536results about "Absorbing elements" patented technology

The invention relates to the related technical field of fabricated building outer walls, and discloses a severe cold area fabricated building outer wall based on a thermoelectric power generation technology, which comprises a fabricated wall body module, a thermoelectric power generation module, a heat collection structure module, a circuit connection module, an energy management module and a data monitoring module, the fabricated wall body module is a solid prefabricated concrete shear wall composed of an inner leaf wall plate, a heat preservation layer and an outer leaf wall plate, the heat collection structure module is fixedly installed on the outer wall of the fabricated wall body module, and the heat collection structure module comprises a heat absorption plate, a glass cover plate and a shell; according to the core component, the nickel-chromium alloy and the constantan alloy which are high in stability are directly welded for power generation, other technologies do not need to be combined, the core component can be directly applied to the building field, and under the condition that the power generation efficiency is guaranteed, the construction requirement of the building field is met as much as possible; and a brand new thought is developed for the energy-saving design of the fabricated building wall.

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 invention discloses a photovoltaic-photothermal-thermoelectric coupling system capable of efficiently utilizing sunlight. The system comprises a photovoltaic power generation module, a photo-thermal module and a thermoelectric power generation module, the photovoltaic power generation module is located on the upper layer of the whole system and is composed of a light condensation layer and a photoelectric conversion layer, and the photoelectric conversion layer converts photons in solar energy into electric energy through a photovoltaic cell; the photo-thermal module captures low-energy photons in sunlight through a heat absorption material, converts photon energy which cannot be utilized by a photovoltaic cell into heat energy through infrared radiation, and provides heat energy for the thermoelectric power generation module through heat conduction; and the thermoelectric power generation module is closely connected with the photo-thermal module, absorbs heat generated by the photovoltaic power generation module and the photo-thermal module and converts the heat into electric energy, and the thermoelectric material of the thermoelectric power generation module is a magnesium-based thermoelectric material. The problems of low energy conversion efficiency and high cost in the existing photovoltaic technology can be effectively solved, the utilization rate of solar energy is improved, and the method has remarkable application value in the field of renewable energy utilization.

The utility model relates to the technical field of water heaters, and discloses a pipeline anti-freezing device for an outdoor water heater, which comprises a water heater pipeline, the surface of the water heater pipeline is sleeved with a foam sleeve, the surface of the foam sleeve is sleeved with a heat preservation component, the surface of the heat preservation component is sleeved with a heating pipe, and the surface of the heating pipe is sleeved with a water inlet pipe. A cavity is formed in the inner wall of the heating pipe, an electric heating wire is fixedly arranged in the cavity, the surface of the heating pipe is sleeved with an aluminum foil layer, the surface of the aluminum foil layer is sleeved with a corrugated extension pipe, the surface of the corrugated extension pipe is sleeved with a waterproof film, and the surface of the waterproof film is sleeved with an A fixing ring. According to the pipeline anti-freezing device for the outdoor water heater, through the arrangement of the electric heating wire, the fixing ring A and the fixing ring B are installed on the outer surface of the waterproof film and communicated with an external power source, the temperature sensor senses the external temperature, and when the temperature is low, the temperature controller controls the electric heating wire to heat, heat the pipeline and melt ice, so that the pipeline of the water heater is prevented from being frozen to crack.

Omnivorous solar thermal thrusters and adjustable cooling structures are disclosed. In one aspect, a solar thermal rocket engine includes a solar thermal thruster configured to receive solar energy and one or more propellants, and heat the one or more propellants using the solar energy to generate thrust. The solar thermal thruster is further configured to use a plurality of different propellant types, either singly or in combination simultaneously. The solar thermal thruster is further configured to use the one or more propellants in both liquid and gaseous states. Related structures can include valves and variable-geometry cooling channels in thermal contact with a thruster wall.

