130 results about "Solar spectra" patented technology

The invention provides a solar seawater desalination photothermal conversion efficiency optimization method and system based on machine learning, and the method comprises the steps: firstly collecting the solar spectrum distribution data, seawater turbidity spectrum data, real-time heat flow data and semiconductor nanomaterial data of a target sea area; and constructing a material spectrum mapping library based on the light absorption characteristics of the nano material. Through coupling analysis of a solar spectrum and a seawater turbidity spectrum, an environmental constraint condition is formed, a Bayesian optimization model is combined with a material spectrum mapping library and real-time heat flow data, and an optimal nano material mixing ratio is generated under environmental constraint. Then, the interface evaporation rate is predicted through the deep residual network, an optimal material morphology configuration scheme is obtained, and finally the morphology configuration is applied to semiconductor nanomaterial preparation. The photo-thermal conversion efficiency of the solar desalination system in the high-turbidity seawater environment is improved.

The invention belongs to the field of composite materials, and particularly relates to a nanofiber radiation refrigeration heat insulation film with a bionic multilayer structure. The device sequentially comprises a bionic anti-reflection layer, a solar spectrum reflection layer, a nanofiber porous heat insulation layer and an atmospheric window radiation layer from outside to inside, the bionic anti-reflection layer is a sub-wavelength nano bulge array simulating a moth eye structure and is formed on the outer surface of the solar spectrum reflecting layer; the solar spectrum reflecting layer is a polymer film doped with high-reflectivity nanoparticles; the nanofiber porous heat insulation layer is a porous membrane formed by interweaving polymer nanofibers prepared by an electrostatic spinning technology; the atmospheric window radiation layer is a functional layer formed by coating or blending high-emissivity inorganic nanoparticles on the inner surface of the nanofiber porous heat insulation layer; the film integrates bionic antireflection, high sunlight reflection, efficient heat radiation and physical heat insulation, and efficient, stable and flexible daytime radiation refrigeration is achieved.

The invention discloses a TEC photo-thermal stable thermoelectric power generation device and a preparation method thereof, and relates to the technical field of thermal power generation, and the TEC photo-thermal stable thermoelectric power generation device comprises an energy capture module, a thermoelectric power generation module and a dual-mode heat dissipation module which are sequentially arranged from top to bottom; the energy capture module comprises a silicon substrate with a micro-cone array on the surface, a phase change energy storage buffer dielectric layer coated on the surface of the micro-cone array, and a silicon carbide film layer, a titanium nitride film layer and a titanium nitride nanoparticle layer which are sequentially arranged on the surface of the phase change energy storage buffer dielectric layer; the thermoelectric power generation module comprises a corrugated metal composite substrate and a plurality of thermoelectric units arranged on the surface of the metal composite substrate. The bottleneck that a traditional single material is insufficient in solar spectrum coverage is broken through, the solar energy utilization efficiency is greatly improved, excessive heat generated by sudden change of instantaneous illumination intensity can be effectively absorbed, and continuous and stable heat source input is provided for thermoelectric conversion.

The invention discloses an on-orbit spectrum precision test method and equipment for an ultraviolet hyperspectral remote sensor, and the method comprises the steps: selecting a high-resolution reference solar spectrum higher than the spectral resolution of the ultraviolet hyperspectral remote sensor, and calculating a reference standard solar spectrum according to the high-resolution reference solar spectrum; establishing a reference wavelength library according to the reference standard solar spectrum of the ultraviolet band, and selecting a standard absorption line meeting conditions as a reference wavelength; screening an absorption peak center position of the observation spectrum, finding an absorption peak center closest to the reference wavelength in combination with the reference wavelength library, and constructing a peak searching database of the absorption peak center of the discrete spectrum; and calculating a difference value between the central wavelength calculated according to the peak searching database and the corresponding reference wavelength to obtain the spectrum calibration precision of the ultraviolet hyperspectral remote sensor. According to the method, the precision difference of the spatial dimension can be identified, the distribution of the overall system deviation is quantified, and reliable support is provided for on-orbit precision verification and performance optimization of the ultraviolet hyperspectral remote sensor.

