CN212864202U - Efficient solar seawater desalination device based on heat conduction technology heat recycling - Google Patents
Efficient solar seawater desalination device based on heat conduction technology heat recycling Download PDFInfo
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- 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
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- 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
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- 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
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Abstract
The utility model discloses a high-efficient solar energy sea water desalination device based on heat conduction technology thermal cycle utilizes, including printing opacity heat preservation, solar energy absorbed layer, heat preservation insulator, heat conduction distillation bed, heat conduction condensation layer, capillary imbibition layer, water-collecting body and insulation box, insulation box's inside is equipped with the heat preservation insulator, heat preservation insulator top is equipped with the printing opacity heat preservation, be equipped with the solar energy absorbed layer below the printing opacity heat preservation, be equipped with heat conduction distillation bed below the solar energy absorbed layer and extend to one side of heat preservation insulator and cover above that. The utility model discloses the beneficial effect who reaches is: the utility model discloses a heat conduction technology realizes thermal transfer and cyclic utilization, and diversified solar energy of receiving more probably, utilizes heat conduction technology to realize the condensation of bottom heating upper portion, is favorable to the vapor condensation, utilizes heat conduction technology to reduce condensation position temperature, improves the condensation effect, utilizes heat conduction technology to preheat the sea water, realizes thermal recycle, improves system efficiency.
Description
Technical Field
The utility model relates to a sea water desalination device, in particular to based on high-efficient solar energy sea water desalination device of heat conduction technology thermal cycle utilization belongs to sea water desalination device technical field.
Background
Fresh water is one of basic substances which depend on the survival and development of human society, and the underground fresh water which exists in rivers, lakes and can be directly utilized by human beings is less than 0.36 percent at present. The seawater which accounts for more than 97 percent of the total water of the earth cannot be directly drunk or irrigated due to high salinity, the rest less than 3 percent of fresh water is extremely unevenly distributed, wherein 3/4 is frozen in glaciers at two poles of the earth and in alpine regions, and the groundwater in the rest fresh water is 37 times more than the surface water. With the social and economic development and the acceleration of the industrialization process, the demand of human beings on fresh water resources is increasing day by day, and the situation of fresh water shortage is becoming more serious. Some island reefs, coastal saline-alkali areas and inland bitter-salt water areas lack fresh water for a long time, most rural laggard areas are difficult to obtain clean and drinkable clean water, and water shortage can occur due to pollution problems even in developed areas. Abroad, such as desert areas like middle east, etc., are more serious in water shortage. Surveys have shown that the global 1/3 population is affected by fresh water shortages. Considering the wide distribution of seawater and brackish water, the seawater desalination technology becomes one of the effective ways for solving the shortage of fresh water.
Sea water desalination technologies currently include reverse osmosis, multistage flash evaporation, solar distillation, and the like. Solar energy is used for distillation, steam is generated by solar energy heating, and fresh water is collected by condensation, so that the solar distillation device has the advantages of simplicity, convenience, low cost, wide application range and the like, and is particularly suitable for remote areas with inconvenient power supply and the like. Solar energy is the ultimate source of earth energy, the solar seawater desalination technology does not consume conventional energy, and has no pollution, safety and environmental protection, and the obtained fresh water has high purity and good prospect. However, the water production efficiency of the traditional solar distiller is low, about 35%, and the wide use of the traditional solar distiller is limited due to the influence.
The solar energy photo-thermal conversion is arranged on a gas-liquid evaporation interface for local heating evaporation, so that the solar energy evaporation efficiency can be greatly improved, and the solar energy evaporation system becomes an energy scientific research hotspot. However, if the steam directly takes away the heat after distillation, the heat generated by condensation cannot be recycled, and even if the solar energy is completely converted into the steam energy, the conversion efficiency is only 100 percent at most. If the latent heat (enthalpy) released by steam condensation can be recycled, the conversion efficiency is expected to be improved to be over 100 percent or even far more than 100 percent.
In 2019, researchers of the Shanghai university institute of refrigeration and low-temperature engineering, such as bamboo professor, Xuezhong primary and secondary professor team and Massachusetts' institute of science and technology have published the latest progress on ultra-high-efficiency solar seawater desalination research, and the experiment device creatively realizes 385% solar evaporation efficiency by adopting a local heating multi-stage solar distillation mode in combination with interface evaporation and multi-stage condensation heat recovery, which is about 2 times higher than the previous efficiency record. The related results are published in journal of Energy & Environmental Science in the top journal of Energy field.
