Evaporator-condenser Unit Patents (Class 62/478)
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Patent number: 11512847Abstract: Steam production apparatuses are provided. The apparatuses can include at least two compartments that are mechanically engaged. Processes for the production of steam are also provided. The processes can include providing liquid water to a reactive material within a first compartment to generate steam within the first compartment; transferring at least some of the steam to a second compartment that is mechanically engaged with the first compartment; and exposing the steam from the first compartment to material within the second compartment that extends when exposed to the steam, the extending of the material reducing the volume of the first compartment.Type: GrantFiled: February 19, 2020Date of Patent: November 29, 2022Inventor: Alan Rose
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Patent number: 10605496Abstract: An air changeover system for a metal hydride heat pump is disclosed. The system includes metal hydride reactor modules aligned and separated by a partition; a shell containing the reactor modules, the shell is compartmentalized to define separate insulated chambers for each of the reactor modules; and a bearing assembly supporting the modules at a location about the partition, wherein the bearing assembly rotates said modules about an axis during the absorption and the desorption mode. The system reduces thermal inertia and pressure drop in the heat transfer medium while flowing through the heat pump, to enhance the performance and conserve energy.Type: GrantFiled: November 26, 2015Date of Patent: March 31, 2020Assignee: THERMAX LIMITEDInventors: Devadatta Pundlik Navale, Vilasrao Vyankatrao Dubal, Anil Patki, Ramakrishna Ramanath Sonde
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Patent number: 9032755Abstract: The invention provides cooling apparatus comprising: a solar heat collection means (2); two or more absorption refrigeration modules (1), each module being arranged to receive heat from the heat collection means and to re-circulate refrigerant through an evaporator (16); and means for putting a fluid to be cooled into thermal contact with each of the evaporators.Type: GrantFiled: September 23, 2009Date of Patent: May 19, 2015Assignee: SOLAR POLAR LIMITEDInventors: Robert Eaton Edwards, Michael Graham Reid
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Patent number: 8756944Abstract: A heat transfer device and its manufacturing method are provided. The heat transfer device has a heat transfer member defining a heat exchange surface with which a heat transportable medium contact in use and via which heat is transferable between the heat transportable medium and a working medium, and a device body for containing the heat transportable medium. The body of the device defines a first chamber, a second chamber and a third chamber which are in fluid communicable relationship. The body is configured to allow the heat transportable medium fluid to pass from the second chamber to the first chamber and then to the third chamber, or from the third chamber to the first chamber and then to the second chamber, and the second chamber is sandwiched or positioned between the first chamber and the third chamber in the body.Type: GrantFiled: February 24, 2011Date of Patent: June 24, 2014Assignee: Bestrong International LimitedInventors: Stefan Petters, Ka Chun Tse
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Patent number: 8739566Abstract: A Motor Cycle personal cooling system is disclosed that utilizes waste heat employing solid adsorption. The system includes an air distribution module and one or more desiccant chambers encircling the exhaust pipes of the Motor Cycle. Air blowers blow ambient air across the heat exchanger, cooling the air, transferring heat to the heat exchanger, transferring heat to the water, causing it to boil, and turning the water into vapor which is then adsorbed by the desiccant. A heat source is then applied to the desiccant which releases the vapor that travels to one of the heat exchangers and condenses the vapor back into water. A cooling garment worn by rider of the Motor Cycle has a cool air input and an exhaust output. The cool air input of the cooling garment receives cooled air from the air blowers, and body heat exits out the exhaust output.Type: GrantFiled: April 30, 2008Date of Patent: June 3, 2014Assignee: Oxicool, Inc.Inventor: Ravikant T. Barot
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Publication number: 20130327084Abstract: This invention relates to a composition comprising water and at least one ionic liquid, and also to devices capable of executing an absorption cycle using such compositions as a refrigerant pair. This invention also provides a method of cooling using an absorption cycle comprising water as the refrigerant and at least one ionic liquid as the absorbent. The present invention also provides a method of heating using an absorption cycle comprising water as the refrigerant and at least one ionic liquid.Type: ApplicationFiled: August 12, 2013Publication date: December 12, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: MARK BRANDON SHIFLETT, Akimichi Yokozeki
