With Conservation Of Cryogen By Reduction Of Vapor To Liquid Within Storage Receptacle Patents (Class 62/47.1)
  • Patent number: 10184614
    Abstract: A method for managing boil-off from an LNG tank located on board of an aircraft. The method, including removing the boil-off from the aircraft and disposing of the removed boil-off from the aircraft and an equipment assembly for use with an aircraft having an on-board LNG tank with a vent system having an outlet coupling, including a removal system configured to remove boil-off from the aircraft and a disposal system configured to dispose of the boil-off.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: January 22, 2019
    Assignee: General Electric Company
    Inventors: Michael Jay Epstein, Robert Harold Weisgerber
  • Patent number: 10151809
    Abstract: In order to extend the lifetime of a cooler and reduce down periods of an MRI apparatus due to the maintenance, a cooling capacity of the cooler 107 of the superconducting magnet is controlled so that cooling heat absorption almost equivalent to an amount of heat penetrating into the refrigerant vessel 202 of the superconducting magnet is exerted, and pressure in the refrigerant vessel 202 is maintained within an acceptable pressure range. In addition to this, at least either change amount of magnetic field strength or magnetic field homogeneity in an imaging space due to a pressure change in the refrigerant vessel 202 is compensated by the magnetic field adjustment unit.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: December 11, 2018
    Assignee: HITACHI, LTD.
    Inventor: Munetaka Tsuda
  • Patent number: 10107543
    Abstract: A method, a system, and an article of manufacture are disclosed for cryogenic cooling of systems operating at cryogenic temperatures or higher. Applications of this disclosure are as varied as trucking of meat and vegetable to mine sweeping and MRI systems. A cooling network is formed by coupling blocks of Thermal Energy Storage (TES) modules together with optional thermal switches or valves and optionally with an active cooling component to maintain a cryogenic temperature in a cryostat. The TES modules are combinations of thermal conducting elements to conduct heat and solid storage elements to absorb heat. The cooling component may be one or more cryocoolers for steady state and transient heat transfer conditions and may be coupled with the TES modules via thermal shunt connections. The thermal switches or valves may be deployed within the thermal shunts to control the flow of heat between different TES modules and cooling components, thus reconfiguring the cooling network.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: October 23, 2018
    Inventors: Shahin Pourrahimi, Leslie Bromberg
  • Patent number: 10066884
    Abstract: An apparatus is provided for maintaining a steady flow rate and pressure of a carbon dioxide stream at high pressure when a low-pressure source of the carbon dioxide varies with time. Liquid level in an accumulator that is sized to accommodate variations in supply rate is controlled by sub-cooling of liquid entering the accumulator and heating in the accumulator, the sub-cooling and heating being controlled by a pressure controller operable in the accumulator.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: September 4, 2018
    Assignee: Denbury Resources Inc.
    Inventor: Peter D. Guerra
  • Patent number: 10030815
    Abstract: Natural gas boiling off from LNG storage tanks located on board a sea-going vessel, is compressed in a plural stage compressor. At least part of the flow of compressed natural gas is sent to a liquefier operating on a Brayton cycle in order to be reliquefied. The temperature of the compressed natural gas from the final stage is reduced to below 0° C. by passage through a heat exchanger. The first compression stage is operated as a cold compressor and the resulting cold compressed natural gas is employed in the heat exchanger to effect the necessary cooling of the flow from the compression stage. Downstream of its passage through the heat exchanger the cold compressed natural gas flows through the remaining stages of the compressor. If desired, a part of the compressed natural gas may be supplied to the engines of the sea-going vessel as a fuel.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: July 24, 2018
    Assignee: CRYOSTAR SAS
    Inventors: Vincent Fuchs, Mathias Ragot
  • Patent number: 10008313
    Abstract: In a cryostat, in particular for use in a magnetic resonance imaging (MRI) system, and a method for reducing heat input into such a cryostat, an insert is provided that is adapted to be inserted into an opening of the cryostat. The insert is adapted to provide one or more passageways for a cryogen through the opening by defining at least one space between the outer surface of the insert and at least one part of the inner surface of the opening. This space allows the cryogen to pass over the part of the inner surface of the opening.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: June 26, 2018
    Assignee: Siemens Healthcare Limited
    Inventors: Patrick William Retz, Neil Charles Tigwell
  • Patent number: 9909804
    Abstract: A method of cooling using an extended binary refrigerant system containing methane and a C3 hydrocarbon such as propylene and/or propane is disclosed. The extended binary refrigerant from a compressor final discharge is separated into a methane-rich vapor fraction and at least one C3 rich liquid fraction so as to provide various temperatures and levels of refrigeration in various heat exchange stages. The method and corresponding refrigeration system can be utilized in plants utilizing low pressure or high pressure demethanizers.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: March 6, 2018
    Assignee: Lummus Technology Inc.