The invention relates to the technical field of radiation refrigeration films, and discloses a porous polyvinylidene fluoride based composite radiation refrigeration film and a preparation method thereof. The method comprises the following steps: firstly, carrying out melt blending on PVDF, NaCl and ZnO nanoparticles and forming a film, then dissolving out NaCl through water washing, and constructing a continuous three-dimensional porous structure in a PVDF matrix; and immersing the obtained porous PVDF / ZnO membrane material into a methanol aqueous solution containing 2-methylimidazole, so that ZnO is subjected to a coordination reaction at the pore wall and is converted into the ZIF-8 nanocrystal in situ. In the thin film prepared by the steps, the micron-sized salt-induced pore structure, the nano-sized ZIF-8 particles and the interface of the ZIF-8 particles jointly form a multi-stage scattering network, so that the scattering ability of the thin film in the solar spectrum range of 0.25-2.5 microns can be remarkably enhanced, the high infrared emission performance of the PVDF matrix in an atmospheric window of 8-13 microns is maintained, and the thin film has high solar reflectivity and high infrared emissivity, and can be used for preparing the solar film. An excellent radiation refrigeration effect can be achieved, and the heat-dissipating material is suitable for being applied to building outer surfaces, equipment heat dissipation, individual heat management and the like.

The invention is applicable to the technical field of sunlight utilization and wastewater treatment, and provides a preparation method and application of a photo-thermal-photocatalytic solar interface evaporator. According to the method, alkalized polyacrylonitrile aerogel is used as a matrix framework, BiOI-Bi-Bi2O3 composite particles are used as main photo-thermal-photocatalytic functional materials, and the photo-thermal-photocatalytic solar interface evaporator is prepared. And the single layer of Ti < 3 > C < 2 > T < x > MXene is used as a synergistic photo-thermal and photo-photocatalytic auxiliary agent. According to the prepared composite aerogel, BiOI, Bi2O3 and Bi are combined to form a stable interface heterostructure, and meanwhile, full-wave-band efficient utilization of a solar spectrum is realized by utilizing single-layer Ti < 3 > C < 2 > T < x > MXene. The evaporator can be used for effectively treating a water source containing complex pollutants and synchronously realizing desalination and deep purification. The evaporator has remarkable effects in the aspects of improving the photo-thermal conversion efficiency, optimizing the evaporation process and the resource utilization rate, protecting the environment, saving energy and the like, and has wide application prospects in the aspects of water resource shortage and water environment pollution.

The invention discloses a photovoltaic power generation forecasting method based on spectrum forecasting, and aims at solving the problem that errors are large due to the fact that only temperature and total irradiance are considered in an existing photovoltaic power generation forecasting method. The method comprises the following steps: downloading global forecast data and carrying out lattice point coding conversion; then carrying out dynamic downscaling and calculating future key meteorological variables; calculating the spectral optical thickness of each atmospheric component by using the spectral absorption and scattering coefficients of different gas components in the HITRAN database, and obtaining direct and scattered spectral irradiance according to the spectral optical thickness; carrying out calculation result verification and artificial intelligence correction by utilizing a solar spectrum radiometer; calculating generated power of different wavelengths; and calculating the final generation power through integral calculation in combination with the loss of other parts of the photovoltaic module. And forecasting a radiation spectrum at a future moment according to different forecasted meteorological variables, and converting radiation into power generation power according to the spectrum, thereby realizing refined conversion of optical power.

