Diverse Fluids Patents (Class 62/502)
  • Patent number: 9219404
    Abstract: This waste heat power generator (G) includes: an evaporator (1) to recover heat energy and to produce a vapor of a working medium; a power-generating device (2) to generate electric power while expanding the vapor; a condenser (3) to condense the vapor which has passed through the power-generating device; a pump (4) to send the working medium which has been condensed at the condenser to the evaporator; and a grease supply device (5) to supply the power-generating device with a grease used to lubricate bearings provided in the power-generating device.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: December 22, 2015
    Assignee: IHI CORPORATION
    Inventors: Toshio Takahashi, Hirohisa Wakisaka
  • Publication number: 20150096312
    Abstract: A composition including 2,3,3,4,4,4-hexafluorobut-1-ene as a mixture with one or more hydrocarbon, hydrofluorocarbon, ether, hydrofluoroether or fluoroolefin compounds having a boiling point of less than or equal to 0° C. Also, the use of such a composition in heat transfer applications. Also, a heat transfer installation including a vapor compression circuit containing such a composition as heat-transfer fluid or containing a heat-transfer composition including such a composition, and also one or more additives chosen from lubricants, stabilizers, surfactants, tracers, fluorescers, odorous agents and solubilizers, and mixtures thereof.
    Type: Application
    Filed: March 29, 2013
    Publication date: April 9, 2015
    Inventor: Wissam Rached
  • Publication number: 20150033770
    Abstract: A nonflammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture consists essentially of (a) from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125 (d) from 25.5 weight percent to 30 weight percent HFC-134a, and (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g. lubricants), in processes to produce cooling, in methods for replacing refrigerant R-404A or R-507, and in refrigeration apparatus.
    Type: Application
    Filed: February 12, 2013
    Publication date: February 5, 2015
    Inventor: Barbara Haviland Minor
  • Publication number: 20150033780
    Abstract: In a case of a heating operation in which the use side heat exchanger functions as a condenser when an outside temperature is a predetermined low temperature, a low-outside-temperature heating operation start-up mode in which, while a refrigerant discharged from the compressor is caused to flow into the use side heat exchanger, a refrigerant is supplied to the injection port of the compressor via the injection pipe and part of the refrigerant that has transferred heat in the heat source side heat exchanger is supplied to the compressor, is followed by a low-outside-temperature heating operation mode in which the refrigerant discharged from the compressor is supplied to the injection port of the compressor via the injection pipe while the refrigerant being caused to flow into the use side heat exchanger.
    Type: Application
    Filed: April 27, 2012
    Publication date: February 5, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takeshi Hatomura, Koji Yamashita, Naofumi Takenaka
  • Patent number: 8940180
    Abstract: The present invention relates, in part, to heat transfer and refrigerant compositions and methods that include HFC-32; HFO-1234ze and HFC-125.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 27, 2015
    Assignee: Honeywell International Inc.
    Inventors: Samuel F. Yana Motta, Mark W. Spatz, Elizabet Del Carmen Vera Becerra, Ankit Sethi, Thomas Morris
  • Publication number: 20150013353
    Abstract: The invention relates to a compressor-heat exchanger unit for a heating-cooling module for a motor vehicle, in which at least one fluid serving as a coolant flows, comprising a compressor device for compressing the first fluid, at least one heat exchanger device that has at least one first circuit for the first fluid to flow through and a second circuit for a second fluid to flow through, this heat exchanger unit being arranged in the fluid stream after the compressor device, characterised in that the first fluid is guided at least partially in flow channels of the first circuit that at least partially enclose the compressor device.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 15, 2015
    Inventors: Uwe Becker, Jens Dittmar, Tilo Schaefer, Gholam Reza Zakeri
  • Patent number: 8845922
    Abstract: The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane. Further, the compositions can be azeotropic or azeotrope-like.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 30, 2014
    Assignee: Honeywell International Inc.
