687results about "Working fluid for engines" patented technology

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

The invention relates to a reciprocating compressor. The reciprocating compressor may include a housing, a drive motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper, and the suction valve stopper composed of an elastic member may be disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve to limit an opening degree of the reed valve portion. Therefore, the opening degree of the suction valve can be sufficiently ensured, so that not only can the cooling force in a high-load operation region be improved, but also dead volume can be prevented in advance, and then the energy efficiency in a low-load operation region and / or a high-load operation region can be improved.

Provided is a water pump using an axial gap-type electric motor employing a rare-earth-free magnet. The water pump (EWP) includes: a pump housing having a space in a sealing state on one side thereof, in which, on the other side thereof, an inlet through which a fluid is introduced and an outlet through which the introduced fluid is discharged are connected through a fluid flow passage; a rotor rotatably supported on the fluid flow passage; an impeller integrally formed with the rotor on the upper side of the rotor; a stator arranged in the lower space to generate a rotating magnetic field to rotatably drive the rotor; and a waterproof partition wall arranged inside the pump housing to separate the rotor from the stator.

Intake and gas separators for a downhole rotary pump define a fluid flowpath and comprise two or more intake stages arranged in parallel, with two or more of the intake stages each having one or more impeller. Multiple intakes may be configured in parallel and series, in some cases being provided as compact axial length gas separators.

A device and related method that provides, but is not limited thereto, a two-phase heat transfer device with unique combination of enhanced evaporation and increased cooling capacity. An advantage associated with the device and method includes, but is not limited thereto, increased cooling capacity per unit area, controlled and optimized evaporation, prevention of boiling, and prevention of drying of the evaporator. An aspect associated with an approach may include, but is not limited thereto, using anon-wetting coating or structure to keep working fluid away from the spaces between elongated members of an evaporator and using a wetting coating or structure to form thin films of working fluid around the distal region of the elongated members. For example it can be used to cool a computer chip, a skin of a hypersonic flying object, parabolic solar collector, turbine or engine blade, or any other heat source that requires high heat flux.

A device has a rotor module comprising a motor generator, rotor blades, and a rotary-wing kinematic system for the rotor blades connected to the motor generator. The rotor blades are each divided into a plurality of longitudinal sections, each for receiving at least one actuator integrated in a longitudinal member or transverse member of the rotor blade, and have a variable, asymmetrical airfoil which, in one revolution of the rotor blade on a diameter of the circular path, the diameter being freely orientable within an adjustment range and having turning points, can be adjusted in at least one longitudinal section of the rotor blade with a length in such a way that the suction surface and the pressure surface of the asymmetrical airfoil change at the turning points from the outside to the inside of the circular path, or vice versa.

Provided in embodiments of the present application are a head mechanism and a fan apparatus. The head mechanism includes: a casing, where a primary air inlet and an air outlet are provided on a circumferential side wall of the casing, and an auxiliary air inlet is provided on an axial wall surface of the casing; and a centrifugal volute arranged in the casing, where a centrifugal fan is arranged in the centrifugal volute, and an air duct outlet corresponding to the air outlet and an air duct inlet corresponding to the auxiliary air inlet are provided on the centrifugal volute; and air flowing from the primary air inlet and the auxiliary air inlet flows into the centrifugal volute through the air duct inlet. According to the embodiment of the present application, since the primary air inlet located on the circumferential side wall is provided.

A device and related method that provides, but is not limited thereto, a two-phase heat transfer device with unique combination of enhanced evaporation and increased cooling capacity. An advantage associated with the device and method includes, but is not limited thereto, increased cooling capacity per unit area, controlled and optimized evaporation, prevention of boiling, and prevention of drying of the evaporator. An aspect associated with an approach may include, but is not limited thereto, using a non-wetting coating or structure to keep working fluid away from the spaces between elongated members of an evaporator and using a wetting coating or structure to form thin films of working fluid around the distal region of the elongated members. For example it can be used to cool a computer chip, a skin of a hypersonic flying object, parabolic solar collector, turbine or engine blade, or any other heat source that requires high heat flux.

