32 results about "Solar power tower" patented technology

A suction-recirculation device for stabilizing the flow of a curtain of blackened heat absorption particles falling inside of a solar receiver with an open aperture. The curtain of particles absorbs the concentrated heat from a solar mirror array reflected up to the receiver on a solar power tower. External winds entering the receiver at an oblique angle can destabilize the particle curtain and eject particles. A fan and ductwork is located behind the back wall of the receiver and sucks air out through an array of small holes in the back wall. Any entrained particles are separated out by a conventional cyclone device. Then, the air is recirculated back to the top of the receiver by injecting the recycled air through an array of small holes in the receiver's ceiling and upper aperture front wall. Since internal air is recirculated, heat losses are minimized and high receiver efficiency is maintained. Suction-recirculation velocities in the range of 1-5 m / s are sufficient to stabilize the particle curtain against external wind speeds in excess of 10 m / s.

An oil recovery system and method is disclosed. The system includes a solar power tower for receiving a first portion of water from a water treatment device. The solar power tower heats the first portion of water directly using solar radiation and generates a first steam. Further, the system includes a boiler for receiving a second portion of water from the water treatment device. The boiler heats the second portion of water and generates a second steam. Further, the system includes a flow control device coupled to the solar power tower and the boiler to receive at least one of the first steam and the second steam. The flow control device injects at least one of the first steam and the second steam to an oil field.

The invention relates to a solar tower-typed high temperature-focusing heat-collecting steam boiler-steam turbine generating device; the device arranges solar heat-collecting units with the number of n on the ground around a tall tower; each solar heat-collecting unit consists of a plane reflector, a solar tracing sensor and a control mechanism thereof, traces the sun and reflects the sunshine of different positions to the focus position of the top of the tower, namely around the solar steam boiler; the solar steam boiler is heated to generate pressure steam to drive the steam turbine to rotate for driving the generator to generate alternating current which is used on-line after the transformation by a transformer.

The invention provides a solar energy high temperature storage type thermal power generation method and device. The solar energy high temperature storage type thermal power generation device comprises a solar energy tower thermal collection module I, a high temperature phase change thermal storage module II, a thermoelectric conversion module III and a photovoltaic power generation module IV. A solar energy photovoltaic power generation system directly changes the solar energy to electrical energy; a solar thermal power generation absorbs the solar energy through the solar energy tower thermal collection module I under the enough sunshine, the absorbed solar energy passes through the heat transferring media in the form of heat, one part of the solar energy is transmitted to the phase change thermal storage module II, the heat storage material of the phase change thermal storage module II is heated to perform phase change so as to store the heat, the other part the solar energy passes through the thermoelectric conversion module III to directly change the heat energy to the electrical energy; when the sunshine is not enough, the heat storage material releases heat to be as the heat source of the thermoelectric conversion module III. The power generation method of the invention used as a new energy and renewable energy development technology with huge development potentiality, adopts thermal storage technology to ensure effective use and provide time delay so as to transform a part of peak loads of the day to valley loads of the night.

A solar power tower solar receiver absorber including: an enclosure; at least one panel configured to be illuminated by solar flux; a core made of at least one material with heat conductivity at least partially encompassed by the enclosure; and a plurality of tubes passing through the core and extending substantially in a parallel direction with respect to the panel configured to be illuminated. The tube is configured for circulation of a fluid to be heated, for example a gas for operating a gas turbine.

An embodiment of the present invention may take the form of a system and method that may use at least one solar heating system to heat the fuel consumed by a turbomachine. An embodiment of the present invention may incorporate concentrated solar power (CSP). Generally, CSP systems incorporate a plurality of lenses, mirrors, or combinations thereof and a tracking system to focus a large area of sunlight forming a small concentrated beam of light. The concentrated light may then be used as a heat source. In an embodiment of the present invention, the heat source may be used to partially or completely heat the fuel consumed by a turbomachine. CSP systems may take the form of a solar trough system, a parabolic dish system, a solar power tower system, or the like.

