Abstract: An assembly for delivering a supply of liquid fuel and a supply of purge air to a gas turbine engine, the assembly comprising: an annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, the annular dual-flow check valve comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring activated annular poppet that resides in the outer channel and has a range of motion in the axial direction; and an opening through the inner body that connects the outer channel to the inner channel; wherein the axial movement of the annular poppet is regulated by the pressure of the flow upstream of the annular poppet in the outer channel; and the axial range of motion of the annular poppet includes at least two axial positions.

Abstract: A fuel supply system has valve communicating fuel to fuel nozzles. A fuel manifold supplies fuel to the valve. The valves are controlled by rotary drives extending from an actuator. At least part of the drive lies within the fuel manifold which serves to keep the drive cool and reduce significantly the number of seals required.

Abstract: The invention is related to a gas turbine pre-mix combustion system comprising: at least one combustor with a combustor wall partly surrounding a combustion zone; at least one mixing duct including an air passage leading to an outlet opening being open towards the combustion zone; and one or more fuel injection openings leading into the air passage and connecting it to one or more fuel supply passages so as to allow the injection of fuel into air flowing through the air passage. The locations of at least two outlet openings or at least two sections of a single outlet opening and the orientation of downstream sections of the respective air passages or air passage are chosen such that fuel/air mixtures flowing out of the outlet openings or said sections of a single outlet opening show opposed flow paths so as to impinge on each other in the combustion zone.

Abstract: The primary nozzles of a Dry Low NOx (DLN) combustor are configured to alternatively burn a first gas fuel or a second gas fuel, where the two gas fuels may have widely disparate energy content. Natural gas may be the first gas fuel and syngas may be the second gas fuel. An inner fuel circuit and an outer fuel circuit are provided to allow effective control of fuel/air mixing profiles, dynamics, primary pre-ignition and emission control by changing the fuel split between the two fuel circuits. The inner fuel circuit may be run in a diffusion combustion mode on many gas fuels.

Abstract: A combustor for a turbine engine includes an outer liner having a first group of air admission holes and defining a plurality of outer liner regions. The combustor further includes an inner liner circumscribed by the outer liner and forming a combustion chamber therebetween, the inner liner having a second group of air admission holes and defining a plurality of inner liner regions. The combustor further includes a plurality of fuel injectors extending into the combustion chamber and configured to deliver an air-fuel mixture to the combustion chamber, each of the plurality of fuel injectors being associated with one of the outer liner regions and one of the inner liner regions. The first group within a respective outer liner region includes air admission holes that circumferentially alternate between approximately a first size and approximately a second size, the first size being different than the second size.

Abstract: A combustor swirl cup includes coaxial inner and outer swirlers separated by a tubular centerbody. The centerbody includes a bypass inlet surrounding the inner swirler and diverges aft along a perforate inner nozzle to terminate at an annular flameholder. An impingement ring is spaced forward from the flameholder in flow communication with the bypass inlet for receiving cooling air therefrom to impingement cool the flameholder.

Abstract: A fuel nozzle for a gas turbine engine is provided having swirlers and a mounting device configured to mount the fuel nozzle to the inside of a combustor. In one embodiment the combustor has an interior surface formed to receive the mounting device of the fuel nozzle from within the combustor. The swirlers can be integrally formed in the fuel nozzle or can be separately attached, thus allowing the fuel nozzle to be mounted within the combustor having the relative placement of the swirlers already determined prior to installation. The fuel nozzle tip can be positioned a predetermined distance from the outlet of a swirler to reduce NOx emissions.

Abstract: A method and system for enhancing the heat transfer of turbine engine components is disclosed that includes applying a metallic coating having a high thermal conductivity to the cold side of a turbine component to enhance heat transfer away from the component. The metallic coating may be roughened to improve heat transfer. The metal coating may be a Ni—Al bond coating having an aluminum content greater than about 50 weight percent.

Abstract: The present invention relates to combustors, and provides a combustion liner that may at least partially contain a combustion process. The combustion liner may include a support structure that supports a plurality of panels. The panels may be in the form of thermal barrier panels, e.g., that are attached to the support structure and/or other parts of the machine.

Abstract: One embodiment of the present application includes a hot section component of a gas turbine engine having a covering. The covering includes a protrusion and is attached to the hot section component though a flexible retainer. In one form the covering is made from ceramic matrix composite. The flexible retainer has a closed position and an open position. The retainer secures the protrusion to the hot section component when it engages part of the protrusion when in the closed position.

