Evaporation Induced By Sorption Patents (Class 62/101)
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Publication number: 20100162738Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.Type: ApplicationFiled: June 14, 2007Publication date: July 1, 2010Inventors: Robert E. Low, Stuart Corr
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Patent number: 7726139Abstract: A cooling element with a sorbent material (4) which in vacuo can sorb a vaporous working medium that evaporates from a fluid working medium in an evaporator (29) and with a shut-off means which, up to the moment at which the cooling process is initiated, prevents the working medium vapor from flowing into the sorbent material (4), with the sorbent material (4) being sealed into a sorbent-containing pouch (22) which comprises a multilayer sheeting material which in turn comprises at least one metallic layer or one metallized layer.Type: GrantFiled: February 24, 2006Date of Patent: June 1, 2010Assignee: ZEO-TECH Zeolith-Technolgie GmbHInventor: Peter Maier-Laxhuber
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Publication number: 20100107662Abstract: A diluent nitrogen compressor inlet cooling system comprises a bottoming cycle heat source; a vapor absorption chiller powered by the bottoming cycle heat source, the vapor absorption chiller being configured to cool diluent nitrogen; and a diluent nitrogen compressor that receives the cooled diluent nitrogen from the vapor absorption chiller. A method for cooling an inlet of a diluent nitrogen compressor comprises powering a vapor absorption chiller using a bottoming cycle heat source from the integrated gasification combined cycle system; indirectly cooling diluent nitrogen by the vapor absorption chiller; and sending the cooled diluent nitrogen to a diluent nitrogen compressor inlet.Type: ApplicationFiled: October 30, 2008Publication date: May 6, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Indrajit Mazumder, Rajarshi Saha
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Patent number: 7707840Abstract: A portable air conditioning unit (10) that is designed to produce cooled air without the need for a cooling refrigerant. The unit (10) includes an enclosure (12) that houses an air duct (40) having an air input port (42) attached to a fan (48) that is powered by a rechargeable battery pack (34), and an air exhaust vent (36) that protrudes through an air exhaust opening located on a first panel (24) located on the enclosure (12). The air exhaust vent (36) passes the cooled air through a flexible air passage hose (90) having an air output connector (96) that is attached to a structure air input port (102) located on a cooled-air receiving structure (100). The structure (100) can consist of various structures which include a bed sheet (140), a sleeping bag (148), a tent (178), a field suit (204) or a flexible non-porous drape (230) that is dimensioned to be draped over the back of an animal (304) such as a horse.Type: GrantFiled: September 11, 2006Date of Patent: May 4, 2010Inventor: Mark A. Flores
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Publication number: 20100050667Abstract: Disclosed herein is a method and apparatus for cooling an environment using a low temperature heat source. A cooling apparatus is provided. A refrigerant is vaporized from a refrigeration solution using the low temperature heat source. The vaporized refrigerant with part of the refrigeration solution is channeled to a separator. The vaporized refrigerant is separated from the channeled refrigeration solution. The refrigerant is further vaporized from the separated refrigeration solution leaving behind a dilute refrigeration solution. The refrigerant is condensed. A part of the condensed refrigerant is fed to the first vaporizer leaving behind a residual part of the condensed refrigerant. The residual part of the condensed refrigerant is evaporated by absorbing heat from the environment thereby cooling the environment. The evaporated refrigerant is absorbed by the dilute refrigeration solution to produce a concentrated refrigeration solution.Type: ApplicationFiled: August 27, 2008Publication date: March 4, 2010Inventors: Robert Albion Hall, JR., Emmett H. Ammons, JR., Connelly Kendrick Hayward
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Publication number: 20100024448Abstract: This invention relates to the field of heat-driven cooling devices, heat pumps or thermal transformers, in particular to those devices, known as sorption devices, which employ an ad- or absorbent material as a chemical compressor to raise the pressure of a refrigerant gas. This invention is particularly concerned with a heat exchanger suitable for use as a generator in a sorption device.Type: ApplicationFiled: September 7, 2007Publication date: February 4, 2010Applicant: University of WarwickInventor: Robert Critoph
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Publication number: 20100024447Abstract: An absorption chiller assembly (20) includes a low-stage generator (42) that utilizes heat from vapor resulting from operation of a high-stage generator (26) and heat from another hot liquid such as coolant fluid associated with a prime mover (22). An example low-stage generator (42) includes an arrangement of conduits for directing flow of the two heat sources through the low-stage generator in a manner that both sources simultaneously interact with a refrigerant solution within the low-stage generator. A disclosed example includes an integrated diverter valve that is preassembled and packaged within an absorption chiller assembly. A disclosed heating mode in one example includes using an absorber (60) and a condenser (56) for heating fluid useful for heating operations.Type: ApplicationFiled: May 12, 2006Publication date: February 4, 2010Inventors: Jinsang Ryu, Vivek Halwan, Sunghan Jung, Jules Ricardo Munoz, Jeffrey T. Benoit, Veena Sharmila Sologar Thompson
