30results about "From solar energy" patented technology

To provide a nuclear power plant and a method for generating power in a nuclear power plant which can improve the load following property of a nuclear power generation plant and can further stabilize the output of a nuclear reactor.SOLUTION: The nuclear power plant having a nuclear reactor includes: an output control unit 70 for controlling the opening degree of an air extraction valve 13 according to a load request; and an energy storage unit for storing renewable energy. The output control unit 70 controls the temperature of water to supply to the nuclear reactor on the basis of the opening degree of the air extraction valve 13 and the amount of stored energy in the energy storage unit.SELECTED DRAWING: Figure 1

The invention relates to a photo-thermal coupling terrestrial heat power generation device. The photo-thermal coupling terrestrial heat power generation device comprises a photo-thermal assembly, a power generation assembly coupled with the photo-thermal assembly through a first heat exchanger and a terrestrial heat assembly coupled with the photo-thermal assembly through a second heat exchanger. The geothermal assembly comprises a sleeve inserted into the target stratum and a heat insulation pipe arranged in the sleeve, and an annular space communicated with the power generation assembly is formed between the sleeve and the heat insulation pipe. Wherein the photo-thermal assembly is constructed to be capable of transmitting heat to the power generation assembly and the geothermal assembly through the first heat exchanger and the second heat exchanger respectively, so that the geothermal assembly conveys a heated heat-conducting medium to a target stratum through an annulus; therefore, the geothermal assembly can convey the heat-conducting medium at the target stratum to the power generation assembly when the heat transferred to the power generation assembly by the photo-thermal assembly is smaller than the heat required by the power generation assembly. Therefore, an underground aquifer or other geological structures can be used as an energy storage medium, the energy storage period is prolonged, the operation cost is reduced, and the continuity and stability of power generation are effectively improved.

The application discloses a kind of power generation systems based on friction nanogenerator, including photo-thermal power generation system, heat storage system and friction nanogenerator component.This system is a kind of comprehensive power generation system that TENG wind power generation system is combined with photo-thermal power generation system, the application will large-area TENG power generation system be arranged in solar photo-thermal power station reflector back with array distribution, saves the support part investment of TENG power generation system.Meanwhile, the electric energy of TENG power generation is directly converted into heat energy storage and is stored in the molten salt energy storage system matched with photo-thermal, realizes the energy storage function of wind power generation, and does not need to increase energy storage investment, saves the investment of downstream power transmission and transformation equipment, inverter and other equipment equipped with TENG power generation system, finally, due to the energy storage of TENG power generation system contribution, mirror field area of photo-thermal power generation system can be reduced, and the investment of photo-thermal power station itself will be reduced.

Systems related to concentrated solar combination heating and power generation; solar heating; industrial heat driven power generation; thermal storage systems and heat exchanger and power generation systems therefore, including any of the above with optional supplemental fuel production, and associated methods, are generally described.

The application discloses a solar cross-season soil energy storage heating and power generation integrated system based on an expansion compressor, and the system comprises a working medium pump, a solar collector, an evaporator, an expansion compressor, a permanent magnet motor, a condenser and a buried pipe. In the power generation mode, the working medium pump is opened; heat generated by the solar collector enters the evaporator to evaporate liquid refrigerant; gaseous refrigerant drives the expansion compressor to work and drives the permanent magnet motor to generate electricity; gaseous refrigerant after work enters the condenser to exchange heat with circulating water in the buried pipe and is condensed; heat not converted into electric energy is stored in the soil through the buried pipe; and liquid refrigerant after condensation is pumped back to the evaporator by the working medium pump. In the heating mode, the permanent magnet motor is electrified and drives the expansion compressor; heat generated by the solar collector and soil heat extracted by the buried pipe jointly enter the evaporator to evaporate liquid refrigerant; gaseous refrigerant is compressed into high-temperature gaseous refrigerant by the expansion compressor and then enters the condenser to exchange heat with a user end heating pipe network and is condensed; and liquid refrigerant after condensation flows into the evaporator after pressure reduction by an expansion valve.