    Inventors: Rajiv Ratna Singh, Ryan Hulse
  • Patent number: 8800310
    Abstract: A turbo compressor to suction and compress gas includes a housing including a flow passageway through which gas flows, an impeller disposed inside the flow passageway, the impeller providing suction for the gas by being rotationally driven, a liquid discharge port provided in the flow passageway on the upstream side of the impeller, the liquid discharge port discharging, from the flow passageway, any liquid produced as the gas liquefies when the turbo compressor is stopped, a liquid discharge pipe connected to the liquid discharge port, an electromagnetic valve connected to the liquid discharge pipe, and a controller configured to open the electromagnetic valve before the impeller is rotationally driven. A refrigerator includes the turbo compressor, wherein the turbo compressor compresses refrigerant gas.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: August 12, 2014
    Assignee: IHI Corporation
    Inventor: Noriyasu Sugitani
  • Publication number: 20140102130
    Abstract: A mechanical leverage system comprising an expansive side and a compressive side, wherein the compressive side comprises a compressor which is in controlled fluid communication with a first evaporator and a first condenser, wherein the expansive side comprises an expander which is in controlled fluid communication with a second evaporator and a second condenser, wherein the second evaporator absorbs heat from a space such as an attic and drives the expander, and thus, the compressor to which the expander is connected, and wherein there is a difference between the properties of the refrigerant used in the expansive side and the compressive side, such that the difference in refrigerant properties influences the mechanical advantage ratio of the system.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 17, 2014
    Inventor: Arthur F. Hurtado
  • Patent number: 8591761
    Abstract: An apparatus is provided that includes a device and a mechanism for heat transfer that includes a provided hydrofluoroether having high temperature stability. Also provided is a method of transferring heat and a composition that includes a provided hydrofluoroether.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: November 26, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, Michael G. Costello, Michael J. Bulinski
  • Publication number: 20130174594
    Abstract: An air-conditioning apparatus includes a heat medium circuit with a heat medium flow reversing device that can switch the flow direction of a heat medium in the heat medium side passage of the heat exchanger related to heat medium.
    Type: Application
    Filed: November 10, 2011
    Publication date: July 11, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Yamashita, Shinichi Wakamoto, Naofumi Takenaka
  • Publication number: 20130160478
    Abstract: This invention relates to a method for producing heating in a high temperature heat pump. The method comprises condensing a vapor working fluid comprising E-HFO-1438mzz and optionally HFC-245eb, in a condenser, thereby producing a liquid working fluid. This invention also relates to a method of raising the maximum feasible condenser operating temperature in a high temperature heat pump apparatus. This method comprises charging the high temperature heat pump with a working fluid comprising E-HFO-1438mzz and optionally HFC-245eb. This invention also relates to a high temperature heat pump apparatus containing a working fluid comprising E-HFO-1438mzz and optionally HFC-245eb. This invention also relates to a composition comprising: (i) E-HFO-1438mzz and HFC-245eb; and (ii) a stabilizer to prevent degradation at temperatures of 55° C. or above, (iii) a lubricant suitable for use at 55° C. or above, or both (ii) and (iii).
    Type: Application
    Filed: December 20, 2012
    Publication date: June 27, 2013
    Applicant: E I Du Pont De Nemours And Company
    Inventor: E I Du Pont De Nemours And Company
  • Publication number: 20130133361
    Abstract: An air-conditioning apparatus once transfers energy to a heat medium other than a refrigerant and introduces the heat medium to another refrigeration cycle to achieve safety improvement and high efficiency. An air-conditioning apparatus allows first heat exchangers related to heat medium to exchange heat between a first refrigerant (heat source side refrigerant) and a first heat medium and allows a second heat exchanger related to heat medium to exchange heat between the first heat medium and a second refrigerant (hot water supply side refrigerant), such that the first refrigerant and the second refrigerant are prevented from mixing with each other.
    Type: Application
    Filed: September 10, 2010
    Publication date: May 30, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Koji Yamashita, Junichi Ue, Hiroyuki Morimoto
  • Publication number: 20130111935
    Abstract: A system (200; 250; 270) has a compressor (22), a heat rejection heat exchanger (30), first (38) and second (202) ejectors, first (64) and second (220) heat absorption heat exchangers, and a separator. The ejectors each have a primary inlet (40, 204) coupled to the heat rejection exchanger to receive refrigerant. A second heat absorption heat exchanger (220) is coupled to the outlet of the second ejector to receive refrigerant. The separator (48) has an inlet (50) coupled to the outlet of the first ejector to receive refrigerant from the first ejector. The separator has a gas outlet (54) coupled to the secondary inlet (206) of the second ejector to deliver refrigerant to the second ejector. The separator has a liquid outlet (52) coupled to the secondary inlet (42) of the first ejector via the first heat absorption heat exchanger to deliver refrigerant to the first ejector.