The invention discloses a solar seawater desalination system and method, and relates to the field of seawater desalination. The system comprises a seawater storage tank, a solar light gathering cover,a fresh water storage tank, a seawater spraying and exhausting device, a heat gathering and conducting device, a fresh water collecting tank, an annular condenser, a solar reflecting mirror, a freshwater spraying condenser, a solar power generation system and a solar tower type seawater concentration and crystallization system. A plurality of layers of heat gathering units such as a solar reflecting mirror, a solar light gathering cover and the heat gathering and conducting device are adopted, seawater in the solar light gathering cover is rapidly heated to form saturated steam; the seawaterspraying and exhausting device is used for increasing the evaporation speed and evaporation capacity of seawater, steam is condensed into fresh water in an omnibearing mode through multiple condensers such as a solar light gathering cover, an annular condenser and a fresh water jet condenser, the seawater evaporation capacity is increased through the solar tower type seawater concentration and crystallization system, and the desalination efficiency is improved. Solar energy is utilized, external energy is not needed, more energy is saved, and the system has the advantages of novel process, simple structure, high desalination rate, low operation cost and the like.

A solar thermodynamic machine power generation method can use the radiant energy of the solar concentrator, and directly convert the internal energy of the working medium molecule with cyclic phase transformation at low boiling point into electric energy for achieving the fuel-free large-scale electric power production. It has the characteristics of long-term continuous operation, green environmental protection, safety and reliability and low cost, and has a great application and social economic value. It makes use of the internal energy exchanging of the working medium molecule. It working process is thermal cycling balance. The present invention can be long-term continuously operated without the external power and does not consume any fuel and water. It is especially suitably applied to the solar tower-type and other light-gathering and thermal storage power generation systems.

An oil recovery system and method are disclosed. The system includes a solar power tower for receiving a first portion of water from a water treatment device. The solar power tower heats the first portion of water directly using solar radiation and generates a first steam. Further, the system includes a boiler for receiving a second portion of water from the water treatment device. The boiler heats the second portion of water and generates a second steam. Further, the system includes a flow control device coupled to the solar power tower and the boiler to receive at least one of the first steam and the second steam. The flow control device injects at least one of the first steam and the second steam to an oil field.

The invention discloses a heliostat field optimization scheduling control method for a solar tower type photo-thermal power station. The method comprises the following steps: establishing a frameworkof a solar tower type photo-thermal power station model; establishing a modeling process of heliostat field condensation and optimal scheduling control of a solar tower type photo-thermal power station; establishing a mathematical model of a spliced reflecting surface; establishing a specular reflection point and a sunlight cone model; establishing a direction and position model of a main incidentlight; utilizing a coordinate transformation method to establish a direction and position model of reflected light; establishing a heliostat sun tracking motion model, counting the number of light rays at different drop point positions, and calculating energy flux density distribution; establishing a tracking error model of the heliostat, and simulating an energy flux density distribution condition when a tracking error exists; establishing an optimal scheduling control model of a heliostat field; solving by using a genetic algorithm to obtain an optimized scheduling control strategy. the method can accurately simulate heliostat field condensation characteristics and energy flux density distribution on the surface of a heat absorber, and can also homogenize the energy flux density on thesurface of the heat absorber.

An embodiment of the present invention may take the form of a system and method that may use at least at least one solar heating system to heat the feedwater consumed by a boiler. An embodiment of the present invention may incorporate concentrated solar power (CSP). Generally, CSP systems incorporate a plurality of lenses, mirrors, or combinations thereof and a tracking system to focus a large area of sunlight forming a small concentrated beam of light. The concentrated light may then be used as a heat source. In an embodiment of the present invention, the heat source may be used to partially or completely heat the feedwater consumed by a boiler. CSP systems may take the form of a solar trough system, a parabolic dish system, a solar power tower system, or the like.

The invention provides a tower type solar concentrator system and a light concentrating method. The system comprises a heat collecting tower and a heliostat array. The heliostat array comprises n large groups of heliostats that are arranged in polar axes each having the center of the heat collecting tower as a pole thereof. The tower type solar concentrator system has the following advantages: (1) the heliostats are divided into groups for transmission and control by group, and therefore, the number of heliostat driving mechanisms and the number of controllers are reduced and then the production costs are reduced; (2) by grouping, the direction angles of the respective heliostats in the same group are controlled synchronously with a corresponding rotator driving mechanism, and the pitch angles of the respective heliostats in the same group are controlled synchronously with the corresponding heliostat driving mechanism; thus, errors in controlling the heliostats are reduced, and the light concentration accuracy and the heat collection efficiency are improved; (3) rotators and small groups of heliostats are controlled with independent driving mechanisms, so that the azimuth angles and pitch angles of the respective heliostats in the same small group of heliostats can be adjusted simultaneously; thus, the accuracy of adjustment is improved and the workload of adjustment is reduced.

