138results about How to "Improve light energy utilization efficiency" patented technology

The invention belongs to the field of microalgae cultivation, and particularly relates to a microalgae half-dry solid state adherent cultivation device for alternate illumination of bright and dark light. The microalgae half-dry solid state adherent cultivation device comprises a bracket system, an adherent cultivation unit, a speed regulating motor, a liquid supplement pipe, a liquid collection tank and a peripheral protection cover, wherein the adherent cultivation unit is arranged on the bracket system and is connected with the speed regulating motor; the liquid supplement pipe is arranged above the adherent cultivation unit, and the liquid collection tank is arranged below the adherent cultivation unit; the liquid collection tank is internally provided with a liquid circulating pump, a liquid supplement device and a carbon supplement device; the liquid circulating pump is connected with the liquid supplement pipe through a pipeline; and the peripheral protection cover is arranged on the periphery of the bracket system and the adherent cultivation unit; and the top surface of the protection cover is made of a light-passing material. The device utilizes the principle of bright and dark flashing light to dilute the bright light and improve the utilization efficiency of luminous energy, thereby improving the yield of microalgae biomass.

The invention discloses an inclined wave surface interfering system based on a fiber array type space point source array generator. The inclined wave surface interfering system can compensate for local gradients of free-form surface optical elements to reduce interference fringe density, enhance a dynamic range of a detector and achieve the measurement on the complex free-form surface optical elements. According to the inclined wave surface interfering system, an optical fiber array is used for replacing a lens array, and compared with the lens array, the optical fiber array is better in emergent spherical wave quality and controllable in emergent spherical wave divergence angle. Emergent light of all beams of optical fibers in the optical fiber array is led in by the optical fibers in a one-to-one correspondence mode, the light use efficiency is higher than that of an interfering system using the lens array, and meanwhile influences of most stray light can be removed. The on-off of each optical fiber can be controlled independently, and the gating of a point source does not need to be controlled by using a mask plate.

The invention discloses a three-dimensional cultivation method of interplanting soybeans and sorghums. The sorghums are planted prior to the soybeans; a strip-shaped open box with box face width of 120-135 cm is adopted; the sorghums are planted in wide and narrow lines; distances between the wide lines are 80-100 cm while distances between the narrow lines are 35-40 cm; 1 to 2 lines of soybeans are planted in the wide lines of the sorghums; distances between the soybeans and the sorghums are 35-50 cm; and distances between the soybeans in soybean zones are 30 cm. In the cultivation method disclosed by the invention, complementary spatial niche advantages of long-stalk crops sorghums and short-stalk crops soybeans are sufficiently utilized and a high and low scattered canopy architecture is formed in the field so that ventilation and light transmission in the field are enhanced and the light energy utilization efficiency is improved; and spaces between the wide lines of the sorghums and idle growing seasons after the sorghums are harvested are sufficiently utilized so that the land-use efficiency and the resource utilization rate are improved and both the production and the income are increased.

The invention relates to a method for modifying a photocatalyst TiO2 by using WO3 and a rare earth metal element La. The method comprises the following steps: dispersing a precursor tetrabutyl titanate into a solvent absolute ethyl alcohol, performing a hydrolysis reaction to obtain nanometer TiO2 particles, and introducing a semiconductor material WO3 and a rare earth metal element La in a reaction process, wherein the mol ratio of the Ti:WO3:La is 100:(0-10):(1-6), and the WO3-La/TiO2 nanometer compound photocatalyst is uniform in size, better in dispersity, free from toxicity and secondary pollution, low in price of raw materials and stable in source, simple in synthesis process without secondary pollution, low in price and stable in source of raw materials, simple in synthesis process without pollution, excellent in performance, and wide in application range, can be repeatedly used, can be conveniently prepared into a powdery coating or other types of green environmental-friendly material, is applied to pollution removal and purification of various environments, and has a wide practical application value in the aspect of preparation of a photoelectric material or photocatalysis material.

