128 results about "Air contaminant" patented technology

An air quality device includes a housing defining an airflow path, a humidity control module in flow communication with the airflow path, and an air contaminant removal module. The air contaminant removal module comprises at least one of a particle removal module arranged within the housing, an odor removal module arranged within the housing, and an anti-microbial module arranged within the housing.

Techniques for cooling a data center include operating an air handling system in a first mode of operation to provide an outside airflow cooled through a direct evaporative cooling module to a data center without substantial mixing of the cooled outside airflow with another airflow; determining that a measured outside air contaminant level exceeds a setpoint contaminant level; and based on the determination, operating the air handling system in a second mode of operation to provide a datacenter return airflow cooled through an indirect evaporative cooling module to the data center without substantial mixing of the cooled return airflow with another airflow.

The present invention provides an apparatus 1 for the treatment of air comprising a low power corona discharge ozone generator 5,6 inside a chamber 9 having an inlet 2 and an outlet 7, and at least one air flow impeller 3 for inducing a flow of air through the chamber 9. The ozone generator 5,6 is formed and arranged for generating a restricted concentration of ozone, within an inactivating zone 10 contained within the chamber 9, through which the air flow is passed. The restricted concentration is sufficient to inactivate airborne pollutant material entrained in the air flow, yet decays sufficiently outside the inactivating zone so that the concentration of ozone in the cleaned air expelled from the apparatus 1 is at a physiologically acceptable level without the use of an ozone decomposition catalyzer.

Techniques for treating an outside airflow with a direct evaporative economizer include circulating an airflow from an ambient environment into a direct evaporative economizer; circulating a cooling fluid into the direct evaporative economizer at a first rate so that a temperature condition of a supply airflow meets a predetermined range of setpoint temperatures; evaporating at least a portion of the cooling fluid circulated at the first rate into the airflow; determining that a measured air contaminant level of the airflow is greater than a setpoint contaminant level; and based on the determination, circulating the cooling fluid into the direct evaporative economizer at a second rate to precipitate a plurality of contaminants from the airflow into the cooling fluid, the second flow rate of the cooling fluid operable to adjust the temperature condition of the supply airflow outside of the predetermined range of setpoint temperatures of the supply airflow.

An autonomous ventilation system includes a variable-speed exhaust fan, a controller, an exhaust hood, and an infrared radiation (“IR”) sensor. The exhaust fan removes air contaminants from an area. The controller is coupled to the exhaust fan and adjusts the speed of the exhaust fan. The exhaust hood is coupled to the exhaust fan and directs air contaminants to the exhaust fan. The IR sensor is coupled to the controller, detects changes in IR index in a zone below the exhaust hood, and communicates information relating to detected changes in IR index to the controller. The controller adjusts the speed of the exhaust fan in response to information relating to detected changes in IR index. The autonomous ventilation system also includes an alignment laser to indicate a point at which the IR sensor is aimed and a field-of-view (“FOV”) indicator to illuminate the zone in which the IR sensor detects changes in IR index.

Methods, systems, and apparatus for reducing or eliminating airborne pollutants and generating a measure of usable energy from the same are provided. The Implo-Dynamics™ Treatment System includes several embodiments for mixing steam and emissions and injecting said mixture into a process fluid transmission network. The vacuum induced flow of the Working Fluid provides a means of propelling a Hydro Turbine unit for energy recovery purposes. The process includes reactant injection, gas transfer, filtration, remediation of pollutants, and delivers a novel means for carbon dioxide capture and sequestration. Furthermore, the detoxified process by-product solids represent a beneficial reutilization and/or recycling resource. The methods and systems of the present invention include a comprehensive arrangement of process configurations and components as well as a means of operation.

The invention discloses a PM2.5 real-time level prediction method and system based on neural net. The method collects the historical concentration values of air contaminant indexes of PM2.5, O3, CO, PM10, SO2 and NO2 as well as the historical values of atmosphere temperature, moisture and wind force and the like, applies the historical data as the training set to train the neural net model, and build a neural net prediction model based on the neural net comprehensive atmospheric indexes. A mobile equipment terminal sends PM2.5 level real-time request to a server, substituting the real-time-acquired contaminant indexes and atmospheric indexes as the test data into the neural net prediction model for prediction and pushing. The method provides a PM2.5 level query option to the mobile terminal users in the cities with few PM2.5 monitoring points or without PM2.5 monitoring point, reduces the prediction cost of PM2.5, and at the same time conducts the real-time prediction accurate to day and time, thus having good universality.

The apparatus and method provide an airflow to a person or group of persons or a space such as within an airplane cabin or cockpit, operating in conjunction with an air supply which produces a high velocity air stream, such as an aircraft gasper (14). Existing systems may filter, purify and/or clean the air supplied to the occupant, and the air exiting the personal air outlet may be adjusted to a relatively high velocity. The narrow, high velocity stream of air forms a turbulent boundary layer, which tends to entrain potentially foul air from the surrounding region and directs it towards the passenger. The airflow from the apparatus and method may have reduced velocity and lower thermal and humidity gradient and may be treated to remove locally-originating contaminants. The apparatus includes a housing which receives a primary stream of air, such as from an aircraft gasper (14) or personal air outlet. A secondary inlet (17) into the housing admits ambient air into the housing interior A mixing chamber (30) within the housing receives the primary air stream and captures its momentum to entrain ambient air entering the housing through the secondary inlet. The combined streams are discharged, typically towards an occupant of the cabin. The ambient air may be treated before or after it is entrained so as to remove or disable pathogens or other air contaminants including gases and particles, or the ambient air may be drawn from a source distant from sources of air contamination and/or undesirable thermal conditions.