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Patent number: 7624584Abstract: The invention relates to refrigeration at TU by a reversible sorption system. The installation comprises a reactor (1) in which a reversible sorption between a gas G and a sorbent S takes place, a device (2) in which a reversible phenomenon involving the gas G takes place, means for bringing (2) into communication with (1), and means for isolating them, the equilibrium curve for the reversible phenomenon in (2) lying within a lower temperature range than that of the equilibrium curve for the reversible sorption in (1) in the Clausius-Clapeyron plot. The device (2) contains, apart from the gas G, a liquid/solid phase change material M having a solidification temperature TS below the frigeration working temperature TU. Use for freezing various products or for producing chilled water or ice.Type: GrantFiled: July 11, 2003Date of Patent: December 1, 2009Assignees: Centre National de la Recherche Scientifique, Universite de PerpignanInventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Bruno Spinner, legal representative, Caroline Spinner Brossard, legal representative, Anne Christel Spinner Kohler, legal representative, Camille Spinner, legal representative, Martin Spinner, legal representative
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Publication number: 20090272134Abstract: An absorptive refrigeration method that employs a refrigerant comprising one or more hydrofluoroolefin or hydrochlorofluoroolefin refrigerants, and an oil selected from the group consisting of a polyalkyene glycol oil, a poly alpha olefin oil, a mineral oil and a polyolester oil.Type: ApplicationFiled: April 29, 2009Publication date: November 5, 2009Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Ryan J. Hulse, Rajiv Ratna Singh
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Publication number: 20090120109Abstract: A self-cooling packaging comprises a cavity forming a heat exchanger (20) and containing a refrigerant liquid and the vapour thereof and a cavity forming an adsorption chamber (30) for pumping of said vapour. The packaging also includes connection means (40) provided in a common wall (25) of said cavities (20, 30), said connection means comprising a check valve (42), and actuating means (45) disposed on the side of the adsorption chamber cavity (30) and adapted to open the check valve (42) to an initial position inside the heat exchanger cavity (20). The packaging further comprise spring means (43), the check valve (42) being adapted to progressively reach a fully open position under the action of said spring means (43). The invention makes it possible to realise a progressive opening of the check valve inside the heat exchanger cavity.Type: ApplicationFiled: February 1, 2005Publication date: May 14, 2009Inventors: Pierre Jeuch, Lionel Frantz, Fadi Khairallah
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Publication number: 20090094996Abstract: The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase opposition. The thermochemical phenomena in one of the dipoles are such that this dipole may produce refrigeration at Tf with a heat sink at the ambient temperature To. The thermochemical phenomena in the other dipole are such that this dipole may be regenerated from the heat source Th and a heat sink-at the temperature To.Type: ApplicationFiled: November 4, 2005Publication date: April 16, 2009Inventors: Driss Stitou, Nathalie Mazet, Bernard Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Bruno Spinner, Martin Spinner, Camille Spinner
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Patent number: 7456131Abstract: A monolith comprises a zeolite, a thermally conductive carbon, and a binder. The zeolite is included in the form of beads, pellets, powders and mixtures thereof. The thermally conductive carbon can be carbon nano-fibers, diamond or graphite which provide thermal conductivities in excess of about 100 W/m·K to more than 1,000 W/m·K. A method of preparing a zeolite monolith includes the steps of mixing a zeolite dispersion in an aqueous colloidal silica binder with a dispersion of carbon nano-fibers in water followed by dehydration and curing of the binder is given.Type: GrantFiled: August 28, 2006Date of Patent: November 25, 2008Assignee: UT-Battelle, LLCInventors: James Klett, Lynn Klett, Jonathan Kaufman
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Patent number: 7434411Abstract: Microchannel or fractal plate desorption retains the advantage of high-flux, thin-film desorption without using membranes and allows for lightweight, compact desorbers for either LiBr and water or ammonia and water. Working embodiments of the process comprise providing a droplet desorber, feeding a multicomponent fluid mixture comprising at least a first fluid and a second fluid to the desorber, and performing a desorption process on the mixture using the desorber. The primary fluid mixtures used were ammonia and water, and aqueous lithium bromide. Various working embodiments of desorbers are disclosed, including several desorbers comprising plural, substantially straight, substantially parallel microchannels in an array, and a fractal plate desorber, such as a bifurcating fractal plate.Type: GrantFiled: December 15, 2004Date of Patent: October 14, 2008Inventors: Kevin M. Drost, Vinod Narayanan, Deborah V. Pence
