Abstract: A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or more sensors and uses the sensor data to calculate a figure of merit related to the efficiency of the system. In one embodiment, the sensors include one or more of the following sensors: a suction line temperature sensor, a suction line pressure sensor, a suction line flow sensor, a hot gas line temperature sensor, a hot gas line pressure sensor, a hot gas line flow sensor, a liquid line temperature sensor, a liquid line pressure sensor, a liquid line flow sensor. In one embodiment, the sensors include one or more of an evaporator air temperature input sensor, an evaporator air temperature output sensor, an evaporator air flow sensor, an evaporator air humidity sensor, and a differential pressure sensor.

Abstract: A room temperature trap for the purification and concentration of gaseous methane. The trap utilizes the adsorption and desorption properties of microporous spherical carbon molecular sieves to purify and concentrate radiolabelled methane for application in an automated synthesis module without the need for cryogenic cooling.

Abstract: A system and method for supercritical fluid enrichment of radioactive isotope/s are disclosed. The method involves pressurizing an outer chamber and an inner centrifugal chamber of a stage to supercritical pressure; supplying material including target isotope/s at supercritical pressure to the inner chamber; spinning the inner chamber to centrifuge the material including target isotope/s; providing a differential pressure between the inner chamber and the outer chamber; wherein windows in the inner chamber enable passage of the target isotope or an undesired isotope from the inner chamber to the outer chamber in response to the differential pressure.

Abstract: A powered air purifying respirator and method for directing a forced flow of air to a wearer. A battery operatively powers a fan fluidly coupled with the air flow path which exhibits, in some circumstances, a passivation. A voltage delay sensing circuit, operatively coupled to the battery, provides an indication related to the passivation. A signal may provide an indication to a user of the passivation of the power source. A correction circuit may correct such passivation.

Abstract: A method for degassing a fluid includes providing a degassing system having a degassing module and a fluid pump apparatus having a fluid reservoir, wherein the fluid pump apparatus is operated in a discontinuous mode involving one or more discrete pumping cycles having a first cycle time. The fluid pump apparatus is calibrated to deliver a predetermined volume of the fluid from the fluid reservoir during each of the pumping cycles, and the degassing module is adapted to operably move gas from the fluid to an extent sufficient to render the fluid volume to a desired degassed condition within a period of time that is not greater than the first cycle time.

Abstract: During the conventional temperature swing adsorption (TSA) process, NF3 co-adsorbed with the impurities is vented during regeneration. This invention is a novel TSA cycle in which the co-adsorbed NF3 is recovered. In this novel TSA cycle, a control scheme is used to stop the adsorption prior to the saturation of the adsorber with impurities and use a recovery purge gas (either co-current or counter-current) to release the co-adsorbed NF3 off the saturated adsorber. The effluent of the inert purge gas can be combined with the effluent of the on-stream vessel or can be recycled to the feed of the on-stream vessel. 10%-100% of the co-adsorbed NF3 is recovered and made available as product in this novel TSA cycle. Thus the overall process yield of NF3 is increased. The removing of the co-adsorbed NF3 from the adsorber also prevents adsorber degradation thus prolonging the useful life of the adsorber.

Abstract: An air filtering apparatus including an electrolytic bath for electrolyzing water to generate electrolytic water, a gas-liquid contact member in which the electrolytic water generated in the electrolytic bath infiltrates and an air blowing fan for blowing air to the gas-liquid contact member is equipped with a water circulation passage through which the electrolytic water is supplied/circulated to the gas-liquid contact member, the electrolytic water passing through the gas-liquid contact member is received and stocked by a water receiving tray and the stocked electrolytic water is pumped up and supplied to the gas-liquid contact member, a drain pipe branched from the water circulation passage, a water stop valve for opening/closing the drain pipe, and a drain receiver for receiving and stocking the electrolytic water discharged from the drain pipe when the water stop valve is opened.

