Abstract: A platform for supporting a nozzle guide vane for a gas turbine is provided. The platform has a gas passage surface arranged to be in contact with a streaming operation gas, and a cooling channel for guiding a cooling fluid within the cooling channel formed in an inside of the platform. A cooling portion of an inner surface of the cooling channel is in thermal contact with the gas passage surface. The platform is an integrally formed part representing a segment in a circumferential direction of the gas turbine. The cooling channel has a first cooling channel portion and a second cooling channel portion arranged downstream of the first cooling channel portion with respect to a streaming direction of the operation gas. The first cooling channel portion and the second cooling channel portion are interconnected.

Abstract: The invention is an ocean thermal energy conversion method and a system in which a motive fluid having predetermined characteristics is circulated in a closed loop between a cold source in cold deep ocean water and heat sources in warm surface water. The motive fluid is compressed between the cold source and a first primary warm water heat source resulting in the motive fluid being substantially totally vaporized at an outlet of the warm water heat source. The motive fluid is heated downstream from the primary heat source by a secondary heat source. The thermal energy of the heated motive fluid is recovered from a turbine and the motive fluid is condensed in the cold source.

Abstract: The present invention provides a device which comprises: a heat exchanger (1) for transferring heat of a heat-supplying medium to a working medium which differs from said heat-supplying medium, a first supply device designed to provide a flow of the heat-supplying medium at a first temperature from a heat source to the heat exchanger, and a second supply device which is designed to deliver the heat-supplying medium after it has passed through the heat exchanger, and/or a further medium at a second temperature lower than the first temperature, to the flow of the heat-supplying medium at the first temperature.

Abstract: A rotor has at its two axis end portions an upper large-diameter inner circumferential portion and a lower large-diameter inner circumferential portion that have inner diameters larger than the inner diameter of the axially middle portion of the rotor and are offset in the radial direction. A crankshaft has a passageway, which is formed in the crankshaft and allows refrigerant to flow therethrough, and a gas venting hole, which provides communication between the passageway and at least one discharge opening formed in the outer circumferential surface of the crankshaft. The at least one discharge opening is formed at a position facing the inner circumferential surface of the lower large-diameter inner circumferential portion 5b on the compression unit side.

Abstract: A Stirling cycle machine. The machine includes at least one rocking drive mechanism including a rocking beam having a rocker pivot, at least one cylinder and at least one piston. The piston is housed within a respective cylinder and is capable of substantially linearly reciprocating within the respective cylinder. The drive mechanism includes at least one coupling assembly. Also, a crankcase housing the rocking beam and housing a first portion of the coupling assembly is included. The machine also includes a working space housing the at least one cylinder, the at least one piston and a second portion of the coupling assembly. An airlock is included between the workspace and the crankcase and a seal is included for sealing the workspace from the airlock and crankcase. A burner and burner control system is also included for heating the machine and controlling ignition and combustion in the burner.

Abstract: This power generation system (20A) includes a plurality of power generation units (50A, 50B, 50C, . . . ) which are provided in parallel, wherein each of the power generation units (50A, 50B, 50C, . . . ) includes an expander (26) configured to be rotated by a working medium, a power generator (28) configured to generate power through rotation of the expander (26), a rectifier (29), a medium circulation system (22) configured to pump the working medium into the expander (26), a relay (70) configured to interrupt power between the power generator (28) and an external power system (30), an operating unit (40A, 40B) configured to be operated when maintenance starts, and a relay driving unit (71) configured to interrupt power between the power generator (28) and the external power system (30) by the relay (70) when the operating unit (40A, 40B) has been operated.

Abstract: The invention relates to a device comprising at least one vertical pump (3) and at least one associated turbine (4) for transporting, over a level difference, a heat-transfer fluid brought to a high temperature, wherein the device further comprises a device for mechanically coupling the turbine (4) with the pump (3), comprising a gearbox (21) with a gimbal coupling (41) located on the turbine (4) side, allowing the mechanical energy produced by the turbine (4) to be reused to actuate the pump (3).

Abstract: Methods for thermalsiphoning supercritical CO2 within a geothermal formation includes providing a geothermal energy system that includes an underground hot rock reservoir, a production well, and an injection well that together form a fluid path suitable for circulating supercritical CO2. The supercritical CO2 flows by thermosiphoning. Thermosiphoning is maximized by maintaining a pressure between 1400-4000 psia, an injection temperature in a range from 50-200 C and a production temperature in a range from 150-600 where injection temperature and the production temperature differ by at least 50° C.

Abstract: In the embodiment, a steam valve device has, a steam regulating valve, and an intermediate flow path connecting the main steam stop valve and the steam regulating valve. The main steam stop valve and the steam regulating valve respectively have: casings where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods extend upward, and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from downward direction to horizontal direction to guide the main steam toward the outlet ports of the steam regulating valves.

Abstract: A screw compressor includes a casing, a screw rotor, a low-pressure-side bearing, and a low-pressure-side bearing holder holding the low-pressure-side bearing. The screw rotor is housed in the casing to form a compression mechanism to compress a refrigerant. The low-pressure-side bearing is arranged in a low-pressure-side region inside the casing and rotatably supports a drive shaft of the screw rotor. The casing has a suction port with an opening facing the low-pressure-side bearing holder as viewed along an axial direction. A filter member is attached to the suction port to filter out contaminants contained in the refrigerant being sucked into the casing. The filter member has a cylindrical shape with a bottom. A peripheral portion of the filter member adjacent to an opening of the filter member is fixed to the suction port. The bottom of the filter member is fixed to the low-pressure-side bearing holder.