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Publication number: 20080229766Abstract: A method, apparatus and system for transferring heat is disclosed using a first gas adsorbent material, and a second gas adsorbent material that is relatively thermally isolated from but in continuous gas communication with the first material. In a first step the first material is heated so as to desorb a gas adsorbed onto the first material whereby the gas passes to and is adsorbed onto the second material. In a second step the first material is cooled in a manner so that the gas is desorbed from the second material and passes therefrom to be re-adsorbed onto the first adsorbent material. When the gas is desorbed from the second material, the second material is cooled thereby. In this way a hot gas stream can be used to cool another gas stream.Type: ApplicationFiled: January 25, 2005Publication date: September 25, 2008Applicant: Commonwealth Scientific and Industrial Research OrganisationInventor: Sunil Dutt Sharma
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Publication number: 20080115513Abstract: The present invention provides an improved control system and method for the absorption refrigeration process. The system includes sensors that measure the absorption process in order to determine if the absorption cycle is continuous. A control unit in communication with the sensors which compares the measured sensor values to predetermined safe limits. When the control unit determines that safe limits have been exceeded, the control unit communicates with actuators adjusting the absorption cycle heat source, ultimately protecting the absorption refrigeration process from damage. Further, the control may reestablish the absorption cycle heat source when predetermined safe operation conditions are detected.Type: ApplicationFiled: July 3, 2007Publication date: May 22, 2008Inventor: Paul Neilson Unmack
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Publication number: 20080029506Abstract: Electromagnetic components are provided with a heat exchange mechanism. For example, a fluid-cooled electromagnetic field-functioning device, such as a motor, generator, transformer, solenoid or relay, comprises one or more electrical conductors. A monolithic body of phase change material substantially encapsulates the conductors or an inductor. At least one liquid-tight coolant channel is also substantially encapsulated within the body of phase change material. The coolant channel may be part of a heat pipe or cold plate. The coolant channel may be made by molding a conduit into the body, using a “lost wax” molding process, or injecting gas into the molten phase change material while it is in the mold. The coolant channel may also be formed at the juncture between the body and a cover over the body.Type: ApplicationFiled: July 19, 2006Publication date: February 7, 2008Inventor: Griffith D. Neal
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Patent number: 7293421Abstract: A method for cooling a product (P) including N ordered adsorption/desorption cycles (100, 200, 300), each cycle having the following steps: expanding a refrigerant in liquid phase from a condenser (101, 201, 301) inside an evaporator (103, 203, 303) for evaporating at least one portion of the refrigerant, and; adsorbing this refrigerant in vapor phase inside at least one adsorption/desorption chamber (120, 220, 320) containing a zeolite adsorbent (Z) whereby cooling a remaining portion of the refrigerant in the evaporator to a predetermined low temperature, the low temperature decreasing from one cycle to the next. The method also includes the following steps: effecting N-1 heat exchanges each time the refrigerant enters the evaporator (103, 203) of a cycle and each time the refrigerant enters the condenser (201, 301) of the following cycle for condensing the refrigerant in the condenser.Type: GrantFiled: June 4, 2004Date of Patent: November 13, 2007Assignee: Gaz Transport et TechnigazInventors: Pierre Michalski, Pierre Gourmelen, Claude Blaizat
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Patent number: 7266949Abstract: A self-cooling beverage package having a first cavity (10) containing a beverage for consumption, a second cavity (20) forming a heat exchanger and containing a refrigerant liquid and its vapor, a third cavity (30) containing means of pumping by adsorption of said vapor and means (50) of putting said second cavity into communication with said third cavity, characterised in that the third cavity (30) has an external thermal insulation layer (35).Type: GrantFiled: December 18, 2002Date of Patent: September 11, 2007Assignee: Thermagen SAInventors: Pierre Jeuch, Fadi Khairallah
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Patent number: 7266967Abstract: An air conditioner for an automotive vehicle having a water-cooling type internal combustion engine includes: a first refrigerator; and an adsorption type refrigerator having adsorbent. The first refrigerator controls temperature of air to be blown into a passenger compartment of the vehicle. The adsorbent generates adsorption heat when the adsorbent adsorbs the medium, and desorbs the adsorbed medium when the adsorbent is heated by coolant water in the internal combustion engine. The air to be blown into the passenger compartment is heated by the adsorption heat of the adsorbent, and is cooled by evaporation latent heat of the medium.Type: GrantFiled: February 2, 2005Date of Patent: September 11, 2007Assignee: DENSO CorporationInventors: Satoshi Inoue, Shigeji Ooishi, Hideaki Satoh, Hiroshi Mieda