Abstract: An exhaust treatment system comprises a particulate matter filter, a first heater element, and a second heater element. The particulate matter (PM) filter filters PM from exhaust gas and includes N zones. Each of the N zones includes an inlet area that receives a portion of the exhaust gas. N is an integer greater than one. The first heater element includes a contact area that heats exhaust gas input to an inlet area of a first one of the N zones. The second heater element includes a second contact area that heats exhaust gas input to an inlet area of a second one of the N zones. A ratio of the contact area of the first heater element to the inlet area of the first zone is greater than a ratio of the contact area of the second heater element to the inlet area of the second zone.

Abstract: The present invention relates to a process and plant for the recovery of carbon dioxide from a gas stream by means of pressure swing adsorption using an adsorbent, such as X or Y type Zeolite adsorbents. The gas feed stream suitably has a moderate concentration of carbon dioxide, such as gas emitted from the filling bowl of the carbonated drinks bottling plant and is recovered without rinsing or purging the adsorbent with a high purity carbon dioxide gas stream. The process therefore provides the advantage of being capturing carbon dioxide from the effluent that would otherwise be emitted to the atmosphere and captures the carbon dioxide in a manner that minimises operational and capital expenditure. The present invention also relates to a process for utilizing one dry stream from a gas separation unit (adsorption or membrane process) to conduct evaporative cooling of water, which is used as the water in a liquid ring vacuum pump thereby decreasing the vacuum level and improving the performance.

Abstract: Aspects of the invention include a method and apparatus for reversibly sorbing a target gas. In one embodiment, an apparatus for reversibly sorbing a target gas is disclosed. The apparatus includes an inlet, a multi-channel monolith coupled to the inlet, the multi-channel monolith including a plurality of channels, each one of the plurality of channels includes one or more walls, wherein at least one of the one or more walls of at least one of the plurality of channels is porous and wherein one or more of the plurality of channels contain a sorbent and an outlet coupled to the multi-channel monolith.

Abstract: A method of controlling the operation of an electrostatic precipitator (6), wherein a soot-blowing operation is performed in an upstream device (2), comprising the steps of: causing a signal to be sent to the effect that a soot-blowing operation is about to be initiated in said upstream device (2) to a controller (34) that is operative for controlling the performance of a rapping event with respect to the electrostatic precipitator (6), and said controller (34) causing a rapping decision (52; 152) to be made, based on the receipt thereby of said signal, said rapping decision including the establishment of a first point in time (T1) for initiating the performance of a rapping event with respect to the electrostatic precipitator (6), such that said first point in time (T1) is correlated to a second point in time (T2), the latter being the time at which the soot-blowing operation of said upstream device (2) is initiated.

Abstract: A synchronized supercharge electrostatic field UV germicidal air filtration device is a high efficiency absolute air cleaner. It incorporates a dual function ionization system, electrostatic field filtration system UV light germicidal function within one system. This invention allows the physical size of air cleaning device to be substantially reduced while the absolute filtration efficiency is highly improved. This device provides a filtered and sterilized air output quality down to submicron size with quantifiable results; while it can be physically fit into an office partition wall. Secondly, both high voltage power supporting ionization and high voltage power supporting the electrostatic energy field are provided by one high voltage transforming circuit making it the most cost effective air filtration system.

Abstract: Provided herein are new compact and miniature oxygen concentrator apparatus, as well as methods incorporating use of the apparatus. The apparatus and methods utilize selected cycle times, adsorbent specifications and novel conditions to produce a fast Pressure Swing Adsorption (“PSA”) system. The oxygen concentrator apparatus and methods herein have significant utility in the fields of biotechnology, engineering, and medicine. A particularly advantageous use of this invention is as a “snap on” portable oxygen concentrator, where piped compressed air is already available such as in civil and military hospitals, ambulances, air craft cabins, mobile fish tanks, etc. Those embodiments eliminate the need for dedicated moving machinery (blower, compressor, vacuum pump) normally associated with a conventional PSA oxygen concentrator.

