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81 results about "Solar concentrator" patented technology

Solar energy coupled hydrocarbon fuel reforming low-carbon oil displacement system

The invention relates to the technical field of energy, in particular to a solar coupling hydrocarbon fuel reforming low-carbon oil displacement system which comprises a solar collecting lens, a gasification cavity, a reaction cavity, a solar heat collector, a condensation cavity, a hydrogen separation assembly and a catalyst. The solar collecting lens is arranged on one side of the solar heat collector; the gasification cavity and the reaction cavity are arranged in the solar heat collector; a hydrogen separation assembly and a catalyst are arranged in the reaction cavity, the gasification cavity is used for gasifying input excessive liquid water and hydrocarbon fuel to obtain gaseous hydrocarbon fuel and excessive water vapor, the gaseous hydrocarbon fuel and the excessive water vapor are subjected to a water vapor reforming reaction under the action of the catalyst, and generated hydrogen is discharged through the hydrogen separation assembly; the remaining carbon dioxide and water vapor are conveyed into a gas injection well to conduct oil displacement on an oil field; the condensation cavity is connected with the mining well. The efficient and environment-friendly device based on hydrocarbon fuel wet reforming directly heats and displaces oil by recovering hydrogen and residual reaction products, so that the energy utilization rate is increased, and carbon dioxide is recovered.
Owner:UNIV OF CHINESE ACAD OF SCI

Method for measuring three-dimensional space distribution of energy flux density of solar concentrator

The invention provides a method for measuring energy flux density three-dimensional space distribution of a solar concentrator, and belongs to the technical field of solar photo-thermal power generation. Comprising the steps that an energy flux density sensor array of a main-auxiliary column structure is constructed, main columns are symmetrically arranged with the focus of a condenser as the center, and auxiliary column sensors are located at the centers of adjacent sensors of the main columns; the array is driven by a double-shaft guide rail system to perform multi-plane scanning, and CCD images and energy flux density data are synchronously acquired; establishing a mapping relation between the energy flux density data and the space coordinates based on the optical reference points; in-plane data are processed by adopting a thin-plate spline interpolation method, and three-dimensional energy flux density field reconstruction is realized by combining a trilinear interpolation method. The normalized peak energy flux density gradient between adjacent scanning planes is controlled within 40%. According to the invention, data are directly obtained through the energy flow sensor, CCD gray scale conversion errors are avoided, and the energy flow density three-dimensional space distribution characteristics from a focal plane to a discrete region can be completely represented by adopting the dynamically adjustable scanning plane spacing.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Hydraulic drive device for trough solar concentrator

The utility model relates to a kind of slot type solar concentrator hydraulic drive device, including concentrator push-pull oil cylinder and its hydraulic drive system, the oil tank of hydraulic drive system is connected with energy accumulator, concentrator push-pull oil cylinder by motor and pump group unit, high-pressure pipeline, valve control unit, the oil tank is aluminum alloy die-casting oil tank, the aluminum alloy die-casting oil tank upper along with the platform lower surface is sealed, waterproof, dust cover is installed on platform upper portion, platform one side fixed mounting adapter mounting vertical plate, the both sides of waterproof, dust cover are equipped with quick detach buckle, so the connection between dust cover and oil tank is fixed without bolt connection, just press buckle, dust cover can be locked, greatly reduce the work hour amount of disassembly and assembly, improve installation efficiency, save time cost.The utility model is resistant to-40°C low temperature, waterproof and dustproof performance is high, with good protective performance, easy to repair and maintain, can be stable under harsh environment, high precision and high service life.
Owner:AUMAN NEW ENERGY TECH (TIANJIN) CO LTD

Flat internal reflection shutter type solar concentrator with curve distribution mirror field

The invention relates to a flat internal reflection shutter type solar concentrator with a curved distribution mirror field, which comprises a mirror field consisting of a plurality of long-strip-shaped reflector units, a reflector rotating shaft, a reflector angle adjusting mechanism, a side surface supporting plate of the mirror field and a solar receiving component. The mirror field faces the outer side of the building, and the solar energy receiving component faces the interior of the building; the reflector units are installed on the side face supporting plate through independent reflector rotating shafts, and the center points of the reflector rotating shafts are distributed on the side face supporting plate in a curve mode. The reflector angle adjusting mechanism is connected with the reflector rotating shafts and used for driving the reflector units to rotate so as to adjust the reflection angles of the reflector units in real time, and incident sunlight is converged to the solar receiving component after being reflected. Compared with the prior art, the light condensing efficiency is improved, and the optical performance is optimized; light pollution is avoided; the structure is compact.
Owner:TONGJI UNIV