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Patent number: 8578732Abstract: The invention relates to a compact sorption cooling unit, comprising at least one adsorber/desorber unit (1) having a heat exchanger and sorption material, at least one condenser heat exchanger (5), and at least one evaporator heat exchanger (6), wherein these building blocks are located in a common, vacuum-tight metal outer housing, and having connection and coupling elements and pipe ducts for the hydraulic interconnection and operation of the unit. The invention provides a sandwich structure, wherein the at least one adsorber/desorber unit (1) is located in an inner or partial inner housing. The condenser heat exchanger (5) and the evaporator heat exchanger (6) are disposed at a distance from each other, and the inner housing having the adsorber/desorber unit (1) is provided in the intermediate space thereof. The separating surfaces (2) of the inner housing directed toward the condenser heat exchanger (5) and toward the evaporator heat exchanger (6) receive steam valves (8, 9).Type: GrantFiled: January 15, 2008Date of Patent: November 12, 2013Assignee: SorTech AGInventors: Thomas Büttner, Walter Mittelbach
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Patent number: 8544294Abstract: A subassembly for an adsorption chiller includes an adsorption component that includes a plurality of plates arranged in a stack. Refrigerant passages are defined between refrigerant sides of adjacent pairs of the plates in the stack. An adsorbent material is disposed within the refrigerant passages.Type: GrantFiled: July 11, 2011Date of Patent: October 1, 2013Assignee: Palo Alto Research Center IncorporatedInventor: Sean Garner
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Publication number: 20120304686Abstract: An absorption cycle system utilizes an additional absorption circuit in conjunction with a traditional absorption circuit. The absorbent used in the additional absorption circuit could contain an ionic compound, or any absorbent with relatively low crystallization. Mixtures of such absorbent with water remain liquid at temperatures lower than the minimum feasible operating temperature of the traditional lithium bromide water absorbent solutions of the prior art.Type: ApplicationFiled: June 2, 2011Publication date: December 6, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: KONSTANTINOS KONTOMARIS
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Patent number: 8302425Abstract: The invention discloses a regenerative adsorption system (50). The system includes at least two reactors (60, 70) capable of operating in an adsorption mode and a desorption mode and two liquid atomization units (62, 72) respectively in fluid communication with the reactors (60, 70). The liquid atomization units (62, 72) being capable of atomizing liquid to form adsorbate vapor or to condense desorbed vapor. In operation, the reactor in the adsorption mode adsorbs the adsorbate vapor and the reactor in the desorption mode produces desorbed vapor that is condensed by the atomised liquid.Type: GrantFiled: May 11, 2004Date of Patent: November 6, 2012Assignee: Cyclect Singapore Pte Ltd.Inventor: Hideharu Yanagi
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Publication number: 20120240605Abstract: A system, such as a thermal energy management system, is provided. The system can include an absorption module and an evaporation module. The absorption module can include at least two absorption chambers, each absorption chamber being configured to receive liquid absorbent. The evaporation module can be in independent selective fluid communication with each of the absorption chambers, and can be configured to receive and cause therein evaporation of a refrigerant.Type: ApplicationFiled: March 24, 2011Publication date: September 27, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Ching-Jen Tang, William Dwight Gerstler
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Patent number: 8141380Abstract: The purpose present invention is to provide an air refrigerant type cooling apparatus provided with an internal air cooling mechanism with high reliability and efficiency. Another object of the present invention is to provide an air refrigerant cooling/heating system with a simplified configuration using the air refrigerant type cooling apparatus. To accomplish the purpose, a heat radiating means is provided in a motor of an air refrigerant type cooling apparatus having a compressor, the motor and an expansion turbine in the present invention. Also, a pressure difference is positively generated between the inside and outside of the motor. By these means, when the motor is driven, the heat from the stator main body is exhausted to the outside of the motor through the heat radiating means and the heat from the coil end portions is exhausted through the cooling air exhausted from the inside to the outside of the motor.Type: GrantFiled: July 27, 2005Date of Patent: March 27, 2012Assignees: Mitsubishi Heavy Industries, Ltd., International Center for Environmental Technology TransferInventors: Shigemitsu Kikuchi, Seiichi Okuda
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Publication number: 20120017621Abstract: A cooling method and apparatus which uses an absorption cycle with ammonia as the refrigerant and in which a generator (31,34) converts a liquid ammonia solution into ammonia gas or vapour for supply to a condenser (36) in which the ammonia gas or vapour is condensed into a liquid ammonia solution. The liquid ammonia solution is supplied to an evaporator (39) in which liquid ammonia is evaporated into ammonia gas or vapour to thereby absorb heat and an absorber (43) absorbs the ammonia gas or vapour back into an ammonia solution. The evaporator (39) includes a reservoir or bulb (40) which retains portion of the liquid ammonia solution which is converted back into an ammonia gas or liquid by exposure to ambient heat and returned to the condenser (36) for recycling.Type: ApplicationFiled: December 3, 2009Publication date: January 26, 2012Applicant: TIGER WISE INVESTMENTS LIMITEDInventor: Graham Andrews
