Atmosphere And Sorbent Contacting Type Patents (Class 62/271)
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Patent number: 6960236Abstract: A clean room has a cleaned air feeding apparatus 1 having a rotor 2 adsorbing gaseous chemical substances to an adsorbing part 16 and desorbing the adsorbed gaseous chemical substances at the regenerating part 17. Drive 4 drives the rotor 2 to the adsorbing part 16 and the regenerating part 17. The gaseous chemical substances contained in the air are adsorbed, for removal, to the adsorbing part 16, and cleaned air is fed into a clean room main body 32. Heated regenerated air is fed to the regenerating part 17 so as to desorb the adsorbed gaseous chemical substances from the air.Type: GrantFiled: November 6, 2000Date of Patent: November 1, 2005Assignee: Daikin Industries, Ltd.Inventors: Yoshio Tamura, Yasuyoshi Shinoda
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Patent number: 6945065Abstract: Cooling/heating system of air conditioner including a duct having a first passage for drawing external air, and a second passage for drawing room air, the second passage having a part crossed with the first passage, a regenerative heat exchanger having first and second flow passages in the crossed part of the first and second passages for indirect heat exchange between the external air and the room air, a case connected to the first and second passages of the duct having first and second outlets for drawing/discharging external and room air, first and second fans for drawing in the external air and the room air into the case through the first and second passages, and discharging the external air and the room air through the first and second outlets, and first and second heat exchangers for heat exchange with the external air and the room air discharge through the first and second outlets, thereby preventing contamination and dried room air and reducing heat loss to permit cooling/heating even with small amounType: GrantFiled: October 30, 2003Date of Patent: September 20, 2005Assignee: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Patent number: 6935131Abstract: An indoor facility provided with a liquid refrigerant dehumidifier coil connected with the main refrigeration coils in a secondary refrigerant loop and a compressor waste heat coil coupled with the primary refrigerant loop and heating a desiccant wheel for removing further humidity from the process air stream.Type: GrantFiled: September 9, 2004Date of Patent: August 30, 2005Inventor: Tom Backman
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Patent number: 6918263Abstract: Disclosed is an air conditioning system including a duct having an intake passage through which outdoor air is induced and a discharge passage through which indoor air is discharged, suction and discharging fans respectively installed in the intake and discharge passages, a dehumidifier having a desiccant wheel rotatably mounted on an opening of the partition, a regenerating heater for heating air induced into the dehumidifier, a regenerating heat exchanger provided on the intake and discharge passages in the vicinity of an indoor side with reference to the dehumidifier to heat-exchange air flowing along the intake passage with air flowing along the discharge passage, and a heat pump provided on the duct to heat-exchange outdoor air that has passed through the regenerating heat exchanger and discharging the heat-exchanged air to an indoor space.Type: GrantFiled: September 24, 2003Date of Patent: July 19, 2005Assignee: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Patent number: 6915655Abstract: Air conditioning system including a duct having a suction passage for drawing external air and a discharge passage for discharging room air, the suction passage and the discharge passage being split with a split plate, a suction fan and a discharge fan in the suction passage and the discharge passage, respectively, a dehumidifier having a desiccant wheel rotatably mounted in an opening in a split plate of the duct to cross, and exposed to the suction passage and the discharge passage, a regenerative heater in the discharge passage of the duct adjacent to air inlet of the dehumidifier for heating the air introduced into the dehumidifier, a regenerative heat exchanger mounted both in the suction passage and the discharge passage on a room side with reference to the dehumidifier for making heat exchange of the air flowing in the suction passage and the air flowing in the discharge passage, and a heat pump having a first heat exchanger in the discharge passage between the dehumidifier and the regenerative heat exType: GrantFiled: September 24, 2003Date of Patent: July 12, 2005Assignee: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Patent number: 6889750Abstract: An apparatus for ventilation systems which include an element for the transfer of heat from warm exhaust air (taken from inside a building) to cooler exterior fresh air which is drawn into the building. During a defrost cycle, interior air may circulate through both of the fresh air and exhaust air paths for delivery back into the building, i.e. the warm interior air, used as defrost air, may be able to circulate from the interior of the building into the ventilation apparatus and back to the interior of the building. The apparatus can thus use interior air as defrost air while diminishing or avoiding the creation of a negative air pressure in the building.Type: GrantFiled: January 8, 2002Date of Patent: May 10, 2005Assignee: Venmar Ventilation Inc.Inventors: Frederic Lagace, Jean-Francois Grondin, Pierre Cusson, Michel Julien, Daniel Marcoux