The embodiment of the invention provides a remote sensing image atmospheric correction method and system for an ocean near-shore scene, and relates to the technical field of ocean remote sensing image atmospheric correction. According to the method, after remote sensing data is obtained, solar flare correction is executed by extracting a target mask and using a secondary simulation model of a satellite signal in a solar spectrum. And then a multi-band darkness index is calculated, and an optimal aerosol optical thickness value is inverted through a radiation transmission model. And calculating the atmospheric correction coefficient of each wave band according to the optimal aerosol optical thickness value so as to generate correction result data. According to the method, on the basis of robust flare correction of the SWIR proxy, scene-adaptive flare proxy is constructed by utilizing water body reflection and path radiation physical characteristics of the SWIR under a deepwater condition, and flare deduction is realized. Inversion is carried out through multiband combined darkness indexes, and the spectral characteristics of the deep water body reflected in the visible spectrum are utilized, so that single-band random noise is smoothed, and the accuracy of an AOT estimation result is improved.

The invention provides a solar photovoltaic system, and belongs to the technical field of photovoltaics. The system comprises a light condensation module which is used for self-adaptively focusing according to the illumination condition and splitting light; the wide-spectrum absorption photovoltaic module is used for receiving the light transmitted by the condensation module and optimizing spectrum absorption; the intelligent control system is used for generating an optimal strategy through a preset fusion model according to the collected various aspects of data of the solar photovoltaic system, and sending a control instruction according to the optimal strategy; the storage battery module is used for storing electric energy from the wide-spectrum absorption photovoltaic module; and the electric energy output and adaptation module is used for receiving the electric energy of the storage battery module. According to the invention, the absorption range of the solar spectrum is widened; the optimal control strategy can be accurately generated in real time, and the whole solar photovoltaic system can quickly adapt to complex working conditions and always keep an efficient and stable operation state through cooperative regulation and control of all the modules.

The present disclosure provides a film for enhancing the growth of plants in the Cannabaceae family, the film being capable of blocking solar spectrum in the range 430-550 nm. The present disclosure also provides a single- or multi-layer plastic greenhouse film for enhancing cannabis plant growth, where the single- or multi-layer plastic greenhouse film (a) has at least one blue light blocking layer for blocking solar spectrum in the range of 430-500 nm; (b) has a high transmittance for red light in the solar spectrum in the range of 600-750 nm.

The invention provides an under-forest light spot space-time distribution simulation method and system based on anisotropic probability volume fraction, and the method comprises the steps: obtaining laser radar point cloud data of a target forest stand, and carrying out the preprocessing, and generating a standardized point cloud; constructing a forest probability density field: dividing a forest stand space into voxel grids, and for each non-empty voxel containing vegetation, extracting spatial distribution statistical characteristics of internal point clouds of the non-empty voxel and calculating an anisotropic extinction coefficient of each non-empty voxel; the method comprises the following steps: simulating the sun as a surface light source with a preset angular diameter, emitting light from an under-forest preset observation point to the surface light source, executing probability volume fraction light stepping in a forest probability density field, and obtaining the optical thickness by accumulating anisotropic extinction coefficients of all non-empty voxels on a light propagation path. And then calculating the transmittance of the light reaching the observation point, integrating the solar spectrum irradiance in a wave band and a time period corresponding to the photosynthetically active radiation, and generating a spatial-temporal distribution map of the photosynthetically active radiation under the forest.

This application provides a machine learning-based method and system for optimizing the photothermal conversion efficiency of solar desalination in seawater. The method includes: firstly, collecting solar spectral distribution data, seawater turbidity spectral data, real-time heat flow data, and semiconductor nanomaterial data for the target sea area; and constructing a material spectral mapping library based on the light absorption characteristics of the nanomaterials. By coupling analysis of the solar spectrum and seawater turbidity spectrum to form environmental constraints, a Bayesian optimization model is used in conjunction with the material spectral mapping library and real-time heat flow data to generate the optimal nanomaterial mixing ratio under these constraints. Subsequently, a deep residual network is used to predict the interfacial evaporation rate and obtain the optimal material morphology configuration scheme, which is finally applied to the preparation of semiconductor nanomaterials. This application improves the photothermal conversion efficiency of solar desalination systems in high-turbidity seawater environments.

