245results 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.

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 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.

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).

To suppress a decrease in the operating rate of a compressor when a test run of a predetermined compressor unit is performed. [Solution] The compressor includes a plurality of compressor units, each having a compressor body that compresses gas and a motor that drives the compressor body, piping that connects the plurality of compressor units, and a control device that controls the plurality of compressor units. The control device stops operation of a compressor unit that satisfies an abnormal stop condition among the plurality of compressor units, and performs a test run of the compressor unit that satisfies the abnormal stop condition while continuing the number-controlled operation of the other compressor units.

An exemplary power system utilizes turbines configured within a water intake conduit to the desalination processor to produce power for the desalination processor. Water intakes are configured to provide a natural flow of water to the desalination processor though hydrostatic pressure. One or more turbines coupled with the water intake conduits are driven and produce power for the system, as well as through solar and battery power. The desalination processor incorporates Graphene filters to and may include a structured water system to increase the H3O2 concentration of the water prior to Graphene filters. Discharge water may be pumped back into the body of water but be separated from the intakes. A secondary power source, such as a renewable power source, may be used to produce supplemental power for the system. Power produced may be provided to a secondary outlet, such as a power grid, all above and / or underground.

The present invention provides a passive pitch system for a tidal turbine having a rated power output, the passive pitch system comprising: (a) a rotor rotatably engaged with a mechanical power transmission system of the tidal turbine, the rotor having a rotor hub rotatable about a rotor axis, the rotor hub having blade receiving portions for engagement with the blades; and (b) blades having (i) a first end and a second end opposite the first end, a blade inner portion extending from the first end toward the second end, and a blade outer portion extending from the second end toward the first end. a blade comprising: (i) an elongated body having a blade outer portion, the elongated body defining a leading edge extending between first and second ends and a trailing edge extending between the first and second ends opposite the leading edge; (ii) a blade root portion located at the first end of the blade, the blade root portion configured to fixedly engage the elongated blade body and to rotatably engage a blade receiving portion of the rotor about a pitch axis; and (c) a lever having: (i) a first engagement portion for fixedly engaging the blade root portion; and (ii) a resilient biasing means. a rotor comprising: (a) a lever having a body having (i) a second engagement portion opposing the first engagement portion for engagement with the rotor hub; and (ii) a third engagement portion for engagement with the stop member; d) a stop member fixedly engaging the rotor hub; and e) elastic biasing means having a first end engaging with the second engagement portion of the lever and a second end opposite the first end, the second end being coupled at a position away from the stop member and having a predetermined preload selected according to the rated power output of a tidal turbine with which the rotor hub is engaged in use; wherein, in use, when a hydrodynamic moment acting on the blade about the pitch axis is less than a moment applied to the blade about the pitch axis by the elastic biasing means, the elastic biasing means biases the lever into engagement with the stop member; and when the hydrodynamic moment acting on the blade about the pitch axis exceeds the moment applied to the blade about the pitch axis by the elastic biasing means, the blade is rotatable about the pitch axis and moves the lever away from the stop member.

A scroll compressor is provided. The scroll compressor comprises: a first compression part comprising a first stationary scroll and a first orbiting scroll; and a second compression part comprising a second stationary scroll and a second orbiting scroll, wherein at least one of the first compression part and the second compression part may have a capacity variable part equipped therein so as to induce refrigerant discharge from a compression chamber or to induce idling by blocking refrigerant suction in the compression chamber. The above configuration facilitates varying the capacity of the compressor while significantly reducing the capacity variation ratio, thereby increasing the energy efficiency of the compressor and the air conditioner equipped therewith.

Conventional hydropower plants require significant hydrostatic head to produce sufficient power. As such, there is a need for efficient hydropower plants that may be utilised in sites having a low hyd

This invention provides a porous piston body for an air compressor cylinder, specifically a piston head in an air compressor cylinder with at least one fixing pin on its top surface to position at least one intake baffle. The intake baffle has at least one bent section adjacent to its positioning area, and the other side of the intake baffle on the bent section is an operating area. This operating area can cover at least one air hole on the top surface of the piston head. An annular groove is recessed on the piston head surrounding the air hole, in which a spring can be housed. The other end of the spring extends upward along the annular groove and abuts against the back of the aforementioned intake baffle. The operating area forms a slightly open ventilation space with the top surface of the piston head on the back side facing away from the cylinder top, so that the pressure inside the cylinder is balanced with the external atmospheric pressure.

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.

The recirculation hydro-pneumatic impulse turbine includes a collector assembly having a central draft tube extending below the collector assembly, a collector plate having a generally horizontal upper surface with the draft tube configured to be in fluid communication with the upper surface, and a series of drive cups circumferentially disposed about the upper surface, a drive assembly around the central draft tube having a fluid inlet at its lower end in fluid communication with the lower end of the draft tube and a plurality of outlet nozzles at its upper end configured to be tangentially disposed, and a central air tube having an upper air inlet and a lower air distribution manifold having at least one venturi outlet capable of entraining air into the fluid to assist in moving the fluid upward from the lower end of the drive assembly to the outlet nozzle. In use, a fluid jet formed at the outlet nozzle engages the drive cup to create relative rotation between the outlet nozzle and the drive cup about a vertical axis such that the rotation can provide useful work, and fluid then flows from the drive cup, across the upper surface of the collector plate, down the draft tube and into the fluid inlet of the drive assembly where the fluid, along with air, is recirculated back to the outlet nozzle.

The pump apparatus for delivering liquefied gas includes a suction container (9) and a pump (10). The suction container (9) has a vacuum insulation container (18) and a vacuum insulation lid (19). The pump (10) is disposed in a pump chamber (30) formed in the vacuum insulation container (18). A gas-layer space (L) for forming a gas insulation layer made of the boil-off gas is formed between an inner surface of the vacuum insulation container (18) and an outer surface of a hermetic structure (25) of the vacuum insulation lid (19). The gas-layer space (L) is in communication with the pump chamber (30).

The invention relates to a blower. A blower according to the present invention comprises: a base; a housing disposed on the upper side of the base and having a suction port and a discharge port formed therein; a rotating plate disposed on the lower side of the housing and rotatably disposed on the base; a part of the electric wire is exposed to the outside of the base, and the rest part of the electric wire extends to the upper side of the rotating plate through the base; and a wire holder which is fixedly arranged on the rotating plate and fixes one side of the wire extending from the inner side of the base to the upper side of the rotating plate. The base includes: a wire fixing protrusion that fixes the other side of the wire extending from the outside to an inner space of the base; and a wire guide rib that fixes the arrangement of a part of the wire that changes in the inner space of the base as the rotating plate moves.

The invention relates to a wind or hydroelectric power plant (1) comprising a housing (2), a turbine and a generator (4) driven by the turbine, wherein the housing (2) has an inlet opening (12) for the wind or the water to flow into the turbine and an outlet opening (15) for the wind or the water to flow out from the turbine, wherein the housing (2) has a flow-conducting housing part, designed as a wind or water receiving surface (10), in order to compress the air and to increase the wind or water velocity used for driving the turbine, and wherein the entire turbine is arranged within the housing (2), and wherein the turbine is in the form of a worm shaft (20). It is essential here for inlet wings (11) to be formed on the housing (2), in order to adjust the size of the inlet opening (12).

The present invention pertains to a motor pump, a pump unit, and a balance adjustment method for an impeller of the motor pump. The motor pump is provided with an impeller (1), a rotor (2), a stator (3), and a bearing (5). The rotor (2) and the bearing (5) are provided to a suction-side region (Ra) of the impeller (1).