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Patent number: 6854279Abstract: The present invention describes methods and apparatus for controlling the humidity of air supplied to cooling coils on a gas turbine powered ship through a dynamic desiccation system. The system passes supply air through a desiccant wheel, which dries and concomitantly heats the supply air. This supply air stream is then passed through a rotatable thermal wheel, wherein heat is transferred from the dry supply air to an exhaust-air mixture, thereby conditioning the supply air for delivery and circulation to a plurality of cooling-coil units in a plurality of compartments. The exhaust air from the compartments is first mixed with some of the treated supply air to lower the absolute humidity to a value needed for effective regeneration of the desiccant wheel. An evaporative cooler then conditions the exhaust-air mixture for effective cooling of the supply air in the thermal rotor, which also serves as an air preheater for desiccant regeneration.Type: GrantFiled: June 9, 2003Date of Patent: February 15, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventors: Anthony J. Digiovanni, Denis J. Colahan, Donald T. Knauss
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Patent number: 6848265Abstract: An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.Type: GrantFiled: April 24, 2003Date of Patent: February 1, 2005Assignee: Ail Research, Inc.Inventors: Andrew Lowenstein, Jeffrey Miller, Peter Gruendeman, Michael DaSilva
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Publication number: 20040261440Abstract: An air-conditioning system for conditioning air by removing heat and moisture from the air and transferring it to the environment, comprising: a dehumidifier (14) that produces dehumidified air and utilizes a liquid desiccant for drying; at least one non-desiccant fluid at a temperature lower than the temperature of the liquid desiccant; and at least one heat exchanger (20) in which the liquid desiccant is cooled by the at least one fluid.Type: ApplicationFiled: June 24, 2004Publication date: December 30, 2004Inventors: Mordechai Forkosh, Dan Forkosh, Tomy Forkosh
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Publication number: 20040262408Abstract: A humidity control apparatus is provided with two adsorbing elements (81, 82). The humidity control apparatus alternately repeats a first operation for dehumidifying air in the first adsorbing element (81) while regenerating the second adsorbing element (82) and a second operation for dehumidifying air in the second adsorbing element (82) while regenerating the first adsorbing element (81). The second air taken into the humidity control apparatus is formed of a mixture of room air and outside air. In the humidity control apparatus, a mixture ratio between the room air and the outside air in the second air is variable.Type: ApplicationFiled: November 3, 2003Publication date: December 30, 2004Inventors: Tomohiro Yabu, Yoshimas Kikuchi
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Publication number: 20040250557Abstract: An air conditioning apparatus is provided with an adsorption element having a humidity adjusting side passageway configured to adsorb and desorb moisture by passage of adsorption air or regeneration air and a cooling side passageway through which cooling air passes so that the adsorption air is cooled by absorption of heat of adsorption generated during the adsorption in the humidity adjusting side passageway. In the air conditioning apparatus, air is humidified or dehumidified in the humidity adjusting side passageway of the adsorption element and is supplied to an indoor space. In order to achieve improvements in the cooling efficiency when cooling adsorption air by the use of cooling air in the cooling side passageway, room air, conditioned air, or mixed air which is a combination of room air and outdoor air is used as cooling air which is forced to flow through the adsorption element.Type: ApplicationFiled: April 28, 2004Publication date: December 16, 2004Inventors: Tomohiro Yabu, Yoshimasa Kikuchi
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Patent number: 6829900Abstract: A gas-flow heat exchanger comprising a set of parallel, spaced, heat-conductive areas providing between them a stack of pockets each containing parallel baffles which define a platen of passageways guiding the gas-flow path through the pocket between inlet and outlet openings. The openings being arranged in four parallel lines at the sides of the stack, two of the lines respectively containing the inlet and outlet openings associated with the gas flow paths of alternative pockets. The remaining two lines respectively containing the inlet and outlet openings associated with the remaining pockets. Each pocket containing a removable frame formed with the openings provided at the ends of the gas flow path through it and supporting within the frame the parallel baffles which divide the gas-flow path into the platen of passageways. All of the passageways provide a substantially equal dwell time to gas passing therethrough.Type: GrantFiled: February 20, 2002Date of Patent: December 14, 2004Assignee: Air-Change Pty LimitedInventor: John Francis Urch
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Publication number: 20040244398Abstract: The present invention is directed to a water making device that collects the moisture contained in the atmosphere and condenses it into high purity water. In one embodiment, moist air entering the water making/water cooling system flows across an air filter, then a precooler heat exchanger (where the air stream is cooled to or close to its dew point) and then a water extraction heat exchanger, where the air stream is cooled further and water is extracted. The water that leaves water extraction heat exchanger is collected in a water collection device and passes from there through a primary water filter into a water storage tank. The air stream then passes across a reheat heat exchanger and exhausted to the outside.Type: ApplicationFiled: February 5, 2004Publication date: December 9, 2004Inventors: Reinhard K. Radermacher, Hisham Fawzi