Abstract: An apparatus for sampling air in an aircraft cabin comprises: a sensor 2 for detecting air contaminants, a processor 4, a data logger 6, means 8 for detecting when the apparatus is airborne, a control unit 10, a manual trigger 12, at least one adsorbent tube 18, valves 14, 16 or other means for isolating the adsorbent tube from contamination and a pump 20 for drawing air through the adsorbent tube. An alternative apparatus uses a Tedlar® bag. Methods of sampling air and uses of the apparatus are also disclosed.

Abstract: A method and apparatus for two-dimensional gas chromatography (GC), including a valve having first and second positions (P1, and P2), and first through fourth sample flow paths (FP1-FP4). In P1, a first gas sample is collected from a first dimension GC column via FP1, a first pressure source and a first, second dimension GC column are connected via FP2, a second pressure source and a second, second dimension GC column are connected via FP3, and FP4 is disconnected. In P2, the first sample in FP1 is introduced to the second, second dimension GC column via FP1, with aid of the second pressure source, a second gas sample is collected from the first dimension GC column via FP2, the first pressure source and the first, second dimension GC column via FP4 are connected, and FP3 is disconnected.

Abstract: An adaptable dual direction, differential pressure assembly is disclosed. Solenoid valves release controlled bursts of air into a top of a container. A rate of the controlled bursts of air is partially responsive to a pressure differential between atmospheric pressure and that of compressed air in the reservoir. A pleated filter is fitted inside of the container. The pleated filter has an inner wall and an outer wall and has pleatings separated using hot melt glue beads there between. The controlled bursts of air are programmed to be substantially automatically responsive to one or more pressure differentials between an inner wall and an outer wall. In one embodiment, air is drawn from the blower through the pleated filter from the inner wall to the outer wall until a desired pressure differential is achieved.

Abstract: The concentrator separates one gas (i.e. oxygen) from a gas mixture (i.e. air) through the process of vacuum swing adsorption (VSA). An adsorber material is located within an adsorber bed. The adsorber bed has an inlet and an outlet. A valve is located downstream of the outlet. A pump, such as a blower, is provided upstream of the adsorber bed to drive a mixed gas into the adsorber bed. The adsorber material selectively adsorbs an undesirable gas (i.e. nitrogen) leaving a desirable gas (i.e. oxygen) from the mixture to pass through the outlet and through the valve. The pump is reversible. When the adsorber material becomes saturated, the pump is reversed and a vacuum is drawn on the adsorber bed. The valve is closed while the pump is operating in this reverse direction. After the adsorber material has desorbed the undesirable gas, the pump again reverses and the cycle is repeated.

Abstract: A method of operating a filtration system that filters flue gas, which includes particulate matter and a gaseous pollutant. The filtration system may include a fabric filter, which is cleaned with periodic pulse cleanings, a discharge electrode upstream of the fabric filter, which imparts an electric charge to at least some of the particulate matter before the particulate matter collects on the fabric filter, a sorbent, which is injected into the flue gas upstream of the fabric filter and absorbs at least some of the gaseous pollutant, and a fan, which draws the flue gas through the fabric filter. The filtration system may have a pulse cleaning interval setting that may be manipulated by an operator of the filtration system. The pulse cleaning interval setting may be the time between the pulse cleanings.

Abstract: A flammable gas concentration device comprises an adsorption tower filled by an adsorbent for adsorbing a flammable gas; feeding means for feeding a raw gas containing air and a flammable gas to the adsorption tower via a feeding path and discharging an exhaust gas in the raw gas which has not been adsorbed to the adsorbent to an outside of the adsorption tower via a discharge path; collection means for reducing a pressure in the adsorption tower lower than an atmospheric pressure, and desorbing the flammable gas adsorbed by the adsorbent and collecting the flammable gas through a collection path; and control means for sequentially executing a flammable gas adsorption step of feeding the raw gas to the adsorption tower and discharging the exhaust gas from the adsorption tower by the feeding mean, and a flammable gas desorption step of collecting the flammable gas desorbed by the collection means.