    Type: Application
    Filed: July 20, 2011
    Publication date: May 9, 2013
    Applicant: CARRIER CORPORATION
    Inventors: Jiang Zou, Hongsheng Liu, Parmesh Verma Verma, Thomas D. Radcliff, Jinliang Wang
  • Publication number: 20130067951
    Abstract: A waste heat utilization device for an air compressor includes: a discharge path of an oil free air compressor; a circulation path along which a low boiling point medium circulates; an evaporator provided on the circulation path to heat and evaporate the low boiling point medium using the potential heat of the compressed air; and a preheater provided on an upstream side of the evaporator to preheat the low boiling point medium using the potential heat of the compressed air. A scroll type expansion machine is rotated by the low boiling point medium evaporated by the evaporator and increased in pressure, and power is generated by a power generator connected to a rotary shaft of the scroll type expansion machine. The low boiling point medium discharged from the scroll type expansion machine is then cooled and condensed by a condenser.
    Type: Application
    Filed: August 16, 2012
    Publication date: March 21, 2013
    Applicant: ANEST IWATA CORPORATION
    Inventors: Tamotsu FUJIOKA, Atsushi UNAMI
  • Publication number: 20130061630
    Abstract: In an evaporator having plate-type construction, a plurality of stack plates are stacked atop one another such that a first fluid passage for a first fluid as a refrigerant and a second fluid passage for a second fluid as a coolant is provided and are formed between the stack plates. The stack plates have first apertures for supply and return of the first fluid, second apertures for supply and return of the second fluid, a first inlet opening and outlet opening for entry and exit of the first fluid, a second inlet opening and outlet opening for entry and exit of the second fluid, and an expansion valve for the first fluid that is built onto or integrated into the rest of the heat exchanger. The evaporator incorporates a shutoff unit for the first fluid that is built onto or integrated into the rest of the heat exchanger.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 14, 2013
    Inventors: Bernd SCHAEFER, Markus Wesner
  • Publication number: 20120324926
    Abstract: The invention relates to a method of heat transfer by means of a vapor compression circuit containing a heat transfer fluid, said method including, consecutively, evaporating the heat transfer fluid, compressing the heat transfer fluid, condensing the heat transfer fluid to a temperature greater than or equal to 70? C., and decompressing the heat transfer fluid. In said method, the heat transfer fluid includes 1,1,1,3,3-pentafluorobutane and 1,1,1,3,3-pentafluoropropane, the compounding weight ratio of 1,1,1,3,3-pentafluorobutane in the fluid being no higher than 20%. The invention also relates to a heat transfer fluid suitable for implementing said method and to a facility that is also suitable for implementing said method.
    Type: Application
    Filed: February 15, 2011
    Publication date: December 27, 2012
    Applicant: Arkema France
    Inventors: Wissam Rached, Laurent Abbas
  • Publication number: 20120304687
    Abstract: Use of a double bond-containing hydrofluoroolefin refrigerant causes a problem that it generates hydrogen fluoride by cleavage and decomposition under influence of oxygen, leading to degradation of the materials and the refrigeration oil used in the refrigeration apparatus and causing troubles in the refrigeration apparatus. It is possible to provide a high-reliability longer-lasting refrigeration apparatus by inexpensive method, by using a double bond-containing hydrofluoroolefin refrigerant in a refrigerating cycle having a refrigerant circulation route extending from a compressor 1, via a condenser 2, an expansion mechanism 3, and an evaporator 4, back to the compressor 1 that contains an ester-based refrigeration oil containing an unsaturated fatty acid as a constituent fatty acid.
    Type: Application
    Filed: July 28, 2010
    Publication date: December 6, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shigehiro Sato, Kenji Takaichi
  • Patent number: 8323524
    Abstract: An apparatus is provided that includes a device and a mechanism for heat transfer that includes a provided hydrofluoroether having high temperature stability. Also provided is a method of transferring heat and a composition that includes a provided hydrofluoroether.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: December 4, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Richard M. Flynn, Michael G. Costello, Michael J. Bulinski
  • Patent number: 8291723
    Abstract: A refrigeration system having a main circuit including a main compressor thermally coupled with a secondary or subcooling circuit. The main circuit uses a R125/R143A blend as a refrigerant and the subcooling circuit uses an R32 blend. The combined system of differing refrigerants provides increased efficiencies and reduced Global Warming Potential (GWP) over single refrigerant systems for low and medium temperature refrigeration applications.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: October 23, 2012
    Assignee: BMIL Technologies, LLC
    Inventor: Thomas J. Backman
  • Publication number: 20120240606
    Abstract: The present invention relates to refrigerant compositions containing trans-chloro-3,3,3-trifluoropropene (1233zd(E)) useful for chiller applications and processes using 1233zd(E).