Abstract: One embodiment according to the present invention is a unique system for gas turbine engine control. Other embodiments include unique apparatuses, systems, devices, and methods relating to gas turbine engines. Further embodiments, forms, objects, features, advantages, aspects, and benefits of the present invention shall become apparent from the following description and drawings.

Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.

Abstract: A gas turbine engine is provided having a variety of forms and features. The gas turbine engine can include a compressor having movable vanes. In one form of operation the compressor can close down the vanes to a relatively low flow capacity position and the compressor can be operated at a higher speed, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can include a turbine having movable vanes. In one form of operation the turbine can change the vane positions to a relatively low torque position and the engine operated at a higher fuel flow condition, whereupon the vanes can be repositioned and the gas turbine engine operated at a different condition. The gas turbine engine can have a heater that adds heat to a flow stream, a motor that provides energy to a shaft, and an external load.

Abstract: An external steam turbine main steam startup control valve bypass loop is provided to facilitate a full pressure combined cycle rapid response/fast start powerplant. The main steam startup bypass control loop particularly includes a main steam startup bypass control valve, which allows for the implementation of high efficiency, low pressure drop main steam control valve that otherwise would not be able to handle the severe throttling duty during a full pressure steam turbine startup and enhances the controllability of the steam turbine allowing for the high fidelity controls necessary to minimize steam turbine rotor stresses.

Abstract: Aspects of the invention relate to a system and method for actively managing blade tip clearances in a turbine engine, particularly under start up and steady state operating conditions. During start up, the rotor can be cooled while the blade ring can be heated. During steady state operation, the rotor may be heated while the blade ring may be cooled. The sources of the heating fluid and cooling fluid can be compressor delivery air, boiler steam and ambient air. The fluids can be compressed to maintain efficiency.

Abstract: A gas turbine engine is provided that includes a gearbox operable to selectively couple a relatively high pressure spool shaft to a relatively low pressure spool shaft. In one form the gearbox includes a cone clutch that engages a male member of the cone clutch to a female member of the cone clutch during an engine start of the gas turbine engine. A relatively high pressure of a working fluid can be used to bring the male member and the female member together. A spring can also be used to urge the male member and the female member apart when the working fluid is at a relatively low pressure.

Abstract: Embodiments of methods and systems for controlling a combustor for a gas turbine engine are provided. According to one example embodiment, a system includes an air control assembly associated with at least one air path of a combustor for a gas turbine engine. Additionally, the system also includes at least one sensor for sensing at least one operating parameter of the gas turbine engine. Further, the system also includes a controller operable to receive at least one operating parameter sensed by the at least one sensor, and further operable to selectively control an air control assembly based at least in part on the at least one operating parameter sensed by the at least one sensor.

Abstract: A gas turbine engine adapter is provided. In one form the adapter is segmented and may be attached to a gas turbine engine support ring. The adapter can provide a channel that may receive part of a gas turbine engine component such as, but not limited to, a plug nozzle. The adapter can include a load bearing support to counteract axial forces experienced by the plug nozzle during operation of the gas turbine engine. A compressible seal can be provided between the plug nozzle and the adapter. A leaf seal can also be provided to seal between segments of the adapter. The plug nozzle can be discouraged from rotating relative to the adapter.

Abstract: A system for moving an auxiliary component of a gas turbine engine is disclosed. The system may have a mobile support platform configured to support the auxiliary component during operation of the gas turbine engine. The system may further have at least one guide assembly operably connected to the mobile support platform and configured to guide movement of the mobile support platform. The system may also have a drive assembly operably connected to the mobile support platform and configured to impart movement of the mobile support platform between an elevated position and a lowered position.

Abstract: An apparatus and process for reducing temperature of food products on a conveyor disposed within a chamber including transporting the food products on the conveyor moving in a direction within the chamber; introducing a mixture of a gas and solid or liquid cryogen into the chamber; and pulsing a turbulent flow of the mixture of gas and solid or liquid cryogen alternately back and forth across the conveyor in a direction transverse or perpendicular to the direction of movement of the conveyor.

Abstract: A thermoelectric nanowire array with a low heat leakage and a manufacturing method thereof are described. Nanowire array units separated from each other are formed on a substrate, and an air wall is formed at a region on the substrate free of the nanowire array units. Or, a polymeric material having a low thermal conductivity is combined with a template material so as to form a composite template structure for nanowires to deposit therein. With the design of the air wall or the composite template structure, the thermal reflow phenomenon of the thermoelectric nanowire array is avoided, thereby greatly improving a thermal dissipation efficiency of the thermoelectric nanowire array.