A scroll compressor is disclosed. The scroll compressor has back pressure holes which are formed in a non-orbiting scroll and a back pressure chamber assembly, and communicate a compression chamber and a back pressure chamber. In addition, a back pressure valve is provided inside the back pressure hole to change the passage area of the back pressure hole by moving along the longitudinal direction of the back pressure hole due to the pressure difference between the compression chamber and the back pressure chamber. Due to the back pressure valve, pressure pulsation in the back pressure chamber can be improved.

Renewable energy sources such as solar power and wind power are intermittent and variable. It is desirable to store energy produced by these systems so it can be utilized when these sources are not producing. The battery system combines the force of gravity with high density water to generate electricity in a turbine. The water is stored at surface level and returned to the elevated storage site when renewable energy is available to pump it to the storage facility. The density of the water can be increased with the use of soluble and insoluble ground minerals using suspending agents and surfactants. These batteries can operate independently to generate AC current for supporting grid demand or can generate DC current for specific applications like regenerating chemical batteries used in transportation devices such as automobiles and trucks.

A power tunnel comprises a tube body, an inlet, and an outlet. The tube body provides space to accommodate gases, liquids, people, vehicles, etc. The power tunnel can be used for energy storage, power generation, air-raid shelter, or other purposes.

The present invention provides a heat engine operating on a novel closed thermodynamic cycle. The primary characteristics of the heat engine comprise a boiler, condenser, liquid pump, and a regenerative expander in which heat is recovered from the expansion / work extraction process to be returned to the sensible heat addition process that occurs between the condenser outlet and the boiler inlet. The regenerative expander may be comprised of a novel turbine design described as part of the present invention. The primary characteristic of the turbine being a rotor consisting of a hub intersected by a plurality of narrow helical channels through which motive fluid is directed by a plurality of nozzles to induce rotation in the same direction as the helical path of the channels. The liquid pump of the heat engine may also be comprised of a novel design based on similar working principles to the above turbine.

A fluid-driven power generation unit, may include two sets of airfoils disposed on opposite sides of the power generation unit with their leading edges facing a windward end of the power generation unit; a body element having a curved front face and a back disposed, wherein at least a portion of the elongate body element is disposed between the first and second set of airfoils; and a power generation unit disposed in alignment with the body element, the power generation unit including at least a housing, and a turbine and an electrical generation unit actuated by the turbine disposed within the housing. As a fluid flows across the airfoils, the lifting force of the airfoils causes a reduced pressure within the power generation unit, drawing air past the turbine, through the body element and out the back of the body element, thereby extracting power from this secondary fluid flow stream.

Provided is an electric water pump including: a lower casing to which the bottom of a shaft is fixed; an upper casing coupled to the top of the lower casing and including an upper support part extending from the inside; an impeller inserted into an internal space formed by coupling the lower casing with the upper casing and having a thrust plate coupled thereto; and a rotor formed integrally with the impeller, wherein an upper side of the thrust plate is supported by the upper support part and a lower surface of the thrust plate is supported by the top of the shaft. In this way, the impeller and the rotor may be supported on both sides of a central axis, and a frictional force occurring between the parts in contact with each other and rotated relatively may be minimized, thereby improving efficiency and reducing noise.

A system for generating electrical power may include a flowline having an inlet that receives reservoir fluid at a first pressure, an outlet that outputs the reservoir fluid at a second pressure, a first flow path between the inlet and the outlet, and a second flow path between the inlet and the outlet, in parallel with the first flow path. The difference between the first pressure and the second pressure may include a pressure differential, and the system may include a valve that adjusts the pressure differential. Additionally, the system may include a turbine disposed along the second flow path that generates mechanical energy from a flow of the reservoir fluid induced by the pressure differential, and the mechanical energy may be converted to electrical energy.