Solar concentrator energy harvesting system

An energy harvesting system is disclosed including a plurality of beams connected to form a structural frame, and a plurality of solar concentrator panels mounted on the structural frame to provide a solar concentrator array for reflecting solar radiation onto a plurality of receiver tubes configured to transport a heat transfer fluid to be heated. The beams are configured to support a mobile manipulator for travel along the structural frame for performing at least one operation on the array. A mirror apparatus used in a solar concentrator panel is also disclosed and includes an elongate thin-walled closed structural beam, and a mirror extending along and mounted to a surface of the closed structural beam in a transversely deformed condition to cause the mirror to have a transverse curvature that is selected to focus the solar radiation onto a receiver tube.
Owner:TERRAJOULE ENERGY INC

Refractive Solar Concentrator With Concentration Ratio To Achieve Specific Irradiance And Temperature Levels In The Target

An example Fresnel lens design has four segments A-D of equal area which can be manufactured from the same mold, before being rotated and assembled in the pattern shown. The segments A-D have flanges, appropriate to facilitate assembly and structural integrity during the lifetime of the lens.
Owner:EXOWATT INC

Shape Memory Design for a Lightweight, Low Stow Volume, Deployable Solar Concentrator

A lightweight, low stow volume solar concentrator / collector may include one or more reflective surfaces comprising a shape memory material. The solar concentrator includes support frame, a support structure coupled to the support frame, and a reflective surface coupled to the support structure. The reflective surface comprises a shape memory material to transition the reflective surface from a flat configuration to a curved configuration.
Owner:LGARDE INC

Scheffler-based solar heating system

System (100) for a solar thermal storage capsule, wherein the system (100) comprises: a Scheffler solar concentrator (102) configured to direct concentrated solar flux onto a container of water; and a heat storage capsule comprising a shell enclosing a removable tube (104) arranged in a cantilever configuration, the removable tube containing a phase-change material (106), wherein heated water from the receiver transfers heat energy to the phase change material (106) to store latent heat during a charging phase, and wherein the removable tube (104) is removable to release the stored heat energy to heat water when no solar energy is available.
Owner:DR VISHWANATH KARAD MIT WORLD PEACE UNIV PUNE

Mn-based metal halide fluorescent solar concentrating device and preparation method thereof

The present invention discloses a Mn-based metal halide fluorescent solar concentrator device and its preparation method. The method first involves mixing benzyltrimethylammonium bromide, MnBr2, and water in an air atmosphere, stirring to clarify, and then filtering. PEO is then added and thoroughly stirred to dissolve to form a precursor solution. Finally, the precursor solution is applied by blade coating followed by spin coating to form a light-absorbing layer. The thickness of the light-absorbing layer is controlled by regulating the spin coating rate. By selecting the appropriate PEO additive, using a hybrid Mn-based metal halide as a precursor, and employing a solution method of blade coating followed by spin coating, the present invention achieves the preparation of a photovoltaic concentrator with high transparency, high light conversion efficiency, and high edge emission efficiency, without the need for organic solvents or external processing.
Owner:NANJING UNIV OF SCI & TECH

Solar concentrator reactor for high temperature thermochemical processes

PendingAU2022227515B2ThermodynamicsReactor system
A solar concentrator reactor system and method of use for high temperature thermochemical processes. In one embodiment, the solar concentrator reactor system produces a thermochemical reaction of irradiated particles within an enclosed vessel volume of a solar concentrator reactor. In one aspect, the solar concentrator reactor system uses a solar concentrator to irradiate particles of a particle stream within an enclosed vessel volume of a solar concentrator reactor. The thermochemical reaction yields a chemical change of the feedstock and / or phase transition of the feedstock such as the production of a molten reacted material from a solid particulate feed. In one embodiment, the particles are a lunar regolith and the thermochemical reaction yields oxygen.
Owner:BLUESHIFT LLC DBA OUTWARD TECH

