And Subsequently Restored To Receptacle As Liquid Patents (Class 62/48.2)
  • Patent number: 10151521
    Abstract: A method for cooling a plant for superconductive cables is provided, where the plant includes two thermally insulated end closures (1, 2) and at least one thermally insulated, tubular cryostat (3) arranged between the end closures, in which at least one superconductive cable is arranged. Liquid nitrogen contained in a cooling agent supply is pumped by means of a pump (9) through a first end closure and the cryostat to a second end closure. At least one vacuum insulated tank (7) is used for the cooling agent supply, where the tank (7) contains nitrogen at operating temperature and out of which the nitrogen is pumped. For making available a quantity of liquid nitrogen necessary for operating the plant, the supply of liquid nitrogen contained in the tank (7) is supplemented during operation or is switched over to another tank (10) containing liquid nitrogen.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 11, 2018
    Assignee: NEXANS
    Inventors: Klaus Schippl, Mark Stemmle, Frank Schmidt
  • Patent number: 9982843
    Abstract: A system for maintaining a substantially constant pressure within an ullage space of a cryogenic storage tank is provided. The system includes a compressor configured to receive fuel gas from the cryogenic storage tank, and compress the fuel gas to produce heated fuel gas. The system further includes a heat exchanger in flow communication with the compressor and configured to cool the heated fuel gas to produce cooled fuel gas, and a turbine in flow communication with the heat exchanger and configured to expand the cooled fuel gas to produce a gas and liquid mixture having a predetermined liquid to gas ratio, and discharge the gas and liquid mixture into the cryogenic storage tank.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 29, 2018
    Assignee: The Boeing Company
    Inventor: Ronald Tatsuji Kawai
  • Patent number: 9927068
    Abstract: Systems and methods for optimizing the recondensation of boiloff gas in liquid natural gas storage tanks are presented. In especially preferred aspects of the inventive subject matter, BOG from a storage tank is condensed using refrigeration content of a portion of LNG sendout in a direct or indirect manner, and the BOG condensate and LNG sendout portion are combined to form a subcooled stream that is then combined with the balance of the LNG sendout, to be fed to a high pressure pump. Contemplated recondensation operations advantageously occur without using otherwise needed large volume recondensers. Moreover, the condensing and subcooling operations are decoupled from the LNG sendout rate.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: March 27, 2018
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 9759382
    Abstract: A method for filling up a storage tank (e.g., a vehicle tank) with a gaseous, pressurized medium, in particular in the form of hydrogen, in which a supply tank system for storing the hydrogen is connected with the storage tank to be filled by way of a tank feed line and a fueling valve, wherein, prior to filling up the storage tank with aforesaid medium with the fueling valve closed, a flow of the medium for cooling the tank feed line is guided through the tank feed line at a predefinable target temperature, and removed from the tank feed line through a line that branches away upstream from the fueling valve. The disclosure further provides for a fueling facility for filling up a storage tank.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: September 12, 2017
    Assignee: Linde Aktiengesellschaft
    Inventors: Robert Adler, Georg Siebert, Martin Pfandl, Michael Stefan
  • Patent number: 9752824
    Abstract: A low-temperature device for separating and purifying gas based on a small-sized low-temperature refrigerating machine includes a primary, secondary and quaternary heat exchanger, at least one small-sized low-temperature refrigerating machine, and at least one liquid collecting tank. The small-sized low-temperature refrigerating machine includes a first cold head and a second cold head, the secondary heat exchanger is provided on the first cold head to form a primary cold head heat exchanger, the quaternary heat exchanger is provided on the second cold head to form a secondary cold head heat exchanger, a mixed gas outlet is connected to an inlet of the primary cold head heat exchanger. By using primary and secondary cold heads of the small-sized low-temperature refrigerating machine as cold sources, gases having different condensing temperature are liquefied and solidified separately, and two or more gases can be separated and purified at a lower cost.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 5, 2017
    Assignee: CSIC PRIDE (NANJING) CRYOGENIC TECHNOLOGY CO., LTD.