This invention discloses a system and method for improving the output of a linear Fresnel molten salt solar thermal power plant, comprising a low-temperature molten salt tank, a high-temperature molten salt tank, a medium-temperature molten salt buffer tank, a linear Fresnel solar collector field, a low-temperature temperature regulating pump, a medium-temperature temperature regulating pump, a low-temperature molten salt pump, and a high-temperature molten salt pump. During the power plant startup or low-irradiation phase, the medium-temperature molten salt at the collector field outlet that has not reached the target temperature is temporarily stored in the medium-temperature molten salt buffer tank to prevent the medium-temperature molten salt from mixing into the high-temperature molten salt tank and causing a decline in the quality of the high-temperature molten salt. During the high-irradiation phase, the qualified high-temperature molten salt is introduced into the high-temperature molten salt tank. Simultaneously, the medium-temperature molten salt in the buffer tank is mixed with the low-temperature molten salt from the low-temperature molten salt tank according to a calculated ratio, and after temperature adjustment, it is pumped back into the collector field for secondary heating to reach the qualified high-temperature molten salt. This ensures that high-quality superheated steam is provided to the turbine during peak irradiation periods, ultimately improving the annual power generation of the power plant, especially the unit's operating rate and output level in winter.

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.

The solar thermal power generation system includes a thermal energy storage container containing a thermal mass composition capable of storing thermal energy, a solar energy collection system, and a power generation system. The collection system comprises a first closed-flow loop including a solar thermal collector that absorbs solar energy to heat a first working fluid. The heated first working fluid is recirculated through the first closed-flow loop to heat the thermal mass composition. The power generation system consists of a second closed-flow loop including a turbine generator. The second closed-flow loop recirculates the second working fluid through the thermal mass composition, absorbing thermal energy to heat the second working fluid, which is then fed to a turbine to generate electricity in the generator. The second working fluid is water / steam or a compressible gas. The thermal mass composition consists of a mixture of a phase-change material, such as a salt, and a metallic material.

This invention discloses a distributed energy supply system integrating solar-assisted chemical loop reforming and a fuel cell, comprising a solar-assisted chemical loop reforming subsystem, a proton exchange membrane fuel cell subsystem, a chemical loop combustion subsystem, an absorption refrigeration subsystem, and a thermal energy storage subsystem. The system utilizes a concentrating photovoltaic (PV) thermal collector to capture solar energy, preheat the fuel, and generate electricity. The preheated fuel undergoes chemical loop reforming to produce hydrogen-rich reformed gas, which is then supplied to the fuel cell for efficient power generation. The fuel cell anode exhaust gas enters the fuel reactor of the chemical loop combustion subsystem, where lattice oxygen is provided by an oxygen carrier to achieve nitrogen-free dilution oxidation, generating product gas mainly composed of CO2 and H2O. The product gas is cooled, condensed, and dehydrated before being output with CO2 enrichment, and can optionally enter a buffer tank / compression unit. The system recovers waste heat from the fuel cell and the high-temperature flue gas from chemical loop combustion through a closed-loop heat transfer oil system, storing the waste heat in high- and low-temperature heat transfer oil tanks to provide a stable heat source for absorption refrigeration.

The application provides a solar and biogas driven SOFC poly-generation system and method, a heat storage tank of a trough type solar heat collector is communicated with a first heat exchanger in an organic Rankine cycle module, so that working medium in the heat storage tank heats working medium in the organic Rankine cycle module; the first heat exchanger is communicated with a second heat exchanger in an anaerobic digestion module, so that low-temperature working medium drives an anaerobic reaction tank, the second heat exchanger is communicated with a liquid storage tank of the trough type solar heat collector; a CH4 storage tank of the anaerobic digestion module is communicated with a fuel compressor of an SOFC module, and an exhaust gas output pipeline of the SOFC module is communicated with a regenerative steam generator of a Kalina cycle module, so that exhaust gas of the SOFC module drives the Kalina cycle module to generate power; the application couples PTSC with ORC, anaerobic digestion, SOFC and KC, realizes heat and power cogeneration, realizes the renewable nature of input end energy, guarantees high poly-generation efficiency and power generation efficiency, and has the effect of energy saving and consumption reduction.