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Publication number: 20040237540Abstract: A co-generation system and a dehumidification air-conditioner, which generates electricity and provides highly efficient air-conditioning by reducing the latent heat load of the air-conditioner. Exhaust gas from either a turbine or an internal combustion engine heats air for desorption of adsorbed moisture from a humidity rotor. The humidity rotor has a sound adsorption material to attenuate high frequency noise coming from the exhaust outlet of the co-generation system.Type: ApplicationFiled: October 17, 2003Publication date: December 2, 2004Applicant: SEIBU GIKEN CO, LTD.Inventors: Hiroshi Okano, Yukito Kawakami, Mototsugu Nagamatsu
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Publication number: 20040211207Abstract: A dehumidification method comprising: providing a liquid desiccant (20) at a first location (18); removing moisture from the liquid desiccant at the first location to a first source of air (22, 24); providing liquid desiccant (20′) at a second location (18′), said liquid desiccant at said second location (18′) being in fluid communication with the liquid desiccant at the first location (18); absorbing moisture by the liquid desiccant at the second location from a second source of air (22′, 24′); and transferring moisture from the first location (18) to the second location (18′) substantially only by diffusion and gravity.Type: ApplicationFiled: June 4, 2004Publication date: October 28, 2004Inventors: Mordechai Forkosh, Dan Forkosh, Tomy Forkosh
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Publication number: 20040206094Abstract: A dehumidifying air-conditioning apparatus comprises a pressurizer (4) for raising a pressure of a refrigerant, a condenser (5) for condensing the refrigerant to heat a high-temperature heat source fluid, and an evaporator (1) for evaporating the refrigerant to cool process air to a temperature lower than its dew point. A first heat exchanging portion (21) is disposed in a refrigerant path between the condenser (5) and the evaporator (1) for evaporating the refrigerant under an intermediate pressure between the condensing pressure of the condenser (5) and the evaporating pressure of the evaporator (1) to cool the process air by evaporation of the refrigerant under the intermediate pressure.Type: ApplicationFiled: May 26, 2004Publication date: October 21, 2004Inventor: Kensaku Maeda
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Publication number: 20040194490Abstract: Disclosed is a combined ventilating and air conditioning system, comprising: a first air duct for guiding outdoor air to the indoor spaces, the first air duct being capable of opening and closing; a second air duct for guiding indoor air to outdoors, wherein the second air duct is capable of opening and closing and installed in such a manner that part of the second air duct intersects with the first air duct; a third air duct for guiding the indoor air to the outdoors, the third air duct being capable of opening and closing; a regenerative heat exchanger, being provided in an intersection between the first and second air ducts, for exchanging heat between the indoor air and the outdoor air passing through the intersection; and blowing fans for controlling airflows, being provided in the first air duct, in the second air duct, and in the third air duct, respectively. The compressor mounted on the air conditioner is provided in the third air duct.Type: ApplicationFiled: October 28, 2003Publication date: October 7, 2004Applicant: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Patent number: 6799430Abstract: A method for reclamation of atmospheric water uses a water reclamation chamber (1) with water reclamation cells (2) and variable high-performance blowers (3). In this occurs by means of cooling collectors (6) during the nighttime the cooling of a coolant stored in a cooling resorvoir (7), and during the daytime operation by means of solar collectors (8) occurs the heating of a further fluid stored in a heat reservoir, so that the coolant that is cooled during the night for the purpose of water reclamation cools by day and/or night the cooling registers through which air flows. At these cooling registers, the air is dehumidified so that the heat-accumulating fluid by day and/or by night is used for the generation of energy for the operation of the equipment and/or for the extraction of water.Type: GrantFiled: May 5, 2003Date of Patent: October 5, 2004Inventor: Walter Georg Steiner
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Publication number: 20040168462Abstract: The invention provides an air conditioning system for an environment (2) within an enclosure (4), the system including an air/water cooling tower (6) in fluid flow communication, via a heat exchanger (10), with a brine/air heat exchanger (8), and a brine regenerator (16) in fluid flow communication with the brine/air heat exchanger (8), the brine/air heat exchanger (8) having an air outlet to the enclosure (4) and an air inlet.Type: ApplicationFiled: December 18, 2003Publication date: September 2, 2004Inventor: Gad Assaf
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Patent number: 6772534Abstract: An apparatus for removing moisture from air which includes a moist air inlet area, a dry air outlet area, a regeneration air inlet area, a regeneration air outlet area and a desiccant medium. A drying fan is provided for drawing the moist air through the moist air inlet area, through the desiccant, as to exit the unit through the dry air outlet area. A regeneration fan is provided for drawing regeneration air through the regeneration air inlet area, through the desiccant medium, so as to exit the unit through the regeneration air outlet area.Type: GrantFiled: November 4, 2002Date of Patent: August 10, 2004Assignee: Bel-Art Products, Inc.Inventors: Francis Gomes, Paul Thom, David Landsberger
