Abstract: A sea surface cooling system utilizing OTEC of the present invention comprises means for drawing surface seawater, deep seawater pumping means for pumping deep seawater through a draw pipe, evaporator means for heating and vaporizing working fluid with a low boiling point by said drawn surface seawater, mechanical power producing means for producing mechanical power by expansion force of said vaporized working fluid, condensation means for cooling said vaporized working fluid after said expansion by said pumped deep seawater to cause condensation, and means for circulating said condensed working fluid to said evaporator means. The system is characterized by including mechanical power transmission means for directly transmitting from said mechanical power producing means to said pumping means a mechanical power of variable ratio, without once converting said mechanical power into electric power.

Abstract: A system is provided for producing mechanical energy. The system may include a solar collector configured to receive solar energy and an external heater configured to provide secondary thermal energy. Furthermore, the system may include an engine disposed in communication with the solar collector and the external heater. To this end, the engine may be operable to receive the solar energy from the solar collector, receive the secondary thermal energy from the external heater, and convert the solar energy and the secondary thermal energy to mechanical energy. Additionally, the system may include a controller in communication with the solar collector, the engine, and the external heater. The controller may be configured to control an amount of solar energy and an amount of secondary thermal energy received by the engine.

Abstract: A heat engine includes a boiler, an injector for injecting working fluid into the boiler, a retainer for releasing the hydraulic fluid for movement away from a start position once working fluid vapour pressure in the boiler reaches a predetermined level, a returner for returning the hydraulic fluid to its start position following expansion of working fluid vapour in the boiler, resulting in reciprocating hydraulic fluid motion, and an exhaust valve to release expanded working fluid vapour from the boiler. The vapour pressure increase in the boiler causes a change of state from liquid to gas of a least a portion of the injected working fluid, followed by a substantially constant pressure heating of the working fluid, giving rise to a change of state from liquid to gas of substantially all of the remaining injected working fluid.

Abstract: The sun imparts 174 petawatt per second on the earth, and a large portion of this energy is absorbed by the earth's atmosphere in the form of translational energy for the gaseous molecules, i.e. continuous random motion in the average speed range of 500 meters per second on earth's surface. This invention utilizes a partition with large number of through-holes which all have the characteristic of providing greater cross section for gas molecules to transit from one side to the other than the reverse, thus creating a higher statistical probability for the molecules to move from one side of the partition to the other side.

Abstract: A system and method for generating power using air as the working medium. External air is compressed by an air compressor and heated by a heat exchanger and then used to cause rotation of an air turbine. The air is then mixed with fuel in a combustion chamber to allow for combustion. The resulting combustion gas is used by the heat exchanger to heat the incoming external air.

Abstract: The coolant in the cooling jacket of a dual cycle internal combustion steam engine is intentionally maintained at an elevated temperature that may typically range from about 225° F.-300° F. or more. A non-aqueous liquid coolant is used to cool the combustion chamber together with a provision for controlling the flow rate and residence time of the coolant within the cooling jacket to maintain the temperature of the coolant at a selected elevated temperature that is substantially above the boiling point of water but below the boiling point of the coolant. The coolant is passed from the jacket through a heat exchanger in a first circuit to transfer heat to a vaporizable working fluid such as water and is then returned. An optional second intrajacket perturbation circuit within the engine can be used to disrupt and disperse pockets of vapor that may tend to form before damaging hot spots can develop around the combustion chamber.

Abstract: An exhaust system for a double flow steam turbine providing a separate external exhaust path from an upper section of a turbine outlet of a first turbine section to a first condenser and a separate external exhaust path from a lower section the turbine outlet of the first turbine section to the first condenser. A separate external exhaust path from an upper section of a turbine outlet of a second turbine section and a separate external exhaust path from a lower section of the turbine outlet of the second turbine section is also provided.

