CN111792692B - Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration - Google Patents
Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration Download PDFInfo
- Publication number
- CN111792692B CN111792692B CN202010585681.8A CN202010585681A CN111792692B CN 111792692 B CN111792692 B CN 111792692B CN 202010585681 A CN202010585681 A CN 202010585681A CN 111792692 B CN111792692 B CN 111792692B
- Authority
- CN
- China
- Prior art keywords
- seawater
- stage
- light
- water
- hydrophilic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/11—Fluorescent material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/008—Mobile apparatus and plants, e.g. mounted on a vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S2023/86—Arrangements for concentrating solar-rays for solar heat collectors with reflectors in the form of reflective coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a solar seawater desalination device and a desalination method by using fluorescence to concentrate energy, wherein the device comprises a fluorescence concentrator, a hydrophilic material, a fresh water collecting pipe, a condensation cavity, light gas, a concentrated seawater cavity and the like; sunlight enters the fluorescent condenser from the upper part of the device, is reflected by internal quantum dots and transmitted along the horizontal direction, is output from the condenser at a set light outlet which is not coated with a reflective coating, directly heats seawater in the hydrophilic material arranged near the light outlet to generate evaporation, generated water vapor enters the condensation cavity, moves downwards under the action of light gas with low molar mass in the condensation cavity, is condensed into fresh water in the first-stage fresh water collecting tank, released latent heat heats seawater in the second-stage hydrophilic material to generate re-evaporation, and the processes are repeated, so that the multi-stage utilization of energy is realized. The seawater in the hydrophilic material is introduced by capillary effect and siphon effect, and realizes circulating motion under the action of gravity, thereby avoiding the formation of salt in the concentrated brine.
Description
Technical Field
The invention belongs to the technical field of solar energy utilization, and particularly relates to a solar seawater desalination device and method for supplying energy by fluorescence condensation.
Background
China and even many places in the world are lack of fresh water, and many water-deficient areas often have abundant solar energy and seawater (brackish water) resources, so the significance of utilizing solar energy to desalt seawater is self-evident.
In recent one hundred years, people make great efforts for seawater desalination by using solar energy, however, the solar seawater desalination technology cannot be popularized and utilized on a large scale until now. On the one hand, the economic efficiency is too poor to be compared with the traditional industrialized seawater desalination system. On the other hand, the existing solar seawater desalination technology has the following defects:
(1) parts in the system are seriously separated, the structure is complex, and the system is not beneficial to small-scale production and application. The heat collector, the heat reservoir, the pipeline, the heat exchanger and the seawater desalter are numerous in parts and separated from each other. The complex pipeline can increase the heat exchange resistance, and the system utilization efficiency is low.
(2) The light condensing device has the disadvantages of large volume, low light condensing efficiency, large occupied area and poor economy due to the fact that a tracking system is required to be arranged usually.
(3) The seawater desalination device is provided with large seawater capacity and high thermal inertia, reduces the evaporation efficiency and can corrode equipment.
(4) Seawater tends to not form an open flow during evaporation, and as the water vapor evaporates, the salt concentration rises and even crystallisation occurs.
(5) Positive water vapor flow direction restriction. The hot steam usually moves from bottom to top, and the sunlight is usually obtained from the top, so that how to change the flow direction of the water steam is important for better utilizing the solar energy.
Disclosure of Invention
In view of the above, the invention provides a solar seawater desalination device powered by fluorescence light concentration and a method thereof, wherein the device can float on the sea surface, directly produces fresh water by using collected solar energy, and is particularly suitable for small-scale and unit production.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the utility model provides a solar energy sea water desalination device of fluorescence spotlight energy supply, including fluorescence spotlight ware, infrared reflection film, quantum dot, reflective coating, the light-emitting window, the board absorbs light, the hydrophilic material of first order, the first order supporting network, first order fresh water collecting vat, the hydrophilic material of second level, the shell, the water-stop sheet, the body, dense seawater cavity, the filter screen, the body that absorbs water, the condensation chamber, the fresh water collecting pipe, the light gas, the condensation bottom plate, communicating pipe, second level fresh water collecting vat, the second level supporting network, the clear glass face, the seawater groove, the lug, wherein:
the fluorescent condenser comprises an infrared reflection film, quantum dots, a reflection coating and a light outlet;
the fluorescent condenser is hermetically connected with the shell of the seawater desalination device to form an independent cavity;
the fluorescent condenser is arranged on the upper surface, the bottom or the side surface of the solar seawater desalination device powered by fluorescent light condensation;
at least one stage of hydrophilic material is arranged in the condensation cavity, seawater is lifted from the water absorption body by each stage of hydrophilic material, the seawater is irradiated by light rays at a light outlet of the fluorescent condenser to generate water vapor, and the residual concentrated seawater on each stage of hydrophilic material flows into the concentrated seawater cavity;
the condensation cavity is filled with non-condensable light gas with the molar mass smaller than that of the water vapor, the water vapor is forced to flow downwards and is condensed to generate fresh water after meeting the fresh water collecting tank from top to bottom, the latent heat of condensation of the water vapor is used for heating the next-stage hydrophilic material tightly attached to the bottom of the fresh water collecting tank, the generated water vapor continues to flow from top to bottom, and finally the water vapor is condensed on the condensation bottom plate to generate fresh water, and the fresh water collecting pipe is used for collecting the fresh water;
the hydrophilic materials are supported and fixed by a support net;
seawater is arranged below the condensation bottom plate to condense water vapor;
the solar seawater desalination device is provided with a floating body which floats on the sea surface.