    Inventors: Wenqing Dong, Wei Chao, Jie Chen, Ao Li, Jinlin Gao
  • Patent number: 9562717
    Abstract: The present invention relates to a single cycle mixed refrigerant process for industrial cooling applications, for example, the liquefaction of natural gas. The present invention also relates to a refrigeration assembly configured to implement the processes defined herein and a mixed refrigerant composition usable in such processes.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: February 7, 2017
    Assignee: The University of Manchester
    Inventors: Jin-Kuk Kim, Xuesong Zheng
  • Patent number: 9395048
    Abstract: A fluid management system for a cryogenic tank may include a liquid acquisition device and a spray injection system. The cryogenic tank may include a tank wall and may contain bulk tank fluid. The liquid acquisition device may acquire and contain cryogenic fluid in substantially liquid phase. The liquid acquisition device may be mounted in spaced relation to the tank wall. The spray injection system may receive the liquid from the liquid acquisition device and may spray the liquid into the bulk tank fluid.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: July 19, 2016
    Assignee: The Boeing Company
    Inventors: Gary D. Grayson, Edwin C. Cady
  • Patent number: 9388944
    Abstract: Systems and methods are disclosed that expand environmental support for an HVAC system with an HVAC fluid circulating throughout by vaporizing a cryogen; and sparging the vaporized cryogen to dispense sparge bubbles to the HVAC fluid to cool the HVAC fluid.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: July 12, 2016
    Assignee: REFLECT SCIENTIFIC INC.
    Inventors: Boyd Bowdish, John Hammerman
  • Patent number: 9097329
    Abstract: There is provided transmission module (10) for a tractor which is selectively configurable between a CVT arrangement and a multi-ratio powershift transmission arrangement. The module comprises an epicyclic unit (13) in which a first gear element of the epicyclic is driven mechanically from the input shaft (11) and a second gear element of the epicyclic acts as an output of the transmission module. By simply connecting either a CVT unit (24) or a pair of clutches (80) between the input shaft and a third gear element the module (10) can be converted to the desired transmission arrangement. This delivers benefits in a factory for example whereby a large proportion of the assembly can be completed before tailoring the transmission to a customers requirements, thus reducing lead times on delivery.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: August 4, 2015
    Assignee: Valtra Oy Ab
    Inventors: Ville Viitasalo, Timo Ruokola
  • Publication number: 20150068222
    Abstract: The boil-off gas discharged from a liquid hydrogen storage tank on a liquid hydrogen transport vessel (16) is introduced into the liquid hydrogen stored within liquid hydrogen storage tanks (19, 20) disposed on the ground by passing through a boil-off gas introduction path (17). At least a portion of the boil-off gas is re-liquefied by means of the cold temperature of the liquid hydrogen. The boil-off gas that was not re-liquefied and the gasified hydrogen generated as a consequence of the liquid hydrogen within the liquid hydrogen storage tanks (19, 20) gasifying are mixed with raw material hydrogen by being supplied to the raw material hydrogen path (11) of a liquid hydrogen production device (HS) by passing through a gasified hydrogen discharge path (21). The boil-off gas and the gasified hydrogen are re-liquefied by means of the liquid hydrogen production device (HS).
    Type: Application
    Filed: April 17, 2013
    Publication date: March 12, 2015
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kazuhide Hakamada, Seiji Yamashita, Toshihiro Kkomiya, Shoji Kamiya, Kenjiro Shindo
  • Patent number: 8950194
    Abstract: In order to minimize the loss of cryogen during transportation of superconductive magnet systems, or indeed at any time that the refrigerator is turned off, part of the boil-off gas is directed from the cryogen vessel through the refrigerator interface and past the refrigerator to cool the refrigerator. Some of the heat conducted along the refrigerator into the system is intercepted and removed by that part of the boil-off gas. The heat load onto the cryogenic vessel is thereby reduced, which in turn reduces the boil-off of cryogen from the cryogenic vessel. This part of the boil-off gas is then vented from the system along with the remainder of the boil-off gas, for example to leave the cryogenic liquid vessel via the access neck.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: February 10, 2015
    Assignee: Siemens PLC
    Inventors: Timothy John Hughes, Stephen Paul Trowell, Keith White
  • Patent number: 8950195
    Abstract: A thermodynamic pump for provides gaseous hydrogen employing a plurality of liquid hydrogen (LH2) tanks sequentially pressurized with gaseous hydrogen (GH2) from an accumulator. A heat exchanger receiving LH2 from each of the plurality of tanks as sequentially pressurized returns pressurized GH2 to the accumulator for supply to an engine.
