Transferring Heat Between Diverse Function Portions Of Refrigeration Cycle Patents (Class 62/113)
-
Publication number: 20140298824Abstract: An aircraft cooling system including a cooler having a cold transfer circuit, in which a cold transfer medium circulates. The cooler supplies cooling energy to an aircraft device to be cooled. The aircraft cooling system further includes a heat transfer arrangement having a heat transfer circuit, in which a heat transfer medium circulates and which is thermally coupled to the cold transfer circuit of the cooler via a heat exchanger, in order to absorb waste heat generated by the cooler and transfer it to a cabin air extraction system. The heat transfer arrangement further includes at least one heat pump which brings about an increase of the heat energy transfer from the cold transfer medium circulating in the cold transfer circuit of the cooler to the heat transfer medium circulating in the heat transfer circuit, at least in certain operating phases of the aircraft cooling system.Type: ApplicationFiled: April 2, 2014Publication date: October 9, 2014Applicant: Airbus Operations GmbHInventors: Torsten Truemper, Matthias Reiss
-
Publication number: 20140260248Abstract: A cooling system and process in an OTEC system are described where the sub-cooled working liquid from the working fluid pump outlet is used to cool the working fluid pump motor, either directly or indirectly via heat exchange with a secondary fluid. The heat from the motor that is being rejected into the working fluid just prior to the working fluid flowing to the evaporator helps to alleviate heat duty in the evaporator meaning more potential for the evaporator to create energy. Also, because two-phase evaporators, such as those in an OTEC system, are less efficient than single-phase heat exchangers at single-phase heating, this pre-heating of the working fluid will help the evaporator performance substantially.Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: LOCHEED MARTIN CORPORATIONInventors: Eugene C. JANSEN, Benjamin S. BALBIR
-
Patent number: 8833096Abstract: A heat exchange assembly and apparatus and method employing the heat exchange assembly are provided. The heat exchange assembly includes a coolant-to-refrigerant heat exchanger and a heater. The heat exchanger includes a coolant inlet and a coolant outlet for passing a coolant through the heat exchanger, and a refrigerant inlet and a refrigerant outlet for separately passing a refrigerant through the heat exchanger. The heat exchanger cools coolant passing through the heat exchanger by dissipating heat from coolant passing through the heat exchanger to refrigerant passing through the heat exchanger. The heater is integrated with the heat exchanger and applies an auxiliary heat load to refrigerant passing through the heat exchanger to facilitate ensuring that refrigerant passing through the heat exchanger absorbs at least a specified minimum heat load, for example, to ensure that refrigerant egressing from the refrigerant outlet of the heat exchanger is superheated vapor refrigerant.Type: GrantFiled: November 4, 2010Date of Patent: September 16, 2014Assignee: International Business Machines CorporationInventors: Levi A. Campbell, Richard C. Chu, Michael J. Ellsworth, Jr., Madhusudan K. Iyengar, Robert E. Simons
-
Patent number: 8720216Abstract: The hybrid aqua-ammonia and lithium bromide-water absorption chiller is an aqua-ammonia absorption refrigeration system integrated with a lithium bromide-water absorption refrigeration system. By integrating a solar-powered lithium bromide-water absorption refrigeration system into the aqua-ammonia absorption refrigeration system, evaporator temperatures below the freezing point of water may be generated at lower operating pressures and lower generator temperatures than in conventional aqua-ammonia absorption refrigeration systems.Type: GrantFiled: October 1, 2013Date of Patent: May 13, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Syed A. M. Said, Maged A. I. El-Shaarawi, Muhammad Umar Siddiqui
-
Patent number: 8713950Abstract: In a method of the application, cooling energy is produced by a refrigerating device. The cooling energy produced by the refrigerating device is supplied to at least one cooling station by a cooling circuit, circulating in which is a refrigerant, which upon release of its cooling energy to the at least one cooling station is converted from the liquid to the gaseous state and is then converted back to the liquid state by corresponding pressure- and temperature control in the cooling circuit. Upon transfer of the cooling system to its state of rest, a control value disposed in the cooling circuit is controlled in such a way that a desired operating pressure (??) arises in the cooling circuit downstream of the control valve. Refrigerant cooled by the refrigerating device is received in a reservoir disposed upstream of the control valve in the cooling circuit.Type: GrantFiled: March 5, 2010Date of Patent: May 6, 2014Assignee: Airbus Operations GmbHInventor: Sebastian Roering
-
Publication number: 20130312441Abstract: A heat exchanger assembly includes a plurality of tubes, each having an inlet end and an outlet end. An inlet header is configured to receive a cooling fluid and to distribute the cooling fluid to the inlet ends of the plurality of tubes. An outlet header includes an outer shell and defines an outlet chamber. The outlet chamber is configured to receive cooling fluid discharged from the outlet ends of the plurality of tube. A supply conduit supplies the cooling fluid to the inlet header. The supply conduit includes a conduit portion extending through the outlet header.Type: ApplicationFiled: May 25, 2012Publication date: November 28, 2013Applicant: Hussmann CorporationInventor: Steve L. Fritz