Optical anisotropic luminous solar concentrator and preparation method thereof

The invention discloses an optical anisotropic luminous solar concentrator and a preparation method thereof, and the optical anisotropic luminous solar concentrator is of a layered structure and is prepared by blade coating a halide perovskite CsPbBr3 nanowire layer on a glass substrate. The layered structure is composed of a glass substrate, an ultraviolet curing adhesive layer and at least two functional layers, and each functional layer is composed of a CsPbBr3 perovskite nanowire-polymethyl methacrylate composite light-emitting film. Under the action of the halide perovskite CsPbBr3 nanowire, the probability that fluorescence emitted by the light-emitting solar concentrator is conducted to the side edge parallel to the substrate can be greatly increased, so that the loss of an escape cone in the direction perpendicular to the substrate is reduced; meanwhile, due to the introduced optical spacing layer, the reabsorption loss of the device can be reduced, the conversion efficiency of the device is improved, the transmittance is relatively good, and the preparation cost is relatively low.
Owner:SOUTHEAST UNIV

Efficient laminated fluorescent solar concentrator based on environment-friendly quantum dots

The invention discloses an efficient laminated fluorescent solar concentrator based on environment-friendly quantum dots, and belongs to the technical field of solar photoelectric conversion. According to the condenser, an upper layer structure and a lower layer structure are physically attached to form an optical coupling laminated design, wherein the top layer uses environment-friendly carbon quantum dots for absorbing visible light of 300-500 nm as a light-emitting material; and the bottom layer adopts copper-based ternary quantum dots of which the absorption range covers ultraviolet light to near-infrared light. The invention also provides a preparation method of the condenser. The structure not only realizes wide-range efficient absorption and fluorescence convergence of solar spectrum, but also has the characteristics of environmental friendliness and no heavy metal toxicity. Under AM 1.5 G standard illumination, the highest photoelectric conversion efficiency of the laminated condenser reaches 4.48%, and the laminated condenser has excellent stability and environmental protection compatibility and is suitable for building windows, vehicle skyscreens and other scenes.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Solar panels

PCT designated stageWO2026148090A1Electrical batterySolar cell
A luminescent solar concentrator (LSC) includes first, second, and third waveguides and a photovoltaic cell. The first waveguide includes a first substrate and a first luminophore on the first substrate and / or embedded in the first substrate. The second waveguide includes a second substrate and a second luminophore on the second substrate and / or embedded in the second substrate. The third waveguide includes a third substrate and a third luminophore on the third substrate and / or embedded in the third substrate. The photovoltaic cell is coupled to the first, second, and third waveguides. The second waveguide is between the first and third waveguides. The LSC is configured to receive light in a direction defined from the first waveguide to the third waveguide.
Owner:BOARD OF TRUSTEES OPERATING MICHIGAN STATE UNIV

Multi-stage system for heating air for drying by means of concentrated solar energy

The present invention relates to a multi-stage system for heating air for drying in general, applied to the field of thermal engineering and methods, more specifically TO the area of heat transfer and energy efficiency using solar concentrators (3) for heat a fluid, which is stored in a thermal reservoir (1), connected to a main heat exchanger (11) that performs heat exchange with the drying air, which is injected into a dryer (2). In addition to reusing residual air, by heating a secondary heat exchanger (10), it operates with a support system (16) that may be activated when necessary. The system discloses the advantages of using renewable energy for drying without affecting the environment.
Owner:DIB ERICK ALFRED

A nanofluid trough solar concentrator

The application provides a nanofluid groove type solar concentrator and relates to the technical field of concentrators.The solar concentrator comprises a protective cover, a mounting seat is fixedly connected to the inner wall of the middle position of the bottom of the protective cover, a reflecting mirror is arranged in the mounting seat, and a nanofluid is arranged in a heat collecting pipe.The nanofluid comprises the following raw materials: multi-walled carbon nanotubes, glycerol and betaine.The nanofluid is prepared by compounding nanoparticles and a base fluid, is filled into the heat collecting pipe to perform heat absorption and heat conduction, the multi-walled carbon nanotubes have excellent heat conduction performance, the heat collecting pipe adopting the nanofluid has high efficiency in heat transfer, and due to the good stability of the nanofluid and the high refractive index of the nanoparticles, the nanofluid does not have the phenomena of precipitation and stratification in long-term use, and the heat collecting pipe has high heat transfer and heat conduction efficiency.
Owner:SHANGHAI SECOND POLYTECHNIC UNIVERSITY