    Type: Application
    Filed: December 14, 2009
    Publication date: September 27, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ryan Hulse, Rajiv Ratna Singh, Mark W. Spatz
  • Publication number: 20120144857
    Abstract: The invention relates to binary compositions of 2,3,3,3-tetrafluoropropene and difluoromethane, as a heat transfer fluid in compression, low-temperature and average temperature refrigeration systems, with exchangers operating in counterflow mode or in split flow mode with counterflow tendency. The invention also relates to a heat transfer method.
    Type: Application
    Filed: August 17, 2010
    Publication date: June 14, 2012
    Applicant: Arkema France
    Inventor: Wissam Rached
  • Publication number: 20120017614
    Abstract: Nanofluids for vapor compression systems is a new invention to enable vapor compression systems used in air conditioning and refrigeration systems to take advantage of nanoparticles. Prior work has already shown that using nanoparticles is an excellent method to improve heat transfer in water, ethylene glycol, and engine oil applications. This invention is a method and apparatus for using nanofluids that will increase the heat transfer in the condenser of vapor compression systems; thereby, reducing power consumption. The system uses nanoparticles in the condenser to increase heat transfer and reduce the condensing pressure thereby saving energy.
    Type: Application
    Filed: July 21, 2010
    Publication date: January 26, 2012
    Inventor: Edward Vincent Clancy
  • Patent number: 7972529
    Abstract: A lubricant oil for a refrigeration machine, and refrigeration machine, said refrigeration machine being of the type that operates with a refrigerant consisting of at least one component of the HC (hydrocarbon) group, the lubricant oil consisting of an alkylbenzene oil containing at least 80% by weight of alkylbenzene having a molecular weight of 120-288 and having a viscosity between about 3.0 and 7.0 cSt at a temperature of 40° C. and the lubricant composition consisting of said alkylbenzene oil and until about 8% by weight of one or more additives selected from a group consisting of improvers of oxidation resistance and thermal stability, corrosion inhibitors, metal inactivators, lubricity additives, viscosity index improvers, reducers of fluidity and flocculation point, detergents, dispersants, antifoaming agents, antiwear agents and extreme pressure resistant additives.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: July 5, 2011
    Assignee: Whirlpool S.A.
    Inventor: Rosangela Maria Machado
  • Publication number: 20110079043
    Abstract: An apparatus is provided that includes a device and a mechanism for heat transfer that includes a provided hydrofluoroether having high temperature stability. Also provided is a method of transferring heat and a composition that includes a provided hydrofluoroether.
    Type: Application
    Filed: October 1, 2009
    Publication date: April 7, 2011
    Inventors: Richard M. Flynn, Michael G. Costello, Michael J. Bulinski
  • Patent number: 7845190
    Abstract: A transcritical vapour compression refrigeration apparatus including: a compressor, a gas cooler, an economiser, an evaporator and a refrigerant; the refrigerant being compressed in the compressor, heat being rejected from the compressed refrigerant at supercritical pressure in the gas cooler, the cooled compressed refrigerant being then expanded in a first stage to first temperature and pressure conditions in the economiser and then expanded in a second stage to second temperature and pressure conditions; a stream of refrigerant from the economiser at said first temperature and pressure conditions then being compressed in a first stream in the compressor, refrigerant at said second temperature and pressure conditions absorbing heat in the evaporator and then being compressed in a separate second stream in the compressor; said first and second compressed streams then being combined before passing to the gas cooler or passing through separate gas coolers before being combined.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: December 7, 2010
    Assignee: Star Refrigeration Limited
    Inventor: Stephen Forbes Pearson
  • Patent number: 7758768
    Abstract: A lubricant oil for a refrigeration machine, lubricant composition and refrigeration machine and system, said refrigeration machine and system being of the type that operates with a refrigerant consisting of at least one component of the HC (hydrocarbon) group, the lubricant oil consisting of an alkylbenzene oil containing at least 80% by weight of alkylbenzene having a molecular weight of 120-288 and having a viscosity between about 3.0 and 7.0 cSt at a temperature of 40° C. and the lubricant composition consisting of said alkylbenzene oil and until about 8% by weight of one or more additives selected from a group consisting of improvers of oxidation resistance and thermal stability, corrosion inhibitors, metal inactivators, lubricity additives, viscosity index improvers, reducers of fluidity and flocculation point, detergents, dispersants, antifoaming agents, antiwear agents and extreme pressure resistant additives.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 20, 2010
    Assignee: Whirlpool S.A.