The application provides a high-thermal-conductivity heat dissipation integrated composite heat control film for satellites, which comprises a protective layer, a nano heat control film and a graphite film. The nano heat control film comprises a protective layer based on the surface of the film and a three-dimensional micro-nano structure, the graphite film is packaged by hot melt adhesive and is pasted together with the nano heat control film by the hot melt adhesive to form a new high-thermal-conductivity heat dissipation integrated composite heat control film. The application is pasted on the outer surface of a satellite cabin plate or an antenna and the like by silicone rubber, so that the outer surface of the satellite has the characteristics of high reflectivity to the solar spectrum, high emissivity to the infrared spectrum and high thermal conductivity, the uniformity of the temperature field of the whole satellite is improved, the reliability of the single machine in the cabin is improved, the production cycle of the product is short and the product is convenient to implement. The application solves the problems of high heat flux density, complex illumination components and rapid development of future low-orbit satellite constellations, the production cost is significantly reduced, and the commercial batch production of the satellite constellations is facilitated.

This invention discloses a superhydrophobic radiation-cooling polymer coating, its preparation method, and its application. The coating is white and possesses a bicontinuous micro / nano porous structure. It is prepared by a ternary copolymerization reaction of polyurethane acrylate oligomers, acrylate reactive diluents, and vinyl siloxane porogens. The method involves initiating free radical polymerization of monomers in the porogen under ultraviolet light, inducing rapid phase separation, and naturally evaporating the porogen to obtain the coating. This coating exhibits superhydrophobicity without post-treatment, virtually no absorption in the solar spectrum, and near-100% emissivity in the mid-infrared window. Furthermore, the optical properties and superhydrophobicity of the coating are minimally affected by long-term ultraviolet irradiation, thermal aging, acids, and alkalis. This coating can be applied over large areas in high-performance radiation-cooling applications.

A system for illuminating a target in the presence of atmospheric turbulence includes a coherent beam combining (CBC) subsystem, an atmospheric wave-front sensor (AWS) subsystem, a multi-channel photo-detector (MCPD) subsystem, an auxiliary light source, and a receiving optical aperture. The CBC subsystem forms a multiplicity of CBC sub-beams and an reference beam, all of which fall in a wavelength band that is different from that of the auxiliary light source. The auxiliary light source may be a laser or a portion of the solar spectrum of the Sun. An AWS controller provides closed-loop compensation of atmospheric turbulence for low power auxiliary reflection and reference beams. A MCPD controller provides closed-loop compensation of high-frequency laser noise and transfers the wavefront correction from the reference to the high power CBC laser. The frequency of the MCPD controller is at least an order of magnitude greater than the bandwidth of the AWS controller.

The invention discloses a purple phosphorus-based monatomic catalyst for efficient hydrogen evolution and a preparation method of the purple phosphorus-based monatomic catalyst, and belongs to the technical field of catalysts. The preparation method comprises the following steps: treating block purple phosphorus by a liquid-phase ultrasonic stripping method to obtain a purple phosphorus precursor serving as a carrier; mixing a platinum salt solution with the purple phosphorus precursor to form a mixed solution; and carrying out irradiation treatment on the mixed solution by adopting a standard solar spectrum, so that platinum ions in the platinum salt are reduced and anchored on the purple phosphorus precursor in a monatomic form, thereby obtaining the purple phosphorus-based monatomic catalyst. The whole technological process only relates to common raw materials such as purple phosphorus and trace platinum salt, operation is easy and convenient, cost is low, and product purity is high. According to the method, the monatomic catalyst with a clear structure is successfully constructed through ingenious process design by utilizing the confinement effect of purple phosphorus and the synergistic effect of photoreduction, and a solid foundation is laid for the monatomic catalyst to show high catalytic activity and excellent stability in a hydrogen evolution reaction.