Abstract: A refrigeration process including supplying chilled CO2 liquid into a refrigeration chamber, flashing the chilled CO2 liquid into gaseous CO2 and solid CO2 for providing a cooling elect within the refrigeration chamber, and exhausting CO2 gas from the refrigeration chamber, wherein fresh CO2 liquid passes through a tube-side of a shell-and-tube heat exchanger prior to entering the refrigeration chamber as chilled CO2 liquid and the exhaust CO2 gas passes through a shell-side of the shell-and-tube heat exchanger after exiting the refrigeration chamber, thereby pre-cooling the liquid CO2 prior to entering the refrigeration chamber.

Abstract: A siphon for delivery of a liquid cryogen from a container such as a Dewar flask. The siphon ensures delivery of a liquid cryogen with a lower proportion of the gaseous fraction. The siphon comprises a central feeding conduit, which is largely contained within the Dewar flask. There is an auxiliary conduit surrounding the central feeding conduit; the outer upper section of this auxiliary conduit is provided with an adjustable valve intended to release a gaseous fraction of the cryogen contained in the annular gap between the auxiliary and central feeding conduits. The upper section of the central feeding conduit is provided with an external layer of a porous capillary coating or with a wick; this ensures that the upper section of the central feeding conduit is continuously wetted with the liquid cryogen. This porous capillary coating prevents gasification of the liquid cryogen in the central feeding conduit.

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.

Abstract: An apparatus for reducing temperature of items includes an enclosure having an inlet and an outlet for the items within the enclosure; a conveyor for conveying the items within the enclosure from the inlet to the outlet; one or more delivery nozzles positioned to deliver gaseous cryogen and liquid or solid cryogen at supersonic velocity to the items on the conveyor. The apparatus delivers supersonic gaseous cryogen and fine liquid cryogen droplets onto the surface of food items to cool or freeze the food items.

Abstract: A linear compressor including a piston housing, a compressor piston movable in a reciprocating manner along an axis within the piston housing, a drive mechanism for driving the reciprocating movement, a linkage for connecting the compressor piston to the drive mechanism, and a helical spring operable within the linkage.

Abstract: A self-chilling container, including an outer wall and an inner wall defining at least one adsorption chamber in a space provided between the outer wall and the inner wall, the adsorption chamber adapted to contain adsorbent material in heat transfer contact with at least the inner wall; the inner wall further defining at least one cooling chamber adjacent to the adsorption chamber, the cooling chamber being in heat transfer contact with the inner wall; at least one inlet disposed at the outer wall for introduction of a gas subliming solid material into the adsorption chamber for adsorption of sublimed gas onto the adsorbent material; and a valve in communication with the adsorption chamber for controlled release of the gas from the adsorption chamber.

Abstract: Disclosed is a method and device to efficiently regulate flow of refrigerant while maintaining a sealed chamber in systems providing stored thermal energy for use during peak electrical demand. A mixed-phase regulator replaces the thermostatic expansion valve used in conventional air-conditioning systems that, along with capillary tubes and orifices, regulates the refrigerant fed from the compressor to the heat load.

Abstract: An apparatus and method for the presentation of organic samples at low temperature and under vacuum for analysis using a surface analysis technique is described. The apparatus carries a sample trapped between two hinged plates which is subsequently cryogenically-cooled and then inserted into a vacuum system where it locates on a cold stage. The device has a mechanism which is used to fracture the sample whilst under vacuum and open the two halves of the sample ready for analysis. It thus provides a reliable automated method of freeze-fracture, replacing current unreliable manual methods.

Abstract: A moisture recirculation system for evaporatively cooling air, the system including a moisture distribution arrangement which, in use, distributes moisture to an upper portion of moisture absorbent material; a trough disposed below the lower most portion of the moisture absorbent material for initially collecting moisture run-off; a sump in fluid communication with the trough for collecting and storing said run-off; and a pump in fluid communication with the sump which, in use, transfers moisture from the sump to the moisture absorbent material.

Abstract: A method of drying a fluid comprising a fluoropropene, which method comprises the step of contacting the fluid with a desiccant comprising molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. A heat transfer device comprising a heat transfer fluid comprising a fluoropropene, and a desiccant comprising a molecular sieve having openings which have a size across their largest dimension of from about 3 ? to about 5 ?. Preferably, the fluoropropene is R134yf or R-1225ye.

Abstract: A chiller including a condenser having a refrigerant-storage vessel in fluid communication with a multichannel heat exchanger is disclosed. The chiller further includes a compressor, an evaporator and an expansion device connected in a refrigerant circuit. The refrigerant-storage vessel provides system volume for pump down operations.