An electric compressor includes a motor configured to generate power; a compression mechanism configured to be driven by the motor and to compress a refrigerant; an inverter configured to control the motor; and a connector configured to include a terminal pin connecting the motor and the inverter, a plate supporting the terminal pin, and an insulator that insulates between the terminal pin and the plate, wherein at least a portion of the insulator is formed to be surrounded by the terminal pin, so that it is possible to suppress the increase in cost, weight, and size due to the connector.

A rotary assembly of a pressurized air system for an aircraft with a rotor configured to be mechanically coupled to a spool of a gas turbine engine and a flow modifier with a first section and a second section. The first section defining a plurality of first flow channels configured to receive flow from the rotor. The second section defining a plurality of second flow channels configured to direct flow towards the rotor. The rotary assembly is configured to permit relative movement between the rotor and the flow modifier to move between a turbine configuration in which the rotor is configured to receive air from an external air source to drive the spool to rotate and a compressor configuration in which the rotor is configured to be driven to rotate by the spool and to receive and compress air from the gas turbine engine.

The embodiment of the invention discloses a deep well filling method and system with potential energy recovery and pressure regulation and control functions, and relates to the technical field of deep well filling pipeline conveying. The filling method comprises the steps that filling slurry of a filling station is conveyed to a goaf through a pipeline; the filling slurry drives the turbine to drive the permanent magnet synchronous generator to generate power, and the electric energy is stored in the hybrid energy storage assembly; collecting pressure and flow of an outlet of the hydraulic turbine in real time through a pressure sensor and a flow meter; according to a pressure value and a flow value collected by a pressure sensor and a flow meter in real time and an energy storage state of the hybrid energy storage assembly, the current adjustment amount of a turbine excitation module of the permanent magnet synchronous generator and the opening adjustment amount of an electro-hydraulic proportional valve are calculated; and adjusting the excitation current of a turbine excitation module of the permanent magnet synchronous generator based on the current adjustment amount, and adjusting the opening degree of the electro-hydraulic proportional valve based on the opening degree adjustment amount. The method is suitable for a deep well filling scene.

Processes, systems, and apparatus are provided for producing a compressed process gas comprising light olefin such as ethylene. The process utilizes a pyrolysis reactor to produce the process gas. A power generator utilizes a turbine operated based on an Allam cycle to produce shaft power for operating one or more compressors involved in processing of the process gas while producing a reduced or minimized amount of CO2 that is released as a low-pressure gas phase product. Examples of using the shaft power for processing of the process gas can include compressing the process gas a process gas compressor powered by the produced shaft power and cooling the process gas using a refrigeration compressor powered by the produced shaft power.

A vertical-axis turbine extending longitudinally along an axis of rotation is disclosed, wherein the turbine has first and second blades disposed around the axis of rotation, the first and second blades having proximal portions and distal portions located relatively close to and away from the axis of rotation respectively, and body portions located between the proximal portions and the distal portions. The turbine also has a rotor assembly coupled to an end of the first and second blades. The proximal portion of the first blade contacts the body portion of the second blade and the proximal portion of the second blade contacts the body portion of the first blade to form a closed volumetric region around the axis of rotation. The shape of the first and second blades may be defined by twisting a sheet of flexible material according to a frame comprising two or more pairs of battens.

The present application pertains to systems and methods for desalination. In one embodiment the system employs a first storage reservoir configured to be near the surface of a body of water and configured to store a low density fluid. A second storage reservoir is configured to be located below the surface of the body of water. A desalination system is operably connected to the second reservoir. Desalinated water is produced by allowing desalination permeate to displace low density fluid in the second reservoir and transfer the low density fluid from the second reservoir to the first reservoir. Desalinated water is exported by transferring low density fluid from the first reservoir into the second reservoir to displace desalinated water from the second reservoir into a water export pipeline.

An energy conversion and storage system, comprises a piston defining an enclosed volume. The piston has an inlet valve proximate a bottom of the piston and an outlet valve proximate a top of the piston. A guide having a vertical displacement is arranged so that the piston travels along the guide. The guide has a compressed gas outlet proximate a bottom of the guide and is arranged to move gas into the piston when the piston contacts the compressed gas outlet. The guide has a release valve operator disposed proximate a top of the guide and is arranged to open the outlet valve when the piston contacts the release valve operator. A source of compressed gas in communication with the compressed gas outlet. The system has means for converting motion of the piston along the guide into either (i) motion of another object or (ii) electric power.