    Type: Grant
    Filed: December 18, 2010
    Date of Patent: February 10, 2015
    Assignee: The Boeing Company
    Inventor: Daniel A. Watts
  • Publication number: 20150007585
    Abstract: A system for maintaining a substantially constant pressure within an ullage space of a cryogenic storage tank is provided. The system includes a compressor configured to receive fuel gas from the cryogenic storage tank, and compress the fuel gas to produce heated fuel gas. The system further includes a heat exchanger in flow communication with the compressor and configured to cool the heated fuel gas to produce cooled fuel gas, and a turbine in flow communication with the heat exchanger and configured to expand the cooled fuel gas to produce a gas and liquid mixture having a predetermined liquid to gas ratio, and discharge the gas and liquid mixture into the cryogenic storage tank.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Inventor: Ronald Tatsuji Kawai
  • Patent number: 8893515
    Abstract: A LNG storage and regasification plant includes a reliquefaction unit in which boil-off vapors from the storage tanks are re liquefied and recycled back to the LNG storage tanks for tank pressure and Wobbe index control. Preferably, LNG cold is used for reliquefaction and operational flexibility is achieved by feeding a portion of the pressurized boil-off gas to a fuel gas header and/or to be recondensed by the sendout LNG.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: November 25, 2014
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Publication number: 20140290279
    Abstract: A liquefied gas treatment system includes: a first stream of boil-off gas, which is generated from the liquefied natural gas in the cargo tank and is discharged from the cargo tank; a second stream of the boil-off gas, which is supplied as fuel to the engine in the first stream; and a third stream of the boil-off gas, which is not supplied to the engine in the first stream. The first stream is compressed in a compressor and is then branched into the second stream and the third stream. The third stream is liquefied by exchanging heat with the first stream in a heat exchanger, so that the boil-off gas is treated without employing a reliquefaction apparatus using a separate refrigerant.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 2, 2014
    Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD
    Inventors: Joon Chae Lee, Dong Kyu Choi, Young Sik Moon, Seung Kyo Jung, Jeheon Jung, Nam Soo Kim
  • Publication number: 20140174105
    Abstract: A system in one embodiment includes a heat exchanger, a detection unit, and a controller. The heat exchanger includes a first passage and a second passage configured for exchange of heat therebetween. The first passage is configured to receive a boil-off gas stream of a first cryogenic fluid. The second passage is configured to receive a liquid stream of a second cryogenic fluid. The detection unit is configured to detect a characteristic of the boil-off gas stream. The controller is configured to, responsive to information acquired from the detection unit corresponding to the characteristic, control the flow of the second cryogenic fluid to provide sufficient exchange of heat from the boil-off gas stream via the heat exchanger to condense at least a portion of the boil-off gas stream. A liquid stream of the first cryogenic fluid is output from the first passage and returned to a first tank.
    Type: Application
    Filed: December 24, 2012
    Publication date: June 26, 2014
    Applicant: General Electric Campany
    Inventor: General Electric Campany
  • Publication number: 20140102133
    Abstract: The disclosure relates to a method and apparatus for cooling, preferably liquefying a boil off gas (BOG) stream from a liquefied cargo in a floating transportation vessel, said liquefied cargo having a boiling point of greater than ?110° C.
    Type: Application
    Filed: April 3, 2012
    Publication date: April 17, 2014
    Applicant: Babcock Integrated Technology Limited
    Inventor: Alan Roderick Duckett
  • Patent number: 8671698
    Abstract: A cryocooler for liquefying gas in which the neck of the dewar or cryostat includes a cold end of a cryocooler with the first stage cooling station, the first stage regenerator, the second stage cooling station, the second stage regenerator, and a condenser thermally coupled to the second cooling station. Radiation baffles are also present within the neck portion of the dewar between the storage portion for the dewar and the condenser, such that when the cryocooler is turned off, the radiation baffles reduce heat radiation on the cryogen in the storage section of the dewar.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: March 18, 2014
    Assignee: Cryomech, Inc.
    Inventor: Chao Wang
  • Publication number: 20140053770
    Abstract: A specialized vessel, of either ship or barge form, that is capable of holding a large number of ISO-sized intermodal LNG tanks and is configured to have the characteristics of both a tanker vessel (e.g., a gas carrier) and a container vessel. The intermodal LNG tanks connect to a piping system of the marine vessel and are thereby interconnected so as to allow the interconnected intermodal LNG tanks to behave as if they constitute a typical LNG vessel bulk liquid tank to facilitate efficient loading at a typical marine LNG terminal. The containerized intermodal LNG tanks are capable of discharging liquids to a marine terminal as if in a bulk mode, or of being disconnected from the common interconnection system to allow lift-off discharge of the intermodal LNG tanks at a typical cargo container port so that the intermodal LNG tanks can enter the existing intermodal transportation system.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 27, 2014
    Applicant: ARGENT MARINE MANAGEMENT, INC.