Abstract: A method includes receiving fuel and air into a cup of a turbine fuel nozzle. The method also includes mixing the fuel and air at least partially within the cup. In addition, the method includes directing a fuel air mixture toward a turbine combustor. The method also includes shielding an inner wall of the cup with a blanket of a protective fluid flow to reduce the possibility of flame holding along the inner wall. The protective fluid flow excludes a combustible mixture of fuel and air.

Abstract: A gas stream with a reduced oxygen concentration relative to ambient air is used to vaporize a liquid fuel or liquefied higher hydrocarbon gas, or is mixed with a vaporized gas, and the reduced oxygen vaporized fuel gas is fed to a combustion device such as a premixed or diffusion combustor. Preferably, the oxygen content of the gas stream is less than the limiting oxygen index. By mixing the fuel with a gas stream that has an appropriately reduced oxygen content, auto-ignition prior to the desired flame location in the combustor can be avoided. In some embodiments, the reduced oxygen stream is generated from an air separator or taken from the exhaust of the combustion device.

Abstract: A burner incorporating a pilot cone and a mounting insert is provided. The pilot cone is constructed as a pilot cone assembly which is decoupled from the mounting insert. Further, an operating method for increasing the service life of a burner which incorporates a pilot cone assembly and a mounting insert is provided. The pilot cone assembly has a cone side and incorporates at least one further side where the further side is arranged to be essentially parallel to one of the sides of the mounting insert and spaced apart from it, so that between the further side and the side of the mounting insert there is a defined gap. In an operation of the burner, the gap is significantly reduced by the thermal expansion in at least at one point of contact between the further side and the side of the mounting insert. Finally, an assembly method is provided.

Abstract: An airblast fuel nozzle assembly (10) comprising a sleeve structure having a series of coaxial sleeves forming an inner-air circuit, an outer-air circuit, a main-fuel-feed circuit, and a pilot-fuel-feed circuit. The pilot-fuel-feed circuit includes a channel (44), and a discharge region (45) with exits (46). The exits (46) have a combined cross-sectional area that is substantially less than the cross-sectional area of the channel (44) upstream of the discharge region (45). In this manner, the pilot-fuel-feed circuit itself can provide a relatively large pressure drop across the channel region (44), and thereby assist in self atomization during ignition stages of engine operation.

Abstract: A system comprises a turbine combustor cap. The turbine combustor cap includes a plurality of segments. Each segment of the plurality of segments has edges abutting at least two fuel nozzle receptacles. Moreover, each segment of the plurality of segments does not completely surrounding any one fuel nozzle receptacle.

Abstract: A gas turbine includes a combustor liner having at least one hole formed therein. The gas turbine also includes a flow sleeve that at least partially surrounds the liner thereby forming a plenum between the flow sleeve and the liner, the plenum having an airflow therethrough, a portion of the airflow passing through the at least one hole in the liner and into the liner thereby reducing the mass of the airflow in the plenum. The flow sleeve has an axial profile that is reduced in cross section dimension at a predetermined axial location of the flow sleeve, thereby reducing a width of the plenum at the predetermined axial location. The reduction at the cross section dimension in the flow sleeve increases a velocity of the airflow in the plenum at the predetermined axial location, the increased velocity airflow increasing transfer of heat away from the liner.

Abstract: An auto-tune controller and tuning process implemented thereby for measuring and tuning the combustion dynamics and emissions of a GT engine, relative to predetermined upper limits, are provided. Initially, the tuning process includes monitoring the combustion dynamics of a plurality of combustors and emissions for a plurality of conditions. Upon determination that one or more of the conditions exceeds a predetermined upper limit, a fuel flow split to a fuel circuit on all of the combustors on the engine is adjusted by a predetermined amount. The control system continues to monitor the combustion dynamics and to recursively adjust the fuel flow split by the predetermined amount until the combustion dynamics and/or emissions are operating within a prescribed range of the GT engine.