The fluorescent condenser enables collected sunlight to output the sunlight from a light outlet position of the uncoated reflective coating by adjusting the positions of the infrared reflective film and the reflective coating.
At least one stage of hydrophilic material is laid in the device, and the seawater is improved and transmitted by utilizing the capillary effect and the siphon effect to form open flow; by adjusting the positions of the water absorbing bodies and the concentrated seawater cavity of the first-stage hydrophilic material, the second-stage hydrophilic material and the other hydrophilic materials, the flow directions of the adjacent hydrophilic materials are opposite to each other, countercurrent heat exchange is formed, and the energy utilization efficiency is improved; a vertical impermeable water-stop sheet is arranged between the vertical water feeding surface and the vertical drainage surface of the adjacent hydrophilic materials; the adjacent hydrophilic materials are arranged in a clinging manner; the condensing cavity is filled with light gas with the molar mass smaller than that of water molecules, so that water vapor generated after the top fluorescent condenser receives light irradiation flows downwards, and fresh water is generated after gradual cooling.
The light gas is helium, methane or hydrogen.
A method of desalinating a fluorescent concentrator powered solar seawater desalination plant, the method comprising: the sunlight rays strike the fluorescent condenser, pass through the infrared reflection film, are absorbed by quantum dots in the fluorescent condenser and then are totally reflected, so that the rays are transmitted to the surface of the fluorescent condenser, which is not covered with the reflection coating, namely a light outlet, to form solar energy with high condensation ratio; at the moment, a light absorption plate tightly attached to a light outlet of the fluorescent condenser absorbs the gathered light to generate high-temperature heat energy, seawater on the hydrophilic material is heated to be evaporated, and the generated water vapor enters a condensation cavity; because the condensing cavity is filled with light gas with the molar mass lower than that of the water vapor, the water vapor is forced to move downwards, and the water vapor is condensed into fresh water when meeting the first-stage fresh water collecting tank; meanwhile, the first-stage fresh water collecting tank absorbs the condensation latent heat of the water vapor, the heat can heat the seawater tightly attached to the second-stage hydrophilic material at the bottom of the first-stage fresh water collecting tank to evaporate the seawater, the generated water vapor continues to move downwards, and the seawater is condensed on a condensation bottom plate at the bottom of the next-stage fresh water collecting tank or a condensation cavity to generate fresh water; at least one stage of hydrophilic material supported by a support net is arranged in the device, so that the condensation latent heat of water vapor can be utilized in multiple stages; under the influence of capillary action and siphon action and under the action of gravity, the hydrophilic materials at all levels enable seawater to form open flow, and the residual seawater after evaporation flows into the concentrated seawater cavity, so that the excessive concentration and salt separation of the seawater are avoided; the water absorption bodies and the concentrated seawater cavities of the adjacent hydrophilic materials are arranged in an opposite mode, the flow directions of seawater are just opposite, vertical impermeable water-stop sheets are arranged between the vertical water feeding surfaces and the vertical water discharging surfaces of the adjacent hydrophilic materials, and the vertical surfaces of the adjacent hydrophilic materials are tightly attached, so that countercurrent heat exchange is formed, the residual heat of the concentrated seawater in the hydrophilic materials is used for heating the fresh seawater drawn by the adjacent hydrophilic materials, heat regeneration is formed, and the energy utilization efficiency is improved.
The fluorescent condenser is internally provided with a hydrophilic material, seawater is lifted from the water absorption body, the fluorescent condenser is used for irradiating to generate steam, and the residual concentrated seawater flows into the concentrated seawater cavity; non-condensable light gases with molar mass smaller than that of the water vapor, such as helium, methane and hydrogen, are filled in the condensation cavity, so that the water vapor is forced to flow downwards and meet the fresh water collecting tank and the condensation bottom plate from top to bottom to be condensed to generate fresh water; the seawater desalination device is provided with a floating body which can float on the sea surface.
The fluorescent condenser emits light from the position which is not coated with the reflective coating by adjusting the positions of the infrared reflective film and the reflective coating; the portions not coated with the reflective coating may be discontinuous; the fluorescent condenser can be arranged on the left side, the right side, the upper side and the lower side of the solar seawater desalination device powered by fluorescent light condensation; the section of the fluorescence condenser can be one or more of rectangle, L shape and square; the fluorescent concentrator may be provided as a face of the chamber housing or separate from the chamber housing.
The seawater desalination device can be provided with one or more fluorescent condensers; the shell of the seawater desalination device is at least one of transparent or non-transparent; the outer side of the shell can be provided with a fluorescent condenser; when the fluorescent condenser is not arranged outside the shell, the heat preservation device can be arranged outside the shell.