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Publication number: 20120000221Abstract: An absorption heat pump system that can include a first assembly, a second assembly, and a thermal coupler is disclosed herein. The first assembly can include a condenser and an evaporator. The second assembly can include an absorber, a desorber, and a heat exchanger. The thermal coupler can include a first gas inlet, a second fluid inlet, and a mixed fluid outlet. The system can be configured with a first gas outlet of the desorber in fluid communication with the first gas inlet of the thermal coupler, and the mixed fluid outlet of the thermal coupler in fluid communication with a mixed fluid inlet of the evaporator. The system can also include a coolant absorber inlet and outlet on the absorber and a coolant condenser inlet and outlet on the condenser, with the coolant absorber outlet in fluid communication with the coolant condenser inlet.Type: ApplicationFiled: July 2, 2010Publication date: January 5, 2012Inventors: Omar ABDELAZIZ, Edward Allan VINEYARD, Abdolreza ZALTASH, Kai WANG
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Publication number: 20110265509Abstract: A multiple-way valve comprises a housing (31) which is provided with a heat inlet (32) and a coolness inlet (33). The housing (31) has a discharge (34) and a supply (35) for returning to the multiple-way valve (30) liquid which has been discharged from the multiple-way valve (30). A first and second valve part (40, 44) are each movable between a first and a second position. The valve parts (40, 44) have a heat recovery position in which the coolness inlet (33) is in fluid connection to the discharge (34) via the second valve part (44), the heat inlet (32) is closed off by the first valve part (40) with respect to the discharge (34) and the supply (35) is in fluid connection to the heat outlet (36) via the first valve part (40) for letting through returned liquid from the supply (35) to the heat outlet (36).Type: ApplicationFiled: November 4, 2009Publication date: November 3, 2011Inventor: Simon Franciscus Smeding
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Publication number: 20110126563Abstract: A device, such as an absorption chiller sub-system, is provided. The absorption chiller sub-system can include an evaporator and an absorber. The evaporator can be configured to receive a liquid first working fluid and to produce first working fluid vapor. The absorber can be configured to receive and combine first working fluid vapor and a second working fluid, for example, so as to release thermal energy. A divider having opposing first and second sides in respective fluid communication with the evaporator and the absorber can also be included. The divider can be configured to allow first working fluid vapor to pass therethrough between the first and second sides and to inhibit movement of liquid first working fluid therethrough between the first and second sides. Associated systems and methods are also provided.Type: ApplicationFiled: November 30, 2009Publication date: June 2, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Ching-Jen Tang, William Dwight Gerstler, AliciA Jillian Jackson Hardy, Helge Klockow, Sherif Hatem Abdulla Mohamed, Andrew Philip Shapiro, Yogen Vishwas Utturkar, Todd Garrett Wetzel, Paul Brian Wickersham
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Publication number: 20110067426Abstract: The present disclosure relates to an apparatus for treating air. More particularly, the present disclosure provides an apparatus for treating air comprising porous organic-inorganic hybrid materials formed by binding a central metal ion with an organic ligand.Type: ApplicationFiled: December 2, 2009Publication date: March 24, 2011Inventors: Young Kyu HWANG, Jong-San Chang, Dong Won Hwang, Ji Sun Lee
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Publication number: 20110048920Abstract: An adsorption-desalination unit utilizing a silica gel—water working pair adsorbent—adsorbate having an economizing heat exchanger to pre-heat the incoming source seawater to be desalinated in an evaporator from about 8° C. to about 1° C. above the ambient seawater temperature. The economizing heat exchanger employs heat captured during the adsorption cycle to pre-heat incoming source seawater, thereby increasing the efficient use of energy in the unit. The heating fluid utilized to drive the desorption cycle is further utilized to heat the evaporator. A mist eliminator positioned intermediate the evaporator and the adsorbent heat exchanger chambers prevents non-vaporized water from entering the adsorbent heat exchanger chambers.Type: ApplicationFiled: August 28, 2009Publication date: March 3, 2011Inventors: Randall N. Avery, Charlie Booth
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Publication number: 20110005252Abstract: An object is to provide an apparatus which performs freezing and heating with a high efficiency. A compressor generates an air refrigerant with a high temperature and a high pressure by compressing the air refrigerant. As the air refrigerant is heated by a first heat exchanger and further heated by a heater, the temperature of the air refrigerant is increased to more than 200° C. in which bread and cookies can be baked, and the air refrigerant is supplied to an oven. Heat of the air refrigerant outputted from the oven is recovered by a second heat exchanger, and supplied to a high-temperature side of the first heat exchanger. The air outputted from the second heat exchanger is cooled by a cooler and a third heat exchanger, is adiabatically expanded by an expansion turbine to be cooled to ?85° C., and is supplied to a freezer. The air of the freezer is recovered to be supplied to the low-temperature side of the third heat exchanger, and then is supplied to the compressor.Type: ApplicationFiled: September 20, 2010Publication date: January 13, 2011Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., INTERNATIONAL CENTER FOR ENVIROMNENTAL TECHNOLOGY TRANSFERInventors: Seiichi OKUDA, Shigemitsu KIKUCHI