The invention relates to a biomass-based radiation refrigeration fireproof composite material and a preparation method thereof, and belongs to the technical field of macromolecular fireproof composite materials. In order to solve the problem that an existing fireproof coating cannot give consideration to both thermal management and fireproof performance, the invention provides a biomass-based radiation refrigeration fireproof composite material which comprises magnesium-aluminum hydrotalcite powder, cellulose nanofibers and a hydrophobic adhesive. According to the invention, a brick-mud hierarchical structure with a shell-like structure is constructed through electrostatic self-assembly, and the mechanical strength and toughness of the material are improved. The optical performance is improved through a multi-stage scattering interface constructed through CNF, and the solar spectral reflectivity is as high as 95.6%. The emissivity of the atmosphere window wave band reaches 94.9%, the radiation refrigeration power reaches 138.54 W / m < 2 >, and the thermal management performance is far better than that of a traditional fireproof coating. The inherent flame retardant property of Mg-Al LDH is combined with the enhancement effect of CNF, so that the material is endowed with excellent flame retardant property and good thermal stability.

The invention discloses a polar axis type solar direct radiation spectrum measurement method and system, belongs to the technical field of solar direct radiation spectrum measurement, and aims to solve the problems that an existing measurement system depends on complex double-axis tracking, has many errors, is high in maintenance cost and is insufficient in latitude adaptability. The system comprises a polar axis rotating reflector and a solar spectrum measurement system, the polar axis rotating reflector directly radiates and reflects the sun with the solar elevation angle of + / -23.5 degrees and the solar azimuth angle of + / -90 degrees to the measurement system, and measurement is achieved in combination with a spectrum reconstruction model. The spectral resolution is superior to 2 nm, the single-point error ranges from-6.83% to 6.61%, the area error ranges from-0.03% to 0.05%, the space-time uniformity is larger than or equal to 99.92%, the structure is simplified, all-year-round all-latitude high-precision measurement without moving tracking is achieved, and the method is suitable for the fields of solar energy development, climate change research and the like.

The invention relates to the technical field of photoelectrochemical water decomposition, and discloses a solar cell hydrogen production method, which comprises the following steps: S1, collecting solar irradiation data and electrolyte state parameters through a photovoltaic-electrolytic cell integrated new energy battery device, S2, carrying out wave band division processing on a solar spectrum, and S3, carrying out wave band division processing on the solar spectrum, the visible light wave band is directionally transmitted to a photovoltaic unit for power generation, and the infrared wave band is guided to a heat exchange unit for preheating electrolyte; by establishing a frequency division processing mechanism of visible light and infrared bands, solar spectrum energy is distributed to photovoltaic power generation and electrolyte preheating according to needs, irradiation intensity fluctuation and thermoelectric requirements of an electrolytic cell can be matched in real time, cooperative supply of photovoltaic output electric energy and heat exchange power is guaranteed, attenuation of hydrogen production efficiency caused by abnormal spectrum distribution is avoided, and the service life of the hydrogen production system is prolonged. The stability and continuity of the energy conversion process are improved, and the membrane electrode coupling protection end is arranged, so that the long-term operation reliability of the new energy battery device under complex working conditions is guaranteed.

The invention discloses a solar spectrum unmixing and beam combining method based on grating inverse dispersion, relates to the technical field of solar spectrum simulation, and solves the problems of low energy utilization rate, poor spectrum coincidence and difficulty in wide spectrum matching in traditional beam combination. The method comprises the following steps: carrying out discrete sampling on an AM0G / AM1.5 G spectrum, selecting a plurality of narrow-band LEDs as reconstruction units, and solving a weight coefficient by a least square method to realize spectrum unmixing; the light is condensed to a grating through a focusing lens, inverse dispersion beam combination is carried out according to a grating equation, and a divergence angle is corrected to 0.733 degrees / 0.814 degrees through a cylindrical shaping lens; and evaluating the quality through SD, SMSR and light spot overlap ratio. The spectrum matching error is smaller than or equal to 5.89%, the light spot overlap ratio is 95.42%, double spectrums can be switched, and the method is suitable for high-precision spectrum beam combination of the solar simulator.