    Inventor: Rosangela Maria Machado
  • Publication number: 20100154444
    Abstract: The present invention relates to refrigerant compositions containing trans-chloro-3,3,3-trifluoropropene (1233zd(E)) useful for chiller applications and processes using 1233zd(E).
    Type: Application
    Filed: December 14, 2009
    Publication date: June 24, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Ryan Hulse, Rajiv Ratna Singh, Mark W. Spatz
  • Publication number: 20100024453
    Abstract: A mixed refrigerant including a plurality of component refrigerants circulates in a refrigeration cycle device. An expansion valve includes a power element. A filled fluid filled in the power element is one component refrigerant in the plurality of component refrigerants. A slope of a saturated vapor pressure curve of the filled fluid is larger than the slope of the saturated vapor pressure curve SV0 of the mixed refrigerant. Thereby, an opening degree of the expansion valve can be prevented from exceeding in a low-temperature region, and the opening degree corresponding to a load can be obtained in a high-temperature region.
    Type: Application
    Filed: July 16, 2009
    Publication date: February 4, 2010
    Applicant: DENSO CORPORATION
    Inventors: Hideya Matsui, Haruyuki Nishijima, Etsuhisa Yamada
  • Publication number: 20100019190
    Abstract: A process for obtaining low temperature refrigeration in an existing or new low temperature refrigeration system designed to operate with, or suitable for use with, or capable of being used with HCFC-22 as the refrigerant, the refrigerant composition being a refrigerant composition comprising difluoromethane (HFC-32), pentafluoroethane (HFC-125) and tetrafluoroethane (HFC134a), the three components being present in the composition in amounts such that the operating characteristic of the refrigerant composition in regard to superheat is provided at an acceptable level and the operating characteristics of the refrigerant composition in regard to cooling capacity, mass flow and efficiency (COP) characteristics, when employed as the refrigerant in a low temperature refrigeration system, are each at least 95% of the operating characteristics of chlorodifluoromethane (HCFC-22) if HCFC-22 were to be employed as the refrigerant in such low temperature refrigeration system.
    Type: Application
    Filed: July 15, 2004
    Publication date: January 28, 2010
    Inventor: Mark W. Spatz
  • Publication number: 20090301108
    Abstract: A multi-refrigerant cooling system comprising a cooling circuit (100) for circulation of a refrigerant mixture. The cooling circuit comprises, i.a., one or more separator(s) (102, 103) configured to separate and withdraw a respective refrigerant fraction of the refrigerant mixture. Each separator is connected to a respective holding tank (201, 202). Each holding tank is further connected to the cooling circuit via a supply conduit (207), the supply conduit being configured to supply one or more refrigerant fraction(s) to the cooling circuit. Method for adjusting the composition of a refrigerant mixture of a multi-refrigerant cooling system. The method allows adjustment of the composition of the refrigerant mixture during operation of the multi-refrigerant cooling system.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 10, 2009
    Applicant: ALSTOM Technology Ltd
    Inventor: Wolfgang G. Hees
  • Publication number: 20090277194
    Abstract: The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises a fluoroolefin and at least one other component. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and fire suppression and fire extinguishing agents.
    Type: Application
    Filed: June 17, 2009
    Publication date: November 12, 2009
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Barbara Haviland Minor, Velliyur Nott Mallikarjuna Rao, Donald Bernard Bivens, Deepak Perti, Mark Steven Baunchalk
  • Publication number: 20090260389
    Abstract: A refrigeration unit comprises a CO2 refrigeration circuit having a CO2 compression stage in which CO2 refrigerant is compressed, a CO2 condensation stage having a tank in which CO2 refrigerant is accumulated in a liquid state, at least one of pressuring means and an expansion stage to direct the CO2 refrigerant from the CO2 condensation stage to a CO2 evaporation stage in which CO2 refrigerant absorbs energy to refrigerate. A condensation circuit has a second refrigerant being circulated between a second compression stage, a second condensation stage, a second expansion stage and a second evaporation stage. A heat-exchanger unit by which the CO2 refrigerant from the CO2 refrigeration circuit is in heat exchange with the second refrigerant in the second evaporation stage such that the second refrigerant absorbs heat from the CO2 refrigerant to at least partially liquefy the CO2 refrigerant for the CO2 condensation stage.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 22, 2009
    Inventor: Serge DUBE
  • Publication number: 20090211293
    Abstract: An air conditioning system for circulating a refrigerant includes a condenser having a vapor inlet for condensing the refrigerant into a high-pressure liquid having a first predetermined temperature. A heat exchanger including an exhaust channel directs air therethrough. The heat exchanger further includes a refrigerant inlet in fluid communication with a refrigerant outlet for receiving a high-pressure liquid and for delivering the high-pressure liquid therethrough. Furthermore, a heat mass exchanger outputs wet working air having a second predetermined temperature. The heat exchanger is in fluid communication with the heat mass exchanger for receiving the working air having a temperature less than the high-pressure liquid. The working air flows through the exhaust channel and over the high-pressure liquid to transfer heat from the high-pressure liquid to the working air for reducing the temperature of the high-pressure liquid.
    Type: Application
    Filed: February 25, 2008
    Publication date: August 27, 2009
    Inventors: Edward Wolfe, IV, Ilya Reyzin, Lindsey Lee Leitzel
  • Publication number: 20090133424
    Abstract: An R-410A DX heating/cooling system with: an electrical generating expansion device; with a protective means for refrigerant transport tubing containing dissimilar metals and/or in corrosive environments; with an automatic heating mode expansion device; with a TXV by-pass design; with retractable sub-surface tubing designs; with sub-surface line set sizing at varying depths and lengths; with reciprocal compressor sizing; with a DX Hydronic system design; with an improved oil separator float design; with a mobile DX system design; and with a resting module DX system design.
    Type: Application
    Filed: July 16, 2008
    Publication date: May 28, 2009
    Applicant: EARTH TO AIR SYSTEMS, LLC
    Inventor: B. Ryland Wiggs
  • Publication number: 20090095014
    Abstract: There is a working fluid for a heating and cooling. The fluid is a blend of from about 1% to about 98% by weight 1,1,1,2,3,3,3-heptafluoropropane, from about 1% to about 98% by weight 1,1,1,3,3,3-hexafluoropropane, and from about 1% to about 98% by weight 1,1,1,2-tetrafluoroethane. The 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,3,3,3-hexafluoropropane, and 1,1,1,2-tetrafluoroethane are from about 90% or more by weight of the blend. There are also an apparatus that uses the blend and methods for heating and cooling using the blend.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 16, 2009
    Inventors: Andrew Sun, Ke Zhang
  • Publication number: 20090084129
    Abstract: A heat exchanger including a plurality of first refrigerant tubes, and a plurality of second refrigerant tubes separated from the plurality of first refrigerant tubes in an air flow direction. Further, a diameter of a respective refrigerant tube of the plurality of first refrigerant tubes is smaller than a diameter of a respective refrigerant tube of the plurality of second refrigerant tubes.
    Type: Application
    Filed: August 29, 2008
    Publication date: April 2, 2009
    Inventors: Dong Hwi Kim, Yong Cheol Sa, Han Choon Lee, Sang Yeul Lee, Ju Hyok Kim, Hong Seong Kim
  • Publication number: 20090049856
    Abstract: There is a working fluid for a heating and cooling. The fluid is a blend of about 1% to about 98% by mass 1,1,1,3,3-pentafluoropane, about 1% to about 98% by mass 1,1,1,2,3,3-hexafluoropropane, and about 1% to about 98% by mass 1,1,1,2-tetrafluoroethane. The 1,1,1,3,3-pentafluoropane, 1,1,1,2,3,3-hexafluoropropane, and 1,1,1,2-tetrafluoroethane are about 90% or more by mass of the blend. There are also an apparatus that uses the blend and methods for heating and cooling using the blend.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 26, 2009
    Inventor: Andrew Sun
  • Publication number: 20080229780
    Abstract: According to one embodiment of the invention, a cooling system for a heat-generating structure includes a heating device, a cooling loop, and a separation structure. The heating device heats a flow of fluid coolant including a mixture of water and antifreeze. The cooling loop includes a director structure which directs the flow of the fluid coolant substantially in the form of a liquid to the heating device. The heating device vaporizes a substantial portion of the water into vapor while leaving a substantial portion of the antifreeze as liquid. The separation structure receives, from the heating device, the flow of fluid coolant with the substantial portion of the water as vapor and the substantial portion of the antifreeze as liquid.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 25, 2008
    Applicant: Raytheon Company
    Inventors: William G. Wyatt, Richard M. Weber
  • Publication number: 20080209941
    Abstract: Disclosed are a method and device for a refrigerant-based thermal storage system wherein a condensing unit and an ice-tank heat exchanger can be isolated through a second heat exchanger. The disclosed embodiments provide a refrigerant-based ice storage system with increased reliability, lower cost components, and reduced power consumption compared to non-isolated systems.