By means of a device for compressing a gas stream, comprising: at least one feed line (2) feeding a gas stream comprising at least one gaseous compound to a compressor unit (4), and at least one discharge line (3) for discharging the compressed gas stream from the compressor unit; a compressor unit (4) comprising at least one first compressor stage (1) and one final compressor stage (F) wherein the feed pipe (2) is in fluid communication with the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is in fluid communication with the gas inlet of the last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is in fluid communication with the gas inlet of the final compressor stage (F) and the discharge line (3) is in fluid communication with the gas outlet of the final compressor stage (F); at least one first bypass (6a) connecting the exhaust line (3) to a fluid connection between the last cooling device (WA00F) and an immediately preceding compressor stage, in which the exhaust line (3) is connected by means of a first flow regulator (5a) located in the first bypass (6a) and comprising at least one valve (10), the amount of gas carried in the bypass gas flow can be controlled and thus the through-flow of the gas flow through the final compressor stage (F) can be adjusted; at least one second bypass (6b) provided with a second flow regulator (5b), in which the bypass connects the fluid connection between the last cooling device (WA00F) and the final compressor stage (F) to the feed line (2), and by means of a corresponding method which can be carried out using this device, the cooling device (WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, WA00F, compressor stall of the compressor unit (4) can be better coordinated with individual compressor stages, and condensation of the returned compressed gas stream can be avoided. The final compressed gas stream produced by the method provides a compressed hot gas that can be used to integrate heat into the process steps after compression.

A fluid control system (100, 200) for preventing loss of fluid modes of high-density fluid (HDF) retained in hydro storage system, comprising upper fluid storage tank (102A, 202A) configured to retain volume of HDF, lower fluid storage tank (102B, 202B) configured to retain volume of HDF and interconnecting penstock line conduit (104, 204) configured to communicate retained HDF from upper fluid storage tank to lower fluid storage tank; wherein penstock line conduit is attached at first end (104A, 204A) to outlet (106, 206) arranged in upper fluid storage tank and second end attached to inlet within lower fluid storage tank; the fluid control system further comprises vent line conduit (110, 210) comprising elongate body with first end (110A, 210A) attached to inlet (112, 212) arranged in upper fluid storage tank and second end (110B, 210B) attached to an outlet (114, 214) arranged in lower fluid storage tank.

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 scroll compressor including a casing; a main frame including a receiving groove formed on an upper surface of the main frame; a fixed scroll on the upper surface of the main frame; an orbiting scroll arrangeable in the receiving groove of the main frame and engaging with the fixed scroll to form a compression chamber; an axially compliant frame arrangeable in the receiving groove of the main frame, the axially compliant frame being at a lower side of the orbiting scroll, moveable relative to the lower side of the orbiting scroll, and configured to divide the receiving groove into a first back pressure chamber and a second back pressure chamber; a drive shaft coupleable to a lower portion of the orbiting scroll and configured to rotate the orbiting scroll; and a drive motor arrangeable below the main frame and configured to rotate the drive shaft.

By means of a device for compressing gas of a gas stream, comprising: at least one supply line (2) for a gas stream containing at least one gaseous compound to a compressor unit (4), and at least one discharge line (3) for discharging the compressed gas stream from said compressor unit; said compressor unit (4), comprising at least one first compressor stage (1) and a final compressor stage (F), wherein the supply line (2) is fluidically connected to the gas inlet of the first compressor stage (1) and the gas outlet of the first compressor stage (1) is fluidically connected to the gas inlet of a last cooling device (WA00F), and the gas outlet of the last cooling device (WA00F) is fluidically connected to the gas inlet of the final compressor stage (F), and the discharge line (3) is fluidically connected to the gas outlet of the final compressor stage (F); at least one first bypass (6a), which connects the discharge line (3) to the fluid connection located between the last cooling device (WA00F) and the compressor stage immediately before it, wherein by means of a first through-flow regulator (5a) which is located in the first bypass (6a) and comprises at least one valve (10), the gas amount conducted in the bypass gas stream can be controlled and as a result the through-flow of the gas stream through the final compressor stage (F) can be regulated; at least one second bypass (6b) provided with a second through-flow regulator (5b), wherein said bypass connects the fluid connection located between the last cooling device (WA00F) and the final compressor stage (F) to the supply line (2), and by means of a corresponding method that can be carried out using this device, the compressor stall of the compressor unit (4) can be better coordinated to the individual compressor stages and condensation of the returned, compressed gas stream can be avoided. The finally compressed gas stream produced by the method provides a compressed, hot gas that can be used to integrate heat into process steps following compression.