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Publication number: 20040134211Abstract: Air conditioning system including a duct having a suction passage for drawing external air and a discharge passage for discharging room air, the suction passage and the discharge passage being split with a split plate, a suction fan and a discharge fan in the suction passage and the discharge passage, respectively, a dehumidifier having a desiccant wheel rotatably mounted in an opening in a split plate of the duct to cross, and exposed to the suction passage and the discharge passage, a regenerative heater in the discharge passage of the duct adjacent to air inlet of the dehumidifier for heating the air introduced into the dehumidifier, a regenerative heat exchanger mounted both in the suction passage and the discharge passage on a room side with reference to the dehumidifier for making heat exchange of the air flowing in the suction passage and the air flowing in the discharge passage, and a heat pump having a first heat exchanger in the discharge passage between the dehumidifier and the regenerative heat exType: ApplicationFiled: September 24, 2003Publication date: July 15, 2004Applicant: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Publication number: 20040134210Abstract: An adsorption element (81, 82) is formed by an alternating lamination of flat plate members (83) and corrugated plate members (84). Each flat plate member (83) is a given rectangle of L1/L2=2. In the adsorption element (81, 82), humidity adjusting side passageways (85) are opened on side surfaces of the adsorption element (81, 82) which are located on the longer-side side of the flat plate members (83). Additionally, cooling side passageways (86) are opened on side surfaces of the adsorption element (81, 82) which are located on the shorter-side side of the flat plate members (83).Type: ApplicationFiled: November 4, 2003Publication date: July 15, 2004Inventors: Tomohiro Yabu, Guannan Xi, Akira Kamino
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Publication number: 20040134212Abstract: Cooling/heating system of air conditioner including a duct having a first passage for drawing external air, and a second passage for drawing room air, the second passage having a part crossed with the first passage, a regenerative heat exchanger having first and second flow passages in the crossed part of the first and second passages for indirect heat exchange between the external air and the room air, a case connected to the first and second passages of the duct having first and second outlets for drawing/discharging external and room air, first and second fans for drawing in the external air and the room air into the case through the first and second passages, and discharging the external air and the room air through the first and second outlets, and first and second heat exchangers for heat exchange with the external air and the room air discharge through the first and second outlets, thereby preventing contamination and dried room air and reducing heat loss to permit cooling/heating even with small amounType: ApplicationFiled: October 30, 2003Publication date: July 15, 2004Applicant: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Publication number: 20040129011Abstract: Disclosed is an air conditioning apparatus which is provided with two adsorption elements (81, 82). The air conditioning apparatus repeats in alternation an operation in which the second adsorption element (82) is regenerated and, at the same time, air is dehumidified by the first adsorption element (81), and an operation in which the first adsorption element (81) is regenerated and, at same time, air is dehumidified by the second adsorption element (82). Additionally, the air conditioning apparatus includes a refrigerant circuit. The refrigerant circuit performs a refrigeration cycle in which a regenerative heat exchanger (92) operates as a condenser and a first cooling heat exchanger (93) or a second cooling heat exchanger (94) operates as an evaporator. For example, air, which has robbed heat of adsorption in the first adsorption element (81), is further heated by the regenerative heat exchanger (92) and is introduced into the second adsorption element (82).Type: ApplicationFiled: October 22, 2003Publication date: July 8, 2004Inventors: Yoshimasa Kikuchi, Tomohiro Yabu, Akira Kamino
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Patent number: 6758048Abstract: A system for conditioning air. The system may include a turbine for generating waste heat and a desiccant system for removing humidity from the air. The desiccant system may be in communication with the turbine so as to use the waste heat for regeneration. The system also may include a cooling system so as to cool the air after the air passes through the desiccant system.Type: GrantFiled: January 27, 2003Date of Patent: July 6, 2004Assignee: General Electric CompanyInventor: Li Ni
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Publication number: 20040123615Abstract: Disclosed is an air conditioning apparatus with two adsorption elements (81, 82). The air conditioning apparatus repeatedly alternately performs a first operation in which air is dehumidified by the first adsorption element (81) simultaneously with regeneration of the second adsorption element (82) and a second operation in which air is dehumidified by the second adsorption element (82) simultaneously with regeneration of the first adsorption element (81). At the time of switching between these operations, only the flow path of air is changed, with the adsorption elements (81, 82) remaining stationary. The air conditioning apparatus includes a refrigerant circuit. The refrigerant circuit performs a refrigeration cycle in which a regenerative heat exchanger (92) operates as a condenser and either one of first and second cooling heat exchangers (93, 94) operates as an evaporator.Type: ApplicationFiled: October 22, 2003Publication date: July 1, 2004Inventor: Tomohiro Yabu