    Inventor: Charles Sumner
  • Patent number: 9863697
    Abstract: Described herein is a method and system for liquefying a natural gas feed stream to produce an LNG product. The natural gas feed stream is liquefied, by indirect heat exchange with a gaseous methane or natural gas refrigerant circulating in a gaseous expander cycle, to produce a first LNG stream. The first LNG stream is expanded, and the resulting vapor and liquid phases are separated to produce a first flash gas stream and a second LNG stream. The second LNG stream is then expanded, with the resulting vapor and liquid phases being separated to produce the second flash gas stream and a third LNG stream, all or a portion of which forms the LNG product. Refrigeration is recovered from the second flash gas by using said stream to sub-cool the second LNG stream or a supplementary LNG stream.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: January 9, 2018
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Julian Roberts, Yang Liu, Fei Chen
  • Patent number: 9829244
    Abstract: A small scale natural gas liquefaction plant is integrated with an LNG loading facility in which natural gas is liquefied using a multi-stage gas expansion cycle. LNG is then loaded onto an LNG truck or other LNG transport vehicle at the loading facility using a differential pressure control system that uses compressed boil off gas as a motive force to move the LNG from the LNG storage tank to the LNG truck so as to avoid the use of an LNG pump and associated equipment as well as to avoid venting of boil off vapors into the environment.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: November 28, 2017
    Assignee: Fluor Technologies Corporation
    Inventor: John Mak
  • Patent number: 9625209
    Abstract: A method for separating a feed gas, containing nitrogen and carbon monoxide as main components, in a distillation column: the feed gas is cooled in a heat exchanger; at least a portion of the feed gas, or at least a portion of a gas derived from the feed gas, is sent to a reboiler of the distillation column so as to condense the gas while producing a liquid, and optionally a gas; at least a portion of the liquid is sent to the distillation column; a nitrogen gas-rich flow is extracted from the distillation column; a carbon monoxide-rich flow is extracted from the distillation column, heated in the heat exchanger, and compressed so as to provide a carbon monoxide-rich material at production pressure.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: April 18, 2017
    Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Arthur Darde, Antoine Hernandez, Bernard Saulnier
  • Patent number: 9528758
    Abstract: A method and associated system for regulation of the cooling capacity of a cooling system that uses a gas expansion cooling circuit where the cooling principle is expansion of one or more gaseous cooling medium streams from a higher pressure to a lower pressure are described, characterised by the following steps: —reducing the amount of cooling medium which is circulated in the cooling circuit (100) temporarily in that a fraction of gaseous cooling medium is pre-cooled at a higher pressure and is extracted from the cooling circuit (100), —expanding the fraction of cooled gaseous cooling medium across an expansion device (102) to a lower pressure so that at least one part of liquid cooling medium separates, —separating the liquid from the non-condensed gas for temporary storage in a storage unit (104) so that the liquid is temporarily not circulated in the otherwise closed cooling circuit (100), —thereafter to return temporarily stored gaseous cooling medium from the storage unit (104) to the cooling circuit (
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: December 27, 2016
    Assignee: ARAGON AS
    Inventor: Inge L. Nilsen
  • Patent number: 9447751
    Abstract: A hybrid fuel supply system for an engine of a vessel is provided. The hybrid fuel supply system for the engine of the vessel includes: a compression device configured to compress boil-off gas (BOG) generated from liquefied natural gas (LNG) stored in an LNG cargo tank; a high pressure pump configured to compress LNG supplied from the LNG cargo tank; a vaporizer configured to vaporize the LNG compressed by the high pressure pump; and a dual fuel (DF) engine to which the BOG compressed through the compression device is supplied as fuel. The engine of the vessel uses high pressure gas compressed at 150 to 400 bar as fuel and is driven by at least one of the BOG compressed in the compression device and the LNG compressed in the high pressure pump.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: September 20, 2016
    Assignee: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Joon Chae Lee, Dong Kyu Choi, Young Sik Moon, Seung Kyo Jung, Jeheon Jung, Nam Soo Kim
  • Patent number: 9422147
    Abstract: A fluid dispenser has a housing in which fluid flow control components are located and at least one fluid conduit completing first and second fluid flow paths between the at least one fluid storage tank and a nozzle coupled to the housing. The fluid dispenser also has a fluid flow meter located along said fluid flow path, a control system, and a recirculation subsystem. The recirculation subsystem has a bypass valve located along one of the first and second flow paths. The bypass valve is operative to prevent fluid communication between the first and second fluid flow paths when the fluid dispenser is in use and to allow fluid communication between the first and second fluid flow paths when the fluid dispenser is not in use. Methods of measuring the flow rate of a fluid in the fluid dispenser are also disclosed.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: August 23, 2016
    Assignee: Gilbarco Inc.