Abstract: A room temperature trap for the purification and concentration of gaseous methane. The trap utilizes the adsorption and desorption properties of microporous spherical carbon molecular sieves to purify and concentrate radiolabelled methane for application in an automated synthesis module without the need for cryogenic cooling.

Abstract: The invention relates to a method with associated device for the removal of fine particulates from the air in open areas and includes the phases of suction intake, filtering and re-emission into the atmosphere of the air taken from the environment at a height near the ground. The device also provides for the cleaning of the filtering equipment and for the discharge of the washing sludge for subsequent disposal.

Abstract: A timer that starts a time cycle when a filter is placed into a housing is disclosed. The timer cycle will not reinitiate a new time cycle when the previously used filter is removed from the housing and reinserted into the housing. In one embodiment, the filter timer assembly includes a filter having a filter media surrounded by a filter frame, a housing for supporting the filter, a piercing post connected to the housing moveable between a first resting position and a second position in direct contact with the filter frame, and a timer connected to the piercing post. The piercing post punctures a portion of the filter frame to create an opening in the filter frame. The timer initiates a count when the piercing post is actuated to the second position.

Abstract: The present invention provides for a process for purifying carbon monoxide-containing gas streams that contain impurities such as hydrocarbons by using a cryogenic adsorption process. Preferably this process is a temperature swing adsorption process at cryogenic temperatures below ?75° C. Alternatively, the carbon monoxide-containing gas streams may be purified using the cryogenic adsorption process with membrane separation units or vacuum swing adsorption units or cryogenic distillation.

Abstract: An exhaust gas purifying apparatus for an internal combustion engine includes a particulate filter for trapping particulates found in the exhaust gases of the engine. The regeneration process for burning the particulates trapped in the particulate filter is executed by performing post injection of fuel. The regeneration process is suppressed according to an amount of fuel injected during post injection.

Abstract: A cone (36) and a ring (38) are accessories separately used during respective phases of cleaning a diesel particulate filter (10, 10?) in a cleaning machine that uses compressed air pulses to clean the substrate (12) where particulate matter in engine exhaust has been trapped. In one phase the ring covers the outer perimeter margin of one end face of the substrate, and in the other phase the cone covers a central inner zone of the end face.

Abstract: A FET gas sensor having a relatively low operating temperature, for example, room temperature, is free from cross sensitivities from interfering gases by a preceding in-line filter. The sensor's service life is substantially stabilizable by using fabric-like activated charcoal filters which can be regenerated by a moderate temperature increase, and by limiting the diffusion of the analyte gas, which is made possible by the relatively small amount of gas detectable on the sensitive layer of the sensor. This substantially increases the service life of the filters. The gas sensor eliminates cross sensitivities to thereby increase the detection reliability thereof. Also, the gas sensor has relative long term stability and is economical to build. The gas sensor can read relatively weak signals generated by gas-sensitive layers, for example, without other stronger gas signals interfering with the weak signals.

Abstract: Device for drying a compressed gas which consists of a compressed gas supply (2), two pressure vessels (33 and 34) which are provided with an input (37, respectively) and an output (39, 40 respectively) and a take-up point (32) f or users of compressed dried gas, whereby at least two layers of desiccant (35 and 36) are provided in the pressure vessels (33 and 34), a first layer (35) made of a waterproof desiccant and a second layer (36) which is not necessarily made of a waterproof desiccant respectively, and whereby the pressure vessels (33 and 34) are provided with a second input (41, 42 respectively) for the supply of compressed gas to regenerate desiccant from the first layer (35).

Abstract: Data of a barometric pressure that a barometric pressure sensor outputs, and data of an air volume that an air-volume sensor outputs are input into a system control circuit. The system control circuit is provided with a table storing portion. In the table storing portion, a control table is stored. The control table is formed of a plus supplied-voltage value to fan power set by a barometric pressure value and an air-volume value, and a warning instruction. In a case that the warning instruction is selected based on the barometric pressure value and the air-volume value, the system control circuit turns on a warning-use LED so as to inform a user that a filter is clogged.