A corn and peanut complex three-dimensional ecological intercropping planting method relates to a planting method for corns and peanuts. The corn and peanut complex three-dimensional ecological intercropping planting method can solve the problems that in the mode of long continuous cropping of corns and peanuts, straw reapplication is difficult, planting is out-off-balance, physic and chemical properties of soil deteriorate, pests and diseases become serious, the investment is increased but the yield is not increased, row spacing configuration is not reasonable during the conventional intercropping between the corns and the peanuts, and the utilization of light and heat resources is low. The method includes the following steps of: 1) good seed selection; 2) land selection and soil preparation; 3) soil testing and formulated fertilization; 4) field arrangement optimization; 5) seeding and reasonable close planting; 6) fine field management; 7) straw reapplication; and 8) crop rotation, fallowing and land maintaining. Many years of tests show that the yield of the corns can be increased by 2.0% to 8.0% more than that of the conventional planting method; compared with the conventional planting method, the yield of the peanuts can be increased by 1800 to 2200 Kg / hectare in average. The corn and peanut complex three-dimensional ecological intercropping planting method can be applied to the field of crop planting.

The invention belongs to the technical field of disease and insect pest prevention and control for fruit trees, and particularly relates to a fruit tree insect prevention technology by the aid of covers. The fruit tree insect prevention technology is characterized in that according to research findings on fruit setting characteristics of different varieties of fruit trees and activity rules of injurious insects on the fruit trees, when single fruit trees or in-line fruit trees or vast fruit trees which have different fruit setting characteristics and the injurious insects with different activity rules are specifically protected by the covers in proper periods, fruits can be isolated from the injurious insects and are effectively prevented from being harmed by the injurious insects, the photosynthesis of the fruit trees is hardly affected by selected cover materials, obvious influence of the selected cover materials on the temperature and the humidity required by each fruit tree is prevented, and a physical protection layer can be provided for each single fruit tree, the in-line fruit trees or the vast fruit trees; simple supports of the covers comprise upright columns (timber piles or steel tubes) and drawn steel wires, and the covers can be shifted as needed, can be operated easily and conveniently and are economical and durable. The fruit tree insect prevention technology has the advantages that dependence on pesticides for pest control and corresponding pesticide and labor cost input can be greatly reduced for fruit growers, the commodity rate of the fruits is increased, and the safety of the fruits is improved.

The invention discloses a method for in-situ preparation of a g-C3N4-TiO2 nano heterojunction photocatalyst film. The method comprises the following steps: taking a titanium sheet as a substrate, placing the titanium sheet in a mixed alkaline solution, carrying out solvothermal reaction, and then carrying out acidizing to obtain a TiO2 precursor nano film; then placing melamine and the TiO2 precursor nano film in a crucible together and carrying out microwave treatment at high temperature so as to obtain the g-C3N4-TiO2 nano heterojunction photocatalyst film in an in-situ preparation manner. The disclosed preparation method is simple and effective, preparation of g-C3N4 by high-temperature thermal polymerization of the melamine and high-temperature crystallization of a TiO2 precursor are combined, g-C3N4 grows on the surface of a TiO2 film in situ, and the obtained g-C3N4-TiO2 nano heterojunction photocatalyst composite film is stable in structure, uniform in surface, good in reusability and high in visible light catalysis efficiency.

The invention discloses a traffic signal lamp optical system realized by a laser light source and diffractive optical elements. The traffic signal lamp optical system includes a laser radiation light source, a first diffractive optical element and a second diffractive optical element; after a laser light field irradiates the first diffractive optical element, the first diffractive optical element realizes light field distribution of a laser signal lamp pattern shape; and the light field irradiates the second diffractive optical element; after being subjected to the optical modulation of the second diffractive optical element, the light field of the laser signal lamp pattern shape is transmitted along a specific angle region. With the traffic signal lamp optical system of the invention adopted, the signal lamp light emitting body realized by the laser radiation light source and the diffractive optical elements only can be seen by eyes in an angle region required by ''traffic signal lamp light field space angle distribution standard'', and light energy is not transmitted at the other regions, and the signal lamp light emitting body cannot be observed; light field energy is effectively utilized, and energy can be saved; and invalid light field distribution of all regions except a region specified by the ''standard'' can be eliminated thoroughly, and light pollution of signal lamps can be eliminated.