A system for converting solar energy into electrical energy, comprising a water circuit; an electric heater that increases the temperature of the water in said circuit; a device for converting solar energy into thermal energy of water; a steam generator that converts the thermal energy of water into electrical energy; a converter of said electrical energy; an accumulator; and generators; characterized in that, under conditions of insufficient solar energy, the energy stored in said accumulator is converted by said generators, and this ensures uninterrupted generation of electrical energy both under conditions of sufficient sunlight and under conditions of insufficient sunlight, as well as in the absence of sunlight.

The invention provides a hybrid energy system based on tower type solar energy and solid oxygen fuel cell composite power generation and waste heat multi-effect distillation saline-alkaline water desalination, and relates to the technical field of composite power generation. The hybrid energy system comprises a tower type solar power generation module, a solid oxygen fuel cell module, a regenerative turbine power generation module and a saline-alkaline water desalination module utilizing waste heat. Tower type solar energy and a solid oxygen fuel cell are combined for power generation, and high-grade waste heat generated in the solid oxygen fuel cell power generation process and the tower type solar energy power generation process is efficiently recycled to drive a turbine generator to generate power and desalinate saline and alkaline water. The system promotes the upgrading of solar power plants in regions with rich solar resources and underground water mainly including saline-alkali water and away from islands, meets the fresh water supply required by local production and life, avoids resource waste, further improves the power generation efficiency, and is more energy-saving and environment-friendly.

A solar collector includes a conduit for a working fluid and a parabolic trough reflector arranged to focus reflected sunlight onto the conduit. The parabolic trough reflector is arranged to pivot around the conduit.

An interior space climate control system featuring a temperature differential engine, with the temperature differential engine configured to exploit the temperature differential of at least two sources with different temperatures. The fluids may be used to provide additional benefits to an interior space, such as heating, hot water, cooling, and refrigeration, and unused climate control fluids may in turn be used as sources of fluids with temperature differentials.

The application belongs to the technical field of high-temperature alloy materials, and discloses a nickel-based wrought high-temperature alloy with molten salt corrosion resistance and high-temperature oxidation performance, and preparation and application thereof. The alloy comprises, based on the total weight of the alloy, Nb 2.0-5.0%, W 23.0-29.0%, Mn 0.4-0.8%, Si 0.1-0.6%, C 0.02-0.06%, Mo 0-2.0%, Ti 0-1.2%, Y 0.01-0.05%, Ce 0.1-0.3%, and the rest is Ni. The alloy composition design synergistically improves the molten salt corrosion resistance and high-temperature oxidation performance of the alloy, effectively improves the comprehensive service performance of the alloy, and prolongs the service life of the alloy.

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. 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 conventional lower-temperature heat source to boost the temperature of a thermal power cycle working fluid to a turbine, thereby increasing efficiency of the power cycle.

The invention concerns a hybrid solar power generation system comprising:a set of photovoltaic panels,a first loop circuit containing a heat-carrying fluid able to circulate along the first loop circuit, said first loop circuit defining a first portion for circulation of the fluid in a first temperature range, a second portion adjacent to said photovoltaic panels for thermal exchange between the fluid and said photovoltaic panels and a third portion for circulation of the fluid in a second temperature range, wherein the temperatures of the second temperature range are greater than the temperatures of the first temperature range,a heat pump with a second loop circuit containing a heat-carrying fluid, said second loop circuit passing successively through an evaporator, a compressor, a condenser and a metering device, where the heat source of said evaporator is the heat-carrying fluid present in said third portion of the first loop circuit, anda Stirling engine, where the Stirling engine's heat source derives from heated fluid refrigerant present in a portion of the second loop circuit placed between the compressor, and the metering device.