Abstract: A spiral compressor may include a stationary first spiral member and an orbiting second spiral member intermeshing with the first spiral member. The spiral compressor may include a pendulum slide mechanism that may have an inner ring and a stationary outer ring connected to the inner ring via a plurality of pendulums. The pendulum slide mechanism may include an eccentric member disposed on a radial inside of the inner ring with respect to a central access of the inner ring. The inner ring on an inner circumferential side may be drivingly connected to the eccentric member and on an outer circumferential side may be rigidly connected to the second spiral member. The second spiral member may transmit an orbiting motion in relation to the first spiral member via the pendulum slide mechanism when the eccentric member is driven.

Abstract: Wind turbine blade comprising at least one deformable trailing edge section having a plurality of actuators consecutively arranged substantially downstream from one another and a control system for controlling the actuators, wherein a downstream end of one actuator is connected by a substantially rigid link with an upstream end of the next actuator and the plurality of actuators comprises an upper actuator being mounted above a chord line of the blade section and a lower actuator being mounted below a chord line of the blade section. Wind turbines comprising such a blade and methods of controlling loads on a wind turbine blade are also described.

Abstract: A variable flow external rotor hydraulic machine (10, 10?) has an inlet (26, 26?) an outlet (28, 28?), a rotor set having a first rotor (58, 58?) mounted for rotation about a first rotor axis and a second rotor (68, 68?) mounted for rotation about a second rotor axis, the machine being configured as either a pump or a motor, in which at least one of the first and second rotor axes is movable relative to the other to vary a leakage flow between the rotors.

Abstract: A Stirling cycle machine. The machine includes at least one rocking drive mechanism which includes: a rocking beam having a rocker pivot, at least one cylinder and at least one piston. The piston is housed within a respective cylinder and is capable of substantially linearly reciprocating within the respective cylinder. Also, the drive mechanism includes at least one coupling assembly having a proximal end and a distal end. The proximal end is connected to the piston and the distal end is connected to the rocking beam by an end pivot. The linear motion of the piston is converted to rotary motion of the rocking beam. Also, a crankcase housing the rocking beam and housing a first portion of the coupling assembly is included. A crankshaft coupled to the rocking beam by way of a connecting rod is also included. The rotary motion of the rocking beam is transferred to the crankshaft.

Abstract: A two stage pump (2?, 4?), where the high pressure stage (4?) is a gear pump (11, 12), comprises a driving of the other stage (2?) by a support shaft (74), mounted in the driven pinion (12), the shaft (74) being driven by the drive shaft (21), by means of a pair of toothed wheels (77, 79) adjacent to the rest of the stage (4?), which can allow different rotation speeds between the two stages (2?, 4?). The support shaft (74) may be supported by stops and hydrodynamic bearings, directly integrated and lubricated in the driven pinion, which make the design lighter and more compact. The shaft (74) and the toothed wheels (77, 79) ingeniously transmit the loads from the stage (2?) to the stage (4?) in such a way as to cancel out the usual hydraulic loads, stemming from pressure, and mechanical, forces stemming from rotational drivings on the driven pinion (12).

Abstract: The present invention provides a method for lubricating an expansion machine, which method comprises: supplying of an operating medium which contains a lubricant by a vaporizer; separating of at least part of the lubricant from the operating medium which contains a lubricant and is supplied by the vaporizer; and supplying of the operating medium, which is depleted by the separation of the at least one part of the lubricant from the lubricant, to the expansion machine. Furthermore, a device is provided having a vaporizer which is configured for vaporizing an operating medium which contains a lubricant and for supplying it to an expansion machine, and having a lubricant separating device which is configured for separating at least one part of the lubricant from the operating medium which contains the lubricant and is supplied by the vaporizer to the expansion machine.

Abstract: The invention relates to a pumped storage power plant (1) comprising at least one lower storage space (11) that is arranged underground and at least one upper storage space (12) that is separate from the lower storage space and arranged above ground or underground, wherein the lower storage space (11) is arranged in a greater depth than the upper storage space (12), and comprising at least one liquid line (15, 16) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to at least one hydraulic force and/or work machine (26, 27) of the pumped storage plant or can be connected via switchable valves (28, 29), and comprising at least one pressurized gas line (17, 18) that is/are guided within the upper storage space (12) and within the lower storage space (11) respectively and that is/are connected to a pressurized gas force and/or work machine (21, 22) of the pumped storage power plant or can be connected via switchable valves (24, 25

Abstract: Systems and methods axe disclosed herein that generally involve a double pinch criterion for optimization of regenerative Rankine cycles. In some embodiments, operating variables such as bleed extraction pressure and bleed flow rate are selected such that a double pinch is obtained in a feedwater heater, thereby improving the efficiency of the Rankine cycle. In particular, a first pinch point is obtained at the onset of condensation of the bleed and a second pinch point is obtained at the exit of the bleed from the feedwater heater. The minimal approach temperature at the first pinch point can be approximately equal to the minimal approach temperature at the second pinch point. Systems that employ regenerative Rankine cycles, methods of operating such systems, and methods of optimizing the operation of such systems are disclosed herein in connection with the double pinch criterion.

Abstract: An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.

Abstract: Provided is an inexpensive and simple solar power system. A solar power system according to the present invention includes: a heat collection apparatus (2, 4); a steam turbine (5), a power generator (16); a superheated steam supply line which supplies the steam turbine with superheated steam generated by the heat collection apparatus; a water supply line which condenses the steam expelled from the steam turbine into water and supplies the condensed water to the heat collection apparatus; a heat storage device (8) which has a heat storage medium; a first line which branches from the superheated steam supply line and which supplies the heat storage device with the superheated steam flowing through the superheated steam supply line; a second line which branches from the water supply line and which supplies the heat storage device with the water flowing through the water supply line; and a third line which supplies the steam turbine with superheated steam generated by the heat storage device.