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Patent number: 7251955Abstract: A solid sorption heat pump is provided that includes an adsorber/desorber unit including a heat exchanger and a solid sorption material. The adsorber/desorber unit is placed in a common housing, which is sealed against the outside atmosphere, together with a condenser/evaporator unit, and the adsorber/desorber unit and the condenser/evaporator unit are separated from one another by an adsorbant-permeable element. The adsorber/desorber unit includes a thermoconductive absorbent holding body, which is connected in a thermoconductive manner to the heat exchanger. The absorbant holding body holds the sorption material, and provides stability to the adsorber/desorber unit. The interior of the common housing is subjected to the action of a negative pressure.Type: GrantFiled: April 15, 2003Date of Patent: August 7, 2007Assignee: Sortech, AGInventor: Hans-Martin Henning
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Patent number: 7222500Abstract: When using systems that use the principle of absorption for the production of cold there is a great delay between the starting of the installation and the production of cold. This delay is due to the necessary time for the production of vapour. According to the invention a storing device of cooling liquid under pressure is proposed that is used instead of the vapours produced by a boiler (1) when starting the installation. This storing is done in a receiver (4) commanded by two valves, one called upstream valve (3) and the other called downstream valve (5). According to the invention the method consists in storing cooling liquid under pressure in a receiver and using this liquid under pressure when starting the installation.Type: GrantFiled: September 4, 2000Date of Patent: May 29, 2007Assignee: Ecoclim SAInventor: Vitale Bruzzo
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Patent number: 7171824Abstract: A cooling or heating device in an absorption heat pump of GAX type, including a generator, a GAX heat exchanger, an absorber, a condenser, an evaporator, a pump connected to the absorber and generator, and a first circuit for refrigerant solution circulating through the device and connecting together at least the generator, GAX heat exchanger, absorber, condenser, evaporator, and pump. A valve device modifies the first circuit to vary the manner in which the absorber, condenser, and evaporator are connected together. At least first and second heat exchanger units enable at least one phase of the circulating solution to be changed and to enable thermal energy to be exchanged against an external fluid, the first and second heat exchanger units each including at least two mutually separate sub-heat exchangers configured to function either as an evaporator or as an absorber and condenser, depending on an operating mode of the device.Type: GrantFiled: December 16, 2002Date of Patent: February 6, 2007Assignee: Robur S.p.A.Inventor: Marco Guerra
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Patent number: 7024880Abstract: An icemaking apparatus includes an evaporator tube, a driving vessel charged with liquid ammonia and a driving gas, a heat source, a return system, and a target material reservoir adapted to be placed in an operating position over the evaporator tube. The evaporator tube has a heat transfer feature formed on and extending from a generally cylindrical outer evaporator tube surface. The heat source applies heat to the driving vessel to force liquid ammonia through an evaporator supply line to an expansion chamber inlet associated with the evaporator tube. The liquid ammonia goes to a gas as it enters the expansion chamber portion of the evaporator tube resulting in a transfer of heat from water or other target material contained in the target material reservoir secured over the evaporator tube in the operating position. The return system returns ammonia and hydrogen gas from the evaporator to the driving vessel.Type: GrantFiled: June 2, 2004Date of Patent: April 11, 2006Assignee: Camp-Ice, Inc.Inventor: Anthony S. Wagner
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Patent number: 7003966Abstract: A method of reducing energy consumption in a multi-effect absorption system. The multi-effect absorption system includes a primary generator for a primary desorption process and a secondary generator for a secondary desorption process. In the method, heat is provided to the primary generator from a primary heat source for the primary desorption process. Heat generating devices are cooled with the multi-effect absorption system while the generated heat is collected and transferred to the to the secondary generator for use in the secondary desorption process thereby reducing the amount of heat required from the primary heat source and reducing the energy consumption of the absorption system.Type: GrantFiled: December 19, 2003Date of Patent: February 28, 2006Assignee: Hewlett Packard Development Company, L.P.Inventors: Ratnesh K. Sharma, Cullen E. Bash, Chandrakant D. Patel, Cyril Brignone