The invention discloses a terrestrial heat-solar energy power generating system based on a sCO2 brayton cycle. The system comprises the SCO2 brayton cycle, a CO2 plume terrestrial heat system and a tower type solar energy system used as an auxiliary heat source. The sCO2 brayton cycle comprises a turbine, a high-temperature regenerator, a low-temperature regenerator, a cooler, a main compressor and a re-compressor. The CO2 plume terrestrial heat system comprises an injection well, a production well and a separator. The tower type solar energy system comprises a solar energy tower, a heliostatfield, an absorber, a high-temperature molten salt tank, a low-temperature molten salt tank, a heat exchanger, a molten salt pump and the like. According to the power generating system, through coupling of the sCO2 re-compression brayton cycle, the CO2 plume terrestrial heat system and the tower type solar energy system, a CO2 sealing system and a terrestrial heat exploitation system are combined,meanwhile, the utilization rate and the cycle heat efficiency of medium-low-temperature terrestrial heat resources are improved, and the cost of terrestrial heat exploitation is reduced.

Air heat energy is derived from solar energy, and is a renewable energy source which is inexhaustible. According to the invention, a specific system structure is designed to achieve low-cost and uninterrupted air heat energy power generation. The system is composed of a downdraught tower (1), a high pressure nozzle (2), a cooling medium conveyer pipe (3), a turbine generator set (4) and a residual liquid outlet (5). During the power generation process, the downdraught tower spurts the cooling medium and makes the cooling medium be vaporized, air in the downdraught tower is cooled, and downdraught is obtained in the downdraught tower to promote an engine to generate power. Compared with a solar energy tower power generation method in foreign countries, the air heat energy power generation method is advantaged in that the cost is low, land is saved, and the air heat energy power generation method is not limited by sunset, and is more environmentally-friendly, and is higher in installed capacity and the like.

A central receiver for a solar power facility is provided comprising an arrangement of heat absorber tubes located in a chamber having a window that, in use, is to receive solar radiation reflected by a heliostat field. The heat absorber tubes extend transversely relative to the window and are connected into a working fluid circuit. The window forms an atmospheric air inlet and the chamber has an outlet in a region opposite the window. An air flow promoting fan induces a flow of atmospheric air inwards through the window, past the absorber tubes; and through the outlet. The receiver preferably includes multiple rows of unpressurized louvers or panes having oblique frontal surfaces such that reflected rays travel into the chamber and provide a leading row in which the temperature of the louvers is, under operating conditions, maintained at a level low enough to reduce thermal reflection and radiation losses.

An embodiment of the present invention may take the form of a system and method that may use at least at least one solar heating system to heat the feedwater consumed by a boiler. An embodiment of the present invention may incorporate concentrated solar power (CSP). Generally, CSP systems incorporate a plurality of lenses, mirrors, or combinations thereof and a tracking system to focus a large area of sunlight forming a small concentrated beam of light. The concentrated light may then be used as a heat source. In an embodiment of the present invention, the heat source may be used to partially or completely heat the feedwater consumed by a boiler. CSP systems may take the form of a solar trough system, a parabolic dish system, a solar power tower system, or the like.

The invention discloses a heliostat calibration system and a calibration method for a tower solar power generation system. The drive motor of the heliostat is controlled to rotate according to a predetermined path through a first control unit, so that the reflected light spot of the heliostat falls into the acquisition of an image sensor. Within the range, after the image sensor collects the reflected light spot image, the second control unit coordinates the first control unit to fine-tune the attitude of the heliostat according to the reflected light spot image obtained by the image sensor, so that the reflected light spot is located at the designated position of the heliostat, and Record the attitude information of the heliostat at this time. Combined with the absolute position information of the image sensor and the sun angle to calibrate the heliostat motion model, the calibration accuracy is high, the system error is small, the calibration speed is fast, and the system operation cost is low.

