Abstract: According to an embodiment of the present invention, a cryogenic fluid delivery system includes a vessel containing a cryogenic fluid at a first pressure and a first temperature, a first heat exchanger coupled to the vessel for receiving the cryogenic fluid and cooling the cryogenic fluid to a second temperature, a first pump coupled to the first heat exchanger for pressurizing the cryogenic fluid to a second pressure, a second pump for pressurizing the cryogenic fluid to a third pressure, a second heat exchanger coupled to the second pump for cooling the cryogenic fluid to a third temperature, and a nozzle coupled to the second heat exchanger for delivering a jet of the cryogenic fluid toward a target.

Abstract: The present invention concerns a device for generating a thermal flux with a magneto-caloric material, which is non-polluting, effective, reliable, of simple design and simple to use, economical, compact, and can be used both in large-scale industrial installations and for domestic applications. The device (3) for generating thermal flux with a magneto-caloric material comprises two thermal flux generation units (30) arranged side by side and each provided with thermal bodies (31) containing a magneto-caloric element and arranged in line along two rows carried by rectilinear frames (306). The thermal bodies (31) are subjected in alternation to magnetic fields emitted by magnetic mechanism (303) in the shape of a U, positioned in a staggered arrangement on either side of two bars (304) which move in reciprocating rectilinear translation. The thermal bodies (31) have a through-channel containing a heat transfer fluid and connected to one or more heat transfer fluid circuits.

Abstract: The invention has an object to provide a regenerator and cryogenics pump using a regenerator material which fulfills such requirements as specific heat, thermal conductivity, manufacturing easiness, strength, hardness, chemical stabilization and low cost instead of Pb which is environmentally harmful. In a regenerator 14 which contains regenerator material 16 in an internal path for refrigerant, and in which heat is exchanged between the helium gas as refrigerant, and regenerator material, regenerator material 16 is any one of Sn, Bi—Sn alloy and Ag—Sn alloy. The regenerator material 16 is spherical. Plural spheres are packed in the internal path of the regenerator 14.

Abstract: A refrigerator is provided in which a communication pad is installed in one of the doors to open and close storage spaces formed in a refrigerator main body. The communication pad is detachably installed in a seating space of the door. While an upper end of the communication pad is seated in the seating space by an upper clamp, a lower end of the communication pad is seated in the seating space by a lower clamp. The upper clamp and the lower clamp are installed in the seating space through hinge assemblies. The hinge assemblies are configured so that the upper and lower clamps rotate only by a force of a predetermined value or higher. With such structure, die communication pad may be securely mounted to and easily dismounted from the door.

Abstract: A cryogenic air separation system wherein nitrogen vapor from a higher pressure column and oxygen liquid from a lower pressure column each pass down through a once-through main condenser in heat exchange relation and some but not all of the oxygen liquid is vaporized such that the oxygen liquid and vapor exit the condenser in a liquid to vapor mass flowrate ratio within the range of from 0.05 to 0.5 whereby the need for a recirculation pump to ensure avoidance of oxygen boiling to dryness is eliminated.

Abstract: Natural gas liquefaction system employing an open methane cycle wherein the liquefied natural gas is flashed immediately upstream of the liquefied natural gas storage tank and boil off vapors from the tank are returned to the open methane cycle.

Abstract: A system and method for vaporizing a cryogenically stored fuel, particularly hydrogen, liquefied by cooling below the ambient temperature is provided. A system for vaporizing a cryogenically stored fuel uses heat arising in the area of a fuel consumer, and includes: a withdrawing line device for drawing fuel out of a tank device; a vaporizer device for vaporizing the fuel drawn via the withdrawing line, while introducing the vaporization heat; a gas line device for feeding the vaporized fuel to each consumer; a heat transfer system provided in the vicinity of the consumer while serving to absorb heat arising in the vicinity of the consumer, and; a fuel/heat exchanger device, through which a heat transfer fluid flows and which forms a part of the vaporizer device, for providing the vaporization heat via a heat flux drawn out of the heat transfer system.

Abstract: A cooling apparatus comprises a pulse tube refrigerator (A) having a pressure source (1), a cold reservoir (6), a condenser (7), a pulse tube (9), a radiator (10), and a phase adjuster (12); and a low-temperature container having a liquid reservoir (21) fixed to a vacuum tank (31) through heat-insulating support members (36) and (37). The condenser (7) is fixed to a cold end (6b) of the cold reservoir (6), and is disposed in a gas phase portion (21a) of the liquid reservoir (21). A hot end of the pulse tube (9) is fixed to the vacuum tank (31) and is disposed in such a manner that a cold end (9b) of the pulse tube (9) is located lower than the hot end and is located in a liquid phase portion (21b) of the liquid reservoir (21). The cold end (9b) of the pulse tube (9) is disposed outside the liquid reservoir (21) but within the vacuum tank (31), and the cold end (9b) of the pulse tube (9) and the condenser (7) communicate with each other through piping (8).

Abstract: A process of liquefying a gaseous, methane-rich feed to a liquefied product is provided that includes adjusting the composition and the amount of refrigerant and controlling the liquefaction process using an advanced process controller based on model predictive control to determine simultaneous control actions for a set of manipulated variables.

Abstract: Method and device for separating gases and/or liquids in a vertical column (1). The top product (4) of the column (1) is cooled and partly recycled. The bottom product (3) of the column (1) is heated and partly recycled. Cooling and heating take place with the aid of a thermoacoustic heat pump (10), which can be driven by external heating (2). A relatively large temperature difference between top product and bottom product can be overcome by this means.

Abstract: The invention relates to a superconductive device containing a rotor that can be rotated about an axis of rotation and that comprises a superconductive winding in a winding support. Said winding support has a central cavity, into which two fixed thermal tubes project axially. One of said tubes forms a cooling finger that is closed at the end and contains a second coolant with a higher condensation temperature. The other tube supplies a first cooling with a lower condensation temperature to the central cavity and evacuates said coolant from the cavity. To condense the coolants, the tubes lead to a refrigeration unit, situated outside the rotor and equipped with a refrigeration head and a condenser device.

Abstract: Multi-stage vacuum distilling, cooling, and freezing processes for solution separation and seawater desalination are implemented through multi-stage vacuum distilling, cooling, and freezing systems. The systems are set to their initial state for implementing constant temperature distilling process, drain-to-vacuum and freezing process, transferring of a specific solution, and recycling of a hot circulating solution, so as to separate the specific solution. In the multi-stage cooling process, vacuum evaporation cooling is utilized to cool the solution in order to supply the low-temperature solution needed in the multi-stage vacuum freezing process. Vapors produced in the multi-stage vacuum distilling and cooling systems provide condensation heat needed to melt ice crystals produced in the multi-stage vacuum freezing system.

Abstract: The inert gas generating system includes a compressed air source, a cooling air source, and a separation module. The separation module includes first and second inlets and outlets. The first inlet is coupled to the compressed air source. The first outlet is coupled to the first inlet via a bundle of hollow fiber membranes. The second inlet is coupled to the cooling air source, and the second outlet is coupled to the second inlet via a space surrounding the bundle of hollow fiber membranes.

Abstract: The pulse tubes (165, 175) and regenerators (160, 170) contained within a cryopump housing (210) are arranged in a way that facilitates the fabrication and installation of the cryopanels (265). The pulse tubes and regenerators are located in a common plane in the center of the cryopump housing and the cold (second stage) panels (265) that are pitched parallel to the plane with the tubes.

Abstract: A refrigerator in which a machine room and an air cooling chamber having an evaporator, are placed at a top of a cabinet to maximize the storage capacity of lower sections of storage compartments. The refrigerator includes a cabinet defining a storage compartment therein. A top projection part is formed by projecting a rear portion of a top of the cabinet upward. The top projection part defines the air cooling chamber therein, such that the air cooling chamber extends upward from an upper portion of the storage compartment. The machine room is defined on the top of the cabinet at a position in front of the top projection part, and receives a compressor and a condenser therein.

Abstract: A cooling load 90 is enclosed within the envelope of the pressure vessel that contains the working fluid in a pulse tube cooler in a load space 95 adjacent to a regenerator 58 of that pulse tube cooler. Flow-smoothing means 63, which include stacked screens and perforated plates, or diffuser nozzle 104 or diffuser cone 106, spreads the flow of fluid that enters the cold end of pulse tube 66.

Abstract: A process for the extraction and recovery of ethane and heavier hydrocarbons (C2+) from LNG. The process covered by this patent maximizes the utilization of the beneficial cryogenic thermal properties of the LNG to extract and recover C2+ form the LNG using a unique arrangement of heat exchange equipment, a cryogenic fractionation column and processing parameters that essentially eliminates (or greatly reduces) the need for gas compression equipment minimizing capital cost, fuel consumption and electrical power requirements.

Abstract: The invention relates to a method and an installation for cooling bulk products, especially pellets or feed cubes. In order to accelerate possible product replacement, the formed pellets are cooled in two steps, a precooler (3) directly following the forming device (2). A secondary cooling process is only carried out after sifting or breaking and sifting.

Abstract: Liquid nitrogen is filled in a low temperature vessel; an ejector that sucks liquid nitrogen by blowing a cooling agent (liquid or gas) such as low temperature helium gas or liquid helium of pressure higher than in the space within the vessel is disposed in the vessel; the liquid nitrogen blown with the cooling agent is cooled by the cooling agent to become fine particles of solid nitrogen which fall down; and gas in a space of the vessel is discharged out of the vessel so as to maintain the pressure of the space higher than the atmospheric pressure. A gaseous phase of liquid nitrogen in an adiabatic vessel is depressurized to vaporize nitrogen in a liquid phase so that a temperature of the nitrogen is reached to the triple point of nitrogen by lowering temperature thereby and solid nitrogen is produced by keeping at the triple point, and that the produced solid nitrogen is transformed into slush by stirring the content of the adiabatic vessel.

Abstract: Method for gas liquefaction comprising cooling a feed gas by a first refrigeration system in a first heat exchange zone and withdrawing a substantially liquefied stream therefrom, further cooling the substantially liquefied stream by indirect heat exchange with one or more work-expanded refrigerant streams in a second heat exchange zone, and withdrawing therefrom a further cooled, substantially liquefied stream. At least one of the one or more work-expanded refrigerant streams is provided by compressing one or more refrigerant gases to provide a compressed refrigerant stream, cooling all or a portion of the compressed refrigerant stream in a third heat exchange zone to provide a cooled, compressed refrigerant stream, and work expanding the cooled, compressed refrigerant stream to provide one of the one or more work-expanded refrigerant streams.