    Inventor: Gary W. Van Tassel
  • Patent number: 8650887
    Abstract: A cryogenic storage tank comprises a partition that divides a cryogen space into a main storage space and an auxiliary space. A valve disposed inside the cryogen space is associated with a first fluid passage through the partition. The valve comprises a valve member that is actuatable by fluid forces within the cryogen space. A second fluid passage through the partition comprises a restricted flow area that is dimensioned to have a cross-sectional flow area that is smaller than that of a fill conduit such that there is a detectable increase in back-pressure when the main storage space is filled with liquefied gas.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 18, 2014
    Assignee: Westport Power Inc.
    Inventors: Gregory Charles Harper, Adrian Post
  • Patent number: 8650889
    Abstract: A turret subassembly for use as part of a cryostat, the turret subassembly comprising a vent tube (32) housing an auxiliary vent (40); a refrigerator sock (34) for housing a refrigerator; a termination box (30) linking the vent tube and the refrigerator sock, and having an opening (52) in one wall (54); and means (38) for attachment of the turret subassembly to a cryogen vessel (12).
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: February 18, 2014
    Assignee: Siemens Plc
    Inventors: Martin Howard Hempstead, Stephen Paul Trowell
  • Publication number: 20140041398
    Abstract: A boil-off gas processing apparatus for reliquefying a boil-off gas (22) generated within a liquefied gas tank (2) storing a liquefied gas (21) and returning the reliquefied gas to the interior of the liquefied gas tank (2) includes a boil-off gas discharge line (3) configured to discharge the boil-off gas (22) from the liquefied gas tank (2) to outside, and a boil-off gas reliquefaction line (4) configured to immerse at least part of the boil-off gas discharge line (3) in the liquefied gas (21) within the liquefied gas tank (2). The boil-off gas reliquefaction line (4) includes a pressure holding device (42) configured to maintains a pressure necessary for reliquefaction of the boil-off gas (22) and has a length (L) sufficient to be able to absorb an amount of heat necessary for reliquefaction of the boil-off gas (22).
    Type: Application
    Filed: April 27, 2012
    Publication date: February 13, 2014
    Applicant: JAPAN MARINE UNITED CORPORATION
    Inventor: Eiji Aoki
  • Patent number: 8643367
    Abstract: A cryogenic system for a superconducting magnet comprises a closed-loop cooling path. The closed-loop cooling path comprises a magnet cooling tube thermally coupled to the superconducting magnet. The magnet cooling tube comprises a cryogen flow passage. The closed-loop cooling tube further comprises a re-condenser is fluidly coupled to the magnet cooling tube through tube sections and a liquid cryogen container fluidly coupled between the magnet cooling tube and the re-condenser. At least one gas tank is fluidly coupled to the magnet cooling tube through a connection tube.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 4, 2014
    Assignee: General Electric Company
    Inventors: Xianrui Huang, Yan Zhao, Tao Zhang, Anbo Wu, Evangelos Trifon Laskaris, Paul St. Mark Shadforth Thompson
  • Publication number: 20140026597
    Abstract: A cryogenic fuel storage system for an aircraft is disclosed including a cryogenic fuel tank having a first wall forming a storage volume capable of storing a cryogenic liquid fuel; an inflow system capable of flowing the cryogenic liquid fuel into the storage volume; an outflow system adapted to deliver the cryogenic liquid fuel from the cryogenic fuel storage system; and a vent system capable of removing at least a portion of a gaseous fuel formed from the cryogenic liquid fuel in the storage volume.
    Type: Application
    Filed: September 30, 2011
    Publication date: January 30, 2014
    Inventors: Michael Jay Epstein, Randy M. Vondrell, Robert Harold Weisgerber, Narendra Joshi, Thomas Bonser
  • Patent number: 8575790
    Abstract: The Superconducting Electrodynamic Turbine produces thrust by transferring momentum to the Earth, via the geomagnetic field. A pair of counter-rotating electrodynamic rotors, that are made from a Superconductor, act together to displace the surrounding geomagnetic field. The rotation of a Superconductor in the geomagnetic field, referred to as the exciting field, creates persistent eddy currents in the Superconductor. Lenz's Law states that an induced eddy current produces a magnetic field that opposes the relative change in the exciting field. A continuous increment of energy, or work, has to be expended to overcome the opposing force and to keep the counter-rotating electrodynamic rotors rotating at a constant rate. This work is transferred to the magnetic field. The Electrodynamic Turbine produces a unidirectional displacement in the exciting magnetic field, creating a force or thrust.