-
Patent number: 8590327Abstract: A refrigerating apparatus for keeping an inside of a storage at a predetermined low-temperature state includes first and second refrigerant circuits including compressors, condensers, decompressors, and evaporators, connected circularly with pipings to form refrigerating cycles, the circuit having a first or second refrigerant sealed therein as a working refrigerant, a first sensor which detects a temperature of a cascade condenser constituted by integrating the evaporator of the first refrigerant circuit and the condenser of the second refrigerant circuit in a heat exchangeable manner, first and second controllers which control operation performances of the first and second compressors in a variable manner based on first and second sensor detected temperatures in order that the first and second sensor detected temperatures are first and second temperatures, respectively, and a second sensor which detects a temperature inside the storage.Type: GrantFiled: June 29, 2010Date of Patent: November 26, 2013Assignee: Panasonic Healthcare Co., Ltd.Inventors: Ryuzo Tobe, Tetsuo Sakurai, Ryuichi Tsuruma
-
Patent number: 8584484Abstract: An aircraft cooling system evaporator arrangement has at least two mutually independent coolant circuits, at least two evaporation devices arranged to be hydraulically parallel for enabling an exchange of heat between the coolant and a refrigerant, at least two supply lines for supplying refrigerant to the evaporation devices, and at least two discharge lines for discharging refrigerant from the evaporation devices. A different one of the evaporation devices, a different one of the supply lines and a different one of the discharge lines are assigned to each of the coolant circuits, and the supply lines are hydraulically separate from each other as are the discharge lines. At least one refrigerant sensor monitors a refrigerant state of each of the discharge lines and an expansion valve is driven in accordance with the refrigerant sensors to control streams of refrigerant through the supply lines.Type: GrantFiled: September 1, 2008Date of Patent: November 19, 2013Assignee: Airbus Operations GmbHInventors: Wolfgang Ebigt, Wilson Willy Casas Noriega
-
Patent number: 8584485Abstract: An aircraft cooling system evaporator arrangement has an evaporation device including four evaporators that are hydraulically separate from each other with respect to coolant flow. Refrigerant flows from a feed line into first and second evaporators, from the first evaporator into and through a third evaporator, and from the second evaporator into and through a fourth evaporator. The first and third evaporators define a first pair of evaporators arranged parallel to a second pair of evaporators defined by the second and fourth evaporators. First and second coolant supply lines of a first coolant circuit supply coolant to one of the evaporators in each of the first and second pair of evaporators respectively, and first and second coolant supply lines of a second, independent coolant circuit supply coolant to the other of the evaporators in each of the first and second pair of evaporators respectively.Type: GrantFiled: September 1, 2008Date of Patent: November 19, 2013Assignee: Airbus Operations GmbHInventors: Wolfgang Ebigt, Wilson Willy Casas Noriega
-
Patent number: 8555642Abstract: A method of utilizing waste heat to create a pressurized working fluid is disclosed. The method includes providing a vessel containing a sorbent system, introducing a feed of waste heat to a heat exchanger external to the vessel to heat a feed of working fluid, introducing the heated working fluid from the heat exchanger to the vessel to obtain pressurized working fluid, and directing the pressurized working fluid from the vessel to a work component. The method is particularly suited to make use of waste heat an industrial process, (e.g., a chemical processing or petrochemical refining operation) in which low grade heat source(s) are used to drive the sorption system.Type: GrantFiled: February 24, 2011Date of Patent: October 15, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Bhupender S. Minhas, Sufang Zhao, Mohsen S. Yeganeh, Tahmid I. Mizan
-
Patent number: 8549868Abstract: A refrigeration cycle apparatus (50) includes: a main refrigerant circuit (21) having a compressor (1), a radiator (2), a first expansion mechanism (5), a second expansion mechanism (6), and an evaporator (4); an injection passage (22) for supplying an intermediate-pressure refrigerant to an injection port 1c of the compressor 1; and a water circuit (30) through which water to be heated in the radiator (2) flows. The refrigeration cycle apparatus (50) includes a sub heat exchanger (3) for cooling the water in the water circuit (30) by exchanging heat between the refrigerant in the injection passage (22) and the water to be heated in the radiator (2).Type: GrantFiled: June 20, 2008Date of Patent: October 8, 2013Assignee: Panasonic CorporationInventors: Kou Komori, Yuichi Yakumaru, Tomoichiro Tamura, Masaya Honma, Hiroki Hayashi
-
Patent number: 8528359Abstract: A refrigerant vapor compression system includes a compression device, a heat rejecting heat exchanger, an economizer heat exchanger, an expander and an evaporator disposed in a refrigerant circuit. An evaporator bypass line is provided for passing a portion of the refrigerant flow from the main refrigerant circuit after having traversed a first pass of the economizer heat exchanger through the expander to partially expand it to an intermediate pressure and thence through a second pass of the economizer heat exchanger and into an intermediate pressure stage of the compression device. An economizer bypass line is also provided for passing a portion of the refrigerant from the main refrigerant circuit after having traversed the heat rejecting heat exchanger through a restrictor type expansion device and thence into the evaporator bypass line as liquid refrigerant or a mix of liquid and vapor refrigerant for injection into an intermediate pressure stage of the compression device.Type: GrantFiled: October 27, 2006Date of Patent: September 10, 2013Assignee: Carrier CorporationInventors: Alexander Lifson, Michael F. Taras