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Publication number: 20110005246Abstract: The invention relates to a method for controlling the power of a sorption refrigeration system, comprising an adsorber unit, a condenser (C), and an evaporator (E) through which a cooling carrier fluid (KT) flows, with alternating application of the adsorber unit by a valve unit (HV_IN, HV_OUT) operated via a controller, having a circuit process of at least one sorption phase and at least one heat recovery phase, wherein a measurement of a current cooling carrier outlet temperature (Takt) is carried out in the return of the evaporator, a calculation of an averaged cooling carrier outlet temperature (Tgem) is carried out during the first and second sorption phases with a comparison to the current cooling carrier outlet temperature (Takt), and a control signal is trigger upon completion of the sorption phase as a function of the difference between the averaged cooling carrier outlet temperature (Tgem) and the current cooling carrier outlet temperature (Tgem). The invention provides a corresponding device.Type: ApplicationFiled: November 19, 2008Publication date: January 13, 2011Applicant: SorTech AGInventors: Thomas Büttner, Walter Mittelbach
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Publication number: 20100326110Abstract: A cooling circuit for removing waste heat from a cooling device of an electromechanical converter is provided. The cooling circuit includes a chilling medium, a cooler for extracting heat from the chilling medium, a return connecting the cooling device of the converter to the cooler and conducts warm chilling medium, a feed connecting the cooler to the cooling device of the converter and conducts cool chilling medium, and an absorption chiller for extracting heat from the chilling medium. The absorption chiller is driven by the heat of the warm chilling medium that is in the return.Type: ApplicationFiled: June 23, 2010Publication date: December 30, 2010Inventors: Volker Amedick, Malte Blomeyer, Leandro Cravero, Eberhard Deuker, Hendrik Heitfeld, Carsten Kaufman, Meinolf Klocke, Stefan Völken
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Publication number: 20100293989Abstract: The invention relates to a compact sorption cooling unit, comprising at least one adsorber/desorber unit (1) having a heat exchanger and sorption material, at least one condenser heat exchanger (5), and at least one evaporator heat exchanger (6), wherein these building blocks are located in a common, vacuum-tight metal outer housing, and having connection and coupling elements and pipe ducts for the hydraulic interconnection and operation of the unit. The invention provides a sandwich structure, wherein the at least one adsorber/desorber unit (1) is located in an inner or partial inner housing. The condenser heat exchanger (5) and the evaporator heat exchanger (6) are disposed at a distance from each other, and the inner housing having the adsorber/desorber unit (1) is provided in the intermediate space thereof. The separating surfaces (2) of the inner housing directed toward the condenser heat exchanger (5) and toward the evaporator heat exchanger (6) receive steam valves (8, 9).Type: ApplicationFiled: January 15, 2008Publication date: November 25, 2010Applicant: SORTECH AGInventors: Thomas Buttner, Walter Mittelbach
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Publication number: 20100275623Abstract: An absorption heat pump in which to improve heat efficiency when under desorber power modulation conditions, heat is exchanged between the rich solution, before it enters the desorber, and the poor solution withdrawn from the desorber, before this poor solution is fed into the desorber.Type: ApplicationFiled: April 27, 2010Publication date: November 4, 2010Inventor: Marco GUERRA
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Publication number: 20100275622Abstract: An absorption heat pump with a system for improving its efficiency under extreme conditions by bleeding off refrigerant downstream of the condenser and mixing it with the rich solution after this latter has been at least partially heated by the absorber and before it is fed into the desorber.Type: ApplicationFiled: April 27, 2010Publication date: November 4, 2010Inventor: Marco GUERRA
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Publication number: 20100257885Abstract: A humidity control apparatus (10) alternately performs first and second operations at predetermined switching intervals. In the first operation, a first adsorption heat exchanger (51) serves as a condenser, and a second adsorption heat exchanger (52) serves as an evaporator, thereby humidifying second air by the first adsorption heat exchanger (51), and dehumidifying first air by the second adsorption heat exchanger (52). In the second operation, the second adsorption heat exchanger (52) serves as the condenser, and the first adsorption heat exchanger (51) serves as the evaporator, thereby humidifying the second air by the second adsorption heat exchanger (52), and dehumidifying the first air by the first adsorption heat exchanger (51). The switching intervals between the first and second operations are shorter in dehumidification operation of supplying the dehumidified first air to the inside of a room than in humidification operation of supplying the humidified second air to the inside of the room.Type: ApplicationFiled: October 31, 2008Publication date: October 14, 2010Inventors: Nobuki Matsui, Kikuji Hori