    Type: Grant
    Filed: May 1, 2010
    Date of Patent: November 5, 2013
    Inventor: William Ivan Ogilvie
  • Publication number: 20130227967
    Abstract: An LNG vaporization equipment is provided with: a nitrogen supply apparatus (2); a heating apparatus (4) that heats nitrogen supplied from the nitrogen supply apparatus; vaporizers (6A, 6B, 6C) that vaporize LNG by means of a heat exchange between the nitrogen heated by the heating apparatus and the LNG that is fed out from an LNG tank (1); and a recirculation line (7) which, after the nitrogen after the heat exchange that has been discharged from the vaporizers has been used to reduce the amount of BOG that is generated or has been used for reliquefaction, recirculates it to the heating apparatus. By employing this structure, it is possible to provide the LNG vaporization equipment that is able to use the cooling energy of LNG to reduce the quantity of BOG that is generated, or for reliquefaction.
    Type: Application
    Filed: November 11, 2011
    Publication date: September 5, 2013
    Inventor: Yusuke Yamanaka
  • Patent number: 8499569
    Abstract: Marine LNG carrier and method of operating the marine LNG carrier. The LNG carrier carries LNG in at least one tank. Gas composed of evaporated LNG within the at least one tank is removed. The gas is fed to at least one gas consuming prime mover of the LNG carrier. Power is provided with the at least one gas consuming prime mover. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: August 6, 2013
    Assignee: Argent Marine Management, Inc.
    Inventor: Gary W. Van Tassel
  • Publication number: 20120279235
    Abstract: One embodiment of the present invention is a portable natural gas discharge system for discharging compressed natural gas into a receiving location. The system comprises a portable chassis for holding the natural gas discharge system and all subcomponents, an inlet port for receiving the natural gas at an inlet pressure higher than a pressure of the receiving location, an expansion valve for regulating pressure of the natural gas to a stable intermediate pressure, a heat exchanger for heating up the cooled natural gas stream as a result of cooling due to expansion, a regulator for regulating a flow of the heated natural gas stream through the heat exchanger and out of the portable natural gas discharge system, and a discharge port for discharging the heated natural gas stream into the receiving location.
    Type: Application
    Filed: July 18, 2012
    Publication date: November 8, 2012
    Applicant: OSCOMP SYSTEMS INC.
    Inventor: Pedro T. Santos
  • Publication number: 20120240600
    Abstract: A boil-off gas (BOG) stream (15) from a liquefied hydrocarbon storage tank is split into a BOG heat exchanger feed stream (25) and a BOG bypass stream (35). The BOG heat exchanger feed stream (25) is heat exchanged in a BOG heat exchanger (40) against a process stream (135), thereby providing a warmed BOG stream (45) and a cooled process stream (195). The warmed BOG stream (45) is combined with the BOG bypass stream (35) to provide a temperature controlled BOG stream (55).
    Type: Application
    Filed: November 16, 2010
    Publication date: September 27, 2012
    Inventors: Peter Marie Paulus, Kornelis Jan Vink
  • Patent number: 8256230
    Abstract: A method for reliquefying boil-off gas generated in a cargo tank of a liquefied natural gas ship generally includes the steps of compressing boil-off gas generated in the cargo tank with a compressor, sub-cooling the compressed boil-off gas in a heat exchanger, feeding the liquefied gas to a gas phase separator, venting flash gas generated in the gas phase separator through a first pipe, feeding the vented flash gas from the gas phase separator to a gas combustion unit of the ship via the first pipe, oxidizing the vented flash gas in the gas combustion unit, diverting a portion of the compressed boil-off gas from the compressor through a second pipe, feeding the diverted portion of compressed boil-off gas from the compressor to an upper region of the gas-phase separator and returning liquefied gas from the gas-phase separator to the cargo tank.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: September 4, 2012
    Inventors: Hyung-Su An, Nam-Su Kim, Jin-Yeol Yun, Hyun-Jin Kim, Hyun-Ki Park
  • Patent number: 8238988
    Abstract: A superconducting magnet assembly and method of cooling a superconducting magnet assembly.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: August 7, 2012
    Assignee: General Electric Company
    Inventor: Ernst Wolfgang Stautner
  • Patent number: 8192532
    Abstract: A fuel tank safety system includes a heat exchanger in flow communication with a cabin conditioning system, a blower configured to withdraw a quantity of ullage gas from a vehicle fuel tank for routing through the heat exchanger, and conduit interconnecting the fuel tank, the blower, and the heat exchanger. The heat exchanger is configured to reduce a temperature of the ullage gas using cooling providing by the cabin conditioning system and thus reduce the fuel content (or fuel-air ratio) of the ullage below threshold required for combustion.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: June 5, 2012
    Assignee: The Boeing Company
    Inventor: Alankar Gupta
  • Publication number: 20120011860
    Abstract: A method for storage and transport of LPG on LPG carriers, in particular two cargoes of different LPG types on same shipment, having reliquefaction units (300, 400) in which vaporized gases are condensed and then returned into at least one cargo tank (100) for the respective LPG cargo type. The method is further comprising: using the reliquefaction units (300, 400), at a minimum one running, as to condense vapour from the first cargo type; passing the condensed vapour through a heat exchanger (500); simultaneously flowing vapour from the second cargo type through the heat exchanger (500) as to condense vapour by means of heat exchanging with the condensed vapour; and returning the condensed vapours leaving the heat exchanger back into the respective cargo types. The present invention is also disclosing a system for storage and transport of LPG on LPG carriers.