However, it has been found by extensive analysis that the evaporation efficiency of the apparatus of this study is high, but it may be difficult to exert high efficiency in practical use. In order to realize multistage distillation and multistage condensation heat recovery, the research adopts a mode of receiving sunlight in the horizontal direction. Real sunlight is far lower than vertical illumination from morning to evening, if the total receiving rate of the device to sunlight is not high in practical use, even if the evaporation efficiency is high, the water production amount is limited. Moreover, the heat is transferred upwards by the device in the horizontal direction, and the efficiency is not high. The steam above the device is abundant, but the temperature is high, and condensation is not utilized. These factors combine to affect the efficiency of the fresh water production of the overall plant.
Generally, the sunlight is most sufficient in the vertical direction, and the hot steam goes upward, so it is desirable to achieve high efficiency in the production of water, receive the sunlight from the vertical direction, condense the upward steam upon cooling, and recycle the released heat. However, the practical implementation of the two devices arranged in the vertical direction will interfere with each other and is difficult to be compatible. Without the aid of new heat conducting technology, the traditional method cannot economically receive sunlight from the vertical direction and recycle condensation heat. This is also the reason why the studies of the Shanghai society have placed the sunlight receiving passage in the horizontal direction.
The utility model provides a with the help of new heat conduction technique, lead the below evaporation sea water through the heat conduction membrane with the solar heat that the top was received, let another heat conduction membrane contact sea water cooling and part arrange the evaporation blanket top in so that the steam that rises meets cold condensation, let the heat of condensation release to the sea water preheat simultaneously, realize the recovery and cyclic utilization of condensation heat, improve the evaporation efficiency of whole device, thereby solve the problem that the unable economy of the above-mentioned traditional approach solved
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide based on heat conduction technology thermal cycle utilizes high-efficient solar energy sea water desalination device.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model discloses a high-efficient solar energy sea water desalination device based on heat conduction technology thermal cycle utilization, including printing opacity heat preservation, solar energy absorbed layer, heat preservation insulator, heat conduction distillation bed, heat conduction condensation layer, capillary imbibition layer, water-collecting body and insulation box, the inside of insulation box is equipped with heat preservation insulator, heat preservation insulator top is equipped with the printing opacity heat preservation, be equipped with solar energy absorbed layer below the printing opacity heat preservation, be equipped with heat conduction distillation bed below the solar energy absorbed layer and extend to one side of heat preservation insulator and cover it on, heat preservation insulator bottom and its opposite side are equipped with the heat conduction condensation layer, the heat conduction distillation bed outside is equipped with capillary imbibition layer, capillary imbibition layer extends along the heat preservation insulator outside that covers heat conduction condensation layer and flagging to the sea water below the heat preservation insulator, water-collecting body is installed to heat conduction condensation layer lower part one side, the heat-conducting distillation layer is not connected with the heat-conducting condensation layer at the bottom, and seawater is filled in the lower part in the heat insulation box.
Preferably, the heat-conducting distillation layer and the heat-conducting condensation layer are made of graphene heat-conducting films or flexible heat-conducting films such as graphite heat-conducting films.
Preferably, the light-transmitting heat-insulating layer is made of a silicon dioxide aerogel material.
Preferably, each group of the light-transmitting heat-insulating layer, the solar energy absorbing layer, the heat-insulating body, the heat-conducting distillation layer, the heat-conducting condensation layer, the capillary liquid absorption layer and the water collecting body form a basic structural unit, a plurality of groups of the basic structural unit are arranged in parallel, and when the basic structural unit is installed, the heat-conducting condensation layer is installed on an inclined plane at one side close to the heat-conducting distillation layer of the previous basic structural unit.
Preferably, the solar energy absorption layer is made of a black paint material which can efficiently absorb solar heat and has little heat radiation.
Preferably, the heat insulation body and the heat preservation box are both made of water-impermeable heat preservation foam.
Preferably, the capillary liquid absorption layer is made of absorbent fiber lines.
Preferably, the water collecting body is made of a light pipe or a water-absorbing fiber line.
The utility model discloses the beneficial effect who reaches is: the utility model discloses a heat conduction technology realizes thermal transfer and cyclic utilization, diversely receive solar energy more as much as possible, adopt the new material to turn into solar energy heat energy as much as possible, adopt printing opacity insulation material to receive sunshine as much as possible and prevent that the heat scatters and disappears, adopt capillary imbibition material to realize sea water interfacial heating and improve the distillation effect, utilize heat conduction technology to realize bottom heating upper portion condensation, be favorable to the vapor condensation, utilize heat conduction technology to reduce condensation position temperature, improve the condensation effect, utilize heat conduction technology to preheat the sea water, realize thermal recycle, the efficiency of the high system is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic vertical sectional view of the overall structure of the present invention;
fig. 2 is a schematic vertical sectional view of the basic structure unit of the present invention.