-
Patent number: 8528348Abstract: An aircraft cooling system for cooling heat loads on board an aircraft includes a cold producing device, a first cold carrier fluid circuit thermally coupled to the cold producing device and connected to a first heat load in order to carry off heat from the first heat load, a second cold carrier fluid circuit connected to a second heat load in order to carry off heat from the second heat load, a heat exchanger disposed in the second cold carrier fluid circuit and configured to thermally couple the second cold carrier fluid circuit to an ambient temperature surrounding the aircraft, and a coupling system configured to selectively thermally couple the first cold carrier fluid circuit to the second cold carrier fluid circuit or thermally uncouple it from the second cold carrier fluid circuit.Type: GrantFiled: August 17, 2007Date of Patent: September 10, 2013Assignee: Airbus Deutschland GmbHInventors: Wolfgang Ebigt, Wilson Willy Casas Noriega, Andreas Frey, Dirk Kastell
-
Patent number: 8522564Abstract: A temperature control system includes a compressor, a condenser, an evaporator, a receiver, and an accumulator. A valve is positioned between the evaporator and the receiver. An evacuation line has a first end in fluid communication with heat transfer fluid between the valve and the receiver, and a second end in fluid communication with the accumulator. The evacuation line provides for flow of the heat transfer fluid from both of the first heat exchanger and the receiver to the accumulator during an evacuation mode of operation of the temperature control system. The valve can take the form of a check valve or an expansion valve without a bleed port.Type: GrantFiled: June 7, 2011Date of Patent: September 3, 2013Assignee: Thermo King CorporationInventors: Srinivasa Rao Koppineedi, Vladimir Sulc, William L. Waldschmidt, Joe A. Wermager
-
Patent number: 8516838Abstract: An improved refrigeration system may include a first refrigeration loop or one to multiple units of split chillers providing cooling for HVAC, dehumidification, medium temperature load cases and further condensing the refrigerant utilizing a heat exchanger for the cascadable low temperature units. The system may be scalable and the distributive design utilizes chillers to replace the traditional rack system. The first refrigeration loop may incorporate an integral or remote pump(s) which provides coolant through conduits to the medium temperature cases, HVAC and low temperature heat exchangers. The system may further include a combined direct expansion condenser and free cooler system incorporating a partial, pre-chiller through the combination direct expansion, water, fluid (secondary) coolant condenser. This may allow for the water or fluids systems to be cooled by the ambient temperature and fans reducing the compressor run time or even allowing the compressors to turn off.Type: GrantFiled: February 18, 2011Date of Patent: August 27, 2013Inventor: Anthony Papagna
-
Patent number: 8468830Abstract: A heating and cooling system for inlet air of a turbine compressor. The heating and cooling system may include a fluid coil positioned about the turbine compressor and a thermal energy storage tank. The fluid coil and the thermal energy storage tank are in fluid communication such that fluid is both provided to the fluid coil from the thermal energy storage tank for exchanging heat with the inlet air and returned to the thermal energy storage tank without further heat exchange.Type: GrantFiled: December 11, 2008Date of Patent: June 25, 2013Assignee: General Electric CompanyInventors: Abbas Motakef, Peter Feher
-
Patent number: 8459049Abstract: Method and apparatus for refrigerant flow control are disclosed. One exemplary method relates to a method of controlling a flow of a refrigerant in an appliance comprising a refrigerant flow controller and a refrigerant flow valve, wherein the refrigerant flow controller is configured to direct the refrigerant flow valve to one of a substantially fully opened position and a substantially fully closed position. The method comprises directing the refrigerant flow valve, via the refrigerant flow controller, to at least one transition position between the substantially fully opened position and the substantially fully closed position, and operating the appliance with the refrigerant flow valve at the at least one transition position.Type: GrantFiled: August 30, 2010Date of Patent: June 11, 2013Assignee: General Electric CompanyInventor: Jianwu Li
-
Patent number: 8365551Abstract: A vacuum insulator for portions of the refrigeration cycle of a refrigerator appliance is provided. The vacuum insulator can be applied to the suction line leading to the refrigerant compressor, the capillary tube leading to the evaporator inlet, and/or the capillary tube—suction line heat exchanger. An outer insulating layer is used to create a vacuum that serves to insulate the intended portion of the refrigeration cycle.Type: GrantFiled: December 9, 2010Date of Patent: February 5, 2013Assignee: General Electric CompanyInventors: Kenneth Joseph Hanley, Martin Christopher Severance, Karthick Srinivasan, John Alexander Gardner
-
Publication number: 20120312036Abstract: A temperature control system includes a compressor, a condenser, an evaporator, a receiver, and an accumulator. A valve is positioned between the evaporator and the receiver. An evacuation line has a first end in fluid communication with heat transfer fluid between the valve and the receiver, and a second end in fluid communication with the accumulator. The evacuation line provides for flow of the heat transfer fluid from both of the first heat exchanger and the receiver to the accumulator during an evacuation mode of operation of the temperature control system. The valve can take the form of a check valve or an expansion valve without a bleed port.Type: ApplicationFiled: June 7, 2011Publication date: December 13, 2012Applicant: THERMO KING CORPORATIONInventors: Srinivasa Rao Koppineedi, Vladimir Sulc, William L. Waldschmidt, Joe A. Wermager
-
Patent number: 8316657Abstract: A refrigerant system is configured to alternatingly run in an economized mode and a standard mode. A control system shifts the refrigerant system between the economized mode and standard mode responsive to a determined efficiency reflecting a combination of at least two of: compressor isentropic efficiency; condenser efficiency; evaporator efficiency; efficiency of hardware mechanically powering the compressor; and a mode-associated cycling efficiency. In a bypass mode, a bypass refrigerant flow from an intermediate port may return to the suction port. Shifting into the bypass mode may be similarly controlled based upon the determined efficiency.Type: GrantFiled: February 28, 2007Date of Patent: November 27, 2012Assignee: Carrier CorporationInventor: Alexander Lifson
-
Publication number: 20120291468Abstract: It is intended to realize an air conditioning system of high operational efficiency without reducing the user's comfort. In an air conditioning system 1, a set temperature determining device 31 determines a target temperature of water to be supplied to an indoor heat exchanger 12, based on [“target outflow temperature”=“current outflow temperature”+((“inlet and outlet temperature difference”/“indoor and outdoor temperature difference”)דset temperature difference”)]. The indoor and outdoor temperature difference is a difference between an indoor temperature and an outdoor temperature, the inlet and outlet temperature difference is a difference between temperatures of water at the inlet side and the outlet side of an intermediate heat exchanger 9, and the set temperature difference is a difference between an indoor temperature and a set temperature. A control device 32 controls an outdoor unit 2 in response to the target temperature determined by the set temperature determining device 31.Type: ApplicationFiled: February 24, 2010Publication date: November 22, 2012Applicant: Mitsubishi Electric CorporationInventors: Yohei Kato, Takashi Okazaki, So Momoto, Koji Matsuzawa
-
Patent number: 8261565Abstract: A cooling system for transferring heat from a heat load to an environment has a volatile working fluid. The cooling system includes first and second cooling cycles that are thermally connected to the first cooling cycle. The first cooling cycle is not a vapor compression cycle and includes a pump, an air-to-fluid heat exchanger, and a fluid-to-fluid heat exchanger. The second cooling cycle can include a chilled water system for transferring heat from the fluid-to-fluid heat exchanger to the environment. Alternatively, the second cooling cycle can include a vapor compression system for transferring heat from the fluid-to-fluid heat exchanger to the environment.Type: GrantFiled: December 2, 2004Date of Patent: September 11, 2012Assignee: Liebert CorporationInventors: Steven A Borror, Franklin E DiPaolo, Thomas E Harvey, Steven M Madara, Reasey J Mam, Stephen C Sillato
-
Publication number: 20120125023Abstract: A refrigeration system includes a chiller with an integrated free cooling system and refrigeration system. In certain embodiments, the chiller may be a single package unit with all equipment housed within the same support frame. The chiller may generally include three modes of operation: a first mode that employs free cooling, a second mode that employs free cooling and implements a refrigeration cycle, and a third mode that uses the free cooling system provide additional cooling capacity for the refrigeration system. The free cooling system includes an independent loop configured to transfer heat from a cooling fluid circulating within the free cooling system to the ambient air.Type: ApplicationFiled: August 12, 2010Publication date: May 24, 2012Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANYInventors: William L. Kopko, Mustafa K. Yanik
-
Publication number: 20120125022Abstract: A cooling system for a heat source includes a heat source loop, a refrigerant loop, and a controller. The heat source loop provides a closed fluid path for a process fluid and fluidly connects a valve, a bypass leg and/or a heat exchange leg having a heat exchanger, and a pump. The process fluid is disposed within a portion of the loop and is subject to heat transfer from the heat source. The valve is disposed downstream of the heat source portion of the loop, wherein the valve is selectively operable to direct process fluid to the bypass leg and/or the heat exchanger leg. The refrigerant loop provides a closed fluid path for a fluid refrigerant and fluidly connects the heat exchanger, a refrigerant compressor, a refrigerant condenser, and a refrigerant regulator. The controller is in communication with the valve and is adapted to control the valve to regulate an amount of process fluid entering the bypass leg and the heat exchanger leg.Type: ApplicationFiled: July 30, 2010Publication date: May 24, 2012Applicant: CARRIER CORPORATIONInventors: Daniel M. Maybury, Alan S. Drucker, XuQiang Liao, Belin G. Czechowicz, Gavin R. Blight, Andreas Hille, Timothy R. Campbell
-
Patent number: 8181470Abstract: Disclosed is a method and device for a refrigerant-based thermal energy storage and cooling system with multiple condensing units utilizing a common evaporator coil. The disclosed embodiments provide a refrigerant-based ice storage system with increased reliability, lower cost components, and reduced power consumption and ease of installation.Type: GrantFiled: February 13, 2009Date of Patent: May 22, 2012Assignee: Ice Energy, Inc.Inventors: Ramachandran Narayanamurthy, Brian Parsonnet, Donald Thomas Cook
-
Publication number: 20120111035Abstract: Apparatus and method are provided for cooling an electronic component. The apparatus includes a coolant-cooled structure in thermal communication with the component(s) to be cooled, and a coolant-to-refrigerant heat exchanger coupled in fluid communication with the coolant-cooled structure via a coolant loop to receive coolant from and supply coolant to the coolant-cooled structure. The apparatus further includes a refrigerant loop coupled in fluid communication with the coolant-to-refrigerant heat exchanger, and the heat exchanger cools coolant passing therethrough by dissipating heat from the coolant in the coolant loop to refrigerant in the refrigerant loop. A controllable coolant heater is associated with the coolant loop for providing an adjustable heat load on the coolant in the coolant loop to ensure at least a minimum heat load is dissipated from the coolant to the refrigerant passing through the heat exchanger.Type: ApplicationFiled: November 4, 2010Publication date: May 10, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, JR., Madhusudan K. IYENGAR, Robert E. SIMONS
-
Publication number: 20120111034Abstract: A heat exchange assembly and apparatus and method employing the heat exchange assembly are provided. The heat exchange assembly includes a coolant-to-refrigerant heat exchanger and a heater. The heat exchanger includes a coolant inlet and a coolant outlet for passing a coolant through the heat exchanger, and a refrigerant inlet and a refrigerant outlet for separately passing a refrigerant through the heat exchanger. The heat exchanger cools coolant passing through the heat exchanger by dissipating heat from coolant passing through the heat exchanger to refrigerant passing through the heat exchanger. The heater is integrated with the heat exchanger and applies an auxiliary heat load to refrigerant passing through the heat exchanger to facilitate ensuring that refrigerant passing through the heat exchanger absorbs at least a specified minimum heat load, for example, to ensure that refrigerant egressing from the refrigerant outlet of the heat exchanger is superheated vapor refrigerant.Type: ApplicationFiled: November 4, 2010Publication date: May 10, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Levi A. CAMPBELL, Richard C. CHU, Michael J. ELLSWORTH, JR., Madhusudan K. IYENGAR, Robert E. SIMONS
-
Patent number: 8173897Abstract: A superconducting cable line includes a heat insulation pipe for a fluid for transporting liquid hydrogen, a superconducting cable housed in the heat insulation pipe for a fluid, and heat exchange means for performing a heat exchange between liquid hydrogen and a refrigerant of the cable. The superconducting cable includes a cable core inside a heat insulation pipe for a cable and is housed in the heat insulation pipe for a fluid to form a low temperature environment around the cable and a double heat insulation structure including the heat insulation pipe. Therefore, since heat intrusion into the superconducting cable is reduced and the refrigerant is cooled with liquid hydrogen, the line can reduce energy for cooling the refrigerant.Type: GrantFiled: July 12, 2005Date of Patent: May 8, 2012Assignee: Sumitomo Electric Industries, Ltd.Inventors: Masayuki Hirose, Yuichi Yamada
-
Publication number: 20120102989Abstract: A refrigeration system may be provided with a space-saving suction-line heat exchanger. The heat exchanger may be incorporated into a receiver. As heated liquid refrigerant enters and flows through the receiver, it may transfer heat into the heat exchanger. The heat exchanger may be connected to a suction line of the system so that refrigerant vapor and an oil-refrigerant mixture may be heated as it passes from an evaporator and into an inlet of a compressor.Type: ApplicationFiled: October 27, 2010Publication date: May 3, 2012Applicant: HONEYWELL INTERNATIONAL INC.Inventors: RICKY GOV, RANJIT DARKE, PETER ZHENG
-
Publication number: 20120096879Abstract: An aircraft fuel tank ventilation system, comprising a refrigerative dehumidifying device having a refrigerating element in contact with air flowing between a vent open to the atmosphere and a fuel tank. Also, a method of dehumidifying air introduced into an aircraft fuel tank via the ventilation system, the method comprising directing atmospheric air from the vent into contact with the refrigerating element, and cooling the refrigerating element so as to remove water vapour from the air flowing from the vent towards the fuel tank by condensation. An aircraft fuel tank ventilation system, comprising a refrigerative dehumidifying device having a refrigerating element in contact with air flowing between a vent open to the atmosphere and a fuel tank.Type: ApplicationFiled: July 12, 2010Publication date: April 26, 2012Applicant: AIRBUS OPERATIONS LIMITEDInventors: Joseph K-W Lam, Franklin Tichborne, Simon Masters, David Parmenter
-
Patent number: 8146375Abstract: A hydrocooler system for cooling produce. The hydrocooler system comprises a hydrocooler tank configured to contain a fluid used to saturate and cool the produce, and a thermal storage device positioned in the hydrocooler tank and configured to receive a refrigerant. The thermal storage device is configured to generate a thermal storage medium from the fluid on the thermal storage device in response to the flow of refrigerant through the thermal storage device.Type: GrantFiled: March 10, 2009Date of Patent: April 3, 2012Assignee: Thermo King CorporationInventors: William F. Mohs, B. Wayne Benson, Vidhey V. Trivedi
-
Patent number: 8141381Abstract: The vapor compression refrigerating apparatus of the invention comprises a compressor 2, a condenser 4, a regeneration heat exchanger 6, an expansion means 8, and an evaporator 10 connected in series. The vapor compression refrigerating cycle is based on a cycle corresponding to a reversed Ericsson cycle in which isothermal heat dissipation process and isothermal heat absorption process occur overstriding a saturated vapor line and saturated liquid line respectively and heat exchange is carried out between isobaric heat dissipation process in a liquid zone and isobaric heat absorption process in a superheated vapor zone.Type: GrantFiled: October 20, 2006Date of Patent: March 27, 2012Assignee: Mayekawa Mfg. Co., Ltd.Inventors: Nobumi Ino, Takayuki Kishi
-
Publication number: 20120047924Abstract: Method and apparatus for refrigerant flow control are disclosed. One exemplary method relates to a method of controlling a flow of a refrigerant in an appliance comprising a refrigerant flow controller and a refrigerant flow valve, wherein the refrigerant flow controller is configured to direct the refrigerant flow valve to one of a substantially fully opened position and a substantially fully closed position. The method comprises directing the refrigerant flow valve, via the refrigerant flow controller, to at least one transition position between the substantially fully opened position and the substantially fully closed position, and operating the appliance with the refrigerant flow valve at the at least one transition position.Type: ApplicationFiled: August 30, 2010Publication date: March 1, 2012Inventor: Jianwu Li
-
Patent number: 8117855Abstract: Modernized refrigeration cycle includes two consecutive expansions with two expansion devices and two condensers, wherein the first condenser liquefies refrigerant after compressor and the second condenser liquefies refrigerant after the first expansion device. The cooling medium for the second condenser is either air to be conditioned in the refrigeration system or another available medium. Invention presents sealed systems of air conditioners, dehumidifiers and heat pumps operating per aforementioned refrigeration cycle that allows enhanced dehumidification with efficiency improvement in cooling mode and heating capacity and efficiency increase in heating mode.Type: GrantFiled: February 19, 2010Date of Patent: February 21, 2012Inventor: Alexander P Rafalovich
-
Publication number: 20110308261Abstract: The invention relates to the use of a pressure-reducing element or splitting volume flows in a sorption machine, wherein a single volume flow from a recooling device is split into at least two volume flows. A first volume flow flows through at least one tube of a first tube section into a condenser and a second volume flow through at least one tube of a second tube section into an absorber, at least one of the two tube sections leading away from the recooling device or at least one of the two tube sections leading back to the recooling device comprising at least one pressure-reducing element.Type: ApplicationFiled: December 21, 2009Publication date: December 22, 2011Applicant: INVENSOR GMBHInventors: Niels Braunschweig, Soeren Paulussen
-
Patent number: 8079229Abstract: An economized refrigerant vapor compression system (10) for water heating includes a refrigerant compression device (20), a refrigerant-to-water heat exchanger (30), an economizer heat exchanger (60), an evaporator (40) and a refrigerant circuit (70) providing a first flow path (OA, 70B, 70C, 70D) connecting the compression device (20), the refrigerant-to-liquid heat exchanger (30), the economizer heat exchanger (60) and the evaporator (40) in refrigerant circulation flow communication and a second flow path (70E) connecting the first flow path (62) through the economizer heat exchanger (60) to the compression device (20). The economizer heat exchanger (60) has a first pass (62) for receiving a first portion of the refrigerant having traversed the refrigerant-to-liquid heat exchanger and a second pass (64) for receiving a second portion of the refrigerant having traversed the refrigerant-to-liquid heat exchanger.Type: GrantFiled: October 18, 2005Date of Patent: December 20, 2011Assignee: Carrier CorporationInventors: Alexander Lifson, Michael F. Taras
-
Publication number: 20110265502Abstract: As discussed herein, a first aspect of the present invention provides a high-efficiency heat pump that includes a frame, as well as a first circuit, a first compressor, a condenser heat exchanger, a first electronic expansion valve, an evaporator heat exchanger, and a controller. The first circuit, the first compressor, the condenser heat exchanger, the first electronic expansion valve, and the evaporator heat exchanger can be supported by the frame. The first compressor, the condenser heat exchanger, the first electronic expansion valve, and the evaporator heat exchanger can be connected to the first circuit. The controller can be in electronic communication with the first electronic expansion valve, and the controller can be configured to control operation of the first electronic expansion valve and/or the second electronic expansion valve.Type: ApplicationFiled: July 8, 2011Publication date: November 3, 2011Applicant: TRAK INTERNATIONAL, LLCInventor: Jeffrey H. Maxwell
-
Publication number: 20110265501Abstract: A system of energy recovery from low temperature sources of heat, comprising components of Organic Renkine Cycle (ORC) including a turbine from which an ORC vapor is withdrawn, a condenser in which the ORC vapor withdrawn from the turbine condenses into an ORC condensate, a pump which circulates the ORC working medium, a heat exchanger which is supplied with a heat carrier from a lower temperature heat source and in which the ORC working liquid, and an ARC Condenser in which the ORC working liquid is heated or evaporates to produce ORC working vapor which is supplied to the turbine; components of an absorption refrigeration cycle (ARC) including an absorption refrigeration machine which receives heat and vaporizes a liquid refrigerant of the ARC to produce an ARC refrigerant vapor which is supplied to the ARC condenser to heat the ORC working liquid; and an additional component increasing a temperature difference between the ORC condensate and the heat carrier from the low temperature heat source.Type: ApplicationFiled: April 29, 2010Publication date: November 3, 2011Inventor: Ari Nir
-
Patent number: 8020389Abstract: Climatic test chamber (10) for carrying out a sequence of specified test cycles and cooled by means of at least a refrigerating circuit (100, 200, 410) including a variable-speed compressor (120, 210, 410). During the steps of the test cycles in which said chamber (10) is held at a minimum set temperature, the compressor (120, 210, 410) operates at the minimum rotating speed thereof and the refrigeration capacity is used to cool a cold storage medium. The cold stored by the cold storage medium is then recovered to subcool the refrigerant medium during the cooling-down steps in which the compressor (120, 210, 410) operates at the maximum rotating speed thereof.Type: GrantFiled: December 20, 2004Date of Patent: September 20, 2011Assignee: Angelantoni Industrie SpAInventor: Maurizio Ascani
-
Publication number: 20110219770Abstract: A method of utilizing waste heat to create a pressurized working fluid is disclosed. The method includes providing a vessel containing a sorbent system, introducing a feed of waste heat to a heat exchanger external to the vessel to heat a feed of working fluid, introducing the heated working fluid from the heat exchanger to the vessel to obtain pressurized working fluid, and directing the pressurized working fluid from the vessel to a work component. The method is particularly suited to make use of waste heat an industrial process, (e.g., a chemical processing or petrochemical refining operation) in which low grade heat source(s) are used to drive the sorption system.Type: ApplicationFiled: February 24, 2011Publication date: September 15, 2011Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Bhupender S. MINHAS, Sufang ZHAO, Mohsen S. YEGANEH, Tahmid I. MIZAN
-
Publication number: 20110203300Abstract: Modernized refrigeration cycle includes two consecutive expansions with two expansion devices and two condensers, wherein the first condenser liquefies refrigerant after compressor and the second condenser liquefies refrigerant after the first expansion device. The cooling medium for the second condenser is either air to be conditioned in the refrigeration system or another available medium. Invention presents sealed systems of air conditioners, dehumidifiers and heat pumps operating per aforementioned refrigeration cycle that allows enhanced dehumidification with efficiency improvement in cooling mode and heating capacity and efficiency increase in heating mode.Type: ApplicationFiled: February 19, 2010Publication date: August 25, 2011Inventor: Alexander P. Rafalovich
-
Patent number: 7997091Abstract: A refrigerant cycle is provided with an economizer circuit. The amount of refrigerant passing through the economizer circuit can be gradually modulated by an expansion device whose position can be easily adjusted from fully open to fully closed or disengaged. In the past, economizer circuits have either been fully engaged or fully disengaged. Modulation of economizer flow allows for variable capacity operation. This improves unit operating efficiency, minimizes unit cycling and prevents compressor overloading at extreme of operating conditions. It also allows for head pressure and discharge temperature control.Type: GrantFiled: April 22, 2004Date of Patent: August 16, 2011Assignee: Carrier CorporationInventors: Alexander Lifson, Michael F. Taras, Thomas J. Dobmeier
-
Publication number: 20110146308Abstract: Techniques are generally described for devices for cooling using electrocaloric material as refrigerant and methods for cooling using electrocaloric material. An example cooling system may comprise a refrigerant unit having an electrocaloric membrane disposed between a heat sink and a cooling load. The electrocaloric membrane may alternate between thermal contact with the heat sink and cooling load. The electrocaloric membrane may also be subjected to alternating electric fields for polarizing and depolarizing the electrocaloric membrane in a manner that promotes heat transfer from the cooling load to the heat sink.Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Inventor: Vincenzo Casasanta
-
Publication number: 20110138824Abstract: The invention relates to a method for carrying out a heat transfer between alternately working adsorbers (Ad1, Ad2) in an adsorption refrigeration installation comprising an external cooling circuit (Kw) and an external heating circuit (Hw). The method is characterized by a closed heat transfer circuit, connected between the first and the second adsorber, comprising a heat transfer medium (Wm) circulating therein, a heat transfer with the external cooling circuit (Kw) being carried out in the heat transfer circuit via a first heat contact and a heat transfer with the external heating circuit (Hw) being carried out via a second heat contact.Type: ApplicationFiled: June 16, 2009Publication date: June 16, 2011Applicant: SORTECH AGInventor: Walter Mittelbach
-
Publication number: 20110120158Abstract: A refrigerating system including an air conditioning system and a cooler system is provided. An air conditioner-side refrigerant passage may be connected to a cooler-side refrigerant passage to allow refrigerant to flow between the air conditioning system and the cooler system. Thus, if a cooler-side compressor experiences abnormal operation, cooler-side refrigerant may be compressed by an air conditioner-side compressor so as to maintain cooling performance of the refrigerating system.Type: ApplicationFiled: March 19, 2010Publication date: May 26, 2011Inventors: Jae Heuk CHOI, Yoon Ho Yoo, Do Yong Ha, Baik Young Chung
-
Publication number: 20110088419Abstract: A supersonic cooling system operates by pumping liquid. Because the supersonic cooling system pumps liquid, the compression system does not require the use of a condenser. The compression system utilizes a compression wave. An evaporator of the compression system operates in the critical flow regime where the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to the ambient pressure.Type: ApplicationFiled: December 6, 2010Publication date: April 21, 2011Inventors: Jayden Harman, Thomas Gielda
-
Publication number: 20110079031Abstract: A cooling system for a vehicle comprises a compressor for compressing refrigerant, the compressor being adapted to be driven by a power source installed in the vehicle, a condenser for receiving compressed refrigerant from the compressor, an expansion device for expanding refrigerant from the condenser, and a liquid-to-liquid heat exchanger for receiving refrigerant from the expansion device and exchanging heat between the refrigerant and a liquid. The liquid may comprise a coolant, and a pump may be provided for pumping the coolant through the heat exchanger to a point of use such as a cooling garment to cool personnel on board the vehicle. Alternatively, the liquid may be a drinkable liquid which is pumped through the heat exchanger to a suitable dispensing system to provide an on-board supply of cool drinking liquid.Type: ApplicationFiled: December 13, 2010Publication date: April 7, 2011Applicant: Allen-Vanguard Technologies Inc.Inventors: Daniel Reddin, Glen Gallant
-
Publication number: 20110079030Abstract: A cooling system for a vehicle comprises a compressor for compressing refrigerant, the compressor being adapted to be driven by a power source installed in the vehicle, a condenser for receiving compressed refrigerant from the compressor, an expansion device for expanding refrigerant from the condenser, and a liquid-to-liquid heat exchanger for receiving refrigerant from the expansion device and exchanging heat between the refrigerant and a liquid. The liquid may comprise a coolant, and a pump may be provided for pumping the coolant through the heat exchanger to a point of use such as a cooling garment to cool personnel on board the vehicle. Alternatively, the liquid may be a drinkable liquid which is pumped through the heat exchanger to a suitable dispensing system to provide an on-board supply of cool drinking liquid.Type: ApplicationFiled: December 13, 2010Publication date: April 7, 2011Applicant: ALLEN-VANGUARD TECHNOLOGIES INC.Inventors: Daniel Reddin, Glen Gallant
-
Publication number: 20110079025Abstract: A thermal storage device for generating a thermal storage medium from a fluid and including a storage tank for containing the fluid, a refrigeration system having a heat exchanger positioned in the storage tank, a pump for pumping the fluid through the storage tank, a storage medium detection device, and a controller. The storage medium detection device generates a signal corresponding to at least one parameter of the pump. The controller controls the refrigeration system in one of a first mode and a second mode based on the signal. The at least one heat exchanger removes heat from the fluid to generate the thermal storage medium thereon when the refrigeration system operates in the first mode, and the at least one heat exchanger does not remove heat from the fluid thereby terminating generation of the thermal storage medium when the refrigeration system operates in the second mode.Type: ApplicationFiled: October 2, 2009Publication date: April 7, 2011Applicant: THERMO KING CORPORATIONInventors: William F. Mohs, Bernard Wayne Benson
-
Publication number: 20110079032Abstract: A heat pump refrigerant system has a compressor for delivering a compressed refrigerant to a reversing refrigerant flow control device. The reversing refrigerant flow control device selectively delivers refrigerant to an outdoor heat exchanger in a cooling mode of operation, and to an indoor heat exchanger in a heating mode of operation. Refrigerant from an outdoor heat exchanger passes through an expansion device to an indoor heat exchanger in a cooling mode, and from the indoor heat exchanger through an expansion device and to the outdoor heat exchanger in a heating mode. A reheat circuit includes a reheat heat exchanger positioned to be in the path of air delivered over the indoor heat exchanger and into an environment to be conditioned. The reheat heat exchanger and outdoor heat exchanger both are provided by microchannel heat exchangers.Type: ApplicationFiled: July 7, 2009Publication date: April 7, 2011Inventors: Michael F. Taras, Alexander Lifson