A screw spindle pump comprising a spindle housing (2) in which a drive spindle (3) and at least one meshing running spindle (4) are received in spindle bores, and an outer housing (5) enclosing the spindle housing (2), on which an axial inlet port (6) and a radial outlet port (9) are provided, wherein the spindle housing (2) has an axial fluid outlet for the fluid conveyed through the spindle housing (2) via the drive and running spindles (3, 4), and a drive motor (11) comprising a drive shaft (12) which runs through a bore (23) in a housing wall (15) axially closing the interior of the outer housing (5) and is coupled to the drive spindle (12), wherein a portion of the fluid flowing from the fluid outlet of the spindle housing (2) flows through the sealless bore (23) along the drive shaft (12) into the drive motor (11), cooling it. and flows back into the outer casing (5).

To provide a fan capable of reducing the noise associated with an unstable flow.SOLUTION: A fan (axial fan, radial fan or diagonal fan) has an impeller and a guide device that is in a flow path upstream of the impeller, preferably in the flow path upstream of an inlet area of an inlet nozzle. The guide device is designed as an intake grid (1) having flat webs (5). The flat webs (5) form a plurality of flow channels resembling grid apertures (6).SELECTED DRAWING: Figure 1

To provide a heat exchanger system.SOLUTION: In one aspect, the disclosed embodiments relate to a system. The system may include a turbine and a regenerative heat exchanger system. The regenerative heat exchanger system is configured to receive the exhaust gas from the turbine. The regenerative heat exchanger system may include a pre-cooling section for cooling the exhaust gas, a primary heating section for receiving the cooled exhaust gas, and a secondary heating section for receiving the cooled exhaust gas.SELECTED DRAWING: None

A concave hermetic air / brine encapsulating vessel, or cap (10), positioned in the sea at a chosen area according to tidal range. Wherein the open underside of the vessel allows brine / sea water to freely enter or exit the vessel and the tide rises and falls respectively. This rise and fall of the brine within the vessel will result in changes to the air pressure within the vessel, as the air because pressurised as the brine rises, and forms a vacuum with the vessel as the brine falls. These changes in pressure are used to operate a pneumatic actuator (60), via a suitable system of valves (50,52) coupled to the inlets and / or outlets of a pipe couple to a vent (30) on the upper portion of the vessel, or within a plurality of pipes couple to a manifold (40) coupled to the vent (30). Wherein the operation of the pneumatic actuator (60) powers a generator (62) for producing and storing power.

A rotational output assembly is configured to provide power to a drive assembly to cause pumping by a pump. The rotational output assembly includes an electric motor and a pinion drive projecting axially from the motor. The pinion drive interfaces with bearings supported on a pump frame. The pinion drive includes a gear teeth section between portions interfacing with the bearings supported on the pump frame. The gear teeth section interfaces with a drive gear of the drive assembly to cause rotation of the drive gear.

Device and Method: Thrust reverser (20) for a propulsion system (10), comprising a fixed part (29), a movable part (39), and an actuation device (38), adapted to move the movable part (39) between the closed and deployed states, the fixed part comprising a deflection edge (40) adapted to direct an airflow from the inside of the thrust reverser outwards through a counter-thrust opening, characterized in that said deflection edge (40) has a surface (50) configured to generate turbulence in the fluid flow along the deflection edge (40) and minimize fluid separation along said deflection edge (40). Figure for the abstract: Fig. 8.

An aircraft propulsion system (20) includes a bottoming cycle (60) where a working fluid is heated and expanded through a bottom turbine to generate shaft power. A first heat exchanger (44) provides thermal communication between a fuel cell exhaust flow and the working fluid of the bottoming cycle (60). The working fluid is cooled by a cryogenic fuel flow (56) in a fuel / working fluid heat exchanger (54).