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Patent number: 7805960Abstract: The air conditioning system including at least one sensor of the thermal comfort of the passenger compartment of a motor vehicle, and an apparatus having at least one pair of heat-exchanger units, each designed to increase and reduce said temperature at alternating intervals under the control of the sensor. Each heat-exchanger unit comprises a substrate having the property of absorbing and releasing heat according to the absorption of a gas. The two substrates are set in two hermetic casings in communication with one another through a compressor and a series of valves, which can be actuated so as to transfer the gas alternately from one to another of the two substrates. Each heat exchanger unit also includes an outlet conveyor with an outlet opening to the passenger compartment and another outlet opening towards the outside. The two outlets are controlled by hatches that can be actuated intermittently so as to send hot air or cold air continuously into the passenger compartment.Type: GrantFiled: October 19, 2006Date of Patent: October 5, 2010Assignee: C.R.F. Societa Consortile per AzioniInventor: Daniela Magnetto
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Publication number: 20100242530Abstract: A diffusion-absorption refrigerator system (1) comprising a condenser pipe (6) passing through and surrounded by a heatsink (2), the heatsink comprising a sealed enclosure defining an internal cavity surrounding the condenser pipe for containing a heat transfer liquid, a cross-section of the heatsink transverse the condenser pipe tapering to a minimum thickness towards an upper end when oriented for use of the refrigerator system.Type: ApplicationFiled: May 22, 2008Publication date: September 30, 2010Applicant: 4ENERGY LTD.Inventors: Patrick Tindale, Stuart Peter Redshaw
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Publication number: 20100192602Abstract: An adsorption cooling system and cooling method as disclosed. An energy storage system is arranged to capture and store energy generated by the adsorption cooling system that is determined to be surplus to the energy needed to meet the current demands for cooling by the adsorption cooling system. The energy storage system is arranged to store said energy for subsequent use.Type: ApplicationFiled: November 16, 2009Publication date: August 5, 2010Applicant: G.A.H. Heating Products, Ltd.Inventors: Nicolas Brooks, Mark Holmes, John Edward Hubbard Reader
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Patent number: 7762103Abstract: The invention provides an absorption cooling system of the type including a liquid absorbent that remains in the liquid phase throughout the operation cycle, and a refrigerant having both a liquid phase and a vapor phase in the cycle, the basic system being powered by heat extracted from a hot fluid and powered auxiliary components, the system including the five basic components of a generator, an economizer, a condenser, an evaporator and an absorber, and further including a fluid circuit for the rich solution including a circulation pump, a fluid circuit for the lean solution, and for the refrigerant gas extracted from the liquid absorbent and replaced therein, partial circuits for hot fluid and for a cooling fluid, a jet mixer operating to mix saturated refrigerant gas with the lean solution to re-form the rich solution, the improvement comprising installing means for increasing the pressure of the saturated refrigerant gas flowing from the evaporator to the jet mixer.Type: GrantFiled: June 28, 2007Date of Patent: July 27, 2010Assignee: Totec Ltd.Inventor: Yehuda Artsiely
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Publication number: 20100132384Abstract: A thermal energy transfer system utilizes a composition containing one or more polyols, such as 1,3-propanediol, and one or more ionic liquids as a thermal energy transfer composition. There is also provided a method of transferring thermal energy and a process for temperature adjustment, either cooling or heating, using such a composition.Type: ApplicationFiled: April 3, 2008Publication date: June 3, 2010Inventors: Mark Brandon Shiflett, Akimichi Yokozeki
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Publication number: 20100089091Abstract: The present invention is directed to developing a new absorption refrigerating apparatus that can be miniaturized and can be mounted on a mover such as an automobile or the like. The absorption refrigerating apparatus is characterized in that a semi-permeable membrane is interposed between a refrigerant positioned in an evaporator and an aqueous solution of a moisture absorbent positioned in an absorber and/or between an aqueous solution of a moisture absorbent positioned in a regenerator and a refrigerant positioned in a condenser.Type: ApplicationFiled: February 6, 2008Publication date: April 15, 2010Inventor: Hidetoshi Kaneo