Abstract: A method is provided for fuel injection in a sequential combustion system comprising a first combustion chamber and downstream thereof a second combustion chamber, in between which at least one vortex generator is located, as well as a premixing chamber having a longitudinal axis downstream of the vortex generator, and a fuel lance having a vertical portion and a horizontal portion, being located within said premixing chamber. The fuel injected is an MBtu-fuel. In said premixing chamber the fuel and a gas contained in an oxidizing stream coming from the first combustion chamber are premixed to a combustible mixture. The fuel is injected in such a way that the residence time of the fuel in the premixing chamber is reduced in comparison with a radial injection of the fuel from the horizontal portion of the fuel lance.

Abstract: A process for providing a fuel supplied to one or more combustors in a gas turbine engine system, comprising: reforming a fraction of the fuel in one or more fuel circuits of the gas turbine combustion system with a plasma reformer system to form at least one of hydrogen and higher order hydrocarbons to be supplied to the one or more combustors with a remaining fraction of the fuel; and controlling at least one of power and fuel flow to the plasma reformer system with an active feedback control system.

Abstract: A method for operating a power plant with in integrated gasification device is provided. A fossil fuel is gasified and is fed as syngas to a burner associated with a gas turbine for combustion purposes. Oxygen is separated from air by a membrane at a process temperature such that oxygen-depleted air is formed. The separated oxygen is fed to the gasification device in order to react with the fossil fuel, and heating energy is fed to the membrane to maintain the required process temperature. The heating energy is recovered in part from the syngas and in part from the oxygen and/or the oxygen-depleted air in heat exchange with the air, and the heated air is fed to the membrane.

Abstract: A method for producing electric energy from solid and liquid fuels is provided. The fuels are first subjected to a gasification process at high pressure, and the scrubbed gasification gas is fed to a gas and steam turbine process. The combustion of the scrubbed gasification gas in the gas turbine chamber does not occur with air, but with a mixture made of the three components oxygen, carbon dioxide and water vapor. As a result, the waste gas of the gas turbine is made only of carbon dioxide and water vapor. After the condensation thereof, technically pure carbon dioxide remains, which can be dissipated by storage in the deep substrate of the atmosphere.

Abstract: An anti-vortex device for use in a compressor rotor assembly of a gas turbine engine is described. Spaced-apart radial passageways extend from an axially extending passage provided in a central area of the device to an outer peripheral rim surface thereof. The radial passageways channel air from the primary gaspath about the rotor assembly to the axially extending passage where the air is directed into a central axial passage of the rotor assembly.

Abstract: A method of operating a membrane separation module is provided that includes the steps of directing a feed stream comprising a first component into the membrane separation module to separate the first component by permeating it across a membrane; and introducing a second component into the feed stream such that the second component has a higher permeability through said membrane than the permeability of the first component through said membrane.

Abstract: A process for producing a combustor structural member, the process comprising a plate-like assembly formation step of brazing a first plate-like member formed from a heat-resistant alloy, and a second plate-like member formed from a heat-resistant alloy and having a plurality of fins on the surface, with the second plate-like member positioned with the fins facing the first plate-like member, by interposing a brazing filler metal comprising a melting point lowering element between the two plate-like members, thereby forming a plate-like assembly, a press molding step of press molding the plate-like assembly to form a combustor structural member of the desired shape, a strain location identification step of identifying, in accordance with the shape of the combustor structural member, strain locations where the strain generated during the press molding step exceeds a predetermined value, a localized heating step of performing localized heating of the locations within the plate-like assembly corresponding with t

Abstract: The present invention provides a hula seal for use with a combustor. The hula seal includes a number of legs that define a number of slots. The slots may include a number of expansion slots.

Abstract: Several improvements to an aircraft turbine engine and Auxiliary Power Unit (APU) are disclosed, as well as methods of using these improvements in routine and emergency aircraft operations. The improvements comprise the addition of cockpit-controllable clutches that can be used to independently disconnect the engine's integrated drive generator (IDG), engine driven pump (EDP), fuel pump, and oil pump from the engine gearbox. These engine components may then be connected to air turbines by the use of additional clutches and then powered by the turbines. Similar arrangements are provided for the APU components. Cranking pads, attached to various engine and APU components, are disclosed to provide a means for externally powering the components for testing purposes and to assist with engine and APU start.