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Publication number: 20040123616Abstract: Disclosed is an air conditioning system including a duct having an intake passage through which outdoor air is induced and a discharge passage through which indoor air is discharged, suction and discharging fans respectively installed in the intake and discharge passages, a dehumidifier having a desiccant wheel rotatably mounted on an opening of the partition, a regenerating heater for heating air induced into the dehumidifier, a regenerating heat exchanger provided on the intake and discharge passages in the vicinity of an indoor side with reference to the dehumidifier to heat-exchange air flowing along the intake passage with air flowing along the discharge passage, and a heat pump provided on the duct to heat-exchange outdoor air that has passed through the regenerating heat exchanger and discharging the heat-exchanged air to an indoor space.Type: ApplicationFiled: September 24, 2003Publication date: July 1, 2004Applicant: LG Electronics Inc.Inventors: Won Hee Lee, Yoon Jei Hwang, Chan Ho Song
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Patent number: 6751964Abstract: The present invention provides an apparatus for dehumidifying air supplied to an enclosed space by an air conditioning unit. The apparatus includes a partition separating the interior of the housing into a supply portion and a regeneration portion. The supply portion has an inlet for receiving supply air from the air conditioning unit and an outlet for supplying air to the enclosed space. A regeneration fan creates the regeneration air stream. The apparatus includes an active desiccant wheel positioned such that a portion of the wheel extends into the supply portion and a portion of the wheel extends into the regeneration portion, so that the wheel can rotate through the supply air stream and the regeneration air stream to dehumidify the supply air stream. A heater warms the regeneration air stream as necessary to regenerate the desiccant wheel. The invention also comprises a hybrid system that combines air conditioning and dehumidifying components into a single integrated unit.Type: GrantFiled: June 28, 2002Date of Patent: June 22, 2004Inventor: John C. Fischer
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Publication number: 20040112077Abstract: Apparatus for conditioning air comprising: a quantity of liquid desiccant (28); a dehumidifier section (12) in which air to be conditioned is brought into contact with a first portion of the liquid desiccant; a regenerator section (32) in which outside air is brought into contact with a second portion of the liquid desiccant; and a refrigeration system (45) having a first heat exchanger (46) associated with the first portion of liquid desiccant and a second heat exchanger (36) associated with the second portion of liquid desiccant and a third heat exchanger (136) that does not contact the liquid desiccant.Type: ApplicationFiled: August 20, 2003Publication date: June 17, 2004Inventors: Mordechai Forkosh, Dan Forkosh, Tomy Forkosh
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Patent number: 6739142Abstract: There is provided a system for pumping thermal energy. The system includes (a) a membrane permeator for removing vapor from a process gas and for providing a vapor-depleted process gas, and (b) a gas-liquid contactor for adding vapor from a liquid to a vapor-depleted gas to produce a vapor-added process gas. The system transfers a quantity of thermal energy from the liquid to the vapor-added process gas, and is also capable of upgrading the thermal energy to a higher temperature. The system may be used for various heat pump applications including chilling and waste heat or low level heat recovery.Type: GrantFiled: December 4, 2001Date of Patent: May 25, 2004Inventor: Amos Korin
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Publication number: 20040060315Abstract: A method for conditioning air for an enclosure in which a supply air stream is cooled with a refrigerant system containing a variable compressor by passing the air over a cooling coil to reduce the temperature thereof; the thus cooled supply air stream is then passed through a segment of a rotating desiccant wheel under conditions which increase its temperature and reduce its moisture content, and then delivered to the enclosure. The desiccant wheel is regenerated by heating a regeneration air stream with the condensing coil of the refrigerant system, and then passing the heated regeneration air stream through another segment of the rotating desiccant wheel. At least one condition of the supply air stream, the regeneration air stream, and/or the refrigerant system is sensed or monitored and the output of the compressor is controlled in response to the sensed condition.Type: ApplicationFiled: September 26, 2003Publication date: April 1, 2004Applicant: Munters CorporationInventors: Paul A. Dinnage, Kevin H. Young