Abstract: In one embodiment, a filter cleaning system and method pertain to, during a filter cleaning operation, reversing a flow direction of an inlet fan associated with a filter of the electrical device, the inlet fan being adapted to force air into a housing of the electrical device during normal operation of the electrical device, and reversing a flow direction of an outlet fan adapted to draw air out from the electrical device housing during normal operation of the electrical device so as to increase pressure within the electrical device housing during the filter cleaning operation, wherein the combined action of the reversed inlet fan and the reversed outlet fan purges particulate matter from the filter.

Abstract: A gas generating system (S) has a plurality of product gas generating modules (18) each of which comprises a plurality of molecular sieve beds (bed 1, bed 2) generating a product gas acting in a repetitive cycle with each cycle having a period of the cycle with peak product gas flow (106). A manifold (52) combines the product gas from the plurality of modules (18). The processor (58) generates a control signal that is communicated to the gas generating modules (18) such that the peak product gas flow period (106) of the repetitive cycle of the modules (18) is adjusted in response to the control signal. The processor (58) causes the peak period (106) for the modules (18) to be timed across the repetitive cycles in a controlled distribution.

Abstract: The invention relates to a sorption element for a sorption-supported air conditioning unit for the humidification and/or heating and/or cooling of a room or an airflow. According to the invention, the heat and material transfer may be improved with a reduction in the size of the embodiment, variable amounts of the employed sorption agent and increased resistance to over-saturation, whereby the sorption element is embodied as a tubular piece with a tubular cross-section with a first and an opposing second open end with a first air-permeable grid element (23), defining the first open end and a second air-permeable grid element (14), defining the second open end thereof, whereby the grid elements do not permit a sorption agent to pass.

Abstract: An oxygen enrichment apparatus includes an oxygen enriching unit for generating oxygen-enriched air and a discharge unit for discharging the oxygen-enriched air transferred from the suction unit. The oxygen-enriched air generated by the oxygen enriching unit has an oxygen concentration ranging from about 25% to 35%. The apparatus also includes a suction unit for suctioning the oxygen-enriched air from the oxygen enriching unit and a control unit for controlling the operation of the suction unit. The main body is provided with a display unit for indicating a state that the oxygen-enriched air is being discharged out by the discharge unit. The oxygen enriching unit has at least one oxygen enriching membrane for generating the oxygen-enriched air and a condensed water treating unit is installed at an air passage for guiding the oxygen-enriched air from the oxygen enriching unit to the discharge unit via the suction unit.

Abstract: An exhaust-gas treatment system for treating exhaust gas from a semiconductor manufacturing line, an ICD manufacturing line, etc., is disclosed. The exhaust gas, which is sucked and guided by a blower fan 16, is first introduced and passed through a deodorizing layered active carbon filter 12 acting as a pre-filter. Consequently, the entrained odoriferous substances in a gaseous phase or a vapor phase, or both, are removed. The resulting exhaust gas is then passed thorough a bag-filter element 14 to remove its dust, etc. The bag-filter element 14 cannot be clogged at an early stage, since the odoriferous substances, which are in a gaseous phase or a vapor phase, or both, have had their high adhesive properties removed by the pre-filter 12.

Abstract: Method for controlling an air purifier by using biorhythm including a first step of calculating total number of days (Delta_Time) a person in a room has lived by using the present year/month/date provided thereto or known through an inner counter, and birth year/month/date of the person in the room provided thereto, a second step of representing a physical rhythm state P_state, an esthetic state E_state, and an intellectual state I_state of the person in the room with the Delta_Time, numerically, a third step of setting a physical weight P-weight, an esthetic weight E, and an intellectual weight in correspondence to the P_state, E_state, and I_state, and a fourth step of controlling operation of the air purifier taking at least one of the P_weight, E_weight, and I_weight into account, whereby operating the purifier according to the biorhythm of the person in the room.