This invention discloses a hemispherical matrix lens photothermal-electric conversion device, relating to the field of solar energy utilization technology. Specifically, it is a hemispherical matrix lens photothermal-electric conversion device, comprising a matrix lens assembly, a hemispherical support, a high-efficiency spherical photothermal converter, and a steam power generation system. The matrix lens assembly consists of multiple transparent engineering plastic surface dish units filled with pure water and sealed, arranged in a matrix on the hemispherical support, with the focal point of each unit pointing towards the center. The high-efficiency spherical photothermal converter is a copper pot coated with nano-gold crystal paint, located at the center to receive focused light. The steam power generation system includes copper pipes and a steam turbine unit, converting the superheated steam generated by the converter into electrical energy. This device utilizes a water lens to focus sunlight, generating steam power through efficient heat absorption and heat conduction. It has a compact structure and can achieve high-efficiency photothermal-electric conversion.

A portable nuclear power system includes a nuclear reactor. The nuclear reactor includes a core comprising a vessel housing a nuclear fuel that produces radiation, a sleeve of a high temperature moderator material disposed circumferentially about the core, and a neutron screen disposed circumferentially about the sleeve. The portable nuclear power system generates electricity using heat received from the nuclear reactor and has one or more cooling units in thermal communication with the electricity generating unit.

This invention discloses an optimized operation method for a tower solar thermal power system adapted to harsh environments, comprising: establishing a heliostat energy flow prediction model and an optical efficiency prediction model for the reflection of the heliostat field onto the absorber surface under different time periods and environmental conditions; analyzing the optimal steam parameters of the steam power generation device under different time periods based on the digital twin model of the tower solar thermal power system, under the input conditions of grid dispatch command demand and dynamic electricity price signal; establishing a dynamic energy flow allocation model for the molten salt thermal storage device and the absorber based on the predicted energy flow, predicted optical efficiency, and optimal steam parameters under different time periods and environmental conditions, and in combination with the heat storage, heat release, and operating parameters of the molten salt thermal storage device and the absorber, to satisfy the optimal steam parameter values; and establishing a control model for the steam power generation device based on the dynamic energy flow allocation results of the molten salt thermal storage device and the absorber, and in combination with the optimal steam parameter values.

A solar power system, a solar power method and a solar thermal hydraulic motor is provided that is simple and cost-effective, that is able to function at low temperatures and low temperature differentials. The solar power system comprises: a plurality of pressure vessels configured to receive working fluid; a solar collector, configured to heat the working fluid in at least one of the pressure vessels to thereby cause the working fluid to expand in the pressure vessel without changing phase; and a mechanical work element, configured to perform work from expansion of the working fluid in the pressure vessels. At least some of the plurality of pressure vessels are selectively couplable to each other to enable transfer residual energy from one pressure vessel after it has been used to perform work to another pressure vessel to assist in performing work.

This invention discloses a system and method for ensuring the phase state of oil-rich coal pyrolysis products in extraction wells through multi-energy complementary supply. The system includes a parabolic trough solar collector system and an extraction well heating system. The parabolic trough solar collector system includes a parabolic trough collector, a high-temperature molten salt tank, a molten salt pump, and a low-temperature molten salt pump. The extraction well heating system includes a heat exchanger, a gate valve, an expansion valve, a carbon dioxide pump, a compressor, a wind turbine, an auxiliary power supply, and coils. The method includes a method of directly heating the extraction well with carbon dioxide when solar radiation intensity is high, and a method of heating the extraction well with carbon dioxide Brayton cycle by directly driving the compressor with wind power when solar radiation intensity is insufficient. This invention is rationally designed and effectively solves the problem of condensation loss of oil-rich coal pyrolysis products during the extraction process, maintaining the phase state of the pyrolysis products. It has multiple beneficial effects, including improved yield, energy saving and environmental protection, stable operation, and controllable cost.