At least one stage of hydrophilic material is laid in the device, and the seawater is improved and transmitted by utilizing the capillary effect and the siphon effect;
light gas with the molar mass smaller than that of water molecules is filled in the condensation cavity, so that water vapor generated after the irradiation of the top fluorescent condenser flows downwards and is cooled step by step to generate fresh water.
By adjusting the positions of the water absorbing bodies and the concentrated seawater cavity of the first-stage hydrophilic material, the second-stage hydrophilic material and the other hydrophilic materials, the flow directions of the adjacent hydrophilic materials are opposite to each other, countercurrent heat exchange is formed, and the energy utilization efficiency is improved; a waterproof water-stop sheet is arranged between the adjacent hydrophilic materials; adjacent hydrophilic materials are arranged in close proximity.
At least one layer of hydrophilic material is arranged in the device, the hydrophilic material is supported by the supporting net, the condensation latent heat in the flowing process of the water vapor is transferred to the adjacent hydrophilic material, the seawater on the adjacent hydrophilic material is evaporated into the water vapor, the water vapor continuously flows, the condensation latent heat of the water vapor is transferred to the next-stage adjacent hydrophilic material, the condensation latent heat of the water vapor is utilized in multiple stages, and therefore the solar energy utilization efficiency is improved.
When the fluorescent condenser is arranged at the top of the whole set of device, filling light gas with the molar mass less than that of water molecules; when the fluorescent condenser is arranged at the bottom of the whole device, light gas is not filled.
The fluorescent condenser can utilize sunlight incident at any angle, does not need to be provided with a solar tracking device when in use, and can effectively utilize direct and scattered rays. After the quantum dots in the condenser absorb incident light, infrared light with longer wavelength is emitted, due to the existence of the infrared reflection film and the reflection coating, the light can be transmitted to the side surface of the condenser after being reflected for multiple times, and the fluorescent condenser can be designed to be very thin, so that the condensing ratio is higher. The light rays collected by the light outlet of each fluorescent condenser can be used for heating seawater on the hydrophilic material, and a plurality of independent fluorescent-condensing energy-supply solar seawater desalination devices with the same structure can be arranged in an array manner. A floating body is arranged below the fluorescent condenser or on the shell of the seawater desalination device, so that the device floats on the sea surface for desalination, and the water absorption body can continuously absorb seawater from the lower part conveniently.
The solar seawater desalination device adopts the plane fluorescence light-gathering energy supply, the evaporation and condensation processes are finished in a closed space, the fluorescence light-gathering device is used for gathering incident light rays at any angle, the capillary action and the siphon action of the hydrophilic material are used for realizing open flow and local evaporation, the energy consumed for heating a large amount of seawater which cannot be directly evaporated is reduced, and sunlight is used for directly producing fresh water.
The fluorescent condenser can convert sunlight into fluorescent light with high quantum efficiency, and light is converged by utilizing the total reflection principle; and the fluorescent light-gathering technology can utilize the incident sunlight at any angle, and a solar tracking device is not required to be configured. The basic structure of the condenser is that fluorescent materials, such as organic dyes or quantum dots, are uniformly dispersed in a transparent carrier. Under solar radiation, the fluorescent substance first absorbs the incident light. Assuming that the direction of light emitted by the fluorescent material is spherically and uniformly distributed, the re-emitted fluorescent light can enter a light guide mode in the transparent carrier by virtue of the principle of total reflection under the condition of meeting a certain incident angle, so that the light is converged at the edge of the carrier. The light condensation ratio is high, the evaporation efficiency is high, and the structure is simple and compact.
A multi-fiber hydrophilic material (such as cotton cloth or jute cloth) with strong affinity or capillary action to water is selected, one end of the multi-fiber hydrophilic material is immersed in sea, and seawater is absorbed into the whole material under the capillary action of the fibers to form a uniform thin layer. The seawater in the porous hydrophilic material has little capacity, can be quickly evaporated after absorbing heat, and also avoids the heat loss of excessive seawater to other parts.
The beneficial effects produced by the invention are as follows:
(1) the device structure is light and handy simple and easy, and the installation and carrying of being convenient for, the flexibility is higher, both can float the use on the sea level, can also extract the sea water to carrying out sea water desalination subaerial, can arrange in order to improve the water yield with a plurality of sea water desalination device combinations simultaneously.
(2) The solar energy is collected by the solar fluorescent condenser, a sun tracking device is not required, the construction cost is low, and higher light collecting efficiency can be obtained; the fluorescent condenser system and the seawater desalination system are integrally designed, the fluorescent condenser can be arranged at the top, the bottom and the side of the seawater desalination device, solar energy collected by the light outlet is directly utilized to generate water vapor, and an evaporation and condensation process is carried out in a closed cavity formed by the fluorescent condenser and the shell, so that the resistance of heat and mass transfer is reduced.
(3) The seawater is drawn by the capillary suction force of the hydrophilic material, and is supported by the supporting net, so that pipeline transmission is omitted, and the seawater is drawn and transmitted by the siphon effect without pump equipment, so that the energy consumption is reduced; meanwhile, seawater in the hydrophilic material can be quickly evaporated after being heated, so that heat loss is reduced; and multi-stage hydrophilic materials can be arranged, so that the latent heat of condensation of water vapor generated by the previous stage of hydrophilic material is utilized to heat the next stage of hydrophilic material, and the energy utilization efficiency and the water yield are improved.