Abstract: The present invention provides a timer that starts a time cycle when a filter is placed into a housing. The timer cycle will not reinitiate a new time cycle when the previously used filter is removed from the housing and reinserted into the housing. In one embodiment, the filter timer assembly comprises a filter comprising a filter media surrounded by a filter frame, a housing for supporting the filter, a piercing post connected to the housing moveable between a first resting position and a second position in direct contact with the filter frame, and a timer connected to the piercing post. The piercing post punctures a portion of the filter frame to create an opening in the filter frame. The timer initiates a count when the piercing post is actuated to the second position.

Abstract: A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and to predict remaining life of the air filter. The system resistance is determined using models that approximate the expected operation of the air handling system. The approximation is then compared to actual values to obtain a difference. Once the difference between the approximated value exceeds a threshold value, an alarm is initiated that is indicative of system resistance. The remaining air filter life is then determined by using historically gathered data, or by using a known degradation rate of the air filter. Once the remaining life of the air filter is estimated, replacement can be scheduled that would coincide with other maintenance.

Abstract: The present invention provides device and method for controlling air cleaning operation, in which an air conditioner with an air cleaner is made to clean air effectively proper to different pollutants. The device includes a memory having a plurality of operation modes set and stored therein for controlling operation of a fan proper to characteristics of air pollution sources, first means for selecting one of the plurality of operation modes stored in the memory, and a controlling part for controlling the fan according to a control program of the operation mode. The method includes the steps of selecting one of a plurality of operation modes, changing setting of an operation time period of the selected operation mode, reading the selected operation mode from the memory, and changing the operation time period of the operation mode to the set value, and controlling the fan according to the value of the changed operation time period and the value of the operation mode read from the memory.

Abstract: A method of installing a molecular sieve bed gas enrichment system in a vehicle such as an aircraft. A system controller, a product gas distribution conduit, a high pressure gas supply conduit which extends from a high pressure gas source, and a plurality of molecular sieve beds are installed in the vehicle. Each sieve bed has a first port which delivers product gas through a check valve to an outlet duct. Each sieve bed also includes a second port connected to a valve assembly which is controlled by the system controller to connect the second port either to a gas supply duct during a charging phase or to a venting duct during a venting phase. The outlet duct for each sieve bed is connected to the product gas distribution conduit, and the gas supply duct for each sieve bed is connected to the high pressure gas supply conduit.

Abstract: A filter maintenance monitoring method and a filter maintained thereby are provided, by which re-use of the filter by wash is smoothly and efficiently promoted. The filter includes that loaned from a filter owner to a filter user. The filter used for a predetermined purpose and having clogging of filter cloth by filtering dust in air is recovered to be washed for re-use. History data base stored in a storage portion of a computer is renewed based on wash history of the recovered filter. Then, re-use of the filter is decided based on the renewed history data base. Changes in the filter by damages or deterioration corresponding to the wash history are automatically grasped. Thereby, an efficient filter maintenance is realized.

Abstract: A method of operating a fuel-fired burner of an emission abatement assembly includes supplying a reduced amount of fuel to the fuel-fired burner in response to detection of a burner shutdown request. Such a reduced fuel supply continues for a predetermined time period after which fuel is no longer supplied to the burner. The supply of both combustion air and atomization air, along with spark generation, continues for a period of time after the fuel is shutoff. An emission abatement assembly is also disclosed.

Abstract: A system for removing and purifying a carbon dioxide-containing stream from a batch process tool is provided. A multi-phase contaminated stream containing at least carbon dioxide and one or more co-solvent is removed from a process tool and conveyed to at least one intermediate pressure separator. The contaminant-containing stream is separated into an intermediate pressure carbon dioxide-enriched vapor stream and an intermediate pressure solvent and contaminant-enriched stream in the intermediate pressure separator.