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Patent number: 6895779Abstract: An adsorption refrigeration device having an evaporator containing a refrigerant liquid that evaporates under the effect of a depression and an adsorbent capable of fixing the vapors (V) of the refrigerant liquid. The adsorbent is in contact with a heat exchanger containing a cooling liquid that evaporates when the adsorbent (205) is heated, and the heat exchanger includes at least one aperture to the outside atmosphere constituted by at least one hole that limits the flow rate of the vapor of the cooling liquid.Type: GrantFiled: November 9, 2001Date of Patent: May 24, 2005Assignee: ThermagenInventor: Pierre Jeuch
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Patent number: 6843071Abstract: Portable refrigeration devices (1) including methods for preparing sorbents (30) for use in such devices, and the sorbents (30) prepared in this way. The methods relate to the substantially complete degassing for the maximization of receiving refrigerant vapor from the evaporator chamber (10) of such refrigeration devices (1), and the maximization of heat transfer to heat sink materials (40) in such refrigeration devices (1).Type: GrantFiled: February 24, 2000Date of Patent: January 18, 2005Assignee: Tempra Technology Inc.Inventors: Cullen M. Sabin, Zbigniew R. Paul, Martin W. Sabin
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Patent number: 6829902Abstract: A self-cooling can (10) which is suitable for cooling 300 ml of beverage by 30° F. in a maximum of 3 minutes comprises an internal evaporator (30) and an absorber unit (20) which is fixed typically to the base of the can. Cooling is initiated by providing a vapour path from the evaporator (30) to a desiccant region of the absorber unit (20). Heat is removed from the vapour and/or any heat due to the reaction with the desiccant (24) by heat sink material (26) around the desiccant region (22).Type: GrantFiled: January 29, 2002Date of Patent: December 14, 2004Assignee: Crown Cork & Seal Technologies CompanyInventor: Paul Charles Claydon
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Patent number: 6817210Abstract: The present invention relates an absorptive high temperature desorber for mechanically narrowing the width of the combustion area, and an absorption chiller-heater using the absorptive high temperature desorber. The high temperature desorber comprises a plurality of combustion chambers, a group of liquid ducts arranged in the perpendicular direction in the combustion chambers, and the distribution chambers independently supplying a mixing gas to the plurality of combustion chambers. Therefore, the high temperature desorber can form flame independently and variably in the combustion chamber, and has a mechanically small width.Type: GrantFiled: October 8, 2003Date of Patent: November 16, 2004Assignee: L G Cable LTDInventors: Ig Saeng Kim, Kyun Seok Kim, Do Hyung Kim, Chun Dong Kim, Chang Ho Lee
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Publication number: 20040211205Abstract: A method and installation is described for producing cold and/or heat, in a place where the latter are to be used, from one or more heat energy sources. The method is carried out in an installation comprising two or three assemblies of two reactors in which reversible phenomena involving a gas take place, said phenomena being exothermic in the sense of synthesis and endothermic in the sense of decomposition. The energy for the operation of the installation is supplied by a low temperature reactor of one or two assemblies. The installation is suitable for the remote production of cold or heat by means of the transport of gas at ambient temperature.Type: ApplicationFiled: April 2, 2004Publication date: October 28, 2004Inventors: Bernard Spinner, Jalel Labidi, Driss Stitou
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Publication number: 20040211214Abstract: An absorption refrigerator includes a high temperature regenerator for heating a water solution including a halogen compound to generate steam. An oxide film having thickness of 0.02-5.0 &mgr;m, one of the colors blue, purple and gray, or a hydroxyl group is formed on a surface of at least one of the high temperature regenerators and the heat exchanger.Type: ApplicationFiled: May 21, 2004Publication date: October 28, 2004Inventors: Katsumi Mabuchi, Heihatiro Midorikawa, Tomoko Kikuchi, Takashi Honda, Michihiko Aizawa, Masahiko Ito
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Patent number: 6761042Abstract: Portable refrigeration devices (1) including methods for preparing evaporator chambers (10) for use in such devices, and the evaporator chambers (10) prepared in this way. The methods relate to the dispersion of refrigerant for the maximization of efficiency of vaporization of refrigerant vapor from the evaporator chamber (10) of such refrigeration devices (1).Type: GrantFiled: October 24, 2002Date of Patent: July 13, 2004Assignee: Tempra Technology, Inc.Inventor: Martin W. Sabin
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Patent number: 6735963Abstract: An aqua-ammonia absorption cooling and/or heating system having a variable speed burner which uses active flow control of weak liquor and/or active control of refrigerant flow to the evaporator.Type: GrantFiled: April 16, 2002Date of Patent: May 18, 2004Assignee: Rocky ResearchInventors: Paul Sarkisian, Lance Kirol, Uwe Rockenfeller