Abstract: A generator comprising at least one thermal stage having magnetocaloric elements (2) arranged around an axis and a magnetic arrangement (3) supported by a drive shaft (30) that rotates about the axis to subject the elements to a variation in magnetic field. The generator comprises pistons (70) to force heat transfer fluid through the elements with the pistons being driven in reciprocating translation within chambers (73) by at least one cam (71) that is rotationally driven the drive shaft (30). The generator comprises a forced circulation unit (8a) having planet gears (80) arranged around the central axis, supported by the body (72) of the generator and meshing with an inner crown gear (81) integral with the cam (71). Each gear (80) forms a gear pump that mixes the heat transfer fluid and places the fluid in forced circulation in the tanks (74) and the chambers (73).

Abstract: A pump for supplying a cryogenic liquid coolant in accordance with the present invention includes: a housing having an inlet port for introducing a cryogenic liquid coolant, an outlet port for discharging the cryogenic liquid coolant introduced through the inlet port, and a chamber for connecting the inlet port and the outlet port; an impeller rotatably retained in the housing for introducing the cryogenic liquid coolant through the inlet port and discharging the same through the outlet port; and a vapor exhausting part provided in the housing for exhausting vapor generated from the cryogenic liquid coolant.

Abstract: The present invention relates to a refrigerator unit and/or freezer unit having a first electronic controller which controls a second electronic controller. In accordance with the invention, the first electronic controller transmits control signals to the second electronic controller by the selective switching of one or more mains half cycles of a mains voltage. The present invention furthermore comprises a corresponding method for the operation of a refrigerator unit and/or freezer unit.

Abstract: The method and device according to the invention for the cooling of articles, in which the articles are introduced into at least one channel, through which a first stream of a first coolant flows, the channel being cooled by a second stream of a second coolant, is distinguished in that the first stream is fed from a first coolant conveyance unit and the second stream is fed from a second coolant conveyance unit. Advantageously, the second stream of the second coolant is a high-purity coolant stream which comprises, in particular, essentially pure liquid nitrogen. High purity is understood in this context to mean, in particular, that the second stream of the second coolant carries with it no articles or remains of articles or other impurities. The cooling conduit thereby remains clean and does not have to be cleaned in a complicated way.

Abstract: A Refrigerating circuit according to the invention comprises a compressor, a condenser/gas cooler, an expansion device (2), an evaporator (4), and refrigerant conduits circulating a refrigerant therethrough. The evaporator (4) comprises refrigerant piping comprising a plurality of substantially horizontal layers (8, 10) each layer comprising a plurality of pipes (8a-8h, 10a-10h) the pipes being substantially perpendicular to an air flow direction (12) from an air inlet region to an air outlet region of the evaporator (4). A pipe selected from the group of the second pipe (8b) to the last but one pipe (8g) in the bottom layer (8) forms the entry pipe (8c) of the evaporator (4). The entry pipe (8c) is connectable with the expansion device (2) to provide a refrigerating mode, and the entry pipe (8c) is connectable with a hot gas conduit (6) to provide a defrosting mode for the evaporator (4).

Abstract: Disclosed are a hybrid desiccant dehumidifying apparatus and a control method thereof which are employed under poor environment, such as a ship painting field. External air cooled by an evaporator is dehumidified and heated while passing through a desiccant dehumidifier and external air heated by condensation heat of a condenser is supplied to the desiccant dehumidifier as a regeneration air source such that high-temperature and high-humidity regeneration. A cooler is integrally formed with the desiccant dehumidifier so that the hybrid desiccant dehumidifying apparatus is manufactured in a compact size and the operating cost thereof is significantly reduced.