Parabolic trough solar collector

A parabolic trough solar collector for concentrated solar power (CSP) applications includes a solar concentrator, a central mount to which the solar concentrator is coupled, and a receiver tube fixed at a focal point above the solar concentrator. The solar concentrator is operable to actuate relative to a single axis through the receiver tube. The surface of the solar concentrator is arranged with a fixed slope relative to a horizontal plane.
Owner:GLOBAL WATER FARMS CORP +2

Closed refraction-reflection composite high-power eye-shaped solar concentrator

The invention discloses a closed refraction-reflection composite high-power eye-shaped solar concentrator, and relates to the technical field of renewable energy sources. Comprising a Fresnel lens and a reflector, the Fresnel lens and the reflector are symmetrically arranged to form an eye socket structure, rectangular frames are clamped to the edges of the Fresnel lens and the reflector, the rectangular frames are connected with movable end plates, rotating shafts are arranged in the movable end plates, and the inner sides of the rotating shafts are connected with tubular light receivers through steel wire corrugated pipes. The outer side of the movable end plate is connected with a fixed support, one side of the fixed support is provided with a motor module, the motor module is electrically connected with the movable end plate, and the motor module is externally connected with a controller; by the adoption of the closed refraction-reflection composite high-power eye-shaped solar concentrator, various influences of solar motion on the reflection concentrator can be avoided, energy loss caused by optical deviation is reduced, more solar energy is effectively collected, and higher photo-thermal conversion efficiency is achieved.
Owner:NANJING NORMAL UNIVERSITY

System and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge

A system and method for preparing sulphoaluminate cement from solar energy stored heat dried sludge. Solar concentrator connected to high-temperature molten salt storage tank, superheater, preheating-evaporator and low-temperature molten salt storage tank to form mixed molten salt heat transfer-heat storage circulation system; superheated steam in superheater enters ultra-disc dryer, and ultra-disc dryer connected to water storage tank and preheating-evaporator superheater to form water heat transfer circulation system; wet sludge bin connected to ultra-disc dryer and inlet of dried sludge bin, and dried sludge conveyed to dried sludge bin for storage; and cement production system separately connected with waste gas outlet of ultra-disc dryer and outlet of dried sludge bin. System can use valley electricity to supplement heat at any specific time, and coupled with cement kiln; waste gas introduced into cement kiln for waste burning; dried sludge mixed with other solid waste to enter cement kiln to prepare sulphoaluminate cement.
Owner:SHANDONG UNIV

A method for constructing a curved surface solar concentrator with uniform light absorption on the surface of the absorber

PendingCN122286993Aevenly distributedEliminate local hot spotsPhotothermal conversionNonlinear differential equations
This invention relates to a method for constructing a curved solar concentrator with uniform light reception on the absorber surface, belonging to the field of solar photovoltaic and photothermal technology. This invention utilizes differential geometry theory to construct a system of first-order nonlinear differential equations relating the concentrator's reflective surface (x and y coordinates) to the radius r of the circular absorber. The reflective surface profile parameters are obtained through iterative solutions. A discrete point lattice is obtained, with the spatial straight-line distance and maximum deviation between adjacent iteration coordinate points not exceeding 2 mm as the convergence criterion. A curved concentrator model is then generated through spline curve fitting. The energy flux density distribution on the absorber surface is obtained using the ray tracing software Tracepro, and the uniformity of the energy flux distribution is verified using a relative deviation not exceeding ±10% of the average value. This invention achieves uniform distribution of incident solar radiation on the absorber surface, eliminates local hot spots, significantly reduces thermal stress gradients, and improves the photothermal conversion efficiency and operational stability of the solar concentrator system.
Owner:KUNMING UNIV OF SCI & TECH