(4) By adjusting the positions of the water absorbing bodies and the concentrated seawater cavities of the first-stage hydrophilic material, the second-stage hydrophilic material and other hydrophilic materials at different stages, the flow directions of adjacent hydrophilic materials are opposite to each other, and countercurrent heat exchange is formed; and a waterproof water-stop sheet is arranged between the adjacent hydrophilic materials, and the adjacent hydrophilic materials are arranged in a clinging manner, so that the energy utilization efficiency is improved.
Drawings
FIG. 1 is a schematic structural cross-sectional view of a solar seawater desalination plant powered by fluorescence light-gathering;
FIG. 2 is a schematic sectional view of another fluorescent light-concentrating solar seawater desalination device shown in FIG. 1;
FIG. 3 is a schematic sectional view of another fluorescent light-concentrating multi-stage solar seawater desalination device shown in FIG. 1;
FIG. 4 is a schematic structural cross-sectional view of a solar seawater desalination plant powered by fluorescence light-gathering;
FIG. 5 is a schematic cross-sectional view of the partially enlarged structure of FIG. 4;
FIG. 6 is a schematic structural cross-sectional view of a solar seawater desalination plant powered by fluorescence light-gathering multi-surface energy.
The device comprises a fluorescent condenser, a 2-infrared reflection film, 3-quantum dots, a 4-reflection coating, a 5-light outlet, a 6-light absorption plate, a 7-first-stage hydrophilic material, a 8-first-stage supporting net, a 9-first-stage fresh water collecting tank, a 10-second-stage hydrophilic material, a 11-shell, a 12-water-stop plate, a 13-floating body, a 14-concentrated seawater cavity, a 15-filter screen, a 16-water absorbing body, a 17-condensation cavity, a 18-fresh water collecting pipe, a 19-light gas, a 20-condensation bottom plate, a 21-communicating pipe, a 22-second-stage fresh water collecting tank, a 23-second-stage supporting net, a 24-transparent glass surface, a 25-seawater tank, a 26-bump and a 27-water inlet pipe.
Detailed Description
The invention will be further illustrated with reference to the following examples and drawings:
as shown in fig. 1 to 6, the present invention provides a solar seawater desalination device powered by fluorescence light-gathering and a method thereof, the device includes a fluorescence light-gathering device 1, an infrared reflection film 2, quantum dots 3, a reflection coating 4, a light outlet 5, a light absorption plate 6, a first-stage hydrophilic material 7, a first-stage support net 8, a first-stage fresh water collection tank 9, a second-stage hydrophilic material 10, a housing 11, a water-stop plate 12, a floating body 13, a concentrated seawater cavity 14, a filter screen 15, a water absorption body 16, a condensation cavity 17, a fresh water collection pipe 18, a light gas 19, a condensation bottom plate 20, a communicating pipe 21, a second-stage fresh water collection tank 22, a second-stage support net 23, a transparent glass surface 24, a seawater tank 25, a bump 26, and the like; the fluorescent condenser 1 is hermetically connected with a shell 11 of the seawater desalination device to form an independent cavity; the condensation cavity 17 is internally provided with a hydrophilic material, seawater is lifted from the water absorption body 16 and is irradiated by the fluorescent condenser 1 to generate water vapor, and the residual concentrated seawater flows into the concentrated seawater cavity 14; non-condensable light gas 19 with molar mass smaller than that of the water vapor, such as helium, methane and hydrogen, is filled in the condensation cavity, so that the water vapor is forced to flow downwards and meets the first-stage fresh water collecting tank 9 and/or the second-stage fresh water collecting tank 22 and the condensation bottom plate 20 from top to bottom, and then is condensed to generate fresh water; the seawater desalination device is provided with a floating body 13 which can float on the sea surface.
The fluorescent condenser 1 emits light from the position (namely, the light outlet 5) of the uncoated reflective coating 4 by adjusting the positions of the infrared reflective film 2 and the reflective coating 4; the light outlets 5 not coated with the reflective coating 4 may be discontinuously distributed; the fluorescence condenser 1 can be arranged at the left side, the right side, the upper side and the lower side of the solar seawater desalination device powered by fluorescence condensation; the section of the fluorescence condenser 1 can be one or more of rectangle, L shape and square; the fluorescence concentrator 1 may be provided as one face of the chamber housing 11 or independently of the chamber housing 11.
The seawater desalination device can be provided with one or more fluorescent condensers 1; the shell 11 of the seawater desalination device is at least one of transparent or non-transparent; the fluorescent condenser 1 can be arranged outside the shell 11; when the fluorescent condenser 1 is not disposed outside the housing 11, a heat retaining device may be disposed outside the housing.
At least one stage of hydrophilic material is laid in the device, and the seawater is improved and transmitted by utilizing the capillary effect and the siphon effect;
the condensing cavity is filled with light gas 19 with the molar mass smaller than that of water molecules, so that water vapor generated after the top fluorescent condenser 1 irradiates flows downwards and is cooled step by step to generate fresh water.