    Type: Application
    Filed: May 3, 2010
    Publication date: January 19, 2012
    Applicant: Hamworthy Oil & Gas Systems AS
    Inventor: Carl Jørgen Rummelhoff
  • Patent number: 8065883
    Abstract: A method and apparatus for the controlled storage of liquefied gases such as liquefied natural gas in an enclosed insulated container, in which part of the liquid is withdrawn and fed to an external refrigeration unit for subcooling and the subcooled liquid is reintroduced into the container via one or more valve-controlled headers under the control of a control system operated in response to pressure and temperature signals from within the container, wherein the level of subcooling is matched to the heat inleak into the container and most or all of the subcooled liquid is reintroduced directly into the stored liquid so as to maintain stable conditions in the stored liquid and to minimise evaporation thereof.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: November 29, 2011
    Assignee: The BOC Group plc
    Inventor: Josef Pozivil
  • Publication number: 20110179808
    Abstract: A cryogenic system comprises: a liquid helium vessel containing liquid helium (LHe) in which are immersed superconducting magnet windings (20); a helium condenser (30); a neck (32) providing fluid communication between the liquid helium vessel and the helium condenser; a heater (42) disposed outside of and not surrounding the neck; and a thermally conductive passive deicing member (50) disposed in the neck, the thermally conductive passive deicing member thermally coupled with the heater to conduct heat from the heater into the neck. A deicing method for deicing a neck (32) of a liquid helium vessel of a superconducting magnet system comprises generating heat at a location (30, 42) outside of the neck and conducting an amount of the generated heat effective for deicing the neck from outside of the neck through an opening of the neck and into the neck to deice the neck.
    Type: Application
    Filed: September 9, 2009
    Publication date: July 28, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Alexander Kagan, Chandra T. Reis
  • Publication number: 20110173996
    Abstract: A method for providing cooling to the superconducting coils of a magnet with cryogenic helium gas at a helium production facility is disclosed. The cryogenic helium gas is fed to the magnet where the helium provides cooling. Cryogenic liquid helium provides additional cooling and fills the helium reservoir. Methods are also provided for recovering vaporized helium from the filling of a magnet and when the magnet is undergoing energization at the helium production facility.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 21, 2011
    Inventors: Mark Glajchen, Gary Fiorino, Thomas Pivonka
  • Publication number: 20110101982
    Abstract: A cryogenic system for a superconducting magnet comprises a closed-loop cooling path. The closed-loop cooling path comprises a magnet cooling tube thermally coupled to the superconducting magnet. The magnet cooling tube comprises a cryogen flow passage. The closed-loop cooling tube further comprises a re-condenser is fluidly coupled to the magnet cooling tube through tube sections and a liquid cryogen container fluidly coupled between the magnet cooling tube and the re-condenser. At least one gas tank is fluidly coupled to the magnet cooling tube through a connection tube.