A segmented CPC solar concentrator and a method of designing the same

The application provides a sectional CPC solar concentrator and a design method thereof. A compound parabolic reflector is fixed in a frame. A flat plate receiving surface is a heat absorbing surface of a flat plate light receiving body. The compound parabolic reflector is symmetrically arranged on both sides of the flat plate receiving surface. The compound parabolic reflector is composed of multiple sub-reflectors. The sub-reflectors are sequentially connected in a head-to-tail mode. The focal lines of the sub-reflectors on the flat plate receiving surface are evenly arranged from the middle to both sides. The focal lines of the sub-reflectors are different and parallel to each other. The sectional design of the traditional trough type parabolic concentrator profile is adopted, so that the energy flow density on the flat plate receiving surface is evenly distributed in multiple focal lines. The uniformity of the energy flow density distribution on the flat plate receiving surface of the concentrator is effectively improved. The thermal stress concentration on the flat plate receiving surface is greatly reduced. The service life of the concentrator is effectively prolonged.
Owner:INNER MONGOLIA UNIV OF TECH

Curved trough solar concentrator

A solar power concentrator system includes a housing and a glass coupled to the housing to define an enclosure therebetween. A trough concentrator is rotatably disposed in the enclosure. The trough concentrator includes a pair of end plates, a tube or pipe extending along the length of the support frame that allows a fluid to pass therethrough, a support frame extending between and attached to the end plates, and a reflective film having opposite edges attached to side rails of the support frame. The reflective film has a curved (e.g., parabolic) shape between the opposite edges and can reflect sunlight onto the tube or pipe. An actuator rotates the trough concentrator about an axis of the end plates to vary an orientation of the reflective film. The glass shields the reflective film of the trough concentrator from wind.
Owner:IDEALAB STUDIO LLC

A dual-axis tilting solar concentrator

The embodiment of the application provides a kind of double-axis tilting solar light condensing device, it is related to solar light condensing heat collection technical field.The double-axis tilting solar light condensing device provided by the embodiment of the application, including base;Reflecting mirror is set on base, reflecting mirror is used to reflect sunlight;Double-axis tilting assembly is set on base, and is connected with reflecting mirror, double-axis tilting assembly is configured as driving reflecting mirror rotates around east-west direction and / or north-south direction;Heat collecting pipe is located on the light condensing axis of reflecting mirror, to absorb the sunlight reflected by reflecting mirror.By controlling double-axis tilting assembly to drive reflecting mirror to realize double-axis rotation according to the change of solar elevation angle, so that reflecting mirror can follow the change of solar elevation angle and tilt, to increase the incidence angle of sunlight, in turn increase the light condensing efficiency of reflecting mirror, improve the annual solar radiation received by double-axis tilting solar light condensing device.
Owner:THREE GORGES ONSHORE NEW ENERGY INVESTMENT CO LTD +1

A copper-iodine hybrid cluster compound, a preparation method and application thereof

This invention provides a copper-iodine hybrid cluster compound having the structure shown in formula (I). Compared with the prior art, the copper-iodine hybrid cluster compound provided by this invention has excellent thermal stability, high fluorescence quantum yield, large Stokes shift, high solubility, strong absorption in the ultraviolet region, and a simple synthesis method. It meets the requirements of ideal transparent solar concentrator materials and ultraviolet shielding agents, and has broad application prospects in the field of building-integrated photovoltaics. In addition, it can also be applied to anti-counterfeiting coatings, solid-state lighting, X-ray imaging, and other fields.
Owner:UNIV OF SCI & TECH OF CHINA

Solar full-spectrum physiotherapy instrument

PendingCN121971806Aachieve physiotherapyLarge light focusing areaOperating tablesSensorsHuman skinGrating
The invention discloses a solar full-spectrum physiotherapy instrument which comprises a reflective mirror, a solar condenser, a light processing device and a physiotherapy couch connected with the light processing device. After sunlight is processed, energy in a certain wave band can be provided for the solar condenser, the solar condenser converges light rays to a lighting opening of the light processing device, and the light rays can reach a physical therapy area of a certain part of a human body after being controlled and adjusted through a reflecting area. The optical processing device is sequentially provided with gratings from a light inlet to a light outlet to adjust the intensity and distribution uniformity of light. The physiotherapy couch comprises universal wheels capable of being used for moving, a hydraulic lifting device and a hydraulic rotating device. According to the invention, the light of the solar light condensation area is irradiated to the skin surface of the human body to achieve the purposes of improving yang qi of the human body and treating diseases through sunlight, and the light is processed by using a spectrum frequency division technology and the light processing device, so that the light of a specific wave band is uniformly distributed on the skin surface with proper intensity, and the treatment effect is achieved.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