The invention provides an automatic-control efficient solar power tower, which comprises a support device, a main tower pole arranged in an accessory device, a lower support ring, a lower bracket, a middle support ring, a middle bracket, an upper support ring, an upper bracket, a lightning rod, a photovoltaic panel, a power storage column and an automatic controller. The main tower pole is arranged at the center of the support device. The outer side of the lower support ring is connected with the inner side of the lower end of the lower bracket. The upper end of the lower bracket is connected with the lower end of the middle bracket. The outer side of the middle support ring is connected with the inner side of the lower end of the middle bracket. The upper end of the middle bracket is connected with the lower end of the upper bracket. The outer side of the upper support ring is connected with the inner side of the lower end of the upper bracket. The upper end of the upper bracket is connected with a fixed ring at the lower end of the lightning rod. The lightning rod is arranged at the upper end of the upper bracket. The photovoltaic panel is arranged on the outer side of the lower bracket, the middle bracket and the upper bracket. The power storage column is arranged on the outer side of the upper section, the middle section and the lower section of the main tower pole. The automatic controller is arranged on the inner side of the bottom of the main tower pole. The automatic-control efficient solar power tower is superior in structural performance, wherein the field, the space, the solar energy and the light energy are fully utilized. Moreover, the automatic-control efficient solar power tower is multiple in function, wide in application range, high in efficiency, energy-saving, environment-friendly, low in manufacturing cost, and extremely remarkable in popularization and application comprehensive benefit.

A solar power tower solar receiver absorber including: an enclosure; at least one panel configured to be illuminated by solar flux; a core made of at least one material with heat conductivity at least partially encompassed by the enclosure; and a plurality of tubes passing through the core and extending substantially in a parallel direction with respect to the panel configured to be illuminated. The tube is configured for circulation of a fluid to be heated, for example a gas for operating a gas turbine.

A method for calculating the light-converging energy flow density distribution of the lighting surface of a solar tower power generation heat absorber. For a heat absorber corresponding to a heliostat field arranged on one side, the lighting surface of the heat absorber is divided into a rectangular grid to form a rectangular grid. Plane mesh or cylindrical mesh, and determine the "Tian"-shaped grid boundary of the lighting surface at the same time; use the reverse ray tracing method to calculate the concentration of the heliostat field on the boundary of the "Tian"-shaped mesh of the heat absorber lighting surface. Light energy flux density value; expand the grid of the heat absorber lighting surface into an X-Y plane grid, and use the calculated value of the concentrated light energy flux density on the boundary of the "field"-shaped grid to interpolate and reconstruct all the heat absorber lighting surface. Energy flux density values ​​at grid points. For the circumferentially arranged heliostat field, for each cylindrical lighting surface sub-area, the energy flux density value on the boundary of the "field"-shaped grid can be calculated first, and then the concentrated light energy on the corresponding lighting surface sub-area can be reconstructed by interpolation. Flow density distribution.

The invention discloses an energy-gathering efficient single-tower multi-disc type solar concentrating power generation device in the technical field of solar concentrating power generation. A lower rail is fixedly arranged at the top of a fixed base; lower racks are fixedly arranged on the front side and the rear side of the top of the lower rail; the output ends of two sets of first double-shaft motors are fixedly connected with gears meshed with the two sets of lower racks; a connecting base is movably assembled at the tops of the first double-shaft motors; upper racks matched with the gears are fixedly arranged on the front side and the rear side of the bottom of the connecting base; an upper rail is fixedly arranged at the top of the connecting base; and a solar tower is fixedly arranged at the center of the top of the upper rail, the solar tower at the top of the upper rail can be driven to rotate, and therefore the azimuth angle of a solar collecting lens can be changed, the solar collecting lens can be adjusted along with the sun irradiation angle, the radiation area of the solar collecting lens to sunlight is increased, and the absorption efficiency of the sunlight is improved.

The invention relates to an asymmetric solar receiver suitable for its installation in heliostat tower solar power plants, wherein said receiver is adapted to cover at least an angular region of around a tower, and wherein the effective surface density of the receiver for receiving radiation varies depending on its orientation over the covered angular region thereof. The effective surface of said receiver is preferably made of one or more panels and, more preferably, the receiver comprises at least two panels, wherein at least one of the panels comprises a smaller height than the other panels. The invention also relates to a solar tower comprising said receiver, a solar field comprising said tower, a solar power plant comprising said solar field, and a process for installing a solar field.