Various aspects as described herein are directed to a radiative cooling device and method for cooling an object. As consistent with one or more embodiments, a radiative cooling device includes a solar spectrum reflecting structure configured and arranged to suppress light modes, and a thermally-emissive structure configured and arranged to facilitate thermally-generated electromagnetic emissions from the object and in mid-infrared (IR) wavelengths.

The invention relates to the technical field of photothermal conversion materials, in particular to a total solar spectrum absorption type triarylamine cation free radical system. The organic triarylamine cation free radical shows excellent stability, has a narrow-band gap characteristic, and can efficiently absorb light energy in the whole solar spectrum range by combining with a unique intervalence charge transfer effect, so that the light energy in the whole solar spectrum range can be effectively absorbed, and the light energy in the whole solar spectrum range can be effectively absorbed. The free radical material can quickly convert light energy into heat energy through an ultrafast non-radiative transition process, and shows excellent solar photo-thermal conversion performance.

The application provides a spectrum bending correction method, system and medium, relates to the fields of spectral imagers and satellite remote sensing technology, and comprises the following steps: S1, selecting a solar spectrum image as sample data for spectrum bending correction, and performing curve fitting on the sample data; S2, calculating the bending degree of each column of a to-be-corrected image according to the fitted curve; and S3, correcting each column of the to-be-corrected image by using the time shift property of Fourier transform according to the bending degree of each column, completing the correction of all column data, and obtaining complete corrected spectrum image data. The application can not need to increase the design and manufacturing difficulty of a spectral element or a slit, not need complex calculation, only use the time shift property of discrete Fourier transform to process image data, and simply and intuitively complete spectrum bending correction.

This invention discloses a colored radiative cooling thin film based on Fano resonance and its preparation method. The thin film comprises a structure stacked sequentially from bottom to top: M1D1M2D1AD'. The structure of the thin film is asymmetric, where M1 represents a first metal layer, M2 represents a second metal layer, A represents an absorption layer, D1 represents a first dielectric layer, and D' represents a symmetrical dielectric layer unit. The M1D1M2 structure is a discrete state, serving as a narrowband light absorber, while the M2D1AD' structure is a continuous state, serving as a broadband light absorber. D' serves as a continuous antireflection layer. The narrowband and broadband light absorbers are coupled through a shared second metal layer M2, achieving Fano resonance. This invention features a high-purity, tunable reflective structural color, high reflectivity in the solar spectrum, and high emissivity in the atmospheric window, thus achieving excellent radiative cooling effects.

As water body signals are generally less than 5%, this paper proposes a multispectral remote sensing random optimal ratio logarithmic water depth inversion method. It comprehensively considers the influence of solar spectrum, total upward scattering rate, solar zenith angle, global total transmittance, vertical irradiance and total spherical albedo, constructs an atmospheric coupled radiation calibration correction model to correct the atmospheric and water surface reflectivity, and uses a quotient interpolation tide height correction model to correct the tide height. The FNDWI normalized difference water index accurately extracts water bodies, and the random optimal model effectively extracts sub-datasets. The extreme gradient boosting method optimizes model parameters to obtain the optimal ratio logarithmic model for water depth inversion. Compared with the water depth inversion of the Stumpf model, the R of the water depth inversion of this model is better than that of the Stumpf model. 2 The accuracy is improved by 0.592 and the RMSE is improved by 0.841m.

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.