The invention provides an optical structure of an LED liquid crystal projector with a single polarization converter, comprising a lighting optical shaft and an imaging optical shaft which are vertical, wherein an LED, a collimating lens, a single transmission polarization converter, a lens array and a repeater light set are orderly arranged on the lighting optical shaft; an LCOS liquid crystal display, a PBS and a projection lens are orderly located on the imaging optical shaft; or the optical structure of the LED liquid crystal projector with the single polarization converter comprises two lighting optical shafts and an imaging optical shaft; the LED, the collimating lens and the single transmission polarization converter are orderly located on a first lighting optical shaft; the lens array and the repeater light set are orderly arranged on a second lighting optical shaft; the LCOS liquid crystal display, the PBS and the projection lens are orderly located on the imaging optical shaft; the first lighting optical shaft is parallel to the imaging optical shaft; and the first lighting optical shaft and the imaging optical shaft are both vertical to the second lighting optical shaft. The optical structure can convert the polarization light via the single transmission polarization converter or the single reflection polarization converter; and the optical structure is small in volume, high in light efficiency, low in cost and simple in machining and assembling.

The invention discloses a method for raising geese in a corn field. The method comprises the steps that firstly, corn is planted and goslings are prepared; the goslings are raised in the corn horn mouth stage at the end of June and certain feed is offered everyday in the stage; the goslings are raised in the corn field in the corn booting stage or the corn heading stage in the middle ten days of July; certain feed is offered so that growth of the goslings can be maintained and the feed is offered at night; geese are obtained in the corn milk ripe stage or the corn dough stage almost at the beginning of October and the corn is harvested ten days after the geese are obtained. According to the method for raising the geese in the corn field, corn cultivation and goose raising are organically combined and the cost benefits of the geese and life benefits of the corn are improved; the geese are obtained when the corn is mature, the goose raising time is prolonged, the difficulty of technology conduction is reduced, the yield of the corn is guaranteed, and the yield of the geese is increased as well. In addition, the production benefits, the land use efficiency, the light energy use efficiency, the production efficiency and the economic benefits are improved and the ecological benefits are good.

The invention relates to a method for realizing high absorption efficiency of an Nd:YAG laser for pumping light, which requires a laser diode pumping source, a laser resonant cavity and laser media Nd:YAG. The method is characterized in that an Nd:YVO4 medium is arranged on the rear of the laser media Nd:YAG along the transmission direction of the pumping light and used for sufficiently absorbing the pumping light, pumping light with the power within a wavelength absorption spectrum of 808.6nm of Nd:YAG crystal is completely absorbed after the pumping light passes through all the laser media Nd:YAG, and pumping light with the power out of the absorption spectrum of the Nd:YAG crystal enters Nd:YVO4 crystal and is absorbed by the Nd:YVO4 crystal. When the laser works, energy absorbed by the two types of crystal can be converted into oscillation laser with identical wavelengths, and high-power laser is outputted. Excellent heat conduction and an excellent photoelectric performance of the media Nd:YAG and the characteristic of broadband absorption of the medium Nd:YVO4 are utilized, the advantages of the media Nd:YAG and the advantages of the medium Nd:YVO4 are combined, and the shortcomings of the media Nd:YAG and the shortcomings of the Nd:YVO4 are overcome. By the aid of the method, the energy utilization rate of the pumping light can be increased by about 20%.

