Abstract: Provided is a sliding component capable of stably reducing the frictional resistance between sliding surfaces entailing eccentric rotation. A sliding component has a sliding surface sliding relatively to a facing sliding surface with eccentric rotation. The sliding surface is provided with a plurality of dynamic pressure generation grooves arranged in a circumferential direction and each having, in a plan view, a tapered portion configured to become narrower toward a downstream side in an eccentric rotation direction of the facing sliding surface relatively to the sliding surface.

Abstract: The present disclosure describes a system and a method for generating energy from geothermal sources. The system includes an injection well and a production well extending underground into a rock formation, a first lateral section connected to the injection well and a second lateral section connected to the production well, the first and second lateral sections connected with a multilateral connector, defining a pressure-tested downhole well loop within the rock formation and in a heat transfer arrangement therewith. The downhole well loop cased in steel and cemented in place within the rock formation. The downhole well loop to receive working fluid capable of undergoing phase change between liquid and gas within the downhole well loop as a result of heat transferred from the rock formation. The system also includes a pump to circulate working fluid, a turbine system to convert the flow of working fluid into electricity, and a cooler.

Abstract: A first output limit value is determined as an intersection point of a knock-limit output line which is set according to an exhaust gas recirculation rate and ignition timing and an exhaust-temperature-limit output line which is set according to the exhaust gas recirculation rate and ignition timing; a second output limit value is determined as an intersection point of the knock-limit output line and an air-quantity-limit output line which is set according to the exhaust gas recirculation rate, ignition timing and atmospheric pressure; and a third output limit value is determined as an intersection point of the knock-limit output line and a thermal-management-limit output line which is set according to the exhaust gas recirculation rate, ignition timing and vehicle running speed. A value of the exhaust gas recirculation rate at which the condition “P1?P2 or P1?P3” is satisfied is set as a target exhaust gas recirculation rate.

Abstract: An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability.

Abstract: An energy storage device is provided with at least one energy storage unit (1). The energy storage unit (1) comprises a thermal storage element (3) made of a solid material and an electrical heating device (5) for heating the thermal storage element (3). According to a first concept, the electrical heating device (5) is adapted to heat the thermal storage element (3) by means of generating an electric current within the material of the thermal storage element (3). According to a second concept, an electric gas insulation (8) is provided, in order to electrically insulate the electrical heating device (5) from the thermal storage element (3). Furthermore, a method for storing energy by means of such an energy storage device is provided.

Abstract: An energy storage system (TES) converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the TES provides higher-temperature heat through non-combustible fluid to an alumina calcination system used to remove impurities or volatile substances and/or to incur thermal decomposition to a desired product.

Abstract: An energy storage system (TES)converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. In one application, the energy storage system provides higher-temperature heat to a steam cracking furnace system for converting a hydrocarbon feedstock into cracked gas, thereby increasing the efficiency of the temperature control.

Abstract: A system and method for harnessing the kinetic energy of the ocean to generate electricity. The system includes a dock made from a buoyant material. The dock has floats at its corners that can receive fixed pillars, such that the floats can move up and down relative to the pillars. Either of the float and the respective pillar has one or more permanent magnets while the other has the conductive coil. The movement of the dock and thus the floats relative to the fixed upstanding pillars results in the generation of electricity.

Abstract: Provided is a sliding component capable of reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component is formed in an annular shape and has a sliding surface relatively sliding with eccentric rotation. A plurality of grooves not communicating with spaces on the inner and outer diameter sides of the sliding component are circumferentially provided in the sliding surface.

Abstract: A trunnion-to-disk connection for use on an open fan configuration of a gas turbine engine may include an integral trunnion and blade spar inserted through a trunnion aperture of a fan disk and supported by top bearing and a bottom bearing. A cavity can be provided between a trunnion of the integral trunnion and blade spar and the fan disk, as well as between the top bearing and bottom bearing. Pressurized hydraulic fluid can be supplied to the cavity to urge the integral trunnion and blade spar in a direction to preload the bearings. Prior to pressurization, and prior to installation of the bottom bearing, the trunnion can be inserted into a trunnion aperture of the fan disk such that an end of the trunnion extends past the fan disk to provide sufficient space to insert the bottom bearing from within the open interior of the fan disk.