By adjusting the positions of the water absorbing body 16 and the concentrated seawater cavity 14 of the first-stage hydrophilic material 7, the second-stage hydrophilic material 10 and other hydrophilic materials, the flow directions of adjacent hydrophilic materials are opposite to each other, countercurrent heat exchange is formed, and the energy utilization efficiency is improved; a waterproof water-stop sheet 12 is arranged between adjacent hydrophilic materials; adjacent hydrophilic materials are arranged in close proximity.
At least one layer of hydrophilic material is arranged in the device, the hydrophilic material is supported by the supporting net, the condensation latent heat in the flowing process of the water vapor is transferred to the adjacent hydrophilic material, the seawater on the adjacent hydrophilic material is evaporated into the water vapor, the water vapor continuously flows, the condensation latent heat of the water vapor is transferred to the next-stage adjacent hydrophilic material, the condensation latent heat of the water vapor is utilized in multiple stages, and therefore the solar energy utilization efficiency is improved.
When the fluorescent condenser 1 is arranged at the top of the whole device, light gas with the molar mass smaller than that of water molecules is filled; when the fluorescent condenser 1 is arranged at the bottom of the whole set of device, light gas is not filled.
The fluorescent condenser can utilize sunlight incident at any angle, does not need to be provided with a solar tracking device when in use, and can effectively utilize direct and scattered rays. After the quantum dots in the condenser absorb incident light, infrared light with longer wavelength is emitted, due to the existence of the infrared reflection film 2 and the reflection coating, the light can be transmitted to a specific light outlet of the condenser after being reflected for multiple times, and the fluorescent condenser can be designed to be very thin and has the thickness of 4-8mm, so that the condensing ratio is higher. A floating body 4 is arranged below the fluorescent condenser or on the shell of the seawater desalination device, so that the device floats on the sea surface for desalination, and the water absorption body can continuously absorb seawater from the lower part.
The embodiment is applied to the desalination method of the solar seawater desalination device powered by the planar fluorescent light-gathering energy, and the method comprises the following steps: the solar rays strike the fluorescent condenser 1, pass through the infrared reflection film 2, are absorbed by the quantum dots 3 in the fluorescent condenser and then are totally reflected, so that the rays are transmitted to the surface, which is not covered by the reflection coating 4, of the fluorescent condenser 1, namely a light outlet, and solar energy with high condensation ratio is formed; at the moment, the light absorption plate 6 tightly attached to the light outlet of the fluorescent condenser absorbs the gathered light to generate high-temperature heat energy, the seawater on the hydrophilic material is heated to be evaporated, and the generated water vapor enters the condensation cavity 17; because the condensing cavity 17 is filled with the light gas 19 with the molar mass lower than that of the water vapor, the water vapor is forced to move downwards, and when meeting the fresh water collecting tank, the water vapor is condensed into fresh water; meanwhile, the fresh water collecting tank absorbs the condensation latent heat of the water vapor, the heat can heat the seawater tightly attached to the second-stage hydrophilic material 10 at the bottom of the fresh water collecting tank to evaporate the seawater, the generated water vapor continues to move downwards and is condensed on the bottom condensation bottom plate 20 of the next-stage fresh water collecting tank or the cavity to generate fresh water; at least one stage of hydrophilic material supported by a support net is arranged in the device, so that the condensation latent heat of water vapor can be utilized in multiple stages; under the influence of capillary action and siphon action, the seawater forms open flow, and the residual evaporated seawater flows into the concentrated seawater cavity 14, so that the excessive concentration and salt precipitation of the seawater are avoided; the water absorbing bodies and the concentrated seawater cavities of the adjacent hydrophilic materials are arranged in an opposite mode, the flow directions of seawater are just opposite, impermeable water-stop plates are arranged on the vertical water feeding part and the vertical water discharging part between the hydrophilic materials, and the vertical surfaces of the adjacent hydrophilic materials are tightly attached, so that countercurrent heat exchange is formed, the residual heat of the concentrated seawater in the hydrophilic materials is used for heating the fresh seawater drawn by the adjacent hydrophilic materials, heat regeneration is formed, and the energy utilization efficiency is improved.
In one embodiment as shown in fig. 2, the water absorption body of the seawater desalination device is soaked in seawater, and the bottom of the shell is soaked in seawater, so that the hydrophilic material can absorb water conveniently. The device is filled with light gas with the molar mass lower than that of the water vapor, and the water vapor generated by the second-stage hydrophilic material is condensed in the second-stage fresh water collecting tank to generate fresh water. Here, the housing is immersed in seawater, and the height of the seawater desalination apparatus can be reduced as compared with the case of fig. 1 in which the condensing bottom plate is used to further condense water vapor to produce fresh water.