Abstract: The invention relates to the use of an adsorbent instead of a condenser in a heat pump/refrigerating machine as well as the use of said adsorbant during the reduction of the vapor pressure in a heat pump/refrigerating machine in order to improve the desorption capacity. The invention further relates to a refrigeration method in which preferably two different adsorbants are used in two stages.

Abstract: An automotive climate control system includes an evaporator, a variable speed compressor and a controller. The controller is configured to periodically alter a previous target evaporator temperature at a selected rate to generate a current target evaporator temperature, select a target compressor speed based on a difference between an actual evaporator temperature and the current target evaporator temperature, and command the compressor to operate at the target compressor speed.

Abstract: A refrigerating system according to the invention comprises a refrigerant circuit (2) having at least one compressor (4), a condenser/gascooler (6), an intermediate pressure container (8), at least one evaporator (10) and a respective expansion device (12) before said at least one evaporator (10), and refrigerant pipes (14) connecting said elements and circulating a refrigerant therethrough; a high pressure regulating device (16) between the condenser/gas-cooler (6) and the intermediate pressure container (8), expanding the refrigerant from a high pressure level to an intermediate pressure level; an intermediate pressure sensor sensing the intermediate pressure level; and a control unit (18) controlling the high pressure regulating device (16). The control unit (18) in operation limits the maximum refrigerant flow through the high pressure regulating device (16) to a maximum flow value FMax, if the sensed intermediate pressure level exceeds a predetermined threshold value PIntTh.

Abstract: In a self-contained plug-in display cabinet system (100), the evaporation temperature of the evaporator (25) is between ?4° C. and 2° C., and with the adaption of constant pre-cooling means (22), the high-temperature and high-pressure refrigerant gas discharged by the compressor (21) is pre-cooled allowing use of a low system pressure ratio and, thus, a high temperature compressor (21). Furthermore, there may be no need for the evaporator to be defrosted, which overcomes the drawbacks of the currently available display cabinet systems that the refrigeration cycles have to be interrupted for defrosting the evaporator, thereby having further energy saving and being advantageous in keeping the temperature of the food stable.

Abstract: An airflow-cooling apparatus of a ceiling air-conditioning circulation machine, and more particularly a structure permitting a smooth flow of the indoor air, wherein the drawn current of air passes through a cooling apparatus and then is guided indoors for reducing the temperature. Thus, the energy consumption and the carbon release can be reduced. According to the invention, a base frame includes a base frame having a rectangular positioning frame at the rim thereof. A plurality of radial supports are extended from the periphery of the positioning frame inwards. A circular frame is positioned at the center of the base frame. The rim of the circular frame is attached to the radial supports. A fan base is positioned within the circular hole of the circular frame and supported by a plurality of ribs. A plurality of conic and ring-shaped air outflow/inflow channels are concentrically and outwardly interposed between the circular frame and the positioning frame.

Abstract: A method of detecting loss of refrigerant within a cooling system of the type having a condenser, a refrigerant receiver in fluid communication with the condenser, a sensor configured to detect a level of refrigerant within the receiver, an evaporator in fluid communication with the receiver, and a pump or compressor in fluid communication with the evaporator and the condenser, includes establishing a baseline measurement of refrigerant mass contained in the receiver with the sensor during certain power loads applied to the cooling system, monitoring a mass of refrigerant in the receiver with the sensor at a certain power load applied to the cooling system, and identifying whether the monitored mass of refrigerant is less than the baseline measurement of refrigerant mass over a predetermined period of time. Systems for detecting loss of refrigerant are further disclosed.

Abstract: A controlled access pharmaceutical storage case has storage spaces arranged vertically one above the other and a pharmaceutical refrigerator located at its base. A remotely actuable refrigerator door lock on the refrigerator door has a data port connecting with a programmed electronic control arrangement, e.g., a computer or network. The refrigerator has a compressor at the top of the case that operates on line AC or on battery DC backup power. A battery backup arrangement is located at the top of the case. When AC is detected to be absent or insufficient, i.e., during general or localized power failure, the refrigerator operates on battery, and the door lock is prevented from unlocking. Internal temperature and humidity levels are tracked and sent at intervals to a predetermined destination for action.