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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: 20090321053Abstract: A family of structures and designs for use in devices such as heat exchangers so as to allow for enhanced performance in heat exchangers smaller and lighter weight than other existing devices. These structures provide separate flow paths for liquid and vapor and are generally open. In some embodiments of the invention, these structures can also provide secondary heat transfer as well. In an evaporative heat exchanger, the inclusion of these structures and devices enhance the heat transfer coefficient of the evaporation phase change process with comparable or lower pressure drop.Type: ApplicationFiled: June 5, 2008Publication date: December 31, 2009Inventors: Ward E. Tegrotenhuis, Paul H. Humble, Curt A. Lavender, Dustin D. Caldwell
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Publication number: 20090255290Abstract: Methods and apparatus for separating fluids are disclosed. We have discovered that, surprisingly, providing an open pore structure between a wick and an open flow channel resulted in superior separation performance. A novel and compact integrated device components for conducting separations are also described.Type: ApplicationFiled: April 1, 2009Publication date: October 15, 2009Applicant: Battelle Memorial InstituteInventors: Ward E. TeGrotenhuis, Paul H. Humble, Dustin D. Caldwell
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Publication number: 20090249825Abstract: A chemical heal pump includes a reactor part (1) that contains an active substance and an evaporator/condenser part (3) that contains that portion of volatile liquid that exists in a condensed state and can be absorbed by the active substance. A channel (4) interconnects the reactor part and the evaporator/condenser part, In at least the reactor part a matrix (13) is provided for the active substance so that the active substance both in its solid state and its liquid state or its solution phase is hold or carried by or bonded to the matrix. The matrix is advantageously an inert material such as aluminium oxide and has pores, which are permeable for the volatile liquid and in which the active substance is located. In particular, a material can be used that has a surface or surfaces, at which the active substance can be bonded in the liquid state thereof. For example, the matrix can be a material comprising separate particles such as a powder or a compressed fibre material.Type: ApplicationFiled: May 29, 2007Publication date: October 8, 2009Applicant: Climatewell ABInventors: Ray Olsson, Goran Bolin
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Publication number: 20090199578Abstract: 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. One of the dipoles may be regenerated from a heat source at the temperature Th and a heat sink at To, and produce refrigeration at the temperature Tf with a heat sink at a temperature below the ambient temperature To. The other dipole may be regenerated from a heat source at the temperature Th and a heat sink at the temperature To.Type: ApplicationFiled: November 3, 2005Publication date: August 13, 2009Inventors: Driss Stitou, Nathalie Mazet, Bernard Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Bruno Spinner, Martin Spinner, Camille Spinner
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Publication number: 20080202132Abstract: The invention relates to refrigeration using a thermochemical system based on the coupling of two reversible physico-chemical phenomena between a gas and a solid or liquid sorbent, one at low temperature (the LT phenomenon) and the other at a higher temperature (the HT phenomenon). The LT phenomenon is a liquid/gas phase change of the fluid G or an absorption of the fluid G by a liquid sorbent. The HT phenomenon is a reversible sorption of the fluid G by a liquid or solid sorbent. The endothermic phase of the LT phenomenon takes place in a reactor thermally isolated from the ambient environment. The exothermic phase of the LT phenomenon takes place in a condenser in communication with the reactor in which the HT phenomenon takes place, the condensed fluid G then being transferred to the reactor in which the endothermic phase of the LT phenomenon takes place.Type: ApplicationFiled: March 12, 2004Publication date: August 28, 2008Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Driss Stitou, Olivier Bertrand, Bernard Spinner, Bruno Spinner, Caroline Spinner Brossard, Anne Christel Spinner Kohler, Nathalie Mazet, Martin Spinner
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Publication number: 20080190133Abstract: The invention teaches an automatic discharge device for a lithium bromide absorption chiller unit, comprising an automatic pump apparatus, a pump chamber, a gas-liquid separation chamber, and a gas storage chamber. A valve F1 is disposed at the outlet line of the liquid pump. A valve F2 and a gas discharge and liquid feed line disposed between the liquid pump and the valve F1 are connected to the gas storage chamber. A valve F3 is set on the gas duct and liquid return line between the gas storage chamber and the gas-liquid separation chamber. A liquid choke self-closing discharge rubber ball valve, a one-way spring discharge valve, and additionally, an electromagnetic valve or a motorized valve are set on top of the gas storage chamber. The invention simplifies effectively the chiller construction and increases operational reliability.Type: ApplicationFiled: April 16, 2008Publication date: August 14, 2008Inventor: Yue ZHANG