In one embodiment as shown in fig. 3, there are more than three stages of hydrophilic materials, and the water absorption bodies and the concentrated seawater chambers are alternately arranged at the bottom of the seawater desalination device, so that the latent heat of condensation of water vapor generated by heating the first stage hydrophilic material is used for heating seawater on the second stage hydrophilic material, and the latent heat of condensation generated by condensing the generated water vapor is used for heating seawater on the third stage hydrophilic material. Thus, by arranging the multi-stage hydrophilic materials, the condensation latent heat of the water vapor can be fully utilized. At hydrophilic material at each level and supporting network at each level and fresh water collecting vat at each level are equipped with communicating pipe 21 respectively, as in fig. 4, at first order hydrophilic material 7, first order supporting network 8, first order fresh water collecting vat 9, be equipped with communicating pipe 21 between the hydrophilic material 10 of second level, thus, through setting up communicating pipe 21 layer upon layer, finally just can collect the comdenstion water of fresh water collecting vat at each level in the fresh water collecting pipe 18 of lower extreme and concentrate the recovery, wherein, the fresh water collecting vat is as shown in fig. 3, still be equipped with second level fresh water collecting vat 22 below including first order fresh water collecting vat 9, analogize with this, still have the third level from top to bottom, fourth level etc.. In the same way, the corresponding support net is provided with a first-stage support net 8 and a second-stage support net 23, and by analogy, a third-stage support net and a fourth-stage support net are arranged from top to bottom. Correspondingly, except for the first-stage hydrophilic material 7 and the second-stage hydrophilic material 10, the third-stage hydrophilic material and the fourth-stage hydrophilic material are arranged from top to bottom in the same manner.
In one embodiment as shown in fig. 4 and 5, the fluorescent condenser is disposed at the bottom of the seawater desalination apparatus, and there is no need to fill light gas with a molar mass lower than that of water vapor, on one hand, the fluorescent condenser on the left side performs light convergence at the light outlet of the bottom of the seawater desalination apparatus after receiving solar light irradiation, on the other hand, the fluorescent condenser on the right side of the seawater tank and near the bottom performs light convergence at the light outlet of the fluorescent condenser on the right side of the seawater tank bottom after receiving solar light irradiation, and seawater in the seawater tank 25 can be supplied through the water inlet pipe 27 connected to the seawater tank 25. In addition, sunlight can also directly irradiate the seawater tank 25 to heat seawater. A first-stage hydrophilic material 7 is laid near the bottom of the seawater desalination device, and a bump 26 is arranged near the concentrated seawater cavity end, so that the first-stage hydrophilic material 7 is arched at the position, on one hand, the siphon effect is enhanced, and on the other hand, the seawater in the concentrated seawater cavity is prevented from being poured into the bottom of the seawater desalination device at the irradiation part of the fluorescent condenser. By irradiating the seawater at the bottom of the seawater desalination device, the generated water vapor moves from bottom to top, condenses after hitting the partition board at the bottom of the nearest second-stage hydrophilic material 10, and collects fresh water in the first-stage fresh water collecting tank 9 or/and the second-stage fresh water collecting tank 22. And the seawater on the second-stage hydrophilic material 10 generates water vapor after absorbing the water vapor condensation latent heat moving from bottom to top at the bottom, continues to move upwards, and is finally condensed on the top glass cover plate after the heat exchange between the multi-stage hydrophilic material and the condensation. In addition, the top glass cover plate is a transparent glass surface 24, the top water vapor can be continuously heated by utilizing natural light, the water is condensed into fresh water on the inner surface of the top glass cover plate and is gathered in a fresh water collecting tank at the bottom of the glass cover plate, and the temperature and the fresh water yield of the last-stage water vapor are improved. The method is convenient to implement, and the related device has a simple structure, can be constructed in a modularized manner and has higher flexibility.
In an embodiment as shown in fig. 6, the main difference from fig. 4 is the arrangement of the fluorescent light collectors, the fluorescent light collectors are L-shaped, light can be collected at the left side, and the light is collected at the light outlet upward at the bottom of the fluorescent light collectors by using a special L shape and total reflection, so that the light is collected at the light outlet upward at the bottom of the fluorescent light collectors, and the seawater at the bottom of the seawater desalination apparatus is heated to generate steam, which flows from bottom to top, and the left end of the hydrophilic material can pass through the perforations arranged on the L-shaped fluorescent light collectors, and the evaporated residual seawater flows into the concentrated seawater chamber 14, and is cooled step by step to generate fresh water after passing through the multi-stage hydrophilic material. The light outlet of the fluorescent condenser 1 can be discontinuous; the fluorescence condenser 1 can be arranged above, below and on the side of a solar seawater desalination device powered by fluorescence condensation; the section of the fluorescence condenser 1 can be one or more of rectangle, L shape and square; the fluorescence concentrator 1 may be provided as one face of the chamber housing 11 or independently of the chamber housing 11. Wherein, consistent with fig. 4 and 5, the seawater tank 25 is located at the right side of the seawater desalination apparatus, and the seawater in the seawater tank 25 can be supplied through the water inlet pipe 27 connected to the seawater tank 25. The fresh water collecting tank is shown in fig. 4, 5 and 6, and a second-stage fresh water collecting tank 22 is arranged above the first-stage fresh water collecting tank 9, and so on, and a third stage, even a fourth stage and so on are arranged from bottom to top. In the same way, the corresponding support net is provided with a first-stage support net 8 and a second-stage support net 23, and by analogy, a third-stage support net and a fourth-stage support net are arranged from bottom to top. Correspondingly, the first-stage hydrophilic material 7 and the second-stage hydrophilic material 10 are also correspondingly added with a third-stage hydrophilic material and a fourth-stage hydrophilic material from bottom to top in the same way.
