy key component, and at least one intermediate key component is described. The three-product PSA system produces a high pressure product stream enriched in the light key component, a low pressure tail gas stream enriched in the at least one heavy key component, and an intermediate pressure vent gas stream enriched in the at least one intermediate key component.

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 adsorption system for the production of demineralized water aboard a motor vehicle comprising: a condenser, an evaporator, a first and a second adsorbent bed, each containing adsorbent material. Each adsorbent bed is selectively connectable to the condenser and/or the evaporator by pipes provided with at least one control valve. Each adsorbent bed is selectively and alternately connectable to a supply circuit of a heating source and to a supply circuit of a cooling source via supply valves. The condenser is directly and selectively connectable to the evaporator by a direct branch provided with a relative throttle valve, An inlet valve is arranged along an air inlet branch, and selectively establishes a fluid connection between the air of the environment outside the system and the adsorbent beds, so as to capture water from the external air through an adsorption phenomenon performed by the adsorbent beds and to produce water.

A gas separation unit for the separation of carbon dioxide from air is proposed for use in a cyclic adsorption/desorption process and using a loose particulate sorbent material. Sorbent material is arranged in at least two stacked layers, and each layer comprises two sheets of a flexible fabric material which is gas permeable but impermeable to the loose sorbent material. The sheets are arranged parallel defining an inlet face and an outlet face, are arranged with a distance in the range of 0.5-2.5 cm, and are enclosing a cavity in which the sorbent material is located. Said layers are arranged in the unit such that the inflow passes through the inlet face, subsequently through the particular sorbent material located in the cavity of the respective layer, subsequently to exit the layer through the outlet face to form the gas outflow.

The operation of an air compressor is controlled to control engine performance to thereby improve the performance of the vehicle. A compressor (4) driven by an engine (3) of a vehicle and supplying compressed air to loads (51-54) is controlled by an ECU (2). A loaded state and an unloaded state of the compressor (4) are switched between each other according to the requirements from the loads (51-54). When the vehicle requires braking force, the compressor (4) is set to the loaded state irrespective of the requirements from the loads (51-54).

Disclosed are processes for removing H.sub.2S from gas streams containing H.sub.2S, the processes comprise contacting gas streams with a mixed metal oxy-hydroxide media comprising two or more metals selected from the group consisting of magnesium, chromium, manganese, iron, cobalt, zinc and copper. Also disclosed are processes for removing H.sub.2S from gas streams containing H.sub.2S, the processes comprise contacting the gas streams with a mixed metal oxy-hydroxide media comprising one or more metals selected from the group listed above plus one or more metals selected from the group consisting of aluminum, silicon, titanium and zirconium.