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Patent number: 6711907Abstract: A method for conditioning air for an enclosure in which a supply air stream is cooled with a refrigerant system containing a variable compressor by passing the air over a cooling coil to reduce the temperature thereof; the thus cooled supply air stream is then passed through a segment of a rotating desiccant wheel under conditions which increase its temperature and reduce its moisture content, and then delivered to the enclosure. The desiccant wheel is regenerated by heating a regeneration air stream with the condensing coil of the refrigerant system, and then passing the heated regeneration air stream through another segment of the rotating desiccant wheel. At least one condition of the supply air stream, the regeneration air stream, and/or the refrigerant system is sensed or monitored and the output of the compressor is controlled in response to the sensed condition.Type: GrantFiled: December 12, 2002Date of Patent: March 30, 2004Assignee: Munters CorporationInventors: Paul A. Dinnage, Kevin H. Young
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Publication number: 20040033162Abstract: A storage device for the preservation of oxidizable materials includes a storage chamber enclosing a storage space adapted to receive oxidizable materials for storage therein. The storage device also includes a zeolite chamber having a zeolite therein, the zeolite chamber allowing at least one selected gas to pass therethrough while inhibiting at least oxygen from passing therethrough. The zeolite chamber is in fluid communication with the storage chamber such that the at least one selected gas allowed to pass through the zeolite chamber flows into the storage chamber. An air mover feeds gases to the zeolite chamber, and the level of oxygen within the storage chamber is reduced relative to the level of oxygen in the atmosphere.Type: ApplicationFiled: August 7, 2003Publication date: February 19, 2004Inventors: Lawrence Kunstadt, Peter Carlson
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Publication number: 20040031282Abstract: An air conditioning system with thermal storage that is suitable for using solar energy. A solar collector used energy from the sun to evaporate water from a desiccant fluid. The desiccant fluid is then flows into a mass transfer device, which removes moisture from an air stream. Calcium chloride is the preferred desiccant material and can serve as an energy-storage medium. Electric or fuel backup can be used with this system to regenerate the desiccant material. In some embodiments an indirect evaporative cooler is added to provide sensible cooling. A new desiccant cooling system that is specially designed to work with the properties of this desiccant and meet comfort requirements of conventional air conditioning.Type: ApplicationFiled: August 13, 2003Publication date: February 19, 2004Inventor: William Leslie Kopko
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Patent number: 6675601Abstract: An air conditioner including an air supply passage for introducing outdoor air into a room, an air exhaust passage for exhausting indoor air, a rotary dehumidifier that is a rotary drum structure having an air passage formed of a material impregnated with an adsorbent, the rotary dehumidifier being arranged such that one half thereof is disposed in the air supply passage for dehumidifying by adsorption a supply air which is the introduced outdoor air and the other half thereof is disposed in the air exhaust passage for regenerating the adsorbent with use of exhaust air which is the exhausted indoor air as a heat source, a regenerative heater for heating the exhaust air before flowing into the rotary dehumidifier to a temperature required for regenerating the adsorbent of the rotary dehumidifier, a sensible heat exchanger for causing a sensible heat exchange between the supply air dehumidified at the rotary dehumidifier and the exhaust air before flowing into the regenerative heater and a refrigerating deviceType: GrantFiled: October 17, 2002Date of Patent: January 13, 2004Assignee: Sanyo Electric Co., Ltd.Inventor: Toshiyuki Ebara
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Publication number: 20040000152Abstract: The present invention provides an apparatus for dehumidifying air supplied to an enclosed space by an air conditioning unit. The apparatus includes a partition separating the interior of the housing into a supply portion and a regeneration portion. The supply portion has an inlet for receiving supply air from the air conditioning unit and an outlet for supplying air to the enclosed space. A regeneration fan creates the regeneration air stream. The apparatus includes an active desiccant wheel positioned such that a portion of the wheel extends into the supply portion and a portion of the wheel extends into the regeneration portion, so that the wheel can rotate through the supply air stream and the regeneration air stream to dehumidify the supply air stream. A heater warms the regeneration air stream as necessary to regenerate the desiccant wheel. The invention also comprises a hybrid system that combines air conditioning and dehumidifying components into a single integrated unit.Type: ApplicationFiled: June 28, 2002Publication date: January 1, 2004Inventor: John C. Fischer
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Publication number: 20030230092Abstract: An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.Type: ApplicationFiled: April 24, 2003Publication date: December 18, 2003Inventors: Andrew Lowenstein, Jeffrey Miller, Peter Gruendeman, Michael DaSilva