To provide a power generation device which can prevent steam in a working fluid from flowing into the atmospheric air and avoid complication and the size increase of the device.SOLUTION: A power generation device 1 includes: a sealed storage part 10 in which a working fluid MC is stored and which is hermetically sealed; a heating part 20 for causing the working fluid MC to boil to generate steam; a rotation part 30 which is disposed within the sealed storage part 10 and rotated by steam of the working fluid MC; and a power generation part 40 which converts rotational motion of the rotation part 30 into electric energy. The working fluid MC has a boiling point lower than that of water, and the heating part 20 heats the working fluid MC from the outside of the sealed storage part 10 to boil the working fluid MC.SELECTED DRAWING: Figure 1

The application discloses a heliostat and a method for reducing shading loss in a mirror field of a tower type photo-thermal power station, the heliostat comprising a reflecting mirror, a support and a driver, the reflecting mirror comprising a main reflecting mirror and auxiliary reflecting mirrors located on both sides of the main reflecting mirror, the auxiliary reflecting mirrors and the main reflecting mirror being connected through hinges, the back of the main reflecting mirror being provided with a truss, the truss being connected to the support through the driver, the truss being provided with a fixed end of an electric telescopic rod, the output end of the electric telescopic rod being connected to the back of the auxiliary reflecting mirror, the back of the auxiliary reflecting mirror being fixed with a photosensitive device, and the photosensitive device converting light signals into electric signals and transmitting the electric signals to a control system of the mirror field. According to the method, the heliostat can be automatically adjusted according to the shading condition when the solar elevation angle is very low, so that the shading loss is reduced, the overall optical efficiency of the mirror field is improved, and the heliostat returns to the original state when no shading occurs, so that the light collecting area is effectively increased.

A solar thermodynamic power generator includes: a quartz window placed on a metal shell to form an electromagnetic resonant cavity structure for receiving solar energy; a ceramic conduit placed in the metal shell, wherein a working medium is heated in the ceramic conduit by the solar energy; a heat exchanger placed in a vacuum insulation oil tank; a steam generator placed in the vacuum insulation oil tank; a ceramic heating tube placed in a combustion chamber; and a turbine communicating with the steam generator through a fifth pipeline and a sixth pipeline. The present invention is environmentally friendly, safe, low-cost, high-efficiency, pollution-free, emission-free, and not affected by natural weather or environment. Like natural gas, the present invention can be configured to perform grid-connected power generation. Furthermore, after the hydrogen fuel and the hydrogen silicon fuel are mixed and burned, waste hydrogen can be recycled and reused.

The utility model provides a kind of board building construction layer temporary guarantee service system, including the power supply system being arranged on the main body construction layer to be waited and the service equipment being arranged on the main body construction end layer, and the power supply system includes energy storage and the heliostat being electrically connected with the energy storage, and the energy storage is arranged on the bracket platform being inserted with the main body construction layer to be waited, and the bottom of bracket platform is provided with jack, and jack is inserted and fixed with the cushion block on the main body construction layer to be waited, and service equipment is placed on the ground of the main body construction end layer, and is electrically connected with energy storage, to supply power for the service equipment on the main body construction end layer that has been finished by the power supply system on the main body construction layer to be waited that has not been finished, and can utilize heliostat solar power supply, to utilize green electricity water supply, cooling service facility, provide worry-free healthy construction environment.

A material flow control system. In one embodiment, the flow control system includes an elongated flow control body, the body having an axial passage therethrough, wherein the axial passage is in communication with a heat exchanger and in communication with low temperature storage. Each of a plurality of fingers are received in an opening passing through the flow control body into the axial passage, each opening at an angle to the axial passage, wherein the plurality of fingers together form a nozzle for passage of heat transfer material therethrough. A mechanism actuates movement of each of said plurality of fingers in said elongated flow control body.

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.

The application provides a heat-based power system and a control method thereof. The system comprises a solar heat collector, a steam generator, a steam turbine, a steam storage tank, a condenser, a cooling tower, a heat supply circulating pump, a cooling water circulating pump and a valve. The heat source inlet is connected with the inlet of the solar heat collector; the outlet of the solar heat collector is connected with the inlet of the steam generator; the outlet of the steam generator is connected with the inlet of the steam storage tank; and the outlet of the steam storage tank is connected with the inlet of the steam turbine. The system realizes the step-by-step ordered coupling of heterogeneous energy, thereby improving the quality of medium and low grade heat energy, improving the circulating pressure of the system and the installed capacity of the generator set, and realizing the power generation demand of small parameters and low capacity.