The invention utilizes a flat plate photobioreactor integrating a fuel battery to integrate microalgae high-density culture and irradiation hydrogen production so as to form an integrative hydrogen production system. Two sections of processes of microalgae culture and photosynthetic hydrogen production are generally divided in space time, and the cultured low-density frustule needs to be concentrated and then irradiated to produce hydrogen, so that the operations need to be respectively carried out in two photobioreactors. In the microalgae hydrogen production of the invention, the low-density microalgae is inoculated into a reactor, a culture mode of enriching carbon dioxide is utilized, the biomass required by the hydrogen production can be reached by short-term culture, then dark induction is carried out, and the operation can enter a continuous irradiation hydrogen production stage. The generated hydrogen gas can be integrated into a fuel battery on a reactor and is converted into electric energy, and the hydrogen production condition can be monitored at real time by the change of current. The invention combines the two sections of processes of the microalgae culture and the hydrogen production for the first time, utilizes the fuel battery to convert the hydrogen into the electric energy and provides reliable technical support for the large-scale microalgae hydrogen production.

The invention discloses a light-emitting diode (LED) cold light source lighting device which includes an LED chip. A radiator is fixed on one side of the LED chip, and a lens barrel is fixed on the other side of the LED chip. A first lens, a first space ring, a second lens, a second space ring, a third lens, a third space ring, a fourth lens and a press ring are sequentially disposed in the lens barrel along the emitting direction of light. Optical centers of the LED chip, the first lens, the second lens, the third lens and the fourth lens are all located on an identical optical axis. The first lens and the fourth lens are made of spherical optical glass, and the second lens and the third lens which are in the same structure are made of axially-symmetric aspheric optical plastics and placed along the optical axis in opposite directions. The LED cold light source lighting device has the advantages of being compact in structure, small in volume, high in light energy utilization ratio, developed in processing techniques and more suitable for application field where optical fiber bundle coupling lighting is needed.

The invention provides a solar boiler photo-thermal module, belonging to solar thermal utilization technology in the field of new energy or renewable energy. The existing solar thermal utilization technology is mainly capable of solving problems of high focusing ratio, high efficiency, large capacity and low cost. A single photo-thermal tube and a focusing cover are adopted for the photo-thermal module; the focusing cover is capable of tracking the sun in all directions, simplifies an automatic tracking device, sharply reduces the cost and fully improves the solar energy utilization efficiency; the focusing cover is a parabolic cylinder, and the opening area can be large; and the photo-thermal tube is arranged on the axis of the focus of the focusing cover, which is beneficial for improving the focusing ratio. The photo-thermal tube is a vacuum glass tube, and is internally provided with a heat absorption core pipe with a spiral medium passage so as to more uniformly absorb heat by the medium. The photo-thermal module is capable of not only providing hot water, but also providing steam with a certain temperature and a certain pressure; and moreover, a large unit capacity can be obtained to satisfy requirements of combined generation and supply of heat, electricity and cold.

The invention relates to a solar battery device, and discloses an air-cooled double-sided power generation solar battery assembly. The air-cooled double-sided power generation solar battery assembly comprises an assembly shell and battery panels, wherein one side of the assembly shell is provided with a plurality of battery panels which are fixedly arranged, the other opposite side is provided with a plurality of reflecting plates; and the assembly shell is provided with an air inlet and an air outlet. The reflecting plates are used for reflecting sunlight, the light is reflected to the reverse sides of the battery panels, two sides of the battery panels are enabled to receive illumination simultaneously, and the photoelectric conversion efficiency is improved. In addition, the assembly shell is provided with the air inlet and the air outlet, thereby being applied to ventilation and heat dissipation of the battery panels, and preventing the temperature of the battery panels from being too high to result in reduction of the battery efficiency.