Abstract: The cooling system supplements the cooling of a walk-in cooler by injecting outside cold air via an outside air intake. The system includes air intake ductwork adapted to vent cold outside air into the walk-in cooler and air return ductwork that circulates the air to provide cross-flow of the injected cold air. Inline fans are connected to an interior thermostat. Motorized dampers are connected to a thermostat with an exterior temperature probe. The system thermostats are set slightly cooler than any pre-existing thermostat operating the pre-existing refrigeration system.

Abstract: The present invention relates to a fibre assembly comprising high-performance polymeric fibres and bonding fibres, the fibre assembly comprising at least 70% by weight of high-performance polymeric fibres and at most 30% by weight of bonding fibres, the fibre assembly having a layered arrangement of the fibres and at least some of the fibres being bonded together by points of contact obtainable by softening of the bonding fibres. The present invention further describes an insulation system comprising a fibre assembly of the invention.

Abstract: In a container 1 with an end wall 5, an air treatment system 6 that is arranged in the end wall 5 and comprises an opening 14 on its bottom side, through which it emits an air flow, a floor 2 provided with channels guiding the air flow in a direction away from the end wall 5, and an air guide 15 forming, in an operation position, together with a part of the end wall 5 and a part of the floor 2 an air channel 16 that guides the air flow between the opening 14 and the channels in the floor, it is endeavoured to prevent the air guide from being damaged by the forks of a fork lift truck. This is achieved in that the container 1 comprises a spring arrangement that counteracts a movement of the air guide 15 in the direction of the end wall 5.

Abstract: The invention provides a refrigerant distribution device for refrigeration system which is capable of improving heat exchange efficiency, comprising: an entering duct, a bottom cover plate, a core, a hollow cylinder, an upper cover plate and multi-branch ducts. The core is disposed in the space formed by the bottom cover plate, the cylinder and the upper cover plate, wherein a plurality of openings are distributed on the core. The refrigerant distribution device according to the invention is capable of realizing uniform distribution and allocation of refrigerant in refrigeration system, and improving heat exchange efficiency of the refrigeration system.

Abstract: A refrigerating apparatus including a first refrigeration cycle circuit having a first compressor, a first radiator, a supercooler, a first pressure-reducing device and an evaporator that are connected through a refrigerant pipe, a second refrigeration cycle circuit having a second compressor, a second radiator, a second pressure-reducing device and the supercooler that are connected through a refrigerant pipe, a refrigeration unit in which the first compressor and the first radiator are mounted, a showcase in which the first pressure-reducing device and the evaporator are mounted, a supercooling hot water supply device in which the second compressor, the second radiator, the second pressure-reducing device and the supercooler are mounted, and a hot-water stock device having a hot water supply tank that is connected to the second radiator of the supercooling hot water supply device through a second radiator.

Abstract: A cabinet-like domestic appliance having a carcass and a door to enclose an interior, and a telescopic pull-out assembly installed in the interior, wherein the telescopic pull-out assembly has at least one rail that is movable in a depthwise direction of the interior. The rail bears a lug that is made of ferromagnetic material and that faces toward a rear wall of the interior. A magnet is mounted on the rear wall of the interior, wherein, in a retracted stop position of the telescopic pull-out assembly, the lug is subjected to the attractive magnetic force of the magnet.