Abstract: A propelling device is provided that is excellent in safety during storage and securely propels a propelling section during operation. A propelling device includes: a fixed section; a propelling section; a shape memory alloy placed between the fixed section and the propelling section; and a coupling member coupling the fixed section, the propelling section, and the shape memory alloy with each other, wherein the shape memory alloy is in a state of a compressed martensite phase, and the shape memory alloy is transformed from the state of the martensite phase to a state of an austenite phase, causing strain energy to be stored, and action of the strain energy is used to break at least part of the coupling member and also impart a propelling force to the propelling section, and action of the propelling force causes the propelling section to be propelled in a direction away from the fixed section.

Abstract: The invention relates to an actuator element (10), comprising an actuator (12), which comprises a shape memory alloy and is designed to shorten or extend itself in the longitudinal extension direction thereof when in an excited state; an electronic control unit, which has a carrier element (18) and a plurality of electronic components (26) for exciting the actuator (12) on the basis of a control signal; and a movable component (20), which is coupled to the actuator and is movable by means of the actuator (12) relative to the carrier element (18); wherein the carrier element (18) defines a guide portion (16), in particular a dimensionally stable guide portion, by means of which the actuator (12) is guided along the longitudinal extension direction thereof.

Abstract: A water pump having a coolant flow path includes a stator disposed in a housing, a rotor surrounded by the stator, a shaft disposed in a flow path of the rotor, a first blade connected to the shaft, a first pipe spaced apart from an inner wall of the rotor defining the flow path to define a coolant inlet, a second pipe spaced apart from the inner wall to define a coolant outlet, and a second blade connected to the shaft and disposed in the first pipe or the second pipe.

Abstract: A gas turbine engine for an aircraft comprises an engine core comprising a turbine, a compressor, and a core shaft connecting the turbine to the compressor, wherein a compressor exit temperature is defined as an average temperature of airflow at the exit from the compressor; and a fan located upstream of the engine core, the fan comprising a plurality of fan blades extending from a hub, each fan blade having a leading edge and a trailing edge, wherein a fan rotor entry temperature is defined as an average temperature of airflow across the leading edge of each fan blade at cruise conditions and a fan tip rotor exit temperature is defined as an average temperature of airflow across a radially outer portion of each fan blade at the trailing edge at cruise conditions. A core to fan tip temperature rise ratio is in the range from 2.845 to 3.8.

Abstract: A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water over which waves tend to pass. The pump incorporates an open-bottomed tube with a constriction. The tube partially encloses a substantial volume of water with which the tube's constriction interacts, creating and/or amplifying oscillations therein in response to wave action. Wave-driven oscillations result in periodic upward ejections of portions of the water inside the tube that can be collected in a reservoir that is at least partially positioned above the mean water level of the body of water, or pressurized by compressed air or gas, or both. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power (making the device a wave engine), or else the device's pumping action can be used for other purposes such as water circulation, propulsion, or cloud seeding.

Abstract: Aspects of the present disclosure relate to steam cycle methods, systems, and apparatus for efficiently reducing carbon footprints in plant systems. In one aspect, a cycle is conducted in a plant system to collect CO2. In one aspect, a cycle is conducted in a plant system to recycle energy. The plant system includes one or more of a power production system, a refining system, and/or a petrochemical processing system.

Abstract: Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.

Abstract: An intercooler is a two-stage water-cooled intercooler having a first core and a second core. A condenser for an air conditioner includes a water-cooled condenser and an air-cooled condenser. A drive system electrical component such as an inverter, the second core, and the water-cooled condenser are cooled by a second cooling water circuit including a sub-radiator. Cooling is carried out by the second cooling water circuit including the sub-radiator. The sub-radiator and the air-cooled condenser are located in front of a main radiator.

Abstract: An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability.

Abstract: An energy storage system converts variable renewable electricity (VRE) to continuous heat at over 1000° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. An array of bricks incorporating internal radiation cavities is directly heated by thermal radiation. The cavities facilitate rapid, uniform heating via reradiation. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. Gas flows through structured pathways within the array, delivering heat which may be used for processes including calcination, hydrogen electrolysis, steam generation, and thermal power generation and cogeneration. Groups of thermal storage arrays may be controlled and operated at high temperatures without thermal runaway via deep-discharge sequencing. Forecast-based control enables continuous, year-round heat supply using current and advance information of weather and VRE availability.