The invention belongs to the technical field of solar photo-thermal power generation, and discloses a tower type solar power generation system based on lunar soil particle moving bed heat exchange, which utilizes local materials of lunar soil to prepare solid heat storage particles as a heat transfer and heat storage medium, greatly reduces the mass and volume of the system and the cost and risk of transporting materials from the earth, and improves the energy efficiency. The efficient particle moving bed heat exchanger combining the particle receiver and the heat collector utilizes direct efficient contact heat exchange between solid particles and between the particles and a heat exchange working medium, has the characteristics of high heat exchange efficiency, small heat loss and compact structure, and is particularly suitable for space vacuum and microgravity environments; it is ensured that heat is reliably and stably transmitted to the Brayton cycle power generation system from concentrated solar energy, and power is generated through the Brayton cycle power generation system.

The invention provides a radiation refrigeration and photo-thermal integrated Janus polylactic acid fiber membrane and a preparation method thereof, the method comprises the following steps: step S1, dissolving a silicon source, an alkaline solvent A and deionized water in an alcohol solvent B, and mixing through UV irradiation to obtain a SiO2 suspension; s2, polylactic acid is dissolved in a solvent C, a polylactic acid fiber membrane is prepared through an electric centrifugal spinning technology, then the polylactic acid fiber membrane is soaked in the SiO2 suspension liquid, and a cooling layer fiber membrane is obtained; and S3, dissolving a photo-thermal functional factor, polylactic acid and a dispersing agent in a solvent D to obtain a heating layer spinning solution, preparing heating layer fibers through an electric centrifugal electrostatic spinning technology, and depositing the heating layer fibers on a cooling layer fiber membrane. The Janus polylactic acid fiber membrane prepared by the preparation method disclosed by the invention has cold and hot dual functions, and the temperature adjusting range is widened. The two-way temperature adjusting mechanism can reduce the body surface temperature in a hot environment, heat is generated in a cold environment to meet the heat requirement, and the heat comfort requirement of a human body in different seasons is met.

The invention relates to a salt-scale-resistant anoxic TiO2 ceramic photo-thermal evaporation material with a vertical pore structure and a preparation method of the salt-scale-resistant anoxic TiO2 ceramic photo-thermal evaporation material. The salt-scale-resistant anoxic TiO2 ceramic photo-thermal evaporation material with the vertical pore channel structure is rutile phase anoxic TiO2 with a non-stoichiometric ratio, the chemical composition is TiO2-x, and x is more than 0 and less than 2; the photo-thermal evaporation material has a three-dimensional macroscopic porous structure formed by a direct-writing 3D printing technology, and an included angle between a pore channel in the three-dimensional macroscopic porous structure and a normal of an evaporation surface is 90 degrees.

A heat collector includes a body including a hollow portion extending from a first end to a second end of the body and being a metal-extruded body having a light-receiving surface to receive sunlight, a pair of lids adjacent to the first end and the second end and covering the hollow portion, an inlet located in one of the pair of lids to allow a heating medium to enter the hollow portion, and an outlet located in one of the pair of lids to allow the heating medium to exit the hollow portion.

The invention relates to the field of air hydrogen production, and provides an air hydrogen production material, a preparation method and application. The invention discloses a material for producing hydrogen from air, graphene aerogel and an MOF material, the graphene aerogel can absorb solar energy and convert the solar energy into heat energy, and the MOF material can adsorb water vapor in the air and catalyze a reaction for producing hydrogen under the illumination of the sun. The preparation method of the air hydrogen production material comprises the following steps: preparing a precursor solution containing graphene oxide, a polymer binder and an MOF material as required to form a solid compound, and then carrying out vacuum freeze-drying reduction treatment. The material can adapt to different application scenes, realizes distributed hydrogen production, and is suitable for efficient hydrogen production in diversified environments.

The invention discloses a solar low-heat-value heat storage heating system. According to the invention, through the AI prediction sub-module of the intelligent heat energy allocation module, the matching precision of energy supply and demand is significantly improved. The system can collect various data such as meteorological parameters, historical loads and heat storage states in real time, heat supply requirements, solar input fluctuation and heat storage efficiency are accurately pre-judged through feature extraction and multi-model prediction, and prediction results are continuously corrected through error calibration. The system can know how much heat is needed and how much solar energy can be provided in advance, so that energy flow in heat collection, heat storage and heat supply links is more reasonably allocated, the situation of heat waste or insufficient supply is reduced, the self-adaptive learning sub-module effectively strengthens the long-term operation capacity of the system, the system achieves self-learning, and the energy utilization rate of the system is improved. The operation stability is kept, the energy efficiency can be continuously optimized along with the external environment, more energy is saved after long-term use, and more convenience and rapidness are achieved.

The invention discloses an adjustable solar photovoltaic and photo-thermal integrated device, and relates to the technical field of solar energy utilization, the adjustable solar photovoltaic and photo-thermal integrated device comprises a fixed frame and a bottom frame, a solar cell panel, a heat exchange assembly and a heat preservation pad are arranged in the fixed frame, and a rotating assembly used for adjusting the angle of the fixed frame is arranged at the top of the bottom frame. The rotating assembly comprises a first vertical plate and a second vertical plate which are fixedly connected to the outer wall of the top of the bottom frame, a first motor is fixedly connected to the outer wall of one side of the first vertical plate, and the output end of the first motor is fixedly connected to the outer wall of one side of the fixing frame. According to the invention, the orientation of the solar cell panel can be accurately adjusted according to the change of the sunlight angle in different time periods, so that the solar cell panel always keeps the optimal light receiving angle, the solar energy capturing efficiency of the solar cell panel is improved, and compared with a traditional fixed-angle device, the photovoltaic power generation capacity can be remarkably increased; and the efficiency of converting solar energy into electric energy is effectively improved.

The invention provides a solar absorber with a multilayer film structure, and belongs to the technical field of solar absorption devices, the structure of the solar absorber is a multilayer Fabry-Perot resonance unit formed by alternately stacking metal layers and dielectric layers, the metal layers are used as substrates, and the dielectric layers are used as uppermost protective films; the material of the metal layer is TiN, and the material of the dielectric layer is SiO2; the Fabry-Perot resonance unit is composed of a TiN layer serving as a reflecting layer and a SiO2 layer serving as a transparent layer; an optical resonant cavity is formed between every two reflecting layers; multiple times of reflection, interference and absorption of light can be achieved through superposition of multiple unit film layers and based on the Fabry-Perot resonance principle, the reflection spectrum of the multi-layer film solar absorber within the range of 0.38-0.78 microns (visible light wave band) is changed by changing the thickness of SiO2 at the bottommost layer, the multi-layer film structure shows different colors, and the multi-layer film solar absorber has the advantages of being capable of achieving multi-layer film solar absorption. The optical camouflage device can be applied to different environments such as deserts, oceans and jungles.

The present disclosure provides a solar reactor, comprising: a main body, wherein a reaction chamber is defined within the main body, and the main body is provided with a light-transmitting port suitable for accommodating incident light formed by light rays collected from outside the reaction chamber to enter the reaction chamber, wherein the incident light is dispersed within the reaction chamber to form divergent light that is dispersed within the reaction chamber; and a solid component, disposed within the reaction chamber, and provided with a protrusion protruding toward the middle of the reaction chamber, wherein at least a portion of a light-facing surface of the protrusion facing the divergent light is configured to form an angle other than 90° with the projection direction of the divergent light, so that the divergent light extends along the thickness direction of the solid component; wherein the solid component is made of a material used as an oxygen carrier or catalyst in a chemical reaction using solar energy as a heat source.

The invention discloses a high-entropy nitride photothermal conversion film, a preparation method and an inverted solar evaporation water treatment device. The high-entropy nitride photothermal conversion film is composed of a high-entropy nitride coating, a transition layer and a substrate, the high-entropy nitride coating is (CrNbTiZrMo) Nx, and x ranges from 10 to 30; the thin film absorbs solar energy and efficiently converts the solar energy into heat energy, the heat energy is transmitted to hydrogel / aerogel to drive water to be efficiently evaporated, steam is collected from the bottom after being condensed, a traditional top light-transmitting cover plate is not needed, 30% of optical loss is reduced, the energy efficiency is improved to 85% (traditionally 58%), and the photo-thermal temperature of 70 DEG C can be achieved under irradiation of standard sunlight (AM 1.5 G). The temperature is far higher than that of other systems such as TiZrNbN (only 38.8 DEG C); the device adopting the film is simple in structure, easy to modularize and suitable for seawater desalination, high-salinity wastewater treatment and other scenes, and has the advantages of low energy consumption, environmental protection, low cost and the like.

The invention discloses an efficient salt elimination three-dimensional porous solar evaporator and preparation and application thereof. The evaporator is in an inverted cone shape. The evaporator comprises an efficient salt elimination porous foamy copper framework and a water supply layer attached to the outer side of the efficient salt elimination porous foamy copper framework; the efficient salt elimination porous foamy copper framework is a porous foamy copper framework which is sequentially subjected to alkaline solution wet oxidation treatment, graphene oxide deposition treatment and sodium polystyrenesulfonate soaking treatment. According to the efficient salt elimination three-dimensional porous solar evaporator, wet oxidation treatment of the alkaline solution brings super hydrophilicity to the evaporator, and evaporation enthalpy of water is reduced; the deposited graphene oxide can realize broadband light absorption, and provides a space for vapor diffusion and diffuse reflection of incident light in the porous skeleton; the evaporation area of water is enlarged through the inverted cone structure and the stacked framework; sO3 ionized from sodium polystyrenesulfonate is beneficial to repelling salt ions in main water, precipitation of salt crystals on the surface of the evaporator is reduced, and the application prospect is good.

The invention relates to a salt-resistant biomass interface evaporation material as well as a preparation method and application thereof, and relates to the technical field of interface evaporation materials. The preparation method comprises the following steps: mixing sunflower fiber dispersion liquid, polyvinyl alcohol and carbon-containing molybdenum disulfide, then adding glutaraldehyde, then carrying out liquid nitrogen freezing and freeze drying, sequentially soaking with a tannic acid solution, a calcium chloride solution and a ferric chloride solution, and then carrying out freeze drying. Natural sunflower fibers are used as a main framework, cotton is used as a supporting material, carbon-containing MoS2 is prepared and crosslinked with polyvinyl alcohol, a hydrophilic functional layer is constructed on the surface of the material through tannic acid, and the tannic acid is coordinated and complexed with Ca and Fe < + >, so that a more stable hydrophilic complexed coating is formed on the surface of the material; the surface wettability and the water conveying capacity of the material are further improved, meanwhile, salt crystal deposition and precipitation in the seawater evaporation process are effectively inhibited, and the oxidation resistance and the seawater corrosion resistance of the material are improved.

The invention provides a dark metal modified lithium orthosilicate-based thermochemical heat storage material as well as a preparation method and application thereof, and belongs to the technical field of energy and material science. The components of the heat storage material comprise lithium orthosilicate and dark metal, the proportion of the dark metal in the heat storage material is 2-10 mol%, and the source of the dark metal comprises one or more of manganese dioxide, ferric oxide, nickel oxide and copper oxide. Metal ions introduced into the obtained dark metal modified lithium orthosilicate-based thermochemical heat storage material have the effects of promoting the ion migration rate and resisting material sintering, and specifically, the heat storage density and the cycling stability of the material are remarkably enhanced. In addition, due to the introduction of the dark metal oxide, the color of the heat storage material is remarkably deepened, the solar spectrum absorptivity is greatly improved, the light absorption performance of the material is greatly enhanced, and the heat storage material has higher photo-thermal conversion efficiency and is more suitable for a concentrating solar energy storage system.

The invention provides a reflector and a solar thermal power generation device, and relates to the technical field of solar thermal power generation. The reflecting mirror comprises a base which comprises a support and a mirror bracket, and the support is connected with the mirror bracket; the mirror body is arranged on the mirror frame and comprises a reflecting layer and a conversion layer which are connected, the reflecting layer is stacked on the conversion layer, the reflecting layer is used for reflecting light rays, and the conversion layer is used for converting light energy into heat energy and transmitting the heat energy to the reflecting layer. The defrosting efficiency can be improved.

The invention relates to the technical field of photovoltaic glass, and discloses a composition for photovoltaic glass, the photovoltaic glass and a preparation method and application of the photovoltaic glass. Based on the total weight of the composition, the composition is prepared from the following components in percentage by weight: 65 to 75 percent of SiO2, 0.5 to 0.9 percent of Al2O3, 13 to 15 percent of Na2O, 0.02 to 0.2 percent of K2O, 9 to 12 percent of CaO, 2 to 5 percent of MgO and 0.2 to 0.9 percent of compound clarifying agent, the composite clarifying agent is a combination of potassium bifluoride, potassium nitrate, sodium pyroantimonate, sodium sulfate and carbon powder. The photovoltaic glass prepared from the composition provided by the invention has better clarification effect, light transmittance and lower melting temperature, and can reduce energy consumption and improve production efficiency.

The invention provides a photovoltaic photo-thermal coordinated utilization system, which comprises two modular integrated structures: a tubular assembly integrated system is composed of a plurality of tubular assemblies connected in parallel, and is sequentially provided with a packaging protection layer, a flexible semitransparent photovoltaic cell layer, a selectable spectrum selective functional layer, a heat collection tube and a heat collection medium from outside to inside; the stacked photovoltaic-heat collector system sequentially comprises a rigid semitransparent photovoltaic battery assembly layer, a supporting frame, a tubular heat collector array and the like from top to bottom. Through a spectrum gradient utilization mechanism, visible light is used for photovoltaic power generation, infrared light and ultraviolet light are used for photo-thermal collection, dynamic energy distribution is achieved in combination with a coordination control system, the comprehensive efficiency per unit area can be improved to 80% or above, and the system is suitable for multiple scenes such as household hot water and industrial heat supply and has high weather resistance and economical efficiency.

The invention discloses a heat collection and heat removal integrated energy-saving enclosure structure and a heat collection and heat removal adjusting method thereof. In the structure, a roof subsystem comprises a roof radiation layer, a roof structure layer, a cavity located between the roof radiation layer and the roof structure layer, and a communicating device used for achieving air circulation and isolation between the indoor space and the cavity; the roof radiation layer comprises a plurality of inclined and side-by-side double-side shutter radiation units, each double-side shutter radiation unit comprises a condensation pipe, a central pipe rotationally sleeving the condensation pipe and shutter plates arranged on the two sides of the central pipe, one side of each shutter plate is provided with a sky radiation cooling material, and the other side of each shutter plate is provided with a solar heat collection material; the wall subsystem comprises a wall and evaporation pipes arranged in the wall, the upper ends of the evaporation pipes are in butt joint with the lower ends of the corresponding condensation pipes, and the evaporation pipes are used for storing heat-conducting media capable of absorbing heat and evaporating. Natural energy can be fully utilized in summer and winter to meet the cold and hot requirements, and the complexity and cost of the system are reduced.

The invention discloses a solar spectrum frequency division combined heat and power generation system and an operation method, and relates to the technical field of renewable energy sources, and the method comprises the following steps: S001, building a coupling analysis baseline among irradiation parameters, heat distribution and optical characteristics, collecting the real-time temperature data and light beam wavefront information of a spectrum frequency divider under the condition of sun illumination, and calculating the real-time temperature data and light beam wavefront information of the spectrum frequency divider; and generating an estimated atlas of refractive index gradient distribution based on a thermally induced refractive index change rule. Through heat, light and force coupling control, accurate prediction, real-time identification and dynamic correction of the thermal lens effect are achieved, a closed-loop feedback mechanism is established, stable alignment of photoelectric and photo-thermal paths is guaranteed, the system energy efficiency and operation reliability are effectively improved, and the problems of deviation, energy efficiency reduction and part damage caused by a thermal lens in the prior art are solved.

The invention relates to a bifunctional intercalation Ti3C2Tx composite photo-thermal material, an interface evaporator, a preparation method and application, PVDF is added into DMF for ultrasonic dispersion, then a Ti3C2Tx / carbon / cobalt composite photo-thermal material is added and continuously stirred until the Ti3C2Tx / carbon / cobalt composite photo-thermal material is uniformly dispersed, the obtained mixture stands, and bubbles are discharged; transferring the obtained black mixture into a glass culture dish, adding distilled water to immerse the black mixture to induce solidification, and forming a black blocky solid material; and after standing, soaking in distilled water, and forming the three-dimensional photo-thermal interface evaporator through a solvent exchange (DMF-water) process. An interface evaporator based on the Ti3C2Tx composite photo-thermal material has the evaporation rate of 2.00 kg.m <-2 >. H <-1 >, a photo-thermal runway prepared from the bifunctional intercalation Ti3C2Tx composite material shows excellent photo-thermal conversion efficiency, and snow can be rapidly melted and the surface of the runway can be dried under the simulation condition; the method has practical application value in solving the problems of water resource shortage and runway potential safety hazards.

The invention relates to the technical field of preparation of products for water treatment, in particular to a preparation method and application of an efficient PDA photo-thermal evaporation modified film, provides a method for co-depositing a PDA photo-thermal material in nanogel for the first time, and greatly improves the load density of the PDA in unit volume, so that the efficient PDA photo-thermal evaporation modified film is prepared. When the photo-thermal evaporation film prepared by the method is actually used, the polydopamine photo-thermal evaporation modified film is obliquely placed at an angle of 45 degrees with the horizontal plane, the photo-thermal conversion efficiency under the condition of one solar illuminance (1kW. M <-2 >) is 91.01-114.10%, the photo-thermal evaporation capacity is 1.34-1.68 kg.m <-2 >. H <-1 >, and the problem that in the prior art, most of the photo-thermal evaporation films take PDA as an additive, and the photo-thermal evaporation efficiency is low is solved. The invention solves the technical problems that the existing PDA photo-thermal evaporation film is poor in evaporation performance due to the fact that the existing PDA photo-thermal evaporation film is used for bonding high-absorbance high-molecular or inorganic materials, and the photo-thermal evaporation performance of the existing PDA photo-thermal evaporation film is rarely deeply studied, so that the development of the PDA in the photo-thermal evaporation field is limited.

The invention provides a two-dimensional ordered conductive polymer film as well as a synthesis method and application thereof. The synthesis method comprises the following steps: adding an oxidant solution into a reaction container, then adding a monomer solution while stirring, and fully and uniformly mixing to obtain a reaction solution; taking a substrate material, placing the substrate material in parallel to the liquid level of the reaction liquid, enabling the substrate material to float on the liquid level of the reaction liquid, then standing and reacting for a period of time, and attaching the substrate material on an interface where the liquid level of the reaction liquid is in contact with the substrate material to generate a uniform two-dimensional ordered conductive polymer film. The method is suitable for preparation of ordered conductive macromolecules subjected to oxidation-reduction polymerization, and has very high universality. The prepared conductive polymer film has excellent photo-thermal conversion performance, and has wide application prospects in the fields of smart buildings, energy management and the like.

The invention provides a solar heat absorber reliability analysis method and system, and belongs to the technical field of tower type solar heat absorbers, and the method comprises the following steps: obtaining the energy flux density distribution of the surface of a solar heat absorber; a simplified heat absorber model is constructed, specifically, the multiple heat absorption pipes are simplified into panels, the total length of the panels is made to be equal to the length of a pipe panel, the thickness of the panels is made to be equal to the wall thickness of the heat absorption pipes, and the total area of the panels is made to be equal to the total circulation area of the multiple heat absorption pipes; loading the energy flow density distribution on the surface of the simplified heat absorber model, interpolating the energy flow density distribution in the length and height directions of the tube panel, and calculating the temperature distribution of the heat absorber model; and extracting the convective heat transfer coefficient of the corresponding position on the tube panel, applying the energy flux density to the heating surface of the heat absorption tube, calculating the equivalent stress and equivalent strain of the heat absorption tube, calculating the total damage value of the heat absorption tube, and analyzing whether the heat absorber fails or not according to the total damage value. The reliability of the heat absorber can be accurately evaluated.