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Patent number: 7273672Abstract: The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack 21 formed by laminating a plurality of fuel cell units each of which includes a fuel electrode 23, an oxidant electrode 24, and a solid polymer electrolyte membrane 22 interposed between the fuel and oxidant electrodes. The fuel cell unit is operable to generate an electric power through an electrochemical reaction between a first gas supplied to the side of the fuel electrode 23 and a second gas supplied to the side of the oxidant electrode 24. In this fuel cell, the first gas supplied to the side of the fuel electrode 23 and the second gas supplied to the side of the oxidant electrode 24 are adapted to flow generally in opposite directions in the fuel cell stack 21, so that a water created on the side of oxidant electrode 24 is reciprocally moved between the fuel electrode 23 and the oxidant electrode 24 to increase a water holding region in the solid polymer electrolyte membrane 22.Type: GrantFiled: March 13, 2003Date of Patent: September 25, 2007Assignee: Japan Aerospace Exploration AgencyInventors: Yoshitsugu Sone, Mitsushi Ueno, Saburou Kuwashima
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Patent number: 7228709Abstract: A unitary air conditioning system comprises an outdoor unit including a compressor for compressing a refrigerant, an outdoor heat exchanger for heat exchange of the refrigerant and an expander connected to the outdoor heat exchanger, for expanding the refrigerant; a duct installed inside a zone of a building; a central blower unit having a heat exchanger connected to the outdoor unit through a first refrigerant pipe and a blower for supplying the air heat-exchanged by the heat exchanger to the duct; and an individual blower unit including a heat exchanger connected to the outdoor unit through a second refrigerant pipe and a fan for sending the air heat-exchanged by the heat exchanger and disposed in a zone in the building, for individually cooling or heating the zone.Type: GrantFiled: January 12, 2005Date of Patent: June 12, 2007Assignee: LG Electronics Inc.Inventors: Yoon-Jei Hwang, Chan-Ho Song, Won-Hee Lee
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Patent number: 6910349Abstract: A dual centrifugal compressor refrigeration system has one evaporator for both compressors. The evaporator provides the centrifugal compressors with refrigerant vapor through separate suction connections for each compressor. Each suction connection has a protrusion that extends into the evaporator vessel to disturb the axial flow of refrigerant vapor in the evaporator vessel. The disturbance of the axial flow of refrigerant vapor in the evaporator vessel permits a surging compressor to draw refrigerant vapor in order to recover from the surge condition.Type: GrantFiled: August 4, 2003Date of Patent: June 28, 2005Assignee: York International CorporationInventors: Mark Robinson Bodell, II, Dennis L. Deitz, Jr., Russell Mark Thompson
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Patent number: 6904768Abstract: An absorption-type air conditioner system using lithium bromide solution as absorbent is provided, which has a small volume and compact structure. The system includes upper vessel 26, lower vessel 27, cooling heat exchanger 10, self-induced air circulation device 11, outdoor system controller 9 and water heater 8. Upper vessel 26 includes high temperature generator 1, low temperature generator 2 and condenser 3. The lower vessel 27 includes high temperature heat exchanger 4, low temperature heat exchanger 5, evaporator 7 and absorber 6. Upper vessel 26 is connected to lower vessel 27 by refrigerant water outlet pipe 28, LTG dilute solution inlet pipe 29, LTG concentrate solution outlet pipe 30, HTG dilute solution inlet pipe 31, HTG concentrate solution outlet pipe 32, HTG steam outlet pipe 56, heating steam switch valve 55 and HTG steam inlet pipe 57. The system is an ideal central air conditioner system for large houses.Type: GrantFiled: April 29, 2004Date of Patent: June 14, 2005Inventor: Yue Zhang
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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: 6845631Abstract: An absorption refrigerator (1) including a cabinet having outer walls (2, 3, 4, 5, 6) and at least one door (7, 8) encasing a low temperature storage compartment (9) and a higher temperature storage compartment (10), said compartments being essentially sealed from each other and separated by a partition wall (11), which partition wall is arranged inside the cabinet and generally perpendicular to a first wall (2) of said outer walls. The refrigerator further comprises an absorption refrigerating system including an evaporator tube (20), having a first section (21) for absorbing heat from the low temperature compartment and a second section (22) for absorbing heat from the higher temperature compartment, said second section being arranged downstream said first section. In order to reduce heat transfer into the cabinet through the outer walls, a major part of the first section is arranged generally in parallel with said partition wall.Type: GrantFiled: July 15, 2003Date of Patent: January 25, 2005Assignee: Dometic Sweden ABInventors: Anders Bengt Ingemar Hallin, Johnny Kornelind