A unique, multi-cartridge, easily re-configurable ambient air filter assembly (air contaminant control system) that removes particulate and gaseous chemical/biological contaminants from the incoming cathode air stream on a fuel cell or similar devices is described. The filter assembly is composed of individual filter cartridges (sub-assemblies) of various filtration media that are targeted at removing specific airborne contaminants. Combining specific sets of cartridges enables the filter assembly to be readily/rapidly configured (and re-configured) for specific applications—such as urban, rural, industrial, or military battlefield environments. Selection of correct media ensures complete removal of potential contaminants, enables rapid re-configuration to different environments, quick replacement of spent cartridges without disposal of non-spent media (reducing waste and cost). The invention concept is highly configurable to various sizes and shape fuel cells or other applications requiring clean ambient air by simply scaling the filter assembly size and air flow rates.

The present invention is directed toward a movable airborne contaminant control system having a retractable/extendable booth attached in a sealing manner to a ventilation unit, preferably mounted on wheels. The ventilation unit includes a filter assembly that opens into the work are formed by the booth. Front doors support air filters. In operation, the ventilation unit draws air in a longitudinal laminar flow over one or more work pieces. The filter assembly captures both particulates and VOCs to allow the exhaust air to include an extremely low contaminant load.

An escape hood, comprising a respirator, having an air filter suitable for filtering toxic air contaminants and positioning members to retain the respirator in a respiratory path of the user; an optical lens; a expanding member, permitting hood to expand from a compact storage configuration to a usage configuration; a sealing structure, around said air filter, for preserving said filter during storage; and an unsealing mechanism, adapted to allow a user to withdraw the escape hood from a storage vessel, wherein during withdrawal, said sealing structure is automatically unsealed. An escape hood system is also provided, comprising: an array of storage vessels, each vessel being adapted to receive a sealed escape hood; a retainer, for retaining a sealed escape hood within the vessel, wherein the escape hood is unsealed during withdrawal of the escape hood from a storage vessel; and an electronic sensor for determining an occupancy of a storage vessel.

An air filtration and exhaust system is described. The system comprises a microcontroller, a power supply, and a series of sensors that detect the presence of airborne contaminants such as ultra fine particles, smoke, natural gas and radon gas. In the presence of these airborne contaminants, the system is designed to inactivate and prevent operation of nearby food preparation appliances. Once these contaminants have been safely removed, the operation of these appliances is restored. In addition, the ventilation system may be equipped with a purification subassembly, which safely and efficiently removes such containments from the area. The system may also comprise an alarm that is activatable in the presence of these contaminants.

A composite catalytic material (and process for its manufacture) is provided which comprises a catalyst adhered to a polymeric support material. This composite catalytic material can be used to remove or degrade contaminants in water and to remove or degrade carbon monoxide or other airborne contaminants.

A method and an apparatus are provided for deodorizing and disinfecting air and droplets from urinal, toilet bowl, and other receivers and holders of urine and fecal matter. The apparatus comprises a housing (1) having an air inlet (2) and air outlet (3), wherein the housing (1) encloses a droplet removal chamber (4) for removing droplets from airflow; a deodorization and disinfection chamber (5) for removing air contaminants in the airflow; and an delivery unit (6) for airflow generation. Being actively drawn into the apparatus, air contaminants such as odor, bacteria and virus are removed without discharge of contaminated air and causing secondary pollution. The apparatus and method provide odorless and comfortable environment and avoid disease transmission in both public and domestic toilets.

The invention discloses an ultra-clean emission technology for removing ammonia sulfate chemical fertilizer as an SO2 byproduct in flue gas, and belongs to a desulfurization and denitrification technology for air contaminant treatment in the field of environmental protection. According to the technology, ammonia is taken as a desulfurizing agent, high-temperature flue gas is cooled to 50-70 DEG Cthrough a concentration section of an absorption tower and then enters an absorption section of the absorption tower, an absorption liquid in the absorption section is subjected to a reaction with SO2in the flue gas to finish the desulfurization process, the absorption liquid obtained after the reaction flows to an absorption circulating tank automatically, the absorption liquid in the absorptioncirculating tank is subjected to a reaction with ammonia, ammonium sulfite is generated, part of ammonium sulfite is taken as the absorption liquid to return to the absorption section, part of ammonium sulfite is oxidized into ammonium sulfate, an ammonium sulfate solution is sent to the concentration section to exchange heat with the flue gas, ammonium sulfate crystals are separated out, a suspension containing the ammonium sulfate crystals is subjected to swirling flow treatment and filtered, solids are dried to be a finished product, and a liquid returns to the concentration section; the desulfurized flue gas passes through a folded plate type demister and then enters a desulfurized flue gas deep purification section at the upper part of the absorption tower for treatment, and accordingly, the flue gas meets the ultra-clean emission standard.

A filter medium of an air purifying respirator captures one or more substances from the air in a worker's environment as the worked breathes. Air contaminants captured by the respirator filter media can be subsequently analyzed and measured. An air flow meter placed at an air channel of the respirator measures air flow and/or total air volume inspired by the worker wearing the respirator. Personal chemical exposure of the worker can be assessed from the filter media measurements and air flow data.

Details relating to the operation of a vehicle under adverse conditions are recorded and collected. This data is particularly useful to forestall catastrophic failures, and to provide valuable information for potential buyers of used vehicles. Among the operating conditions that are considered are high levels of air contaminants, operation in extreme hot or cold temperatures, hauling heavy loads, as well as hard braking, turning and acceleration. In addition to the detection and recording of data, prorated maintenance schedules are recalculated and adjusted to accommodate for the operation of the vehicle under these adverse or less than ideal conditions. Typically, the data is stored in the on-board computers present in most vehicles. Periodic off loading of the data to the dealer and service providers is also provided.