Abstract: A refrigerator having an intermediate storage compartment, which has an improved structure of a return flow passage to return cold air from the intermediate storage compartment. The refrigerator includes a first evaporator to supply cold air to an upper storage compartment, a second evaporator to supply cold air to a lower storage compartment, a cold air supply duct to supply cold air generated at the second evaporator to an intermediate storage compartment, and a curved section formed at a top of the intermediate storage compartment to uniformly distribute the cold air supplied via the cold air supply duct in the intermediate storage compartment. The refrigerator also includes a cold air return duct to return cold air from the intermediate storage compartment, and an ice-making cold air return duct to return cold air from an ice maker. The cold air return duct is joined with the ice-making cold air return duct.

Abstract: An adjustment foot unit of a domestic appliance, in particular an adjustment foot unit of a refrigerator unit and/or freezer unit, has a vertical adjustment device having a rotatable rod and a spindle rotatably supported in a housing and having a thread at least sectionally, with the rod and the spindle being connected to one another such that a rotation of the rod results in a rotation of the spindle, having an adjustment unit, in particular a nut, which is arranged rotationally fixedly and has a thread which is in engagement with the thread of the spindle as well as having a foot part displaceable relative to the housing, with the foot part and/or the adjustment unit having a sloped plane in which the adjustment unit is in contact with the foot part.

Abstract: An oil separator for an air conditioner, which includes: a case having a cylinder portion, and a lid portion and a bottom portion respectively closing an upper side opening end and a lower side opening end of the cylinder portion; an inlet pipe which is connectable to a discharging outlet of a compressor and which penetrates the lid portion so that an end of the inlet pipe is located inside the case; an outlet pipe which is connectable to a condenser and which penetrates the lid portion so that an end portion of the outlet pipe is located inside the case and protrudes into the cylinder portion toward the bottom portion; and a mesh portion which is provided to the end of the inlet pipe.

Abstract: An air conditioning system for use in a hybrid-electric vehicle having an engine and a cabin. The system includes a refrigerant loop and a coolant loop. A phase change heat exchanger including a first tube in fluid communication with the refrigerant loop and a second tube in fluid communication with the coolant loop. The first and second tubes abut one another for conducting heat from the coolant in the coolant loop to the first refrigerant in the refrigerant loop when the vehicle is operating with the engine running. The phase change heat exchanger further includes a chamber abutting the first and second tubes for storing a phase change material. The phase change material conducts heat to the first refrigerant to freeze the phase change material when the vehicle is operating with the engine running and receives heat from the coolant to cool the coolant when the engine is not running.

Abstract: An air-conditioning apparatus uses carbon dioxide as a refrigerant, and includes comprises a two-stage-compression-type compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, and an intercooler. The intercooler uses air as a heat source. The intercooler is configured and arranged to cool refrigerant flowing through an intermediate refrigerant tube that draws refrigerant discharged from the first-stage compression element into the second-stage compression element. The intercooler is integrated with the heat source-side heat exchanger to form an integrated heat exchanger, with the intercooler disposed in an upper part of the integrated heat exchanger.

Abstract: A hermetic compressor includes an airtight container containing lubricating oil and having a compression element and a motor element. The compression element compresses a refrigerant by being driven by the motor element. The compression element includes a crankshaft extending in a vertical direction and having a main shaft and an eccentric part; a block forming a compression space; a piston having a cylindrical shape and reciprocating in the compression space; and a connecting rod for transmitting the rotation of the eccentric part to the piston. The piston has its center of gravity on either the upper side or the lower side in the vertical direction with respect to a plane which passes through the central axis of the piston and is perpendicular to the crankshaft.

Abstract: Liquid separator (2), designed as a U-shaped pipe (5) and arranged essentially horizontally, for a plate heat exchanger evaporator (1) system for separation of liquid droplets from vapour transported from the evaporator to the separator.

Abstract: A cryogenic turbine expander system which consists essentially of a cryogenic liquid pressure vessel, and the vessel further accommodating a turbine expander, an internal bypass configuration, which are operable in parallel, a three-way valve to direct incoming high pressure liquefied gas flow to the turbine expander, or the internal bypass configuration, which further consists a Joule-Thomson valve, when the turbine expander is not operational.