The invention relates to a guide flow cylinder, a cylindrical bioreactor using the guide flow cylinder and a method for arranging the guide flow cylinder. The guide flow cylinder is a guide flow cylinder with the cylinder wall having an up and down run-through wave-shaped structure. According to the bioreactor, the guide flow cylinder with the cylinder wall having the wave-shaped structure is arranged in a bioreactor tank, and a top opening and a bottom opening formed by the wavy structure guide flow cylinder are outward-expanded trumpet-shaped openings. The method for arranging the wave-shaped structure guide flow cylinder comprises the following steps: 1, determining the ventilation volume or the ventilation speed of the cylindrical bioreactor according to cultured organism growth demands to obtain the ventilation ratio R:R which is equal to V1/V2, wherein V1 represents the volume of the gas inlet to the bioreactor per minute, and V2 represents the practical culture solution volume in the cylindrical bioreactor; and 2, determining the wave period number and the amplitude of the wave-shaped structure guide flow cylinder according to the obtained ventilation ratio, and arranging the guide flow cylinder in the bioreactor tank. According to the invention, the liquid mixing frequency can be increased, so the culture solution mixing effect in the bioreactor can be greatly improved, the luminous energy utilization efficiency is improved, and the gas-liquid mass transfer is substantially improved.

The invention discloses a no-tillage planting method of narrow-row soybeans. The method is implemented by virtue of the following technical scheme: (1) firstly, after winter harvest of conventional flat planting corns in the last year, directly crushing corn straws by virtue of corn harvesting machinery; (2) under the condition that any soil tillage is not carried out in the winter of the next year, directly sowing soybean seeds on corn stubbles at a row pitch of 19 cm by using a 19 cm narrow-row-pitch soybean no-tillage drill planter; (3) sowing at a sowing density of 550000 plants/hectare, and selecting a semi-dwarf lodging-resistant variety; (4) controlling and eliminating field weeds by applying a chemical weeding technology before and after sowing, managing the travelling path of the machinery in fields by applying a field traffic control technology, and preventing soil from being compacted at the same time; and (5) controlling soybean diseases and insect pests by adopting a comprehensive prevention and control technology during breeding. According to the method disclosed by the invention, no-tillage and returning straw mulching technologies are used for protecting soil, reducing soil erosion, improving the field fertility, avoiding straw burning in the field from polluting the environment, and increasing and reducing C emission.

The invention provides a homogeneous phase photo-oxidation device capable of degrading aromatic compound waste water continuously and a processing method thereof. The method comprises the following steps: delivering waste water to be processed into a regulator, mixing the waster water to be processed with a photocatalyst which is added from the upper part of the regulator, and regulating the pH value to 3-4; delivering the mixture into a stirring mixer, and mixing the mixture with H2O2 which is added from the upper part of the stirring mixer; and entering a photoreactor through a constant flow pump after mixing, and carrying out continuous photo Fenton oxidation and degradation to finally obtain qualified clarified water. By the adoption of the processing method provided by the invention, problems of pollution and regeneration of the catalyst cannot be caused, the catalyst and an oxidizer have no secondary pollution, the reaction is carried out at normal temperature and pressure, the occupied area is small, the operation is simple and convenient, the waste water processing capability and processing effect are adjustable and controllable, and the aromatic compound waste water which is difficult to degrade can be processed continuously; and the aromatic compound waste water which is difficult to degrade is processed continuously by adopting the processing method, and the removal rate of a parent aromatic compound is more than 98%.

The invention discloses a large-scale microalgae cultivation method, and belongs to the technical fields of microalgae cultivation and production. The method comprises the following steps: firstly, carrying out microalgae seed holding and enlarging cultivation in a laboratory, and then carrying out large-scale microalgae species solution cultivation in an outdoor light bioreactor; inoculating microalgae species solutions cultivated by using the light bioreactor into an outdoor runway culture pond, and carrying out large-scale microalgae cultivation in the runway culture pond; and finally obtaining microalgae biomass from the runway culture pond, and producing the microalgae biomass-based product. According to the method, through the combination of the outdoor light bioreactor and the runway culture pond, large-scale microalgae cultivation can be carried out; compared with the microalgae cultivated by a pure runway culture pond or a pure light bioreactor, the production cost is significantly reduced; and a whole set of complete process route is developed.