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Publication number: 20030221438Abstract: The present invention relates to novel energy efficient sorption processes and systems for cooling, dehumidifying and heating using multistage liquid desiccant regenerators, or hybrid cooling systems or adsorption cooling systems involving appropriate combinations of rotating contacting devises, adsorption modules with heat transfer passages in thermal contact with the adsorption module wall and switchable heat pipes. The sorption processes of this invention help in flexible designing of compact cooling, dehumidifing, heating systems easy operability. The adsorption module of this invention leads to lower cycle times as low as 5 minutes; makes it possible to achieve high system Coefficient of Performance (COP) up to 0.9 due to reduced thermal mass; offers high specific cooling power in the range of 50 to 750 W/kg of AC; is easy to manufacture and operates at low costs.Type: ApplicationFiled: February 19, 2003Publication date: December 4, 2003Inventors: Milind V. Rane, S. V. Kota Reddy, Akhil Agarwal, Jaskaran S. Bajaj
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Publication number: 20030209017Abstract: An improved method and apparatus for indirect evaporative cooling of a fluid stream to substantially its dew point temperature. Plate heat exchanger has perforations 11 and channels 3, 4 and 5 for gas or a low temperature for liquids on a dry side and wet side. Fluid streams 1 flow across the dry side 9, transferring heat to the plate. Gas stream 2 flows across the dry side and through perforations to channels 5 on wet side 10, which it then cools by evaporative cooling as well as conductive and radiative transfer of heat from plate. A wicking material provides wetting of wet side. In other embodiments, a desiccant wheel may be used to dehumidify the gas, air streams may be recirculated, feeder wicks 13 and a pump may be used to bring water from a water reservoir, and fans may be used to either force or induce a draft. The wicking material may be cellulose, organic fibers, organic based fibers, polyester, polypropylene, carbon-based fibers, silicon based fibers, fiberglass, or combinations of them.Type: ApplicationFiled: March 25, 2003Publication date: November 13, 2003Inventors: Valeriy Maisotsenko, Leland E. Gillan, Timothy L. Heaton, Alan D. Gillan
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Patent number: 6644059Abstract: A dehumidifying apparatus capable of continuously supplying dry air having an absolute humidity of 4 g/kgDA or lower is provided.Type: GrantFiled: November 20, 2002Date of Patent: November 11, 2003Assignee: Ebara CorporationInventors: Kensaku Maeda, Shunro Nishiwaki
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Patent number: 6629427Abstract: A cyclic circuit (20) is constructed by sequentially connecting an expander (22), a heat exchanger (30) and a compressor (21). A dehumidifying mechanism (60) is provided for dehumidifying a heat-absorbing air taken in through an inlet duct (23). An internal heat exchanger (15) is provided for cooling the dehumidified heat-absorbing air and then supplying it to the expander (22). The heat-absorbing air expands in the expander (22) to reduce its temperature. Since the heat-absorbing air has been dehumidified in advance, the moisture thereof does not condense during the expansion thereof. The heat-absorbing air having reached a low temperature through expansion flows into the heat exchanger (30) and absorbs heat from a room air therein. Thereafter, the heat-absorbing air is compressed in the compressor (21), regenerates a rotor member (61) and is then discharged.Type: GrantFiled: October 30, 2001Date of Patent: October 7, 2003Assignee: Daikin Industries, LtdInventors: Chung-cheng Piao, Ryuichi Sakamoto, Yuji Watanabe, Manabu Yoshimi, Kazuo Yonemoto
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Patent number: 6622508Abstract: An apparatus and method for heat and humidity exchange between two air streams, one hot and one humid. A first of the air streams is fed from the interior of a building to the ambient air and a second of the air streams is fed from the ambient air to the interior of the building. The first air stream is cooled and transferred through a heat exchanger, to a heater and a dehumidifier before being exhausted to the ambient air. The second air stream is transferred through the dehumidifier and the heat exchanger, whereupon it is cooled in a cooling device before being transferred into the interior to the building. Before being fed to the dehumidifier, the second air stream is caused to exchange heat and humidity with the first air stream before the latter is fed into the heat exchanger.Type: GrantFiled: March 25, 2002Date of Patent: September 23, 2003Assignee: Munters Europe ABInventors: Paul A. Dinnage, Wolfgang Krause, Dietmar Müller
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Patent number: 6619064Abstract: A first channel (20) is formed by sequentially connecting a compressor (21), a heat exchanger (30) and an expander (22). In the first channel (20), an outside air is taken through a first inlet duct (23) and supplied to a room through a first outlet duct (24). A second channel (40) is formed by connecting both ends of the heat exchanger (30) to ducts (43, 44). In the second channel (40), a room air is taken through the second inlet duct (43) and discharged to outdoors through the second outlet duct (44). A moisture absorbing section (62) of a dehumidifying mechanism (60) is provided in the first inlet duct (23), while a moisture releasing section (63) thereof is provided in the second inlet duct (43). A rotor member (61) including a solid adsorbent rotatively moves between the moisture absorbing section (62) and the moisture releasing section (63). Air dehumidified in the moisture absorbing section (62) is supplied to the compressor (21).Type: GrantFiled: September 5, 2001Date of Patent: September 16, 2003Assignee: Daikin Industries, Ltd.Inventors: Chun-cheng Piao, Ryuichi Sakamoto, Yuji Watanabe, Manabu Yoshimi, Kazuo Yonemoto