    Type: Application
    Filed: October 27, 2010
    Publication date: May 5, 2011
    Inventors: Xianrui HUANG, Yan Zhao, Tao Zhang, Anbo Wu, Evangelos Trifon Laskaris, Paul St. Mark Shadforth Thompson
  • Patent number: 7921656
    Abstract: A design for equipment and process for reliquefaction of LNG boiloff gas, primarily for shipboard installation, has high thermodynamic efficiency and lower capital cost, smaller size (volume, footprint), lower weight, and less need for maintenance than systems utilizing the prior art. The main refrigerant gas compressor is reduced to a single stage turbocompressor. Optional elements include: compression of boiloff gas at ambient temperature; compression of boiloff gas in one or two stages; turboexpansion of refrigerant gas incorporating one or two turboexpanders; turboexpander energy recovery by mechanical loading, compressor drive, or electric generator; refrigerant sidestream for cooling at the lowest temperatures.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 12, 2011
    Assignee: AMCS Corporation
    Inventor: Robert Anthony Mostello
  • Publication number: 20110056238
    Abstract: A LNG storage and regasification plant includes a reliquefaction unit in which boil-off vapors from the storage tanks are re liquefied and recycled back to the LNG storage tanks for tank pressure and Wobbe index control. Preferably, LNG cold is used for reliquefaction and operational flexibility is achieved by feeding a portion of the pressurized boil-off gas to a fuel gas header and/or to be recondensed by the sendout LNG.
    Type: Application
    Filed: April 7, 2009
    Publication date: March 10, 2011
    Applicant: FLUOR TECHNOLOGIES CORPORATION
    Inventor: John Mak
  • Publication number: 20110041518
    Abstract: A method and system of storing and transporting gases comprising mixing the gases with liquid natural gas to form a mixture. The mixture is a liquid-liquid mixture or slurry, and is stored in vessel configured for maintaining the mixture at a first location. The mixture is transported to a second location for storage in vessel for maintaining the mixture. The mixture is removed from the second location storage vessel for separation and use in additional processes.
    Type: Application
    Filed: February 11, 2010
    Publication date: February 24, 2011
    Applicant: SYNFUELS INTERNATIONAL, INC.
    Inventors: Edward R. Peterson, Thomas A. Rolfe
  • Publication number: 20100212329
    Abstract: A flowline system for transferring cryogenic liquids between a cryogenic liquid storage tank and a cryogenic liquid receiving/loading facility, and a method of maintaining the system at or marginally above cryogenic temperature during periods between transfer of cryogenic liquids between the cryogenic liquid storage tank and the cryogenic liquid receiving/loading facility are provided. The flowline system has a main transfer conduit and a vapour return line in fluid communication with the cryogenic liquid storage tank and the cryogenic liquid receiving/loading facility. A cooling medium line is provided that is in fluid communication with the main transfer conduit, the vapour return line, and a source of cooled boil-off gas, wherein the cooled boil-off gas is at or marginally above cryogenic temperature.
    Type: Application
    Filed: July 9, 2008
    Publication date: August 26, 2010
    Applicant: LNG Technology Pty Ltd
    Inventor: Paul Bridgwood
  • Publication number: 20100180632
    Abstract: Provided are a pileus-gills type helium condenser and an apparatus, including the same, for condensing helium. The pileus-gills type helium condenser includes: a body having a hemispheric shape and formed of a highly thermally conductive metal; a plurality of cooling fins collectively having a pileus gills-like shape and arranged along the circumference of the body to be spaced apart from one another; and a through-hole formed in the center of the body to be adjacent to the cooling fins.
    Type: Application
    Filed: July 7, 2009
    Publication date: July 22, 2010
    Applicant: KOREA INSTITUTE OF RADIOLOGICAL & MEDICAL SCIENCES
    Inventors: Bong Hwan Hong, Yu Seok Kim, Joonsun Kang, Dong Hyun An, In Su Jung, Hong Suk Chang, Kun Uk Kang
  • Publication number: 20100162731
    Abstract: Cryogenic cooling apparatus comprises a chamber for containing coolant and a neck which opens into the chamber. A sleeve is provided which is located, when in use, within the neck. The apparatus includes a cooling element which is located exterior to the sleeve when the sleeve is in use. The sleeve comprises a heat transfer member adapted to cause the cooling element to remove heat from the interior of the sleeve through the use of heat transfer member.