    Inventors: Jack Francis Bartlett, Jonathan E. Deline, John E. Ingold, Michael Lawrence Jennings
  • Patent number: 9230724
    Abstract: A cooling system and a superconducting magnet apparatus employing the same. The cooling system includes: a thermal shield unit for thermally shielding a superconducting coil; a recondensing unit for recondensing an extremely low temperature refrigerant that cools down the superconducting coil. A cryocooler includes a body and an end portion extending from the body and inserted into the recondensing unit in order to directly contact the extremely low temperature refrigerant. A refrigerator chamber penetrates through the thermal shield unit and to which the cryocooler is attachably and detachably provided. A sealing member is disposed between the cryocooler and the refrigerator chamber to seal the recondensing unit.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: January 5, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Stephen M. Harrison
  • Patent number: 9163784
    Abstract: A device for reducing the temperature of a bombe, which stores liquefied petroleum gas (LPG) fuel and may be connected to a fuel supply line for supplying the fuel to an injector, using latent heat of LPG vaporization, may include a fuel pump installed in the bombe and connected to an end of the fuel supply line for pressurizing the fuel, a cut-off valve installed in the fuel supply line for selectively cutting off fuel supply to the injector, a fuel collection line branched from the fuel supply line to the inside of the bombe for collecting the supplied fuel into the bombe when the cut-off valve may be closed, and an injection nozzle connected to the fuel collection line and injecting the fuel collected through the fuel collection line into the inside of the bombe.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: October 20, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Ju Tae Song, Cheol Hun Cho, Myeong Hwan Kim, Chang Han Kim
  • Patent number: 9145848
    Abstract: A pressure sustaining system for an LPG bombe may include the LPG bombe, in which an LPG fuel may be injected and which may be equipped with a ventilation tunnel for emitting the air inside the LPG bombe, and a check valve unit, installed at an opening of the ventilation tunnel, with a fixed conversion pressure so as to keep an air pressure inside the LPG bombe above a predetermined value.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: September 29, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Ju-Tae Song
  • Publication number: 20150128617
    Abstract: In a cryogen cooling system for cooling a superconducting magnet, a cryogen vessel is linked to a cooling loop arrangement in thermal contact with the superconducting magnet. A recondensing chamber is arranged such that a lower extremity of the cryogen vessel is above a lower extremity of the recondensing chamber. A recondensing refrigerator is arranged to recondense cryogen gas within the recondensing chamber. A heater is positioned to heat gaseous cryogen within the recondensing chamber, and wherein the recondensing chamber is hydraulically connected to the cryogen vessel by a cryogen supply pipe. An upper end of the cryogen supply pipe is exposed to cryogen gas in the cryogen vessel and a lower end of cryogen supply pipe is exposed to an interior of the recondensing chamber towards or at its lower extremity.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 14, 2015
    Applicant: SIEMENS PLC
    Inventor: Vladimir Mikheev
  • Publication number: 20150080222
    Abstract: A cryogen recondensing system and a superconducting magnet apparatus including the cryogen recondensing system are provided. The cryogen recondensing system includes a primary reservoir configured to store cryogen for cooling a superconducting coil, a refrigerator configured to recondense gas cryogen of cryogen stored in the primary reservoir, a secondary reservoir configured to store gas cryogen, and a secondary reservoir tube configured to connect the primary reservoir to the secondary reservoir, and wherein the gas cryogen flows through the secondary reservoir tube.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 19, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Oh-soo KWON, Do-woon KIM, Jae-hyun SHIN
  • Patent number: 8973378
    Abstract: Systems and methods from removing heat generated by a heat sink of a magnetic resonance imaging (MRI) system are provided. One system includes a coldhead sleeve cooling arrangement for a coldhead of the MRI system. The coldhead sleeve cooling arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and a cooling system surrounding an outer surface of the coldhead sleeve. The cooling system uses helium gas to remove heat from the coldhead sleeve.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: March 10, 2015
    Assignee: General Electric Company