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Publication number: 20030167779Abstract: The invention concerns a method for the reclamation of atmospheric water with the help of a water reclamation chamber (1) with water reclamation cells (2) and variable high-performance blowers (3). In this occurs by means of cooling collectors (6) during the nighttime the cooling of a coolant stored in a cooling reservoir (7), and during the daytime operation by means of solar collectors (8) occurs the heating of a further fluid stored in a heat reservoir, whereby the coolant that is cooled during the night for the purpose of water reclamation cools by day and/or night the cooling registers through which air flows. At these cooling registers, the air is dehumidified whereby the heat-accumulating fluid by day and/or by night is used for the generation of energy for the operation of the equipment and/or for the extraction of water.Type: ApplicationFiled: May 5, 2003Publication date: September 11, 2003Inventor: Walter Georg Steiner
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Patent number: 6604374Abstract: In a cooling apparatus, air within a room is first introduced into a radiator-type adsorber (1), where moisture contained in the air is adsorbed by A-type silica gel. The resulting low-humidity air is subsequently introduced into a desorption cooler (5), where moisture is desorbed from B-type silica gel, thereby humidifying and cooling the air. The resulting low-temperature air is then used for cooling. When a cooling capacity of the cooling apparatus is lowered, air from a heat source is introduced into the radiator-type adsorber (1), where the moisture is desorbed from the A-type silica gel, thereby recovering the adsorbability thereof. The high-humidity air resulting from the desorption of the moisture is subsequently introduced into the desorption cooler (5), where the moisture contained in the air is adsorbed by the B-type silica gel, thereby recovering the desorption cooling capacity thereof.Type: GrantFiled: August 27, 2001Date of Patent: August 12, 2003Assignee: Fuji Silysia Chemical Ltd.Inventors: Mutsuhiro Ito, Tatsuya Asano, Masanobu Hasatani, Fujio Watanabe
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Patent number: 6601402Abstract: This invention relates to enthalpy wheels and systems containing enthalpy wheels. The enthalpy wheel subasssembly includes a first plate, a cap, a compliance element between the first plate and the cap and a pressure producing element between the fist plate and the cap.Type: GrantFiled: October 31, 2001Date of Patent: August 5, 2003Assignee: Plug Power Inc.Inventor: Ryan Dunham
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Publication number: 20030136140Abstract: A dehumidifying apparatus capable of continuously supplying dry air having an absolute humidity of 4 g/kgDA or lower is provided.Type: ApplicationFiled: November 20, 2002Publication date: July 24, 2003Inventors: Kensaku Maeda, Shunro Nishiwaki
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Publication number: 20030121271Abstract: A method for conditioning air for an enclosure in which a supply air stream is cooled with a refrigerant system containing a variable compressor by passing the air over a cooling coil to reduce the temperature thereof; the thus cooled supply air stream is then passed through a segment of a rotating desiccant wheel under conditions which increase its temperature and reduce its moisture content, and then delivered to the enclosure. The desiccant wheel is regenerated by heating a regeneration air stream with the condensing coil of the refrigerant system, and then passing the heated regeneration air stream through another segment of the rotating desiccant wheel. At least one condition of the supply air stream, the regeneration air stream, and/or the refrigerant system is sensed or monitored and the output of the compressor is controlled in response to the sensed condition.Type: ApplicationFiled: December 12, 2002Publication date: July 3, 2003Applicant: Munters CorporationInventors: Paul A. Dinnage, Kevin H. Young
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Publication number: 20030121276Abstract: There are provided a heat pump having a high COP and a dehumidifying apparatus arranged in a compact size. The heat pump has a pressurizer 260 for raising a pressure of a refrigerant 260, an evaporator 210 for cooling a low-temperature heat source fluid A with heat of evaporation of the refrigerant to be pressurized, a condenser 220 for heating a high-temperature heat source fluid B with heat of condensation of the pressurized refrigerant, and a first heat exchanger 300a for exchanging heat between the low-temperature heat source fluid A upstream of the evaporator 210 and a cooling fluid. The first heat exchanger 300a has a first compartment 310 through which the low-temperature heat source fluid A flows, a second compartment 320 through which the cooling fluid flows, and refrigerant passages 251A1-A9, 252A1-A9 extending through the first compartment and the second compartment.Type: ApplicationFiled: June 20, 2002Publication date: July 3, 2003Inventor: Kensaku Maeda
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Patent number: RE38181Abstract: An improved dehumidification system for automotive use includes a rotating, wheel like heat exchanger with axially open cells that carry a water adsorbing material. Opposed ambient air and heated air flows, covering opposite halves of the wheel, continually adsorb water on one side and are recharged on the other side. Alternating radially closed cells between the axially open cells carry no desiccant material, but receive a cross cooling flow, on the water adsorbing side of the wheel only, to remove the heat released during the water adsorption process. The desiccant recharging process on the other side of the wheel is not disturbed by the cross cooling flow.Type: GrantFiled: February 23, 2001Date of Patent: July 15, 2003Assignee: Delphi Technologies, Inc.Inventors: Prasad Shripad Kadle, Mohinder Singh Bhatti