Abstract: Refrigerating device formed by a main compressor (190), a condenser (140) downstream of and in fluid communication with the main compressor (190), main expansion means (170) downstream of the condenser (140) and an evaporator (180) downstream of and in fluid communication with the main expansion means (170), which also comprises a turbocompressor unit (160) in fluid communication between the evaporator (180) and the main compressor (190) and a heat exchanger (150, 152) having a hot branch (150c) connected upstream, via an inlet line (145), to the condenser (140) and downstream, via an outlet line (149), to the main expansion means (170) and a cold branch (15Of) connected, upstream, to an expansion means (142, 144) mounted on a branch (146) of the line (145) and, downstream, to a turbine portion (162) of the turbocompressor unit (160). The invention also relates to a method for circulating a refrigerating fluid inside the abovementioned device.

Abstract: A heating/cooling system includes a closed circuit refrigeration system including an evaporator. Water circulating through a closed water circuit exchanges heat with refrigerant in the evaporator, cooling the water for a cooling application. The water can also be heated by a boiler, and the heated water is used to heat a space. A water pump flows the water through the water circuit. When a current sensing relay detects a power failure, a boiler control algorithm is initiated to “trick” a motor of the compressor into believing the heating/cooling system is operating in a heating mode. Therefore, a compressor failure alarm is not generated. The water pump is powered by a battery pack during the power failure. Water continues to flow through the water circuit, preventing the water from freezing.

Abstract: An air conditioner (10) composed of a refrigerating apparatus includes a controller (90). A heating control section (91) of the controller (90) feeds electric current in an open phase state to an electric motor (62) of a compressor (30) to heat the compressor (30) in operation stop of the air conditioner (10). The heating control section (91) monitors the detection value of an outdoor air temperature sensor (72) during the operation stop of the air conditioner (10) and keeps on stopping feeding the electric current to the electric motor (62) during the time when the detection value decreases.

Abstract: The front cover of a transport refrigeration unit includes a plurality of hinged access doors, with each door being formed of a pair of spaced thermoplastic olefin sheets with their edges being bonded along the entire periphery of the door to form a hollow space between the sheets without a need for foam. The edges are bonded by a thermoforming process which provides strength and rigidity to the door. Additional thermoforming bonds are made at locations other than the periphery to provide further strength and rigidity. A ribbing structure is formed in one of the sheets and extends around the periphery thereof. Further ribbing may extend transversely across the sheet in non-peripheral positions.

Abstract: A refrigerator is disclosed. A freezing chamber evaporator and a cooling chamber evaporator are installed at an inner side of a ceiling surface of a freezing chamber and a cooling chamber. Accordingly, the freezing chamber and the cooling chamber have deeper depths thus to have large available capacities, thereby freshly receiving a large amount of food items. Furthermore, a cool air channel is formed at the freezing chamber door and the cooling chamber door so as to be connected to a cool air channel of the ceiling surface. Accordingly, a temperature difference between an inner space and a door basket does not occur, thereby storing food or beverage items received in the door basket in a fresh condition.

Abstract: The present invention relates to an in-and-out structure of a food storage container provided in a refrigerator, wherein in case that a plurality of storage containers are provided in a layer, all of the storage containers are pulled out at a time or any one of the storage containers is pulled out according to the user's choice.

Abstract: An air-flap device for a refrigerator and/or freezer for equipping a kitchen comprises an air flap (18) which is mounted so as to be pivotable about a first axis of rotation (20) between an open position and a closing position and which, in the open position, unblocks an air-passage aperture (16) for the passage of air and, in the closing position, blocks said air-passage aperture, at least substantially, against the passage of air, and said air-flap device also comprises a motorized flap-actuating mechanism for displacing the air flap in a pivoting manner. According to the invention, the flap-actuating mechanism comprises a movably disposed flap-actuating element (26) having a flap-engaging section (32) which can be moved, as a result of movement of said flap-actuating element, from outside the pivoting space of the air flap into said pivoting space in order, in doing so, to pass into engagement with the air flap and lift the latter out of one of the two flap positions towards the other.

Abstract: A refrigerator includes a first compartment, a second compartment and a multi-functional compartment that is disposed between the first compartment and the second compartment and is adjustable between temperature modes selected from the group consisting of a fresh food temperature mode, a soft freeze mode, a freezer mode and a chiller temperature mode.

Abstract: A heat generator includes an air-conditioning refrigerating system formed of a compressor, a discharge line, a condenser, a condenser liquid line, a liquid distributor, a spoiler such as metering device, an evaporator and a suction line, and a liquid delivering system. The discharge line has a head heat segment disposed in contact with a contact segment of the delivery segment for heat exchange to charge liquid passing through the delivery pipe into hot water or steam.