The seawater desalination device can be provided with one or more fluorescent condensers 1; the shell 11 of the seawater desalination device is at least one of transparent or non-transparent; the fluorescent condenser 1 can be arranged outside the shell 11; when the fluorescent condenser 11 is not arranged outside the housing 11, heat-insulating cotton may be arranged outside the housing.
Therefore, the description of the embodiments of the present invention is not intended to limit the spirit and scope of the present invention, and any variations and modifications of the embodiments described herein will be apparent to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a solar energy sea water desalination device of fluorescence spotlight energy supply, a serial communication port, including fluorescence spotlight ware (1), infrared reflection film (2), quantum dot (3), reflection coating (4), light-emitting window (5), extinction board (6), first order hydrophilic material (7), first order braced net (8), first order fresh water collecting vat (9), second level hydrophilic material (10), shell (11), water-stop sheet (12), body (13), dense sea water chamber (14), filter screen (15), absorb water body (16), condensation chamber (17), fresh water collecting pipe (18), light gas (19), condensation bottom plate (20), communicating pipe (21), second level fresh water collecting vat (22), second level braced net (23), clear glass face (24), sea water groove (25), lug (26), wherein:
the fluorescent condenser (1) comprises an infrared reflection film (2), quantum dots (3), a reflection coating (4) and a light outlet (5);
the fluorescent condenser (1) is hermetically connected with a shell (11) of the seawater desalination device to form an independent cavity;
the fluorescence condenser (1) is arranged on the upper surface, the bottom or the side surface of the solar seawater desalination device powered by fluorescence condensation;
at least one stage of hydrophilic material is arranged in the condensation cavity (17), seawater is lifted by each stage of hydrophilic material from the water absorption body (16), the seawater is irradiated by light rays of the light outlet (5) of the fluorescent condenser (1) to generate steam, and the residual concentrated seawater on each stage of hydrophilic material flows into the concentrated seawater cavity (14);
the condensation cavity (17) is filled with non-condensable light gas (19) with the molar mass smaller than that of the water vapor, the water vapor is forced to flow downwards and is condensed to generate fresh water after meeting the fresh water collecting tank from top to bottom, the latent heat of condensation of the water vapor is used for heating the next-stage hydrophilic material tightly attached to the bottom of the fresh water collecting tank, the generated water vapor continues to flow from top to bottom, and finally the water vapor is condensed on the condensation bottom plate (20) to generate fresh water, and the fresh water is collected by the fresh water collecting pipe (18);
the hydrophilic materials are supported and fixed by a support net;
seawater is arranged below the condensation bottom plate (20) to condense water vapor;
the solar seawater desalination device is provided with a floating body (13) which floats on the sea surface.
2. The solar seawater desalination device powered by fluorescent light concentration as claimed in claim 1, wherein the fluorescent light concentrator (1) outputs the collected sunlight from the position of the light outlet (5) of the uncoated reflective coating (4) by adjusting the positions of the infrared reflective film (2) and the reflective coating (4).
3. The solar seawater desalination device powered by fluorescence light concentration as claimed in claim 1, wherein at least one stage of hydrophilic material is laid in the device, and seawater is raised and transported by capillary effect and siphon effect to form open flow; by adjusting the positions of the water absorbing bodies and the concentrated seawater cavities of the first-stage hydrophilic material (7), the second-stage hydrophilic material (10) and other hydrophilic materials, the flow directions of adjacent hydrophilic materials are opposite to each other, countercurrent heat exchange is formed, and the energy utilization efficiency is improved; a vertical impervious water-stop sheet (12) is arranged between the vertical water feeding surface and the vertical drainage surface of the adjacent hydrophilic materials; the adjacent hydrophilic materials are arranged in a clinging manner; the condensing cavity (17) is filled with light gas (19) with the molar mass smaller than that of water molecules, so that water vapor generated after the top fluorescent condenser (1) receives light irradiation flows downwards, and fresh water is generated after gradual cooling.
4. A fluorescent concentrator powered solar desalination plant as claimed in claim 1 or 3 wherein the light gas (19) is helium, methane, hydrogen.