    Type: Application
    Filed: April 10, 2008
    Publication date: September 4, 2008
    Applicant: ICE ENERGY, INC.
    Inventor: Ramachandran Narayanamurthy
  • Patent number: 7086240
    Abstract: An apparatus for optimizing an efficiency of a refrigeration system, comprising means for measuring a refrigeration efficiency of an operating refrigeration system: means for altering a process variable of the refrigeration system during efficiency measurement: and a processor for calculating a process variable level which achieves an optimum efficiency. The process variables may include refrigerant charge and refrigerant oil concentration in evaporator.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: August 8, 2006
    Assignee: Hudson Technologies Inc.
    Inventors: Kevin Zugibe, Douglas Schmidt
  • Patent number: 7059143
    Abstract: An apparatus for optimizing an efficiency of a refrigeration system, comprising means for measuring a refrigeration efficiency of an operating refrigeration system; means for altering a process variable of the refrigeration system during efficiency measurement; and a processor for calculating a process variable level which achieves an optimum efficiency. The process variables may include refrigerant charge and refrigerant oil concentration in evaporator.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: June 13, 2006
    Assignee: Hudson Technologies Inc.
    Inventors: Kevin Zugibe, Douglas Schmidt
  • Patent number: 7003980
    Abstract: An energy-saving type refrigerating device capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using, as a refrigerant, R32 with small global warming potential (GWP), comprising a compressor (23), a first heat exchanger (22), a expansion means (26), and a second heat exchanger (2), wherein R32 is used as a refrigerant, the diameter of a first communication pipe (42) is set to 2/8 in. and that of a second communication pipe (41) is set to ? in. in the refrigerating capacity range of 2.2 to 5.6 kW, the diameter of the first communication pipe (42) is set to 2/8 in. and that of the second communication pipe (41) is set to 4/8 in. in the refrigerating capacity range of 4.5 to 7.1 kW, and the diameter of the first communication pipe (42) is set to 2/8 in. and that of the second communication pipe (41) is set to ? in.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: February 28, 2006
    Assignee: Daikin Industries, Ltd.
    Inventor: Shigeharu Taira
  • Patent number: 6951115
    Abstract: The development of an alternate refrigerant composition which is free from a possibility of causing depletion of the ozone layer and capable of maintaining the performance of a conventional refrigerating circuit without modifying the circuit is desired. An object of the present invention is to provide such a refrigerant composition and a refrigerating circuit using the refrigerant composition. A refrigerant composition of the present invention comprises R245fa (CF3CH2CHF2), R125 (CHF2CF3), R508A (R23/R116:39/61) and R14 (tetrafluoromethane: CF4). Thus, the refrigerant composition has no possibility of causing depletion of the ozone layer. Further, since the composition is noncombustible, possible combustion can be prevented even if it leaks.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: October 4, 2005
    Assignees: Sanyo Electric Co., Ltd., Sanyo Electric Biomedical Co., Ltd.
    Inventor: Jiro Yuzawa
  • Patent number: 6880361
    Abstract: An energy-saving refrigerating device is capable of preventing global warming, allowing a communication pipe diameter to be reduced and the number of types of the communication pipe diameters to be reduced while a COP of over the COP obtained when R22 is used is provided by using R32 with small global warming potential (GWP). The refrigerating device includes a compressor, a first heat exchanger, an expansion device, and a second heat exchanger. The diameters of first and second communication pipes are set to {fraction (2/8)} in. and ? in., respectively, in the refrigerating capacity range of 2.2 to 5.6 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and {fraction (4/8)} in., respectively, in the refrigerating capacity range of 4.5 to 7.1 kW. The diameters of the first and second communication pipes are set to {fraction (2/8)} in. and ? in., respectively, in the refrigerating capacity range of 7.1 to 14.0 kW.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: April 19, 2005
    Assignee: Daikin Industries, Ltd.