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Publication number: 20040079106Abstract: Adsorption cooling apparatus with an intermittently heated adsorbent container (12) containing an adsorbent (19) that exothermically adsorbs a working medium during an adsorption phase and again desorbs at higher temperatures while heat is added during a subsequent desorption phase, and with a condenser (4) that leads condensed working medium through a connection line (10) into the evaporator (4) which is in turn connected with the adsorbent through a working medium vapor line (9), wherein the condenser (4) is coupled to a buffer reservoir (14) that buffers at least a part of the condensation heat of the working medium vapor and that also can again dissipate the stored heat into the surroundings even during the adsorption phase.Type: ApplicationFiled: September 8, 2003Publication date: April 29, 2004Applicant: ZEO-TECH Zeolith-Technologie, GmbHInventors: Peter Maier-Laxhuber, Andreas Becky, Ralf Schmidt, Reiner Worz, Norbert Weinzierl
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Patent number: 6706097Abstract: A molecular sieve apparatus and magnetic/adsorbent material composition facilitate molecular adsorption and separation using a magnetic field to hold, move, cool, and/or heat an adsorbent 1 that is bonded to magnetic materials 3 that are moveable by a magnetic field. An adsorbent 1 is bonded to a soft magnetic material 3 with a binder 2 into a powder composite material adsorbent attractable by a magnetic field (magnetoadsorbent 4). Magnetoadsorbent 4 functions to adsorb and desorb working substances, causing a molecular separation; thereby increasing the efficiency of the adsorption cycle by moving the adsorbent 1 to a location that optimally processes the adsorbent 1. Magnetic field manipulation of adsorbents 1 enables delivery of molecules to locations within systems. Magnetoadsorbents 4 of the present invention further increase the efficiency of the adsorption cycle by combining materials with functions including: catalyst, buoyancy, suspension, magnetic heating, and sinking in liquid.Type: GrantFiled: June 29, 2001Date of Patent: March 16, 2004Assignee: Hexablock, Inc.Inventor: David A. Zornes
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Patent number: 6701726Abstract: Data points are determined for an absorption chiller system which relate a position of the capacity valve to the heat input into the system. A continuous curve is determined which estimates the relationship between the position of the capacity valve and the heat input for all of the data points and all the points in between. The slope of this curve is the valve gain. The error for the system is defined as the difference between the setpoint and the leaving chilled water temperature. The leaving chilled water temperature of the system is measured to determine the actual error for the system, after which a linearizing gain derived as a function of the inverse of the valve gain is used in the system control algorithm to linearize the overall valve gain, thereby eliminating capacity valve hunting and producing an improved transient response.Type: GrantFiled: October 29, 2002Date of Patent: March 9, 2004Assignee: Carrier CorporationInventors: Richard Kolk, David M. Martini
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Patent number: 6698231Abstract: Containers are provided. A representative container comprises: an outer shell defining an interior and having a lid, the outer shell having at least one opening for providing access to the interior, the lid being movable between an open position and a closed position, in the closed position the outer shell encasing the interior, in the open position the lid providing access to the interior, the outer shell comprising cardboard; a storage chamber formed within the interior and communicating with the opening, the storage chamber being adapted to receive at least one item; insulating material disposed within the interior between the storage chamber and the outer shell; and temperature-maintaining material disposed within the interior, the temperature-maintaining material comprising a super-absorbent.Type: GrantFiled: October 1, 2002Date of Patent: March 2, 2004Inventor: John Henry Gano, III
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Patent number: 6666037Abstract: An object of the invention is to enable heat sources to be surely utilized in accordance with order of priorities and to prevent a overshooting of a temperature of cold water supplied from an evaporator even when a load is immediately changed. A flow of exhaust hot water supplied from a low-temperature heat source supply pipe to a low-temperature water regenerator is forcibly controlled to be the maximum. In such a state, when the cold water temperature measured by a temperature sensor becomes lower than a primary setting value of 7° C., the flow of exhaust hot water supplied from the low-temperature heat source supply pipe to the low-temperature water regenerator is controlled by starting again a PID control using 6° C. lower than the primary setting value of 7° C. as reference. Moreover, a flow of exhaust gas supplied from a high-temperature heat source supply pipe to a high-temperature regenerator is forcibly controlled to be zero.Type: GrantFiled: May 30, 2002Date of Patent: December 23, 2003Assignees: Sanyo Electric Co., Ltd., Sanyo Electric Air Conditioning Co., Ltd.Inventors: Toshiyuki Hoshino, Masahiro Furukawa