5. The desalination method of a fluorescent light-concentrating powered solar seawater desalination plant as claimed in claim 1, wherein the method comprises: the sunlight rays strike the fluorescent condenser (1), pass through the infrared reflection film (2), are absorbed by quantum dots (3) in the fluorescent condenser and then are totally reflected, so that the sunlight rays are transmitted to the surface, not covered by the reflection coating (4), of the fluorescent condenser (1), namely a light outlet (5), and solar energy with high condensing ratio is formed; at the moment, a light absorption plate (6) tightly attached to a light outlet (5) of the fluorescent condenser (1) absorbs the gathered light to generate high-temperature heat energy, seawater on the hydrophilic material is heated to be evaporated, and the generated water vapor enters a condensation cavity (17); because the condensing cavity (17) is filled with light gas (19) with the molar mass lower than that of the water vapor, the water vapor is forced to move downwards and is condensed into fresh water when meeting the first stage fresh water collecting tank (9); meanwhile, the first stage fresh water collecting tank (9) absorbs the condensation latent heat of the water vapor, the heat heats the seawater tightly attached to the second stage hydrophilic material (10) at the bottom of the first stage fresh water collecting tank (9) to evaporate, the generated water vapor continues to move downwards and is condensed on a condensation bottom plate (20) at the bottom of the next stage fresh water collecting tank or a condensation cavity to generate fresh water; at least one stage of hydrophilic material supported by a support net is arranged in the device, so that the condensation latent heat of water vapor can be utilized in multiple stages; under the influence of capillary action and siphon action and under the action of gravity, the hydrophilic materials at all levels enable seawater to form open flow, and the residual seawater after evaporation flows into the concentrated seawater cavity (14) to avoid the overhigh concentration and the separation of salt of the seawater; the water absorption bodies and the concentrated seawater cavities of the adjacent hydrophilic materials are arranged in an opposite mode, the flow directions of seawater are just opposite, vertical impermeable water-stop sheets (12) are arranged between the vertical water feeding surfaces and the vertical water discharging surfaces of the adjacent hydrophilic materials and the vertical surfaces of the adjacent hydrophilic materials are tightly attached, so that countercurrent heat exchange is formed, the residual heat of the concentrated seawater in the hydrophilic materials is used for heating the fresh seawater drawn by the adjacent hydrophilic materials, heat regeneration is formed, and the energy utilization efficiency is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585681.8A CN111792692B (en) | 2020-06-24 | 2020-06-24 | Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585681.8A CN111792692B (en) | 2020-06-24 | 2020-06-24 | Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111792692A CN111792692A (en) | 2020-10-20 |
| CN111792692B true CN111792692B (en) | 2021-10-08 |
Family
ID=72803809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010585681.8A Active CN111792692B (en) | 2020-06-24 | 2020-06-24 | Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111792692B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023813B (en) * | 2021-05-07 | 2022-07-01 | 北京理工大学 | Self-irrigation marine floating type planting device based on solar distillation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10038107B2 (en) * | 2013-03-05 | 2018-07-31 | The Boeing Company | Enhanced photo-thermal energy conversion |
| CN105099358B (en) * | 2015-07-28 | 2018-06-05 | 深圳扑浪创新科技有限公司 | A kind of manufacturing method of quantum dot-doped type solar energy fluorescence concentrating generating system |
-
2020
- 2020-06-24 CN CN202010585681.8A patent/CN111792692B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111792692A (en) | 2020-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sangeetha et al. | A review on PCM and nanofluid for various productivity enhancement methods for double slope solar still: Future challenge and current water issues | |
| CN107089697B (en) | Floatation type solar energy sea water desalination apparatus | |
| CN111792693A (en) | Reverse mass transfer solar electricity-water co-production device for driving water supply through siphon effect | |
| CN102167413B (en) | A multiple-effect casing tube-type solar energy seawater desalination apparatus having a light-condensing function | |
| CN112978834B (en) | Solar seawater desalination device of water surface floating type condenser | |
| CN108925309B (en) | Self-water supply system for agricultural greenhouse | |
| CN212198580U (en) | Stepped distiller for solar photo-thermal evaporation seawater desalination | |
| CN104591327B (en) | Loop heat pipe formula cylinder type solar energy sea water desalination apparatus | |
| CN106396224A (en) | Micro-cavity type solar seawater desalination unit based on condensation | |
| CN111547802A (en) | Multistage ladder-shaped distiller and method for solar photo-thermal evaporation seawater desalination | |
| CN112340799B (en) | Double-sided heating type solar photovoltaic/thermal seawater desalination device | |
| CN111533198A (en) | Stepped distiller and method for solar photo-thermal evaporation seawater desalination | |
| CN110776034A (en) | Modularized solar distillation desalination device | |
| CN113896269A (en) | High-efficient solar energy sea water desalination device based on interface evaporation | |
| CN111792692B (en) | Solar seawater desalination device and desalination method with energy supplied by fluorescent light concentration | |
| CN113149105A (en) | Floating seawater desalination device based on radiation refrigeration-phase change cold storage | |
| CN111704187B (en) | Fluorescent light-gathering solar seawater desalination device | |
| CN111874982B (en) | Solar seawater desalination device with double condensers | |
| CN112902462B (en) | Device for collecting water from seawater by using solar energy | |
| Sun et al. | Optimal design for floating solar still by structural modification: A review | |
| CN107337244A (en) | A kind of bubbling liquid curtain integral solar sea water desalinating unit | |
| CN111847556B (en) | Solar distillation unit and distillation method | |
| CN113023811B (en) | Solar heat collection seawater desalination device with hydraulic telescopic driving reflecting mirror | |
| CN113028656B (en) | Solar heat collection device and sewage treatment method thereof | |
| CN211570155U (en) | Hemispherical solar still capable of receiving illumination at any angle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |