53results about How to "Improve solar energy utilization efficiency" patented technology

The invention discloses a solar thermal membrane distillation device which sequentially comprises a water supply chamber, a steam chamber and a condensate water chamber from the left to the right. Anindependent solar-thermal evaporation material, a plurality of water vapor channels and a hydrophobic membrane are sequentially arranged in the steam chamber from the left to the right; the bottom ofthe independent solar-thermal evaporation material is inserted into the water supply chamber; and water in the water supply chamber is evaporated to form steam via the steam chamber and enter the condensate water chamber. The solar thermal membrane distillation device provided by the invention has the characteristics of being simple in structure and easy to operate, membrane pollution caused by direct contact of the supplied water and the membrane is avoided, the condensate water can be efficiently collected, light blocking problems of the condensate water and the steam are solved, and the stability and solar energy utilization efficiency of the solar thermal membrane distillation system are improved.

The invention discloses a preparation method of a porous nano silicon dioxide anti-reflection film. The preparation method comprises polishing, cracking and pore forming. The method comprises the following steps of: selectively etching a glass surface by using silicon dioxide saturated solution of fluosilicic acid; selectively etching calcium oxide, sodium oxide and metal oxide with high reflectivity on the glass surface; and forming a porous nano silicon dioxide anti-reflection film on the glass surface, thereby fulfilling the aims of reducing the reflectivity of the glass and improving the transmittance of the glass. The transmittance of the glass produced by the process can be increased by 2-5 percent; the preparation method has an obvious anti-reflection effect; and in addition, the glass produced by the process has an obvious anti-dazzle effect and an excellent protection effect on human eyes.

The invention relates to a multistage trapezoidal distiller for solar photo-thermal evaporation seawater desalination. The multistage trapezoidal distiller comprises a thermal insulation material, a photo-thermal conversion material, a multistage evaporation condensation chamber, a glass cover plate and a transparent heat storage material; the thermal insulation material and the photo-thermal conversion material are laid above seawater at the bottom of a first-stage evaporation and condensation chamber; the trapezoidal evaporation and condensation chamber is vertically divided into multiple stages of evaporation and condensation chambers by inclined glass cover plates; a water inlet and a water outlet are respectively formed in the upper end and the lower end of the glass cover plate. Themultistage trapezoidal distiller has the beneficial effects that the trapezoidal distiller is divided into multiple stages of evaporation and condensation chambers by the inclined glass cover plate; the photo-thermal conversion material is heated by illumination to evaporate seawater; steam is subjected to heat exchange and condensation through the inclined glass cover plate to form fresh water tobe collected, condensation latent heat heats seawater of the previous stage to be evaporated again to obtain steam, heat exchange and condensation are carried out on the glass cover plate of the previous stage to form fresh water to be collected, solar photo-thermal multistage evaporation seawater desalination is achieved, and higher solar utilization efficiency is obtained.

The invention discloses a preparation method of halogen bismuth oxide nitrogen fixation photocatalysts with a three-dimensional structure. The preparation method comprises following steps: 1, a glucose aqueous solution is prepared; 2, hydro-thermal reaction, washing, centrifugation, and drying are carried out; 3, an obtained product is added into an acetic acid aqueous solution, and magnetic stirring is carried out; 4, Bi(NO3)3 5H2O is added, after complete dissolving, a halogeno salt of the same molar amount is added so as to obtain a brown precipitate; and 5, drying and sintering are carriedout so as to obtain the halogen bismuth oxide nitrogen fixation photocatalyst with a three-dimensional structure. According to the preparation method, template method is adopted to prepare a plurality of nitrogen fixation photocatalysts, preparation technology is simple, energy consumption is low, different halogeno salts can be adopted to prepare samples of a three-dimensional structure respectively, product purity is high, the morphology is uniform, the dispersibility is excellent, the performance is stable, and the circulation performance is excellent.

The invention discloses a photovoltaic charging unit for an electric vehicle, and belongs to the technical field of solar power generation. The main structure of the photovoltaic charging unit comprises a photovoltaic cell, a charge-discharge controller, a station-mounted terminal, an inverter, an energy storage cell, a remote terminal, a charging port, a charging pile and a transformer/rectifier, wherein the charge-discharge controller is connected with the photovoltaic cell, the station-mounted terminal, the energy storage cell and the inverter separately through corresponding signal lines and wires; the charging pile is connected with the energy storage cell and the charging pile through wires; the station-mounted terminal and the remote terminal are in wireless communication; the input end of the transformer/rectifier is connected to a power grid while the output end of the transformer/rectifier is connected with the energy storage cell; and the input end of the inverter is indirectly connected with the photovoltaic cell through the charge-discharge controller while the output end of the inverter is connected with the power grid for supplying power for the power grid. The photovoltaic charging unit can convert solar energy into electric energy for storage and can be used for peak clipping and valley filling for the power grid so as to charge the electric vehicle or obtain electric energy from the electric vehicle; the electric energy interchange among electric vehicles can be realized; and in addition, remote control and a payment function for multiple kinds of electric charges can be realized as well.

The sun-driven adsorption type combined cooling, heating, power and water production system comprises a condenser, a central heat exchanger, an evaporator and a plurality of adsorption beds, each adsorption bed comprises a first heat exchange pipe, and a second heat exchange pipe correspondingly communicated with the first heat exchange pipe is arranged in the central heat exchanger; the central heat exchanger is used for externally supplying heat to form a heat supply module; a photovoltaic cover on the surface of the adsorption bed absorbs sunlight and outputs electric energy to form a power generation module; a steam outlet of the adsorption bed is communicated with a steam inlet of the condenser, the condenser is used for condensing water vapor into liquid water, and a first water outlet of the condenser is connected with the water collecting tank to form a water producing module; a second water outlet of the condenser is communicated with a water inlet of the evaporator, an expansion valve is arranged on a connecting pipeline, and a water outlet of the evaporator is communicated with a water inlet of the adsorption bed to form a refrigeration module. Multiple-effect output is achieved through the same set of system driven by solar energy and the method thereof, so that the living requirements of desert residents for cooling, heating, electricity and water are met.

The invention discloses a curved-surface photovoltaic panel which comprises a photoelectric conversion structure and an illumination adjusting structure at least. The photoelectric conversion structure comprises at least one arc-shaped conversion unit, the tile-type conversion unit includes a projection structure protruded from the photoelectric conversion structure towards the illumination adjusting structure, the conversion units are arranged in a array in which the edges of the arc-shaped structures are partially adjacent, and the conversion units and the illumination adjusting structures are laminated in parallel. The photovoltaic conversion structure composed of the arc-shaped conversion units is arranged, the effective work area in the unit area is increased, radiation can be dispersed effectively, the illumination adjusting structure with a unidirectional light transmission function is used cooperatively, unidirectional sunlight transmission is realized in use, scattering and reflection phenomena are reduced, the utilization efficiency of solar energy is high, the power generating efficiency is high, and the heat radiation performance is high.

The invention discloses hollow heat gathering glass. The hollow heat gathering glass comprises a first glass layer and a second glass layer spaced from the first glass layer. Sealing fixing pieces are arranged around the first glass layer and the second glass layer, and by means of the sealing fixing pieces, a sealed cavity is formed between the first glass layer and the second glass layer. The first glass layer comprises first tempered glass and first heat gathering glass. The second glass layer comprises second tempered glass and second heat gathering glass. A plurality of triangular cavities are evenly formed in the first tempered glass. A plurality of first hollow structures are evenly arranged on the first heat gathering glass. Crossed cavities are formed in the second tempered glass, and second hollow structures are evenly arranged on the second heat gathering glass. The sealed cavity is filled with dry gas or is in a vacuum state. The hollow heat gathering glass is simple in structure and light, particularly can improve the solar utilization efficiency, has good heat gathering and heat preservation effects for the indoor space and meets the actual use demands.

The invention belongs to the technical field of solar energy application, and provides a hook face reflection condensation solar energy photoelectric and photo-thermal spectrum division utilization apparatus. Light rays of different wavebands are focused on a solar photovoltaic power generation apparatus and a solar energy photo-thermal absorption apparatus by the apparatus respectively; the wavebands of high photoelectric conversion efficiency are focused on a solar energy photoelectric conversion apparatus; and wavebands of low photoelectric conversion efficiency are focused on a solar energy photo-thermal collecting apparatus, so that solar energy spectrum division utilization can be realized. The spectrum division utilization apparatus has the advantages of realizing photovoltaic power generation, avoiding heating of the photoelectric conversion efficiency to influence the conversion efficiency, and supplying heat and improving solar energy utilization rate.

A solar composite tube, including a solar vacuum tube having two open ends; a water path; an adsorbent; and an adsorbate. The solar vacuum tube includes an outer metal tube and an inner metal tube which are coaxially disposed inside the solar vacuum tube. The water path is formed between the outer metal tube and the solar vacuum tube; the adsorbent is disposed between the outer metal tube and the inner metal tube and is configured to exchange heat with water in the water path outside the outer metal tube; the inner metal tube includes a plurality of through holes; the adsorbate is disposed in the inner metal tube; and the adsorbate and the adsorbent form an adsorption-desorption working pair. The invention also provides a solar composite bed including a lower header, an upper header, and the solar composite tube.

The invention discloses a solar refrigeration system, which comprises a tank body for storing a heat-conducting medium, a drainage pipe connected with an opening of the tank body, and a return pipe connected with a return port of the tank body. The drainage pipe is connected with the return pipe through a plurality of groups of distribution branch pipes; the plurality of groups of distribution branch pipes are inserted into a solar island; the solar island consists of a plurality of solar reflecting devices; and at least two solar reflecting devices are inserted into each group of distribution branch pipes. The solar refrigeration system also comprises a heat exchange device, wherein the return pipe passes through the heat exchange device; an inlet of the heat exchange device is connected with a water tank through a water inlet pipe; an outlet of the heat exchange device is connected with a single-screw expander through a pipeline; and an air outlet of the single-screw expander is connected with an air conditioner through the pipeline. Due to heat exchange of the heat exchange device, the single-screw expander is pushed to work for refrigeration, and the solar refrigeration system has the advantages that: the solar energy utilization efficiency is high, and the solar energy can be converted into power.

The invention provides a weather-proof garden lamp for emergency use. The garden lamp comprises a top cover, a reflecting layer, a transmitting layer, a light emitting layer, a mosquito removing layer and a control layer arranged in sequence from top to bottom; the top cover is an inverted cone with a metal material, and is fixed on the reflecting layer; a solar panel and a feed port are arranged at the top of the top cover; a mosquito dispelling medicament chamber is arranged in the top cover; the feed port communicates with the mosquito dispelling medicament chamber; a set of through holes is formed in the upper part of the mosquito dispelling medicament chamber; and a set of first and second anti-reflection layers, a transition layer, a medium-effect self-cleaning anti-reflection layer, and a high-efficiency self-cleaning anti-reflection layer are alternately arranged at the top of the solar panel in sequence from bottom to top. The garden lamp is simple in structure, low in cost and high in utilization efficiency of solar energy; and on the one hand, an LED flashlight serves as a power supply of the garden lamp, is dismounted as a flashlight, and meanwhile, is excellent in mosquito dispelling and insect killing effect.