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Patent number: 6637220Abstract: A routine of controlling the dilution cycle of an absorption chiller to determine when to initiate a dilution cycle, continue the cycle and terminate the cycle. The concentration of solution leaving the chiller's low temperature generator is calculated and the crystallization temperature of the solution is then determined. The crystallization temperature is compared to the ambient temperature and the result is used to determine whether to institute a dilution cycle, continue the cycle or terminate the cycle.Type: GrantFiled: July 29, 2002Date of Patent: October 28, 2003Assignee: Carrier CorporationInventor: Darren S. Sheehan
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Patent number: 6637221Abstract: A method of controlling the capacity of an absorption chiller by regulating the heat input to a generator in response to a selected one of two system variables. The first variable involves the measured chilled water temperature leaving the system evaporator and the second involves the calculated solution concentration that is being returned to the absorber. Data relating to each variable is sent to a selector where it is processed so that the data can be used to control the heat input to the generator. The temperature data is used to control the heat input during normal chiller operation, however, the selector changes over control to the concentrate related data when the solution concentration level approaches the solution crystallization limit.Type: GrantFiled: May 31, 2002Date of Patent: October 28, 2003Assignee: Carrier CorporationInventors: Neil D. Jenkins, Richard A. Kolk
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Patent number: 6536229Abstract: A steam type absorption refrigerator which circulates absorption fluid from an absorber (1), through a low-temperature heat exchanger (3), a low-temperature regenerator (4), a high-temperature heat exchanger (6), a steam heating type high-temperature regenerator (7), the high-temperature heat exchanger (6) and the low-temperature heat exchanger (3) in order, back to the absorber (1) comprising, a fluid concentrating boiler (10) which is disposed between the high-temperature regenerator (7) and the high-temperature heat exchanger (6) concentrating the absorption fluid under heat, and a pump (13) which extracts a part or all of the concentrated absorption fluid from the high-temperature regenerator (7) and feeds it to the fluid concentrating boiler (10), wherein the fluid concentrating boiler is connected to the high-temperature heat exchanger (6) so that the absorption fluid concentrated under heat is returned to the heating side of the high-temperature heat exchanger (6) and is also connected to the high-tempType: GrantFiled: March 6, 2001Date of Patent: March 25, 2003Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Syuzo Takabatake, Kunihiko Nakajima, Osamu Ohishi, Kenichi Saitou, Masuomi Ohta
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Patent number: 6526776Abstract: A cooling method using an adsorption agent is carried out in an apparatus including at least one reactor/adsorber embodied as a vessel for receiving the adsorption agent such as zeolite, at least one evaporator vessel receiving an evaporation agent such as water, and at least one line which connects the two vessels and which can be shut off with at least one shut-off member. The reactor/adsorber and the evaporator each have at least one orifice and are selectively connectable to a vacuum generator and to at least one condenser. The selective separation and connection of individual components and/or of component groups for carrying out regeneration and adsorption cycles take place in each case in a pressure-tight or vacuum-tight manner and with air being shut off.Type: GrantFiled: May 11, 2001Date of Patent: March 4, 2003Assignee: H + P Technologie GmbH & Co. Gesellschaft fuer KuehlsystemeInventor: Norbert Patzner
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Publication number: 20030037566Abstract: Containers are provided. A representative container comprises: an outer shell defining an interior and having a lid, the outer shell having at least one opening for providing access to the interior, the lid being movable between an open position and a closed position, in the closed position the outer shell encasing the interior, in the open position the lid providing access to the interior, the outer shell comprising cardboard; a storage chamber formed within the interior and communicating with the opening, the storage chamber being adapted to receive at least one item; insulating material disposed within the interior between the storage chamber and the outer shell; and temperature-maintaining material disposed within the interior, the temperature-maintaining material comprising a super-absorbent.Type: ApplicationFiled: October 1, 2002Publication date: February 27, 2003Inventor: John Henry Gano
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Publication number: 20030000231Abstract: A computer system is described having a refrigeration cycle for a logic processor each utilizes first and second refrigeration cycles, each including a respective adsorber/desorber. Each adsorber/desorber is alternatingly cooled and heated. A liquid is adsorbed into the adsorber/desorber when being cooled and desorbed when the adsorber/desorber is heated. When the liquid is desorbed from the adsorber/desorber, and a checkvalve is closed, a pressure of the liquid increases. The adsorber/desorber together with the checkvalve act as a compressor in the respective refrigeration cycle. Heating and cooling is alternated so that one adsorber/desorber always adsorbs liquid while the other adsorber/desorber desorbes liquid.Type: ApplicationFiled: June 27, 2001Publication date: January 2, 2003Inventors: Himanshu Pokharna, Eric Distefano, Joseph D. Walters