Abstract: An operational state of a system for filtering imaging by-products from an airflow is monitored by comparing a measurement of the flow rate of the airflow to a threshold. Additionally, an operational state of a filtration element is monitored by accumulating a count indicative of the remaining capacity of the filtration element in a memory device coupled to the filtration element.

Abstract: A material return system of a material collection system and appertaining method permits fine material collected in a fine material collector to be returned to a main debris tank by taking advantage of the venturi effect, thus permitting a relatively trouble-free operation of the material collection system.

Abstract: An air improver device and method for air improvement in spaces. The device for air improvement for an air-conditioning system comprises a metering mechanism which carries out a controllable metering of the quantity of an active substance discharged per unit time. The device further includes an absorbent receiving carrier, onto which the active substance discharged by the metering mechanism is metered.

Abstract: A method and a device for controlling the suction, by speed alteration of a blower motor, in a unit for suctioning away thread breakage in a textile machine. A standard speed of the blower motor without speed control is established to achieve the suction, after which the speed of the blower motor is so controlled that a set suction is reached and maintained.

Abstract: A system and method for passive hypoxic training provides a person with a low oxygen (hypoxic) environment. Oxygen sensors automatically monitor and control oxygen levels to maintain the altitude desired. CO2 levels are monitored and CO2 is eliminated so that the air a person breathes is substantially clean and fresh. Exposure to a high altitude environment produces physiological changes in a person's body, which becomes more efficient at absorbing and transporting oxygen. Using the present method and system, athletes obtain the benefits of sleeping at a simulated altitude in the user's own home for six to twelve hours, rather than traditional altitude therapies in which athletes spend two to three weeks at high altitude before an athletic competition to obtain similar benefits. This system allows for “live high train low” altitude training that has been shown in controlled studies to provide superior benefits to “live high train high” training.

Abstract: A purge and trap concentrator and a method for drying a stream of sample gas in a gas analysis instrument. A dryer tube has an inlet that receives a stream of sample gas during a drying interval and receives a stream of dry gas during a regeneration interval. The dryer tube also has an outlet and an interior passageway between the inlet and an outlet. Support material comprising polymer sorbent is placed in the interior passageway and provides a support surface area for a hygroscopic coating comprising lithium chloride. A controller controls a heater to increase the temperature of the dryer tube to between 100 and 300 degrees centigrade during the regeneration interval and controls the heater to decrease the temperature of the dryer tube to below 100 degrees centigrade during the drying interval.

Abstract: A material return system of a material collection system and appertaining method permits fine material collected in a fine material collector to be returned to a main debris tank by taking advantage of the venturi effect, thus permitting a relatively trouble-free operation of the material collection system.

Abstract: The present invention provides device and method for controlling air cleaning operation, in which an air conditioner with an air cleaner is made to clean air effectively proper to different pollutants. The device includes a memory having a plurality of operation modes set and stored therein for controlling operation of a fan proper to characteristics of air pollution sources, first means for selecting one of the plurality of operation modes stored in the memory, and a controlling part for controlling the fan according to a control program of the operation mode. The method includes the steps of selecting one of a plurality of operation modes, changing setting of an operation time period of the selected operation mode, reading the selected operation mode from the memory, and changing the operation time period of the operation mode to the set value, and controlling the fan according to the value of the changed operation time period and the value of the operation mode read from the memory.

Abstract: A method of controlling a plant for processing a gas by adsorption, with N adsorbers R1 to R0 and variable N phase times. The method utilizes a mobile parameter for identifying the operating state of N adsorber which is in each successive phase time of the cycle. For a given phase time, a parameterized sequence (S, S′) of control steps for the plant are defined. A control sequencer of the plant is generated by matching an adsorber (R1 to R0) with each mobile parameter of the parameterized sequence during each phase time of the cycle, causing the succession of phase times of the cycle to be followed at all the adsorbers in operation.