A mold for making a luminescent solar concentrator

ActiveCN224675306UEngineeringSlurry
The utility model discloses a kind of molds for making light-emitting solar concentrator, including mold main body, the glass forming closed forming chamber is embedded in both sides of the mold main body, the pouring port is provided at the top of the mold main body, LSC slurry is poured into closed forming chamber by pouring port;Several clamps are provided on the side wall of the mold main body, and the clamp is used to clamp the glass of both sides of mold main body.This mold supports single production line multi-mold synchronous operation, the stable clamping of glass by clamp, cooperate closed forming chamber, can ensure the forming condition of each set of mold uniform, reduce quality fluctuation from root source.This mold has high-precision forming surface, can ensure that the LSC surface made reaches enough flatness, reduces the light scattering, refraction loss caused by surface unevenness, improves the capture and transmission efficiency of LSC to light.
Owner:XI AN JIAOTONG UNIV

Solar photovoltaic photo-thermal system and working method thereof

The invention relates to the technical field of new energy, and provides a solar photovoltaic photo-thermal system and a working method thereof.The solar photovoltaic photo-thermal system comprises a composite plane mirror reflection solar concentrator, a solar photovoltaic cell, an optical glass channel, an aluminum channel and a fluid pipeline; the optical glass channel is arranged below the focal point of the composite plane mirror reflection solar condenser, and the solar photovoltaic cell is arranged right above the optical glass channel, so that light rays reflected by the composite plane mirror reflection solar condenser are partially absorbed by the nano fluid in the optical glass channel, and the light rays are reflected by the nano fluid in the optical glass channel. One part of the light is emitted to the solar photovoltaic cell through the optical glass channel for photovoltaic power generation; the aluminum channel is arranged right above the solar photovoltaic cell and is used for cooling the solar photovoltaic cell, and the nano fluid heated in the aluminum channel enters the optical glass channel through the fluid pipeline. And the electric power, the thermal power and the grade of heat energy output by the PV-T system can be improved at the same time.
Owner:SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP

A method for preparing a low-dimensional lead-free perovskite polymer composite material

The application relates to a preparation method of a low-dimensional non-lead perovskite polymer composite applied to the field of low-dimensional semiconductors, and provides a novel microemulsion method of a proton solvent-mediated low-dimensional non-lead perovskite, so as to improve the dispersion difficulty of the perovskite in a mother liquor medium, improve the uniformity of the perovskite micro-nano structure, and further enhance the external quantum efficiency of a light-emitting solar concentrator using the composite material, effectively solve the barrier of the related technology at the present stage to the distribution regulation of the non-lead low-dimensional perovskite in the composite material, and abandon the introduction of a traditional lead metal based on the light-emitting solar concentrator of the non-lead low-dimensional perovskite, so that the environmental protection is high, the environmental hazards are small, the cost is low, the device output power is stable, the method is suitable for commercialized building integrated photovoltaic products, including but not limited to photovoltaic windows / roof / curtain walls and the like, and is helpful to the development of the zero-carbon building field.
Owner:WUXI YIDIAN HUANCAI NEW MATERIALS CO LTD

High temperature heat exchanger and thermo-acoustic power generation system

The application provides a high-temperature heat exchanger and a thermoacoustic power generation system, wherein the high-temperature heat exchanger comprises a heat collecting part and a heat exchanging part; a plurality of slots are arranged on one end of the heat collecting part, and the opening end of the slot is suitable for being directed to a solar concentrator; one side of the heat exchanging part is connected with the other end of the heat collecting part, and the other side of the heat exchanging part is suitable for being connected with a thermoacoustic generator. By arranging the plurality of slots on the one end of the heat collecting part, the heat collecting part can be arranged at the focal point of the solar concentrator by adjusting the placement position and the direction of the heat collecting part, and the design of the plurality of slots can reduce the outward reflection of the sunlight, so that the sunlight can be captured and the light-heat conversion efficiency is improved.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI