Humidity Sensed Patents (Class 95/10)
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Patent number: 8328904Abstract: An active wheel desiccant dehumidifier is controlled for improved energy savings by modulating operation characteristics including process air flow, reactivation air flow, temperatures, and wheel rotation in response to changing conditions.Type: GrantFiled: May 3, 2010Date of Patent: December 11, 2012Assignees: Bry-Air, Inc., Bry-Air (Asia) Pvt. Ltd.Inventors: William C. Griffiths, Deepak Pahwa, Rajan Sachdev
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Patent number: 8313555Abstract: A method and system for automated control of the operating temperature setpoint of a circulating fluidized bed (CFB) scrubber within a pre-determined range of approach temperatures to the adiabatic saturation temperature of the CFB scrubber exhaust stream to maintain an optimal operating temperature, thereby reducing low temperature sulfuric acid corrosion and deposition of wet materials, and high temperature excess reagent use. A Dewcon® Moisture Analyzer (or equivalent) is connected in the exhaust stream of the CFB scrubber. The Dewcon® Moisture Analyzer transmits adiabatic saturation temperature data of the exhaust stream to the CFB scrubber system controller. Based on pre-programmed parameters, the system controller adjusts the CFB scrubber temperature setpoint.Type: GrantFiled: November 20, 2009Date of Patent: November 20, 2012Assignee: Allied Environmental Solutions, Inc.Inventor: Paul E. Petty
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Patent number: 8221523Abstract: The invention is an apparatus and method for filtering a volume of gas. In one embodiment, the invention is a filtering apparatus having a hollow vessel with inlets and outlets, channels in communication with the inlets and outlets, a form of filter media, and an uninterruptible flow controlling device for regulating the circulation of gas within the apparatus. In another embodiment, the invention is a method incorporating an uninterruptible filtering apparatus to remove evaporated liquid from a volume of gas by passing the gas over a filter media contained within a hollow vessel.Type: GrantFiled: October 13, 2006Date of Patent: July 17, 2012Assignee: Orava Applied Technologies CorporationInventor: John E. Orava
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Patent number: 8211209Abstract: Apparatuses for controlling a humidity level within an enclosed volume storage device and methods for using same. The apparatus, in one embodiment, comprises a container having outer walls defining an inner volume, at least one of the outer walls, preferably an lid wall, having perforations therein. The apparatus further comprises a composition capable of adsorbing and desorbing water and contained in the inner volume of the container. The composition is hydrated to a hydration level less than about 0.13 mL water per gram of the composition. The methods include a step of hydrating the composition in an apparatus of the invention to a hydration level less than about 0.13 mL water per gram of composition.Type: GrantFiled: February 9, 2011Date of Patent: July 3, 2012Inventor: Mark David Neff
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Publication number: 20120141352Abstract: High molecular weight (HMW) gases are separated from an exhaust gas of a combustion source using a blower and an interior vent within the exhaust stack. The interior vent includes a vent wall having a top portion attached to the interior surface of the exhaust stack along the entire inner perimeter of the exhaust stack and a lower portion that extends downward into the exhaust stack to form an annular space or gap between the vent wall and the interior surface of the exhaust stack, and at least one opening in the interior surface of the exhaust stack between the top and bottom portions of the vent wall. The blower creates a tangential flow of the exhaust gas with sufficient centrifugal force to concentrate substantially all of the HMW gases along the inner surface of the exhaust stack. A transfer pipe removes the HMW gases from the interior vent.Type: ApplicationFiled: December 7, 2011Publication date: June 7, 2012Inventors: Jerry Lang, David Scott
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Publication number: 20120132070Abstract: A dew point temperature sensor detects and sends the dew point temperature of the supply air to a dry area, as a supply air dew point temperature, to a controller. The controller has a speed of rotation of the regenerating side fan (the regenerating air flow rate) to control, and determines a control value (the regenerating air flow rate) that causes the supply air dew point temperature to go to a target dew point temperature, and determines a supply air processing pre-cooling coil exit temperature setting value in accordance with this control value (where if the control value is in the direction of reducing the regenerating air flow rate, the supply air processing pre-cooling coil exit temperature setting value is increased). Note that what is controlled is the speed of rotation of the desiccant rotors, or the exit temperatures of the air heated by the hot water coils.Type: ApplicationFiled: November 29, 2011Publication date: May 31, 2012Applicant: YAMATAKE CORPORATIONInventors: Tadahiko Matsuba, Naofumi Ushioda, Yoshitaka Takakura
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Publication number: 20120118143Abstract: An apparatus and method for dehumidifying a desired area using a desiccant dehumidifier. The desiccant dehumidifier of the present invention provides substantial advantages over known desiccant dehumidifiers in terms of simplified manufacture and improved efficiency. The dehumidifier of the present invention includes a single chamber with an intake and an exhaust end, a desiccant, a fan and a heater located in the chamber, and one or more regulators for directing intake and/or output of air in relation to the chamber. This configuration does not require a rotor motor or cycling multichamber apparatus in order to change operation of the apparatus from drying air to reactivating the desiccant.Type: ApplicationFiled: November 17, 2010Publication date: May 17, 2012Inventor: Ronald E. Foreman
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Publication number: 20120111190Abstract: A closed loop air handling system for monitoring and cleaning air from corrosive contaminants. Commonly occurring corrosive elements found in air can react in combination together and with other environmental conditions to increase the propensity for corrosion to occur. The higher corrosive level of air can react with metals causing degradation, wear and often lead to premature failure. This is especially prevalent in environments using forced air convection for cooling, such as data centers. The electronic circuitry is especially vulnerable to such corrosion and requires an environmentally controlled atmosphere with mild corrosiveness for long term reliability. The invention involves circulating the air in a closed loop and monitors and adjusts parameters of active filtration and purification to minimize corrosive agents. The system maintains a milder corrosive environment and better accommodates the use of “free cooling” from outside air for improved energy efficiency and lower carbon emissions.Type: ApplicationFiled: November 8, 2010Publication date: May 10, 2012Inventors: Nader Dariavach, Francis W. French, Jin Liang, Joseph A. Ziehler
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Patent number: 8128728Abstract: A system and process for gas homogenization is disclosed. This has application in the areas of generation of gas and its conversion to electricity in downstream applications. The homogenization system minimizes variance in the gas characteristics (composition, flow, pressure, temperature), thereby rendering a steady stream of gas of consistent quality to the downstream machinery. This homogenization system can be adjusted to optimize the output gas stream for specific end-applications, or to optimize the output gas stream for different input feedstocks. This ensures that overall conversion efficiencies are maximized while keeping the process cost-effective. Such a uniform, steady output gas stream has a wide range of applications in the broad areas of generation of electricity (e.g. using internal combustion engines and combustion turbine engines), chemical synthesis (e.g.Type: GrantFiled: May 7, 2007Date of Patent: March 6, 2012Assignee: Plasco Energy Group, Inc.Inventors: Andreas Tsangaris, Margaret Swain
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Patent number: 8128729Abstract: A method of providing error correction to flow velocity readings of a fluid flowing through a filter arrangement for monitoring the service life of the filter, wherein a filter arrangement, comprising a filter and a sensor device is arranged downstream of the filter, the sensor device including at least one measuring sensor for detecting the flow velocity of the fluid which flows through the filter, and a further measuring sensor for measuring the air humidity of the fluid which flows through the filter. A reading of said second sensor element provides an error correction to the first sensor element.Type: GrantFiled: March 22, 2011Date of Patent: March 6, 2012Assignee: Carl Freudenberg KGInventors: Juergen Guenther, Thomas Stoesser, Heinz Reinhardt, Christopher Klatt
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Publication number: 20120011999Abstract: A method and systems for collecting particulates suspended in a fluid flowing through a duct are provided. The system includes a duct including an inlet opening configured to admit a flow of gas into the duct, during operation the gas including particulate contaminants and moisture and a source of hydrophobizing agent coupled in flow communication with the duct. The system also includes a nozzle configured to channel a flow of the hydrophobizing agent into the flow of gas such that during operation a flow of gas including hydrophobized particulate contaminants and moisture is formed and a filter medium for separating the hydrophobized particles from the flow of gas.Type: ApplicationFiled: July 16, 2010Publication date: January 19, 2012Inventor: Simon Charles Larcombe
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Publication number: 20110277628Abstract: A method of using a modular International Organization for Standardization (ISO) filter house for filtering process fluids is provided. The filter house includes a self-contained rectangular cuboid enclosure having the outside dimension of a standard, transportable ISO shipping container. The filter house has apertures for fluid flow inlet and fluid flow outlet, and a filter element for removing impurities from the fluid flow. The method includes creating one standard filter house design to be used in any multiple to meet various flow requirements. The method further includes creating a common fluid connection between the filter houses and process equipment so that the filter houses operate in parallel. A kit of modular components for filtration of a fluid is also provided. The kit includes an external structure of an ISO shipping container, vanes to direct fluid flow, and a filter element.Type: ApplicationFiled: May 14, 2010Publication date: November 17, 2011Applicant: General Electric CompanyInventors: Anthony Richard Pike, Alun Gareth Williams
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Publication number: 20110259189Abstract: The invention relates to a control device (3) for a compressed air preparation device (1) of a vehicle (2), wherein the control device (3) outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device (1), wherein a compressor (4) feeds compressed air via an air dryer having a desiccant (6a) into a compressed air reservoir (8) in a feed phase, and compressed air is fed out of the compressed air reservoir (8) through the air dryer (6) for drying the desicant (6a) in a regeneration phase. According to the invention, the control device (3) adjusts the regeneration phases depending on a current or future engine load and/or a current or future consumption of compressed air by the vehicle (2). Particularly in coasting phases, excessive drying of the desiccant to a low moisture can occur, in order to save fuel in later travel segments. Route-optimized regeneration of the desiccant as a function of engine load and/or utilization phases is also possible.Type: ApplicationFiled: August 8, 2009Publication date: October 27, 2011Inventors: Heinrich Diekmeyer, Kevin Pendzich, Joachim Reinhardt, Wolfgang Strache
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Publication number: 20110232481Abstract: An air purifier has a housing with an inlet for receiving air and an outlet for exhausting air. The housing provides an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet. Particulate pre-filtration is located within the housing downstream from the air inlet. VOC pre-filtration is located within the housing downstream from the particulate pre-filtration. UV filtration is located within the housing downstream from the VOC pre-filtration. VOC post-filtration is located within the housing downstream from the UV filtration. Final particulate filtration is located within the housing downstream from the VOC post-filtration.Type: ApplicationFiled: March 26, 2010Publication date: September 29, 2011Inventor: Kathryn C. Worrilow
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Patent number: 7992322Abstract: Disclosed herein is a dryer having a heater-integrated intake duct capable of reducing thermal loss and preventing overheating of the dryer. The dryer includes a support panel having a through-hole, an intake duct communicating with the through-hole, a drum into which air flows via the through-hole, a heater disposed inside the intake duct to heat the air flowing into the drum, and a heat exchanging part transferring heat of the heated air into the drum.Type: GrantFiled: November 5, 2008Date of Patent: August 9, 2011Assignee: Daewoo Electronics CorporationInventor: Chang Hoo Kim
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Patent number: 7964017Abstract: A gas flow system and method are provided for controlling the moisture in a gas flow. The system may include a gas source from which gas flows, a processing chamber to which the gas flows, and a gas flow line through which the gas flows from the gas source to the processing chamber. The gas flow line may include a moisture control line section. The moisture control line section includes a pass-through line through which the gas may pass, so as to be exposed to a dryer. The exposure to a dryer may be controlled by a suitable valve. A scrubber is disposed in the gas flow line, the scrubber removing contaminates from the gas in the gas flow. The system may include a moisture sensor disposed in the gas flow, the moisture sensor sensing at least one parameter of the gas and outputting a signal representing the at least parameter to a moisture sensor controller, such that the moisture sensor controller determines the moisture in the gas.Type: GrantFiled: May 5, 2006Date of Patent: June 21, 2011Assignee: General Dynamics Armament and Technical Products, Inc.Inventor: John Petinarides
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Publication number: 20110126704Abstract: Apparatuses for controlling a humidity level within an enclosed volume storage device and methods for using same. The apparatus, in one embodiment, comprises a container having outer walls defining an inner volume, at least one of the outer walls, preferably an lid wall, having perforations therein. The apparatus further comprises a composition capable of adsorbing and desorbing water and contained in the inner volume of the container. The composition is hydrated to a hydration level less than about 0.13 mL water per gram of the composition. The methods include a step of hydrating the composition in an apparatus of the invention to a hydration level less than about 0.13 mL water per gram of composition.Type: ApplicationFiled: February 9, 2011Publication date: June 2, 2011Inventor: Mark David Neff
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Patent number: 7931733Abstract: A method and a system for providing a hypoxic environment inside an enclosed compartment with simultaneous removal of carbon dioxide and moisture produced by occupants; said method and system designed for fire prevention and for simulated altitude training, wellness and hypoxic therapy, including equine and other animal applications.Type: GrantFiled: March 12, 2008Date of Patent: April 26, 2011Inventor: Igor K. Kotliar
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Patent number: 7892327Abstract: Apparatuses for controlling a humidity level within an enclosed volume storage device and methods for using same. The apparatus, in one embodiment, comprises a container having outer walls defining an inner volume, at least one of the outer walls, preferably an lid wall, having perforations therein. The apparatus further comprises a composition capable of adsorbing and desorbing water and contained in the inner volume of the container. The composition is hydrated to a hydration level less than about 0.13 mL water per gram of the composition. The methods include a step of hydrating the composition in an apparatus of the invention to a hydration level less than about 0.13 mL water per gram of composition.Type: GrantFiled: February 20, 2007Date of Patent: February 22, 2011Inventor: Mark David Neff
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Publication number: 20100300284Abstract: A system for controlling moisture content in ambient airflow in a substantially enclosed structure having components. The system includes at least one humidity control apparatus and a plurality of sensors for detecting moisture content in airflow in a plurality of locations of the substantially enclosed structure. The plurality of sensors are located remotely from the at least one humidity control apparatus and are situated in relatively close proximity to the components that the at least one humidity control apparatus is configured to affect. The system also includes a controller configured to receive moisture content levels detected by one or more of the plurality of sensors and to control the at least one humidity control apparatus based upon the detected moisture content levels to vary the moisture content in the ambient airflow around the plurality of locations.Type: ApplicationFiled: December 21, 2007Publication date: December 2, 2010Inventors: Cullen E Bash, Amip J. Shah, Ratnesh Kumar Sharma
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Patent number: 7842115Abstract: An oil separator arrangement for an internal combustion engine incorporates a vortex chamber oil separator with a vortex chamber extending in a longitudinal direction, where the vortex chamber includes a wall extending in a longitudinal direction, a gas inlet, and a gas outlet opening. The gas inlet is disposed tangential to the wall for tangentially blowing-in of blow-by-gas into the vortex chamber, so that at least one gas vortex flow rotating helically along the wall in the longitudinal direction is generated, where at least one further oil separator is connected in parallel to the vortex chamber oil separator. The further oil separator incorporates a separation chamber with an inlet-side spring tongue automatically controlled by the applied blow-by-gas, and a baffle wall disposed downstream the spring tongue.Type: GrantFiled: January 22, 2008Date of Patent: November 30, 2010Assignee: Dichtungstechnik G. Bruss GmbH & Co., KGInventors: Manfred Brand, Artur Knaus, Mathias Reibe
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Patent number: 7833312Abstract: The invention relates to a method for controlling a heatable dehumidifier. The heating of the dehumidifier is to be actuated only when several congruent time windows within which a temperature gradient is greater than or equal to 0 could be determined during a certain period of time, i.e. the heating is to be actuated only when no air flows into the interior of the expansion vessel of the transformer.Type: GrantFiled: January 31, 2007Date of Patent: November 16, 2010Assignee: Maschinenfabrik Reinhausen GmbHInventors: Karsten Viereck, Reiner Brill, Kai Haemel, Alexander Lodig
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Patent number: 7806951Abstract: The present invention is a mobile air contaminant control system that includes a filter assembly enclosed by a mobile outer chamber. The filter assembly is tapered to create a large volume air way downstream from the filter assembly that enables more even air flow and filter loading. One or more exhaust fans pull the air through the filter assembly and exhaust it to the exterior of the chamber. The system is functionally attached to an exterior structure having at least one air intake and housing a work piece. As airborne contaminants are generated from the work piece(s), the control system exhausts them from the exterior structure through the filter assembly and into the external environment.Type: GrantFiled: February 4, 2008Date of Patent: October 5, 2010Assignee: NIF Solutions Corp.Inventor: Timothy P. Zimmerman
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Patent number: 7789937Abstract: Ice-clad machinery and equipment in very cold environments are made more easily recoverable by enclosing the machinery and equipment in an environmentally contained area and introducing desiccant dehumidified air into the contained area to lower the vapor pressure in fostering a “sublimation” process conversion from the solid state of the ice to a gaseous state which can be exhausted without first going through any intermediate liquid state.Type: GrantFiled: September 25, 2007Date of Patent: September 7, 2010Inventor: Spencer W. Hess
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Patent number: 7771508Abstract: A method and system for the treatment of air, in particular for pneumatic brake systems of utility vehicles, is described. The method includes feeding compressed air to a compressed air storage tank through an air dryer, initiating a regeneration of the air dryer using regeneration air from the compressed air storage tank through the air dryer and discharged via a discharge valve, and calculating a theoretically required regeneration air quantity QReg,th. If a presence of condensate is not detected in a region downstream of the air dryer, a regeneration using the theoretically required regeneration air quantity QReg,th, is carried out. If the presence of condensate is detected, a regeneration is carried out using a corrected required regeneration air quantity QReg,corr, the corrected required regeneration air quantity QReg,corr being greater than the theoretically required regeneration air quantity QReg,th.Type: GrantFiled: January 14, 2008Date of Patent: August 10, 2010Assignee: Knorr-Bremse Systeme fuer Nutzfahrzeuge GmbHInventor: Eduard Hilberer
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Publication number: 20090049983Abstract: An energy management system for a membrane separation device, including: a membrane having permeate and non-permeate portions; a membrane housing which encases said membrane; a feed fluid inlet conduit; a purge inlet conduit; a non-permeate product fluid outlet conduit; and, a purge outlet conduit, configured to carry purge fluid out of the membrane dryer; at least one purge inlet flow control valve connected to said purge inlet conduit, a sensor configured to measure the contaminant level of fluids exiting the purge outlet conduit; and, a controller receiving an output signal from the sensor and transmitting a valve control signal to the at least one purge inlet flow control valve.Type: ApplicationFiled: August 22, 2007Publication date: February 26, 2009Inventor: John E. Thelen
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Publication number: 20090000472Abstract: The invention relates to a method for controlling a heatable dehumidifier. The heating of the dehumidifier is to be actuated only when several congruent time windows within which a temperature gradient is greater than or equal to 0 could be determined during a certain period of time, i.e. the heating is to be actuated only when no air flows into the interior of the expansion vessel of the transformer.Type: ApplicationFiled: January 31, 2007Publication date: January 1, 2009Inventors: Karsten Viereck, Reiner Brill, Kai Haemel, Alexander Lodig
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Patent number: 7468091Abstract: The invention relates to a method for dehumidifying air and to an air dehumidifier. To this end, a filter element is provided that is filled with granular material that can be regenerated by baking out. For effecting this baking out, a heating device is provided that is only actuated when both a humidity sensor indicates that a humidity limit value has been exceeded as well as a relative pressure sensor or a comparable technical means indicates that, at the moment, no flow toward the oil expansion tank is recorded.Type: GrantFiled: December 3, 2004Date of Patent: December 23, 2008Assignee: Maschinefabrik Reinhausen GmbHInventors: Karsten Viereck, Dieter Dohnal, Ansgar Hinz, Reiner Brill
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Patent number: 7455721Abstract: An apparatus for humidifying a gas stream includes a humidifier device having at least one membrane permeable to water vapor. The gas stream and a humid gas stream flow through a humidifier device, being separated from one another by the at least one membrane. The apparatus includes at least one bypass line configured to route at least part of one of the gas stream and the humid gas stream so that it does not come into contact with the membrane. In addition a method for humidifying a gas stream, includes flowing the gas stream through a humidifier having a membrane permeable to water vapor, flowing a humid gas stream through the humidifier separated by the membrane, and routing at least a portion of one of the gas stream and the humid gas stream using a bypass line so that it does not come into contact with the membrane, and varying a quantity of the portion so as to set a predetermined dew point in the gas stream.Type: GrantFiled: July 2, 2003Date of Patent: November 25, 2008Assignee: Daimler AGInventors: Gerhard Berger, Jens Intorp, Gerhard Konrad, Arnold Lamm, Sven Schnetzler
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Publication number: 20080173173Abstract: A method and system for the treatment of air, in particular for pneumatic brake systems of utility vehicles, is described. The method includes feeding compressed air to a compressed air storage tank through an air dryer, initiating a regeneration of the air dryer using regeneration air from the compressed air storage tank through the air dryer and discharged via a discharge valve, and calculating a theoretically required regeneration air quantity QReg,th. If a presence of condensate is not detected in a region downstream of the air dryer, a regeneration using the theoretically required regeneration air quantity QReg,th, is carried out. If the presence of condensate is detected, a regeneration is carried out using a corrected required regeneration air quantity QReg,corr, the corrected required regeneration air quantity QReg,corr being greater than the theoretically required regeneration air quantity QReg,th.Type: ApplicationFiled: January 14, 2008Publication date: July 24, 2008Applicant: Knorr-Bremse Systeme Fuer Nutzfahrzeuge GmbHInventor: Eduard Hilberer
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Patent number: 7396383Abstract: A device and method for preventing ingression of contaminants and moisture and for removing moisture from a fluid reservoir, the device comprising a fluid reservoir for supporting a fluid therein, a fluid reservoir opening for allowing an exchanging of air between an interior of the fluid reservoir and the ambient surrounding, and a membrane-based reservoir dryer located in fluid communication with the fluid reservoir, the membrane-based reservoir dryer comprising a source of compressed gas and a membrane dryer for drying the compressed gas to increase the capacity of the compressed gas for absorbing moisture from the fluid in the reservoir.Type: GrantFiled: October 24, 2005Date of Patent: July 8, 2008Inventors: John H. Burban, Michael R. Spearman, David S. Kolstad, Craig J. Cuta
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Publication number: 20080145737Abstract: A device or system for operating one or more electrochemical cells, such as a rechargeable fuel cell, is provided. A plurality of subsystems include a humidity level control subsystem, a reagent gas delivery subsystem, and a gas scrubbing subsystem. A method for operating the device or system is also provided.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Applicant: General Electric CompanyInventors: Jun Cai, Chang Wei, Qunjian Huang, Jinghua Liu, Hai Yang, Shengxian Wang, Rihua Xiong, Andrew Philip Shapiro, Richard Louis Hart
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Patent number: 7374604Abstract: The present invention discloses a system for flue gas treatment, wherein the provided system comprises a quench module, a first control module, a filter collecting module, a wet scribing module and a regeneration module. In this system, parts of the particles contained in flue gas are removed in the quench module and the wet scribing module by a first scrubbing solution, and then in wet scribing module a second scrubbing liquid containing particles is formed. Next, the second scrubbing solution is treated in the regeneration module to form a third scrubbing solution, wherein the third scrubbing solution is then fed back to the quench module and/or the wet scrubbing module to substitute the first scrubbing solution for repeating what originally performed via the first scrubbing solution. Furthermore, this invention discloses a method for flue gas treatment.Type: GrantFiled: December 7, 2004Date of Patent: May 20, 2008Assignee: Chung Yuan Christian UniversityInventor: Chien-Song Chyang
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Publication number: 20080110337Abstract: A saturation level of moisture and/or other contaminants is determined in a desiccant material by determining an electrical parameter across the desiccant material. An air dryer includes a housing, a desiccant in the housing, and an electrical contact in the desiccant. A level of at least one of moisture and other contaminants is determined as a function of an electrical parameter between two electrical contacts of dissimilar materials that electrically contact the desiccant. Alternatively, the level of at least one of moisture and other contaminants is determined as a function of an amount of the reflected light received by the optical sensor from the desiccant.Type: ApplicationFiled: November 9, 2006Publication date: May 15, 2008Applicant: Bendix Commercial Vehicle Systems LLCInventors: Fred W. Hoffman, Leonard A. Quinn, Randall W. Nichols, David J. Taneyhill, Justin R. Miller
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Patent number: 7357831Abstract: An apparatus for reducing a relative humidity of air inside an enclosed space includes a portable outside air heat exchanger unit having a fan operative to create an air stream by drawing outside air from an intake and discharging the air stream through an outlet inside the enclosed space, and a temperature adjusting element located in the air stream. A heating source supplies heat energy to the temperature adjusting element in response to directions from a heat controller. A humidity sensor is operative to sense the relative humidity of the air in a sensing location and to send a humidity signal to the heat controller to change the amount of heat energy supplied to the temperature adjusting element in response to the humidity signal. HEPA filters and ultra-violet lights can shine on the air stream to kill mold spores and the like.Type: GrantFiled: January 6, 2004Date of Patent: April 15, 2008Assignee: Dryair Inc.Inventors: Larry Dancey, Claude Bourgault
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Patent number: 7332015Abstract: A dehydrator breather is provided that includes automatic purging of accumulated moisture by detecting absorbed moisture in the breather, and closing an intake air channel, while opening an exit moisture channel. Adjustment of a default time-based purging cycle is adjusted to account for fluctuations in the detected moisture. An external communication capability is provided to enable off-site monitoring of the breather or the tank the breather is attached to.Type: GrantFiled: December 23, 2004Date of Patent: February 19, 2008Assignee: Waukesha Electric Systems, IncInventors: Thomas M. Golner, Shirish P. Mehta
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Patent number: 7309376Abstract: The invention relates to a process for producing respirable air comprising the following stages: treatment of compressed air comprising an air-drying operation; and rehumidification of the treated dry air. According to the invention, the rehumidification stage of the treated dry air comprises an operation of controlled distribution of the treated dry air on the one hand in a rehumidification line (24), and on the other hand in a dry line (22). The invention also relates to an installation (1) for utilising such a process. Application to the area of nuclear installation dismantling.Type: GrantFiled: February 5, 2003Date of Patent: December 18, 2007Assignees: Compagnie Generale des Matieres Nucleaires, Commissariat a l'Energie AtomiqueInventors: Didier Barre, Roland Baudet
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Patent number: 7264649Abstract: The invention provides a humidity control system (HCS) to control indoor humidity within a specified range so as to reduce indoor house-dust mite allergen levels. The invention also provides a hydrogel absorber/desorber for reversibly absorbing water vapor from air releasing water vapor to air. The invention employs a reversible hydrogel desiccant as the active element for absorption and desorption of water, thus rendering the HCS more effective and energy-efficient than traditional humidification/dehumidification systems. The HCS of the invention treats indoor air by drawing fresh air in from outside and adjusting the humidity of the air-stream. In certain embodiments, fresh air is drawn in from the outside and mixed with recirculated air. The HCS uses a controller to introduce fresh air into the interior space and to control air circulation within it. Relative humidity is monitored remotely throughout the interior space using wired or wireless sensors.Type: GrantFiled: July 23, 2004Date of Patent: September 4, 2007Assignee: Advanced Design Consulting USA, Inc.Inventors: Eric Arthur Johnson, Joseph Duane Kulesza
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Patent number: 7153341Abstract: A process for controlling the volume of dry air, dried to a predetermined degree of dryness, from a sweep manifold of an air dryer system, flowing over a plurality of gas/liquid fluid separating membranes, comprising: diverting a predetermined volume of dried air to the manifold; sensing one of the flow volume and humidity values of the remainder of the dried air or the pressure differential within the system; and utilizing one of the differential pressure to control the predetermined volume of dried air and utilizing a controller for achieving the predetermined degree of dryness by controlling at least one solenoid valve which, in turn, controls the flow volume of the predetermined volume of dried air diverted to the manifold.Type: GrantFiled: February 20, 2004Date of Patent: December 26, 2006Assignee: Parker-Hannifin CorporationInventors: Dean Hoyt, Douglas Moore
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Patent number: 7097689Abstract: A process and system for purifying an impure gas to produce a purified gas in a gas purification system and protecting the system from damage by a) passing a portion of a first gas stream into a reactor vessel, which exits as a second purified gas stream; b) combining a portion of the second purified gas stream with another portion of the first gas stream to form a combined gas stream; and c) passing the combined gas stream into a sensing device to regulate the flow of the first and second gas streams into the reactor vessel.Type: GrantFiled: June 20, 2002Date of Patent: August 29, 2006Assignee: Praxair Technology, Inc.Inventors: John Fredric Billingham, Jerry Michael Mahl
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Patent number: 6964808Abstract: A wall is formed by adding a predetermined amount of binding agent and water to volcanic ash sediment, which is comprised of mineral silicate including at least silicic acid and aluminum oxide, kneading them, and applying to an arbitrary plane. Through a natural reaction of positive ions included within mineral silicate and moisture included within the atmospheric air, thereby exchanging ions, minus ions are generated on an application plane. The amount of minus ions generated is, in a unit volume, between three and six times as many as that of the minus ions generally included in the atmospheric air. The combination of this application plane and humidity control apparatus is used as a minus ion generation system through adjustment of amount of moisture included within the atmospheric air so as to control the ion exchanging rate. In the case where said volcanic ash sediment includes titanium oxide, it reacts with hydrogen or oxygen generating active oxygen species or oxygen free radical.Type: GrantFiled: June 26, 2001Date of Patent: November 15, 2005Assignee: Takachiho CorporationInventor: Masahiro Shintome
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Patent number: 6932856Abstract: An air or oil dryer module is provided to remove or reduce moisture from a lubricant using a pressurized air supply to inject dry air into a lubricant sump. As the “dry air” or air with a minimized moisture content, gathers moisture from the lubricant a relative humidity sensor detects an increase in air moisture. At a pre-determined relative humidity level, a fresh supply of air is added into the lubricant sump, purging the higher relative humidity level air from the sump. A method of reducing moisture content of a lubricant contained in an enclosed space is also disclosed and is performed by agitating the lubricant, providing a humidity sensor in fluid communication with the enclosed space, measuring the humidity of the enclosed space and comparing the humidity measurement with a pre-selected humidity level, introducing dry air into the enclosed space if the humidity level equals or exceeds the pre-selected humidity level, until the saturated humidity level is less than the pre-selected humidity level.Type: GrantFiled: July 17, 2002Date of Patent: August 23, 2005Assignee: Trico Mfg. Corp.Inventor: Brad Rake
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Patent number: 6863711Abstract: A system for recovering water from the atmosphere includes water sorbent assembly composed of a water adsorbent material and a heat exchanger. The water adsorbent material traps water present within the air drawn through the sorbent assembly. Once the sorbent assembly is fully saturated, exhaust gases generated from a power plant are routed through a heat exchanger in thermal contact with the water adsorbent material to remove water within the sorbent assembly into a condenser, and from the condenser to a water storage container.Type: GrantFiled: December 6, 2002Date of Patent: March 8, 2005Assignee: Hamilton SundstrandInventors: Stephen Tongue, Douglas Snowdon
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Patent number: 6767390Abstract: A method to control the performance of desiccant dryers is disclosed that senses multiple variables and optimizes the regeneration cycle to deliver the gas at the desired dew point. The length of the stripping step is reduced or eliminated depending on the desired set point and the operating conditions of the compression system. The control system has the capability to switch to high efficiency mode of operation should the dew point set point be changed. The savings come from not purging as much or any gas during stripping should the system requirements be only to meet the ISA standards for instrument air, despite the system capability of delivering far dryer air.Type: GrantFiled: June 25, 2002Date of Patent: July 27, 2004Assignee: Cooper Turbocompressor, Inc.Inventors: John R. Battershell, Charles Impastato, Alfredo R. Longo
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Patent number: 6723151Abstract: A gas removal filter has an ion exchanger for adsorbing a gas and at least a pair of electric resistance measuring electrodes disposed on the ion exchanger. By measuring a change in the electric resistance between at least the pair of electric resistance measuring electrodes disposed on the ion exchanger, it is possible to estimate an ion exchange group consumption ratio of the ion exchanger. The ion exchange group consumption ratio of the ion exchanger can be detected in a short period of time, and a remaining adsorption capability of the ion exchanger can be known with ease.Type: GrantFiled: September 26, 2002Date of Patent: April 20, 2004Assignee: Ebara CorporationInventors: Akira Tanaka, Yoko Suzuki, Takashi Kishi
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Patent number: 6712877Abstract: An oxygen concentrator system includes at least one oxygen concentrator sub-system and a plenum subsystem. The at least one oxygen concentrator sub-system produces oxygen-enriched air which is outputted to both the oxygen concentrator system output and to a plenum chamber within the plenum subsystem. The plenum chamber is trickle charged with the oxygen-enriched air when the at least one oxygen concentrator sub-system produces an excess amount of oxygen-enriched air. Should the demand for oxygen-enriched air exceed the capability of the at least one oxygen concentrator sub-system, additional oxygen-enriched air is provided by the plenum chamber until such time that the capability of the at least one oxygen concentrator sub-system exceeds the demand of oxygen-enriched air. At that time, oxygen-enriched air is no longer provided by the plenum chamber but rather the plenum chamber is again trickle charged.Type: GrantFiled: August 27, 2002Date of Patent: March 30, 2004Assignee: Litton Systems, Inc.Inventors: Tuan Q. Cao, Gary Byrd, Lyle Berkenbosch, Craig Schledewitz
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Patent number: 6712876Abstract: An oxygen concentrator system with altitude compensation includes at least one oxygen concentrator sub-system and a plenum subsystem. The at least one oxygen concentrator sub-system produces oxygen enriched product which is outputted to both the oxygen concentrator system output and to a plenum chamber within the plenum subsystem. The plenum chamber is trickle charged with the oxygen enriched product when the at least one oxygen concentrator sub-system produces an excess amount of oxygen enriched product. Should the demand for oxygen enriched product exceed the capability of the at least one oxygen concentrator sub-system, additional oxygen enriched product is provided by the plenum chamber until such time that the capability of the at least one oxygen concentrator sub-system exceeds the demand for oxygen enriched product. At that time, oxygen enriched product is no longer provided by the plenum chamber but rather the plenum chamber is again trickle charged.Type: GrantFiled: August 27, 2002Date of Patent: March 30, 2004Assignee: Litton Systems, Inc.Inventors: Tuan Q. Cao, Gary Byrd
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Publication number: 20030205129Abstract: A system and a method for controlling or reducing moisture levels in building cavities. Desiccant is used in combination with various containers for placing the desiccant into building cavities to control levels of moisture and mold in the cavities.Type: ApplicationFiled: July 12, 2002Publication date: November 6, 2003Inventors: Shane A. Kretsinger, Jack Lee Meyer
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Patent number: 6599347Abstract: A method of operating a thermal swing adsorption process by determining a parameter relating to the water content of a feed gas, selecting process conditions for regeneration of the adsorbent in the thermal swing adsorption process based on the parameter and modifying the regeneration process conditions to accord with the selected process conditions for regeneration is disclosed. Apparatus for effecting this adsorption method and apparatus in which regeneration conditions are modified based on the actual ambient water content of the feed gas are also disclosed.Type: GrantFiled: January 24, 2002Date of Patent: July 29, 2003Assignee: Air Products and Chemicals, Inc.Inventors: Mohammad Ali Kalbassi, Nasim Hassan Malik
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Patent number: RE42058Abstract: A dehydrator breather is provided that includes automatic purging of accumulated moisture by detecting absorbed moisture in the breather, and closing an intake air channel, while opening an exit moisture channel. Adjustment of a default time-based purging cycle is adjusted to account for fluctuations in the detected moisture. An external communication capability is provided to enable off-site monitoring of the breather or the tank the breather is attached to.Type: GrantFiled: February 19, 2010Date of Patent: January 25, 2011Assignee: Waukesha Electric Systems, Inc.Inventors: Thomas M. Golner, Shirish P. Mehta