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Patent number: 6629432Abstract: The thermal regenerative compressive device 20 has a plurality of sorbent vessels 10 arranged circumferentially about a rotational axis X partly within a toroidal conduit 21. A heat carrier fluid flows from an inlet 22 of the conduit to the outlet 23 in counterflow with respect to the rotational movement of the sorbent vessels 10. Separate fluid channels 29, 30 encase the evaporation/condensation zones 15 of the vessels 10 to enable transfer of heat between the vessels 10 and the fluid flowing in channels 29 and 30. With the compressive device 20 heat is regenerated in a particularly simple and convenient manner. As a result the compressive device is capable of achieving greater efficiencies than existing adsorption devices.Type: GrantFiled: March 21, 2002Date of Patent: October 7, 2003Assignee: University of WarwickInventor: Robert Edward Critoph
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Patent number: 6213197Abstract: A sorption unit for air-conditioning technology apparatus with sheets for heat emission, past which water vapor is passed. The sheets are provided with zeolite, that forms string-shaped profiled bodies which are designed to have surface contact with the sheets. Channels for vapor passage are defined between bodies arranged one beside the other. A buffer section and a condenser/evaporator unit complete the sorption unit to form an air-conditioning system.Type: GrantFiled: July 10, 1998Date of Patent: April 10, 2001Assignee: Electrolux Leisure Appliances AGInventor: Bengt Ebbeson
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Patent number: 5941093Abstract: In a sorption device with orbiting sorption containers (16) and a heat transfer medium radially flowing therearound, the individual flow regions are mutually sealed by lips (36) resting against outer and/or inner margins, respectively, of the sorption containers. The sorption containers include a heater absorber part and a condensation-evaporation part. As heating device for the heat transfer medium flowing around the heater absorber parts, a heating tube (40) which transfers the heat using ribs (41) to the heat transfer medium can be used.Type: GrantFiled: February 17, 1998Date of Patent: August 24, 1999Assignee: Electrolux Leisure Appliances AGInventor: Ebbeson Bengt
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Patent number: 5901572Abstract: An auxiliary heating and air conditioning system has an output for selectively delivering warm air and cool air to the passenger area of a motor vehicle. The auxiliary system includes a thermo-electric cooler, which is a solid state device having a hot side and a cold side. Heat exchangers are disposed in connection with the hot side and cold side of the thermo-electric cooler to facilitate the transfer of thermal energy away from each side of the thermo-electric cooler. Two fans are disposed in fluid communication with the first and second heat exchangers to transfer air across the exchangers and to the output for selectively heating and cooling the passenger area of the motor vehicle. Interposed between the first and second heat exchangers and the output, are first and second arrays of energy storage panels. Preferably, these panels contain phase change material which is charged during the operation of the motor vehicle to change phase and therefore store thermal energy.Type: GrantFiled: December 7, 1995Date of Patent: May 11, 1999Assignee: Rocky ResearchInventors: Larry Peiffer, Terry Zeigler, William G. Guo
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Patent number: 5676202Abstract: In a heat exchanger according to the present invention, there are provided a filling container having a first containing section containing a hydrogen-absorbing metal material for middle or high temperature, a second containing section containing a hydrogen-absorbing metal material for low temperature which is higher in equilibrium hydrogen pressure at the same temperature than the hydrogen-absorbing metal material for middle or high temperature, and a hydrogen passage for moving hydrogen between the first containing section and the second containing section; a guiding section having a heating section provided with heating means for heating the filling container, a heat radiating section provided with a heat exchanging section for radiating heat generated in the filling container outward, and a heat absorbing section provided with a heat exchanging section for cooling the outside by absorption of heat in the filling container; and moving means for moving the filling container back and forth in the guiding secType: GrantFiled: October 23, 1995Date of Patent: October 14, 1997Assignee: Sanyo Electric Co., Ltd.Inventors: Koji Akashi, Naoki Hiro, Kenji Nasako, Teruhiko Imoto, Koichi Nishimura, Ikuo Yonezu
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Patent number: 5503222Abstract: A carousel heat exchanger is provided for air conditioning or waste heat recovery applications. The carousel heat exchanger includes a plurality of heater tubes disposed radially about a rotational axis. Each of the heater tubes is sealed and has a hollow bore which is uniformly lined with a solid adsorbent and contains a refrigerant. A baffle is disposed about the rotational axis such that to the heater tubes extend transversely therethrough. The baffle defines an outer zone to the outside of the baffle and an inner zone to the inside of the baffle and divides the heater tubes into a first internal zone of the heater tubes located in the outer zone and a second internal zone of the heater tubes located in the inner zone. A plurality of vanes is disposed radially along the rotational axis. The vanes extend transversely from both sides of the baffle, defining a plurality of axial flow segments that subdivide the inner and outer zones.Type: GrantFiled: July 28, 1994Date of Patent: April 2, 1996Assignee: UOPInventor: Stephen R. Dunne