The utility model relates to the technical field of environmental simulation test equipment, in particular to an angle-adjustable solar spectrum filter for a test box, which comprises a filter body and a base frame, the upper end and the lower end of the back side of the base frame are respectively provided with a connecting corner bracket, and a transverse driving mechanism composed of a displacement push plate, a guide rod and a guide sleeve is arranged in each connecting corner bracket. The device comprises a base frame used for accurately controlling the horizontal transverse position of the base frame, the outer side of the base frame drives a rotating support through a rotating motor, an angle changing roller is arranged in the rotating support, supporting blocks are arranged at the upper end and the lower end of the outer side of the angle changing roller, and the outer sides of the supporting blocks are connected with fixing lugs used for being connected with and installing a filter body. According to the solar spectrum filter with the adjustable angle for the test box, the illumination angle can be flexibly adjusted, different illumination conditions can be conveniently simulated, and the experiment efficiency and the data accuracy are improved.

The invention relates to the technical field of environment monitoring, in particular to a point source plume influence point identification method based on concentration distribution. According to the technical scheme, the method comprises the following steps: carrying out underway observation around an emission point source, collecting solar spectrum and position information at the same time, carrying out inversion to obtain the concentration of a target gas column, and calculating the average mole fraction of a dry air column; generating a concentration distribution diagram by combining the position information, identifying a concentration background area according to the distribution characteristics, and determining a background concentration baseline and a variation amplitude; based on the background change amplitude and the observation uncertainty, setting a plume influence point judgment threshold value, calculating a concentration enhancement value of each point relative to the background, and if the enhancement value exceeds the threshold value, judging that the point is a plume influence point; and determining the range of the plume influence zone based on the spatial distribution of the plume influence points. According to the method, the plume influence area can be accurately identified under the condition that wind field data cannot be obtained or errors are obvious, and the reliability of emission flux estimation is effectively improved.

The application provides a spliced array reconfigurable sun-like spectrum simulation device and a simulation method, which comprises one or more simulation modules, and the simulation modules can be reconfigured to form an array; the simulation module comprises a light source, a mirror (2), a lampshade (3), a shell (4) and a refrigeration channel; a refrigeration air circulation loop formed by the refrigeration channel comprises an air outlet (6) and an air inlet (5) formed on the shell (4); light emitted from the light source is collected and reflected by the mirror (2) to form a uniform light spot. The application can be used for large-area sun light simulation test of a spacecraft, is a splicable sun radiation simulation device which can be used under normal temperature and pressure and in a space environment, and a method for simulating external heat flow is developed according to the device, so that the special requirements of complex configurations and new spacecraft on the simulation of sun spectrum external heat flow are solved.

The invention relates to a building radiation refrigeration ceramic tile taking industrial silicon slag as a raw material and a preparation method thereof. The ceramic is prepared by molding industrial silicon slag powder with the particle size of more than or equal to 100 meshes at room temperature and sintering at high temperature. The sintered ceramic is of a porous structure and mainly comprises silicon oxide and silicate. The porous structure has a strong Mie scattering effect on a solar spectrum and does not absorb solar spectrum energy, silicon oxide and silicate components have strong infrared radiation characteristics in an atmospheric window, and the ceramic tile has a radiation refrigeration function by combining the two mechanisms. When the ceramic tile is used for building exterior wall decoration, building refrigeration energy consumption can be effectively reduced. According to the radiation refrigeration ceramic tile, the sunlight spectrum wave band reflectivity is larger than or equal to 0.85, the 8-12 micron wave band emissivity in an atmospheric window is larger than or equal to 0.82, the refrigeration efficiency under the direct solar radiation condition is larger than or equal to 83 W / m < 2 >, and the refrigeration temperature difference of 6.2 DEG C is achieved. Theoretical calculation shows that in the typical environment of the Nanchang city, by using the ceramic tile, the refrigeration energy consumption can be saved by more than or equal to 16 MJ / m < 2 > all year round. According to the invention, high-value utilization of the industrial silicon slag can be realized, and the prepared building radiation refrigeration ceramic tile has good application potential in the field of reduction of building energy consumption, so that the purpose of sustainable and green social development is achieved.