    Inventors: Longzhi Jiang, Jalal Zia, John Scaturro, Jr., William Einziger
  • Publication number: 20150063409
    Abstract: A method of heating a cryogenic liquid contained in a cryogenic tank including a gas headspace. The method includes heating the cryogenic liquid by injecting gas at higher temperature under a free surface of the cryogenic liquid.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 5, 2015
    Applicant: SNECMA
    Inventors: Bernard Juery, Arnaud Fournet, Pascal Bennetot, Ronan Gauther
  • Publication number: 20150033765
    Abstract: An apparatus for storing liquid air (a cryogenic mixture of about 80% liquid nitrogen and about 20% liquid oxygen) in a stable condition within a storage vessel by providing a heat exchanger in fluid communication with vaporized liquid air within vessel condense the vaporized liquid air back to liquid form. This will result in condensing the nitrogen-rich vapor into the mass as a liquid, thereby reducing ullage pressure, cooling the mass, and ultimately precluding oxygen-enrichment through boil-off. A cryocooler may be mounted externally to the vessel and in fluid communication with an interior of the vessel to condense liquid air vaporized within the vessel. The system may be used to supply air to safe haven areas of a mine or building, or piped in through a building HVAC system and/or mounted on vehicle.
    Type: Application
    Filed: April 5, 2012
    Publication date: February 5, 2015
    Inventor: Clayton E. Blalock
  • Publication number: 20140366561
    Abstract: Methods and systems for vaporizing and recovering LNG are provided. One method includes: a) heating at least a portion of the LNG to provide a boil-off gas stream and a liquid quench stream; b) routing the boil-off gas stream and the liquid quench stream to a quench system, wherein the quench system cools the boil-off gas stream to provide a quenched stream; and c) compressing the quenched stream to provide a compressed quenched stream.
    Type: Application
    Filed: May 16, 2014
    Publication date: December 18, 2014
    Applicant: CONOCOPHILLIPS COMPANY
    Inventors: Paul Raymond DAVIES, James Lee HARRIS, JR.
  • Patent number: 8893514
    Abstract: A cryogenic liquid storage system for a spacecraft comprising at least one liquid tank with an outer casing and an evacuated space arranged between the tank and the outer casing. The system further comprises a propellant management device made of material that is a good conductor of heat and that is cooled by a cryorefrigerator to localize the liquid inside the tank when in microgravity, a filler pipe situated in the portion of the tank that is at the bottom when the tank is on the ground, and that is surrounded by an evacuated insulating double wall and a purge pipe connecting the tank to the outer casing and presenting an internal length that is not less than half the diameter of the tank.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: November 25, 2014
    Assignee: SNECMA
    Inventor: Dominique Valentian
  • Publication number: 20140338370
    Abstract: A compressed natural gas storage and dispensing system having bulk storage tanks in fluid communication with a natural gas supply source; a compressor to produce compressed natural gas; dispensing storage tanks in fluid communication with the bulk storage tanks and in fluid communication with fuel dispensers; a liquified natural gas storage tank in fluid communication with the bulk storage tanks, wherein compressed natural gas resulting from vaporization of the liquified natural gas within the liquified natural gas storage tank is transferred to the bulk storage tanks as a supplemental source of compressed natural gas, or wherein liquified natural gas is vaporized in an ambient vaporizer and delivered to the bulk or dispensing storage tanks.
    Type: Application
    Filed: May 13, 2014
    Publication date: November 20, 2014
    Inventor: R. Keith Barker
  • Publication number: 20140260337
    Abstract: A method of producing natural gas from at least one reservoir, the method including the steps of producing the natural gas from the at least one reservoir; liquefying a first tranche of the natural gas to produce liquefied natural gas; and compressing a second tranche of the natural gas to produce a compressed natural gas.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: TULLOW GROUP SERVICES LIMITED
  • Publication number: 20140274723
    Abstract: A cooling device for a superconductor, in particular a high-temperature superconductor of a synchronous machine includes a cooling circuit for a coolant, wherein the coolant liquefied in a cold head having a condenser is conveyed to the superconductor to be cooled, and is returned to the condenser in a gaseous state. In order to convey the coolant to the superconductor to be cooled, pressure is applied to the coolant.
    Type: Application
    Filed: September 5, 2012
    Publication date: September 18, 2014
    Inventor: Markus Hösle
  • 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
  • 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: 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: 20130327500
    Abstract: A method of improving the efficiency in delivery of a cryogenic liquid (160) to the surface of a metal body in a furnace, the method comprising the steps of delivering a first liquid cryogen and a vaporized cryogen gas to a cooling coil (180) which is in heat transfer contact with a second liquid cryogen (140) at a lower temperature than the first liquid cryogen and a vaporized cryogen (160, 170), maintaining the first liquid cryogen and the vaporized cryogen gas in the cooling coil (180) for an amount of time sufficient to condense part of the vaporized cryogen gas to an additional amount of the first liquid cryogen, delivering the first liquid cryogen and the additional amount of first liquid cryogen to the surface of a metal body in a furnace (190, 150).
    Type: Application
    Filed: June 8, 2012
    Publication date: December 12, 2013
    Applicant: Air Liquide Industrial U.S. LP
    Inventors: Rozalia PAPP, David C. Braithwaite
  • Publication number: 20130298572
    Abstract: Energy efficiency and stability of LNG sendout operations in LNG terminals is increased by addition of a surge tank and booster pump downstream of a boil-off gas condenser to produce a subcooled condensate that is used to provide refrigeration to an LNG transfer line and that can be fed to the high-pressure LNG sendout pump without impacting the pressure of the main LNG sendout line, and/or without necessitating a pressure reduction device in the main LNG sendout line.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 14, 2013
    Applicant: Fluor Technologies Corporation
    Inventor: John Mak
  • Publication number: 20130174583
    Abstract: A method for maintaining a subcooled bottom state or the natural convection current of a liquefied natural gas in a storage vessel by the use of an external heat exchanger. The liquefied natural gas is removed from the storage vessel and cooled in the external heat exchanger by a cryogenic fluid such as liquid nitrogen. The cooled liquefied natural gas is reintroduced back into the storage vessel thereby maintaining a subcooled bottom layer or natural convection current in the storage vessel.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Inventor: Ron C. Lee
  • Publication number: 20130123110
    Abstract: A re-condensation device allows an NMR analysis device to be reduced in overall size and minimizes heat penetration into a liquid helium tank. An NMR analysis device provided with said re-condensation device. The re-condensation device includes: a second cooling member, part of which is inserted into a neck tube, and which re-condenses liquid helium; and a first cooling member, part of which is inserted into the neck tube. The second cooling member is thermally connected to a chiller's second cooling stage, and the first cooling member is thermally connected to the chiller's first cooling stage. The first cooling member has: a first insertion part, which has a diameter that allows insertion into the neck tube; and an inside contact part on the outer surface of the first insertion part and that cools heat seals by contacting, from the inside, a part of the neck tube that outside contact parts contact.
    Type: Application
    Filed: March 25, 2011
    Publication date: May 16, 2013
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Takashi Miki
  • 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
  • Publication number: 20120180502
    Abstract: Systems and methods to create and store a liquid phase mix of natural gas absorbed in light-hydrocarbon solvents under temperatures and pressures that facilitate improved volumetric ratios of the stored natural gas as compared to CNG and PLNG at the same temperatures and pressures of less than ?80° to about ?120° F. and about 300 psig to about 900 psig. Preferred solvents include ethane, propane and butane, and natural gas liquid (NGL) and liquid pressurized gas (LPG) solvents. Systems and methods for receiving raw production or semi-conditioned natural gas, conditioning the gas, producing a liquid phase mix of natural gas absorbed in a light-hydrocarbon solvent, and transporting the mix to a market where pipeline quality gas or fractionated products are delivered in a manner utilizing less energy than CNG, PLNG or LNG systems with better cargo-mass to containment-mass ratio for the natural gas component than CNG systems.
    Type: Application
    Filed: October 12, 2011
    Publication date: July 19, 2012
    Inventors: Ian Morris, Bruce Hall, Tolulope O. Okikiolu
  • Publication number: 20120060516
    Abstract: A fuel gas supply system of a vessel, such as an LNG carrier, is provided for supplying fuel gas to a high-pressure gas injection engine of an LNG carrier, wherein LNG is extracted from an LNG storage tank of the LNG carrier, compressed at a high pressure, gasified, and then supplied to the high-pressure gas injection engine. In one embodiment, the system includes a boil-off gas reliquefaction apparatus for reliquefying boil-off gas generated in the LNG tank.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 15, 2012
    Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Jung Han Lee, Dong Kyu Choi, Hyun Ki Park
  • Publication number: 20120055171
    Abstract: A fuel gas supply system of a vessel, such as an LNG carrier, is provided for supplying fuel gas to a high-pressure gas injection engine of an LNG carrier, wherein LNG is extracted from an LNG storage tank of the LNG carrier, compressed at a high pressure, gasified, and then supplied to the high-pressure gas injection engine. In one embodiment, the system includes a boil-off gas reliquefaction apparatus for reliquefying boil-off gas generated in the LNG tank.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 8, 2012
    Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: Jung Han Lee, Dong Kyu Choi, Hyun Ki Park
  • Publication number: 20120017608
    Abstract: Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.
    Type: Application
    Filed: October 3, 2011
    Publication date: January 26, 2012
    Applicant: DAEWOO SHIPBUILDING & MARINE ENGINEERING CO., LTD.
    Inventors: JUNG HAN LEE, JUNG HO CHOI, SUNG KON HAN, DONG KYU CHOI, YOUNG SIK MOON
  • 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: 20110271693
    Abstract: Systems and methods from removing heat generated by a heat sink of a magnetic resonance imaging (MRI) system are provided. One system includes a coldhead sleeve cooling arrangement for a coldhead of the MRI system. The coldhead sleeve cooling arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and a cooling system surrounding an outer surface of the coldhead sleeve. The cooling system uses helium gas to remove heat from the coldhead sleeve.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 10, 2011
    Inventors: Longzhi Jiang, Jalal Zia, John Scaturro, JR., William Einziger
  • Patent number: 8020407
    Abstract: A temperature-controlled vehicle including a cascade refrigeration system having a booster cooling line configured to supplement the cooling capacity of the cascade refrigeration system by expanding and venting a portion of a cryogenic refrigerant to the atmosphere during peak demands while the cascade refrigeration system continues to operate.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: September 20, 2011
    Assignee: Thermo King Corporation
    Inventor: Herman H. Viegas
  • Publication number: 20110160064
    Abstract: A cryogenic system includes a superconducting magnet (20) in a reservoir of liquid helium (LH). Helium vapor (VH) rises and contacts a recondenser surface (50, 50?, 50?) on which the helium vapor (VH) condenses into liquid helium and flows by gravity off a lower edge of the recondenser surface. A plurality of fins (52) extend from the recondenser surface or a plurality of grooves (52?, 52?) are cut into the recondenser surface to disrupt the film thickness and to provide a path by which droplets of the liquid helium leave the recondenser surface without travelling a full vertical length of the recondenser (30).
    Type: Application
    Filed: August 27, 2009
    Publication date: June 30, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Glen G. Pfleiderer, Robert A. Ackermann
  • Publication number: 20100146992
    Abstract: A vessel storing or transporting a low temperature fluid includes an insulating material disposed between an inner tank and an outer shell. The insulating material is volumetrically compressed so that it exerts a reaction force that is equal to or exceeds an ambient pressure at the outer shell and/or supports at least some of the weight of the inner tank. Manufacturing processes and methods of using the vessel also are described.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 17, 2010
    Inventor: Thomas M. Miller
  • 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
  • Publication number: 20090193816
    Abstract: The present invention provides a cryostat comprising a cryogen vessel (1), a thermal radiation shield (2), and a sleeve (5) for accommodating a cryogenic refrigerator. Also provided is a first thermal contact for thermally and mechanically connecting a first stage of a cryogenic refrigerator to the radiation shield for cooling thereof. A secondary recondensing chamber is provided (8) for accommodating a second stage of a cryogenic refrigerator, and means (10; 24) are provided for thermally connecting the secondary recondensing chamber to a recondensing surface (11a; 44) exposed to the interior of the cryogen vessel. The cryostat further comprises a pressure control arrangement (100) for controlling the pressure of a gas within the secondary recondensing chamber.
    Type: Application
    Filed: January 27, 2009
    Publication date: August 6, 2009
    Applicant: Siemens Magnet Technology Ltd.
    Inventors: Nicholas John Clayton, Neil Charles Tigwell, Stephen Paul Trowell
  • Patent number: 7568353
    Abstract: A method of storing biological samples in which the biological samples are stored in a stack within a vessel interior of an insulated vessel. A pool of liquid cryogen is maintained within the vessel interior by condensing cryogenic vapor boiled off of the pool of liquid cryogen with a cryocooler having a cold finger. The cryocooler and cold finger are positioned so that a cold heat exchanger of the cold finger is in thermal contact with the cryogenic vapor and is positioned above the stack, so as to also maintain a temperature difference within the insulated vessel, between a bottom region of the stack and a top region of the stack, of no greater than about 65K.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: August 4, 2009
    Assignee: Praxair Technology, Inc.
    Inventors: Bryce Mark Rampersad, John Henri Royal, Barry Alan Minbiole
  • Patent number: 7555916
    Abstract: Apparatus and methods for improving the safety and efficiency and decreasing the cost of producing liquid gas, such as liquid oxygen, with a small-scale use liquefaction device, according to various embodiments of the present invention. In one embodiment, liquid oxygen barrier may be added to interface between a cryocooler and a dewar to control rate of liquid oxygen escape upon a tipping of the dewar. A boiloff vessel in fluid communication with the dewar allows expanding gas from a tipped dewar to escape while allowing the liquid to safely settle in the boiloff vessel. A temperature sensing circuit, in proximity with a heat dissipator or cold finger of the cryocooler, is operable to break an electrical power circuit of the cryocooler or cooling fan when a sensed temperature exceeds a predetermined temperature. Oxygen purity of a feed stream of gas may be sensed and/or displayed.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: July 7, 2009
    Assignee: Respironics In-X, Inc.
    Inventors: Brian E. Dickerson, Steve W. Delve
  • Patent number: 7526923
    Abstract: A device for condensing volatile organic compounds (VOC) from a storage or transport tank (4) into oil from the same or another storage or transport tank (4) via a downcomer (6), where the upper part (8) of the downcomer (6), which upper part has a cross sectional area that is essentially unreduced, is connected to a gas pipe (14), the gas pipe (14) communicating with the upper part (16) of the storage or transport tank (4), and where the upper part (8) of the downcomer (6) is arranged at a sufficient height above the upper part (16) of the storage or transport tank (4) to cause an inflow of gas from the upper part (16) of the storage or transport tank (4) due to the underpressure created in the upper part (8) of the downcomer (6) when oil flows down through the downcomer (6).
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 5, 2009
    Assignee: Knutsen OAS Shipping AS
    Inventor: Per Lothe
  • Publication number: 20090071171
    Abstract: A cryogenic liquid storage system and method in which cryogenic liquid is stored within an active cryogenic liquid storage tank and one or more passive cryogenic liquid storage tanks. Headspace regions of the passive cryogenic liquid storage tanks are connected to the active cryogenic liquid storage tank and the active cryogenic liquid storage tank is refrigerated to collapse the headspace vapor within the active cryogenic liquid storage tank causing the flow of headspace vapor from the headspace regions of the passive cryogenic liquid storage tanks to the active cryogenic liquid storage tank. The increased head of liquid produces a pressure differential that drives liquid from the active cryogenic liquid storage tank back to the passive cryogenic liquid storage tanks.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Inventors: Jalal Hunain Zia, John Henri Royal, Kevin Roberts
  • Publication number: 20090038318
    Abstract: A superconducting system comprises a superconducting coil (3) mounted in a support (12). The coil is surrounded by a cryogen chamber (17) which is located radially outwardly from the coil (3) on the other side of the support (12). The cryogen chamber is in fluid communication with a cryogen recondensing unit (33) whereby vaporized cryogen may flow from the cryogen chamber (17) to the cryogen recondensing unit (33) to be recondensed in use before returning to the cryogen chamber. Thermally conductive means (25) is arranged to facilitate heat transfer from the superconducting coil (3) to the cryogen chamber (17) to vaporize cryogen contained therein in use and thereby remove heat from the coil. The thermally conductive means (25) is highly thermally conductive at cryogenic temperatures. In use, the highly thermally conductive means (25) facilitates transfer of heat from the coil (3) to the interior of the cryogen chamber (17) to vaporize cryogen located therein.
    Type: Application
    Filed: November 9, 2007
    Publication date: February 12, 2009
    Applicant: Telsa Engineering Ltd.
    Inventors: Michael Colin Begg, Frederick Thomas David Goldie