An air receiver for use in a solar power plant receives sunlight from a plurality of heliostats focused on the air receiver via an aperture of the receiver to heat air in the cavity of the receiver. The heated air is directed out of the receiver via one or more output ports in fluid communication with the cavity. A solar power tower can include one or more receivers (e.g., oriented in different directions) and have outflow conduit(s) in fluid communication with the output ports. The outflow conduit(s) receive heated air from the one or more receivers and direct it toward one or both of a hot thermal storage tank and a heat utilization module (e.g., for use in generating electricity or facilitating an industrial process, such as a chemical reaction).

The invention provides a solar tower-type thermal power generation special-shaped heliostat which comprises a heliostat unit reflector (1), longitudinal supports, a column (5) and a transmission box (6). The transmission box (6) is arranged on the upper flange of the column (5). Two sides of the transmission box (6) are provided with a horizontal shaft respectively. Two first longitudinal supports (4) are respectively arranged on left and right horizontal shafts (6), and are bilaterally symmetrical along the horizontal rotation center of the heliostat on one side close to the transmission box (6). Two second longitudinal supports (3) are respectively arranged on left and right horizontal shafts, are close to the first longitudinal supports (4), and are bilaterally symmetrical along the horizontal rotation center of the heliostat on the outer side of the first longitudinal supports (4). The third longitudinal support (2) and the fourth longitudinal support (8) are symmetrically arranged on the outermost sides of left and right horizontal shafts, and are bilaterally symmetrical along the horizontal rotation center of the heliostat. The outer contour of a truss formed by all longitudinal supports is an isosceles triangle. The heliostat unit reflector (1) is arranged on the truss formed by all longitudinal supports.

The invention relates to a heat accumulation and exchange integrated tower-type solar power generation system which comprises a heliostat field, a saturated water heat absorber, a water heat accumulator, a superheated heat absorber, a heat accumulation / heat exchange device, a steam turbine, a generator set, a condenser, a condensate pump, a deaerator, a water feed pump and a plurality of block valves. The first block valve is arranged between the saturated water heat absorber and the water heat accumulator, the second block valve is arranged between the water heat accumulator and the superheated heat absorber, the third block valve is arranged between the superheated heat absorber and the heat accumulation / heat exchange device, and the fourth block valve is arranged between the water heat accumulator and the heat accumulation / heat exchange device. Under the state that solar rays are sufficient, the first block valve, the second block valve and the third block valve are opened, the fourth block valve is closed, superheated steam is buffered through the heat accumulation / heat exchange device, and heat is accumulated through the heat accumulation / heat exchange device. Under the state that the solar rays are insufficient, the first block valve, the second block valve and the third block valve are closed, the fourth block valve is opened, and heat exchange is carried out on saturated steam through the heat accumulation / heat exchange device to form the superheated steam.

A solar power plant for generating steam is comprised of a spherical shell, the interior of which is sealed from the outside atmosphere and which is mounted adjacent the top of a vertical tower. A plurality of heliostats surrounds the tower and the direct sunrays onto the sphere for heating the same sphere. A spray nozzle within the sphere directs water supplied to it from an external source onto the interior surface of the sphere to create steam. The steam is withdrawn and directed to a turbine or the like for generating electricity. A motor rotates the sphere about its vertical axis thereby regularly exposing a different portion of the sphere to the heliostats to prevent the sphere from melting.

The invention relates to a solar power system using concentrated solar power technology. The system includes a solar power generator which includes four solar panels, a base seat and a first driving apparatus which is vertically mounted on the base seat. The solar panels are provided with a second driving apparatus thereon. The first driving apparatus is in transmission connection with the solar panels through the second driving apparatus. The first driving apparatus includes a first driving motor which is vertically arranged, a first driving shaft which is in transmission connection with the first driving motor, and a first connection shaft. The system conducts rough adjustment on the solar generator via the first driving apparatus and at the same time conducts fine adjustment on each solar panel via the second driving apparatus, so that accuracy of adjusting solar energy is increased. In addition, since an integrated circuit in a motor drive circuit has the advantage of high voltage resistance, driving capacity and reliability of the motor driving is increased.