The present invention provides a tower-type solar energy absorber with a load tooth profile absorption layer, which includes a tubular absorber group with a mesoscopic scale tooth profile absorption layer on its surface, a metal heat conduction screen coated with a heat absorption coating closely attached to the backlight side of the absorber, and a lighting window at the opening of the absorber group. Sunlight is reflected and concentrated onto the surface of the tubular absorber by the mirror field. The solar energy is absorbed by the tooth profile absorption layer and transferred to the working medium in the tube. At high temperatures, part of the thermal radiation flow of the absorber itself is blocked by the tooth profile structure during the emission process and is absorbed again, effectively reducing the dissipation of thermal radiation and improving the conversion efficiency. Part of the sunlight on one side of the lighting window is concentrated by the mirror field onto the lighting opening and enters the cylindrical heat conduction cavity on the backlight side of the absorber tube group. Its energy is absorbed by the heat absorption coating on the surface of the heat conduction screen and transferred to the backlight side of the absorber tube group, improving the uniformity of the heat flow distribution on the light-facing and backlight sides of the tubular absorber and increasing the service life of the solar energy absorber.

The invention belongs to the technical field of photo-thermal water and power cogeneration, and particularly relates to a preparation method of super-hydrophilic photo-thermal carbon fiber cloth and a water photovoltaic power generation sheet. The preparation method comprises the following steps: dispersing photo-thermal conversion particles into a sodium dodecylbenzene sulfonate solution to obtain a photo-thermal conversion coating, soaking carbon fiber cloth into the photo-thermal conversion coating to enable the photo-thermal conversion particles to be attached to the carbon fiber cloth to obtain the photo-thermal carbon fiber cloth, and drying the photo-thermal carbon fiber cloth to obtain the photo-thermal carbon fiber cloth. And then the surface of the photo-thermal carbon fiber cloth is coated with a thermoplastic polyurethane solution to improve the hydrophilic property of the photo-thermal carbon fiber cloth, and therefore the super-hydrophilic carbon fiber cloth with the high photo-thermal conversion performance is prepared. In the photo-thermal evaporation process, different photo-thermal conversion particle loading capacities of the carbon fiber cloth present different evaporation rates, different thermoplastic polyurethane solution brushing times of the carbon fiber cloth present different contact angles and interface evaporation temperatures, the generating capacity of the water photovoltaic power generation sheet is tested, and finally efficient photo-thermal water-power cogeneration application is achieved.

The invention discloses a preparation method of salt crystallization prevention aerogel with a vertical microchannel structure. The preparation method comprises the following steps: step 1, preparing a PPy-PDA composite photo-thermal material; step 2, preparing a PVA / HPC solution; step 3, preparation of a PVA / HPC coated PPy-PDA precursor solution; and step 4, preparing the PVA / HPC coated PPy-PDA composite aerogel with the vertical micro-channel structure. The salt crystallization prevention aerogel with a vertical micro-channel structure is prepared by utilizing a directional freezing and chemical cross-linking technology, the salt crystallization prevention aerogel has excellent photo-thermal response capability and energy conversion efficiency, and the vertically arranged micro-channel structure can promote rapid directional transportation of moisture and salt ions and inhibit salt accumulation and crystallization; meanwhile, the chemical crosslinking strategy enhances the mechanical stability and durability of the gel network. The preparation process is controllable, and the material is green and environment-friendly and can be applied to the field of solar interface evaporation desalination of high-salinity wastewater.