    Inventor: Shigeharu Taira
  • Patent number: 6840058
    Abstract: To provide a refrigerating cycle apparatus which uses carbon dioxide as a working medium, in which a problem associated with reliability arisen from introduction of water into a refrigeration cycle has been solved. Carbonic acid produced by a reaction of carbon dioxide or a mixed refrigerant including carbon dioxide and water is efficiently removed by providing a flow channel of the refrigeration cycle with a carbonic acid trapping agent, and consequently, the refrigerating cycle apparatus with high reliability which can prevent deterioration of a carbon dioxide refrigerant, decomposition of a refrigeration oil, corrosion of metal components or the like is constructed.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: January 11, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masaaki Suzuki, Yuji Yoshida, Fumitoshi Nishiwaki, Masami Funakura, Noriho Okaza
  • Patent number: 6792773
    Abstract: A collector for the liquid phase of the working medium of an air conditioning system has first and second connecting pipes provided for connection into the circuit of an air conditioning system. One of the connecting pipes continues in a guide tube which is guided through the interior of the container of the collector. Part of the guide tube runs through the bottom region of the container, which is provided for vertical arrangement, and has at least one opening for recycling collected oil and the liquid phase of the working medium into the working medium circulating through the air conditioning system. In order to separate the liquid phase of the working medium of the air conditioning system, a cyclone-like separating device is provided. The separating device has a cyclone chamber and a central outflow connecting pipe forming an overflow. One of the connecting pipes leads tangentially into the cyclone chamber and the open end of the guide tube ends at a short distance before the outflow connecting pipe.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: September 21, 2004
    Assignees: DaimlerChrysler AG, Obrist Engineering GmbH
    Inventors: Peter Kuhn, Frank Obrist
  • Patent number: 6758987
    Abstract: An apparatus and method wherein ozone layer-damaging dichlorodifluoromethane is substituted with a mix of less environmentally damaging refrigerants chlorodifluoroethane and tetrafluoroethane in dichlorodifluoromethane-based air-cooling systems. While less environmentally damaging than dichlorodifluoromethane, the substitute refrigerant has a temperature-pressure relationship similar to that of dichlorodifluoromethane, making the substitute refrigerant suitable for use with dichlorodifluoromethane-based air-cooling systems. The substitute refrigerant can be used alone or in combination with dichlorodifluoromethane. In either event, it is mixed with a relatively small percentage of a hydrophobic lubricating oil which is compatible with both the substitute refrigerant and with dichlorodifluoromethane.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: July 6, 2004
    Inventor: Harrison M. Weber, III
  • Patent number: 6701744
    Abstract: Formed in a valve main body (1) is a refrigerant flow path (41) for lowering the amount of flow of a refrigerant which flows into an internal space (30) of a casing (3) from a refrigerant flow path (9) through a needle fit/insert clearance (17) defined between a needle fit/insert aperture (16) and a needle (2) inserted into the needle fit/insert aperture (16). When, with the rise or drop in refrigerant pressure, refrigerant flows through the needle fit/insert clearance (17), adhesion of sludge included in the refrigerant to the wall surface of the needle fit/insert clearance (17) is reduced by a lessened amount of refrigerant flow in the needle fit/insert clearance (17) by the refrigerant flow path (41). This therefore prevents, as far as possible, malfunction of the needle (2) due to sludge adhesion, thereby ensuring proper operation of the needle (2).
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: March 9, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Ryuzaburo Yajima, Nobuo Domyo, Hajime Esumi, Shigeharu Taira
  • Patent number: 6698214
    Abstract: This invention relates to a refrigeration method and processes that employ a nontoxic and environmentally benign, oil-free refrigerant in a novel vapor-compression thermodynamic cycle that includes a means for enhancing cooling capacity and efficiency. A means of controlling of the process conditions and flow of the refrigerant are provided. The refrigerant in the invention in used in a transcritical cycle.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: March 2, 2004
    Assignee: Thar Technologies, INC
    Inventor: Lalit Chordia