Abstract: A heat exchanger includes a first flat tube in which a low temperature fluid flows and a second flat tube in which a high temperature fluid flows and that is laminated on the first flat tube and arranged so that the flow direction of the high temperature fluid is parallel to the flow direction of the low temperature fluid. One of the first and second flat tubes is arranged in the direction of lamination. Ends of the flat tubes are bent in a direction intersecting at right angles both flow directions of the fluids and the direction of lamination.

Abstract: An expander-compressor unit (30) includes: a closed casing (1) holding an oil at a bottom portion thereof; a motor (2) provided in the closed casing (1); a compression mechanism (3) for compressing a refrigerant and discharging it into the closed casing (1), the compression mechanism (3) being disposed below the motor (2) in the closed casing (1); an expansion mechanism (4) disposed below the compression mechanism (3) in the closed casing (1); and a coupling mechanism (50) for coupling a compression mechanism side shaft (5) to an expansion mechanism side shaft (6). An oil supply passage (53) for supplying the oil to the compression mechanism (3) is formed in the compression mechanism side shaft (5). An oil suction port (53A) is provided in a portion of the compression mechanism side shaft (5), the portion being above the expansion mechanism (4).

Abstract: A flow of refrigerant discharged from a first compressor and cooled by a radiator is branched by a first branch portion, and the branched refrigerant of one side is decompressed and expanded by a thermal expansion valve and is heat exchanged with the branched refrigerant of the other side in an inner heat exchanger. Therefore, the branched refrigerant of the other side supplied to the suction side evaporator and a nozzle portion of an ejector can be cooled, thereby improving COP. Furthermore, a suction port of a second compressor is coupled to an outlet side of the ejector so as to secure a drive flow of the ejector, and the refrigerant discharged from the second compressor and the refrigerant downstream of the thermal expansion valve are mixed to be drawn into the first compressor so that an ejector-type refrigerant cycle device can be operated stably.

Abstract: One ozone concentrating chamber is provided therein with a part of a cooling temperature range where ozone can be selectively condensed or an oxygen gas can be selectively removed by transmission from an ozonized oxygen gas, and a part of a temperature range where condensed ozone can be vaporized, and condensed ozone is vaporized by moving condensed ozone with flow of a fluid or by gravitation to the part where condensed ozone can be vaporized, whereby the ozonized oxygen gas can be increased in concentration. Such a constitution is provided that a particle material 13 for condensation and vaporization filled in the ozone concentrating chambers 11 and 12 has a spherical shape of a special shape with multifaceted planes on side surfaces, or an oxygen transmission membrane 130 capable of selectively transmitting an oxygen gas in an ozone gas is provided.

Abstract: The present invention relates to a method of treating a hydrocarbon stream, the method at least comprising the steps of: supplying a partly condensed feed stream (10). to a first gas/liquid separator (2) and into a gaseous stream (2 and a liquid stream (30); expanding the liquid stream (30) and the gaseous stream (20) and subsequently feeding them into a second gas/liquid separator (3) at a first and second feeding point (32) respectively, the second feeding point (32) being at a higher level than the first feeding point (31); feeding a liquefied natural gas stream (70,70b) into the second gas/liquid separator (3) at a third feeding point (33) being at a higher level than the second feeding point (32); removing from the top of the second gas/liquid separator (3) a C2+ lean gaseous stream (60) and from the bottom a liquid stream (80, 80a); wherein the liquefied ?natural gas stream (70,70b) is obtained from a source (4) of liquefied natural gas from a separate plant.

Abstract: A method and to a device for separating a mixture of hydrogen, methane and carbon monoxide by cryogenic distillation is provided. In particular, the present invention relates to a method for producing a mixture of H2/CO with a low CH4 content, possibly combined with the production of CH4 in liquid form.

Abstract: Methods of reducing the concentration of low boiling point components in liquefied natural gas are disclosed. The methods involve dynamic decompression of the liquefied natural gas and one or more pre-fractionation vessels. Particular embodiments are suited for recovering helium and/or nitrogen enriched streams from a liquefied natural gas stream.

Abstract: A cryogenic installation unit comprises at least one item of equipment (2, 6A to 6H, 15) to be thermally insulated, a structure (1) for containing the at least one item of equipment, a main insulation (3) contained in the structure and, associated with this main insulation, a secondary insulation (5) of lower thermal conductivity than the main insulation, said secondary insulation (5) consisting of a vacuum insulation panel.

Abstract: A process for preparing a loose grain abrasive material comprising the steps of providing a mixture of electric arc furnace dust, sand and glass, and melting such mixture at a temperature of less than 1430 degrees Celsius.