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Patent number: 6497110Abstract: To cool heat-emitting electronic components, a compact, non-moving-parts compressor, an evaporator in juxtaposition to the electronic components and a condenser are mounted as a unit, preferably within a vacuum can. A heat exchanger is mounted external to the can but in proximity to the condenser. The foregoing comprise a unit which may be detachably connected to a host pump and heat exchanger. The unit may be removed from the system of which it is a part for upgrade and maintenance. All its components are thermally isolated from the ambient atmosphere to prevent water vapor condensation corrosion.Type: GrantFiled: August 28, 2001Date of Patent: December 24, 2002Assignee: Sun Microsystems, Inc.Inventors: Howard L. Davidson, Dennis M. Pfister, Charles Byrd
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Patent number: 6477852Abstract: A heat and electric power supply system includes a regenerative gas turbine and an adsorption refrigerator recovering exhaust heat of exhaust gas from the gas turbine and is provided with inlet air cooling equipment including a spray device for spraying cold water from the adsorption refrigerator into an air-intake port of the regenerative gas turbine and a humidifier effecting humidification by hot water injection from the refrigerator into a compressor delivery port of the regenerative gas turbine. The cooling by cold water and humidification by hot water injection are effected according to operational conditions.Type: GrantFiled: March 6, 2001Date of Patent: November 12, 2002Assignee: Hitachi, Ltd.Inventors: Satoshi Dodo, Kuniyoshi Tsubouchi, Norio Yasugahira, Hiroshi Arita, Yasuaki Akatsu, Shigeo Hatamiya
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Patent number: 6474100Abstract: An evacuated sorbent driven cooling device which may be added to a beverage or food container and which may also be affixed to, or integrated within, a panel of a beverage container.Type: GrantFiled: April 25, 2001Date of Patent: November 5, 2002Assignee: Thermal Products Development Inc.Inventors: Douglas Smith, Kevin Roderick, Lyra Fiset, Robert Braun
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Patent number: 6427478Abstract: An aqua-ammonia absorption apparatus comprising an absorber assembly, a generator assembly, a condenser and an evaporator, wherein the absorber assembly comprises an absorber and a GAX absorber heat exchanger and wherein a strong liquor absorption solution is partially vaporized in the GAX absorber heat exchanger to form a two-phase vapor/liquor mixture, the apparatus including piping for directing separate vapor and liquid streams from the absorber assembly into the generator assembly and introducing the vapor stream into the generator assembly at a location where the composition is substantially the same as the vapor stream.Type: GrantFiled: August 3, 2000Date of Patent: August 6, 2002Assignee: Rocky ResearchInventors: Lance D. Kirol, Paul Sarkisian
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Patent number: 6408643Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.Type: GrantFiled: March 22, 2001Date of Patent: June 25, 2002Assignee: Kawasaki Thermal Engineering Co., Ltd.Inventors: Syuzo Takabatake, Kunihiko Nakajima, Kenichi Saitou, Hideharui Arai, Masuomi Ohta
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Patent number: 6397625Abstract: The invention relates to an absorption refrigeration machine using the Platen-Munters system and comprising a generator (7) for evaporating a refrigerant in a solvent, a solvent separator (2) in which the solvent is separated from the refrigerant; a condenser (3) for liquefying the refrigerant; an evaporator (4) in which the refrigerant is evaporated using a dry gas while beeing cooled; possibly a first gas heat exchanger (6); and an absorber (5) in which the evaporated refrigerant is added to the depleted mixture of refrigerant and solvent which is then again evaporated in the generator (7). The output of the evaporator (4) or the output of the first gas heat exchanger (6) which is possibly positioned downstream of the evaporator (4) and the output of the generator (7) discharge into a bypass (8) connected to the absorber (5).Type: GrantFiled: March 13, 2001Date of Patent: June 4, 2002Assignee: Solarfrost International Ltd.Inventor: Gerhard Kunze
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Patent number: 6389839Abstract: A disposable flow-through refrigeration system includes an evaporator chamber containing a refrigerant, which, during system operation, evaporates to form a vapor; an evacuated absorber chamber including sorbent for receiving the vapor, a heat sink material in thermal contact with the sorbent, and a means for preventing vapor flow from evaporator to absorber until operation of the refrigeration system. The system also includes a primary volume of dispensable product and a product reservoir in fluid communication with each other. The system includes a dispensing means configured to enable controlled withdrawal of a secondary volume of product contained in the reservoir which includes a flow path from the primary volume to the dispensing means. At least one wall of the flow path is in thermal contact with an outer surface of the evaporator chamber during operation of the refrigeration system.Type: GrantFiled: May 7, 2001Date of Patent: May 21, 2002Assignee: Tempra Technologies, Inc.Inventor: Cullen M. Sabin