    Type: Application
    Filed: September 22, 2009
    Publication date: July 1, 2010
    Applicant: Oxford Instruments Superconductivity Limited
    Inventor: Paul NOONAN
  • Publication number: 20100139316
    Abstract: An operating system of a liquefied natural gas ship for performing sub-cooled liquefaction of boil-off gas includes a boil-off gas compressor, a cryogenic heat exchanger connected to a refrigerator system, and a first check valve and a first pressure control valve, installed in a pipe between a liquefied natural gas phase separator and a gas combustion unit, and a second check valve and a second pressure control valve, installed in a parallel pipe connected to the pipe in parallel. The parallel pipe is connected to a pipe between the boil-off gas compressor and the cryogenic heat exchanger such that boil-off gas is supplied to an upper vapor region of the liquefied natural gas phase separator. Thus, pressure and level of the liquefied natural gas phase separator are stably controlled. Power consumption is effectively reduced, and economical efficiency is achieved by stable operating pressure and level of the liquefied natural gas phase separator.
    Type: Application
    Filed: January 15, 2010
    Publication date: June 10, 2010
    Inventors: Hyung-Su An, Nam-Su Kim, Jin-Yeol Yun, Hyun-Jin Kim, Hyun-Ki Park
  • Patent number: 7721557
    Abstract: A method and system are provided for extracting propane vapors from a propane storage tank, and condensing the extracted vapors to form a useable liquid propane product.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 25, 2010
    Inventor: John Stearns
  • Publication number: 20100043454
    Abstract: A turret subassembly for use as part of a cryostat, the turret subassembly comprising a vent tube (32) housing an auxiliary vent (40); a refrigerator sock (34) for housing a refrigerator; a termination box (30) linking the vent tube and the refrigerator sock, and having an opening (52) in one wall (54); and means (38) for attachment of the turret subassembly to a cryogen vessel (12).
    Type: Application
    Filed: September 13, 2007
    Publication date: February 25, 2010
    Inventors: Martin Howard Hempstead, Stephen Paul Trowell
  • Patent number: 7617848
    Abstract: A method and device for filling a container with liquid gas from a storage tank includes removing the liquefied gas from the storage tank and feeding it to a container via a liquid feed line through use of a delivery system. The gas is compressed in the container and is removed from the container in its gaseous state and is at least partially liquefied by cooling in a heat exchanger. The at least partially liquefied gas is fed into the liquid feed line at the suction end of the delivery device.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: November 17, 2009
    Assignee: Messer France S..A.S.
    Inventors: Patrick Matheoud, Jean-Claude Zimmer
  • Patent number: 7614241
    Abstract: A design for equipment and process for reliquefaction of LNG boiloff gas, primarily for shipboard installation, has high thermodynamic efficiency and lower capital cost, smaller size (volume, footprint), lower weight, and less need for maintenance than systems utilizing the prior art. The main refrigerant gas compressor is reduced to a single stage turbocompressor. Optional elements include: compression of boiloff gas at ambient temperature; compression of boiloff gas in one or two stages; turboexpansion of refrigerant gas incorporating one or two turboexpanders; turboexpander energy recovery by mechanical loading, compressor drive, or electric generator; refrigerant sidestream for cooling at the lowest temperatures.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: November 10, 2009
    Assignee: AMCS Corporation
    Inventor: Robert Anthony Mostello
  • Publication number: 20090266086
    Abstract: Disclosed is an apparatus for containing LNG. The apparatus includes an LNG tank containing liquid phase LNG and boil-off gas of LNG, and an circulating device. The circulating device includes an intake port and a discharge port. The circulating device further includes an flowing pathway from the intake port to the discharge port that does not include a forced LNG liquefying device. The intake port is located in an upper portion of the LNG tank, and the discharge port is located in a lower portion of the LNG tank substantially lower than the intake port. The circulating device is configured to suction, through the intake port, boil-off gas from the upper portion of the LNG tank and to discharge boil-off gas, through the discharge port, to the lower portion of the LNG tank.
    Type: Application
    Filed: April 23, 2009
    Publication date: October 29, 2009
    Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: JUNG HAN LEE, DONG KYU CHOI, YOUNG SIK MOON, YOUNG SOO KIM
  • Patent number: 7581405
    Abstract: A storage vessel comprises a condenser for condensing boil-off vapor by direct heat exchange with cryogenic liquid feed to the vessel. The condenser comprises a packed arrangement of vapor-liquid contact packing that comprises a top end portion and a bottom end portion. At least said top end portion is open to the vapor space to allow entry of boil-off vapor into the arrangement. The bottom end portion is in fluid flow communication with the lower portion of the storage vessel. One advantage of the invention is that the condenser is open to the vapor space of the storage vessel thereby allowing boil-off vapor to be drawn into the condenser by the condensation action of the vapor.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: September 1, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Paul Higginbotham, Kelvin Graham Hayes, Declan Patrick O'Connor