In the figure, 1, a light-transmitting heat-insulating layer; 2. a solar energy absorbing layer; 3. a heat conductive distillation layer; 4. a thermal insulation body; 5. a capillary liquid absorption layer; 6. collecting water; 7. a heat-conducting condensation layer; 8. seawater; 9. a heat preservation box body.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
As shown in fig. 1-2, the efficient solar seawater desalination device based on heat conduction technology heat recycling comprises a light-transmitting heat-insulating layer 1, a solar energy absorbing layer 2, a heat-insulating body 4, a heat-conducting distillation layer 3, a heat-conducting condensation layer 7, a capillary liquid absorption layer 5, a water-collecting body 6 and a heat-insulating box body 9, and is characterized in that the heat-insulating body 4 is arranged inside the heat-insulating box body 9, the light-transmitting heat-insulating layer 1 is arranged at the top of the heat-insulating body 4, the solar energy absorbing layer 2 is arranged below the light-transmitting heat-insulating layer 1, the heat-conducting distillation layer 3 is arranged below the solar energy absorbing layer 2 and extends to one side of the heat-insulating body 4 to cover the heat-insulating body, the heat-conducting condensation layer 7 is arranged at the bottom of the heat-insulating body 4 and the other side of the heat-insulating body, the capillary liquid absorption layer 5 is arranged outside the, a water collecting body 6 is arranged on one side of the lower part of the heat-conducting condensation layer 7, the heat-conducting distillation layer 3 is not connected with the heat-conducting condensation layer 7 at the bottom, and seawater 8 is filled in the lower part in the heat-insulating box body 9.
Further, heat conduction distillation horizon 3 and heat conduction condensation layer 7 are graphite alkene heat conduction membrane or make for the flexible heat conduction membrane of graphite heat conduction membrane, replace metal heat conduction materials such as copper that used often in the past, and metal heat conduction materials is neither economical difficult moulding again, and graphite alkene texture is frivolous, intensity is high, heat conduction is electrically conductive good, and graphite alkene heat conduction membrane stability is good simultaneously, corrosion-resistant, soft workable, for the heat conduction material of ideal, is applied to solar energy sea water desalination with it, is expected to realize the utility model discloses the target of settlement.
Furthermore, the light-transmitting heat-insulating layer 1 is made of silicon dioxide aerogel materials, so that light transmission and heat insulation are facilitated.
Furthermore, each group of light-transmitting heat-insulating layers 1, solar energy absorbing layers 2, heat-insulating bodies 4, heat-conducting distillation layers 3, heat-conducting condensation layers 7, capillary liquid absorption layers 5 and water collecting bodies 6 form a basic structure unit, a plurality of groups of basic structure units are arranged in parallel, when the basic structure unit is installed, the heat-conducting condensation layers 7 are installed on the inclined planes of the side close to the heat-conducting distillation layers 3 of the previous basic structure unit, and the parallel number is determined according to needs.
Furthermore, the heat insulation body 4 and the heat preservation box 9 are both made of water-impermeable heat preservation foam, and have the advantages of good heat preservation performance, hydrophobicity, light texture and seawater corrosion resistance.
Furthermore, the solar energy absorption layer 2 is formed by directly coating black paint which can efficiently absorb solar heat on the heat conduction distillation layer 3, so that the absorbed solar heat can be conveniently conducted to the heat conduction distillation layer 3.
Further, the capillary liquid absorption layer 5 is made of cotton threads, so that seawater can be guided conveniently.
Furthermore, the water collecting body 6 is made of light pipes or cotton ropes, so that the collected fresh water is finally gathered together by utilizing the characteristics of water absorption and water diversion of the water collecting body 6.
Specifically, when the utility model is used, the light-transmitting heat-insulating layer 1, the solar energy absorbing layer 2, the heat-insulating box body 4, the heat-conducting distillation layer 3, the heat-conducting condensation layer 7, the capillary liquid absorption layer 5 and the water collection body 6 form a basic structure unit, the basic structure unit is provided with a plurality of groups in parallel, a plurality of basic structure units are connected in parallel to form a group and then are installed in the heat-insulating box body 9, the four sides of the device can be configured asymmetrically, the principle that solar energy is received to the maximum extent and converted into heat energy and the heat is lost as little as possible is taken as, a proper amount of seawater is added into the heat-insulating box body 9, the seawater surface is ensured to be lower than the heat-insulating body 4, one side of the heat-insulating box body 9 with the light-transmitting heat-insulating layer 1 is irradiated to the sun in the direction, the sunlight irradiates the solar energy absorbing layer 2 through the light-transmitting heat-insulating layer 1 to generate heat, steam rises, meet the condensation and become fresh water on another adjacent basic structure unit heat conduction condensation layer 7, fresh water slides down to water-collecting body 6 along the membrane, when water-collecting body 6 is light tubular product, fresh water slides down to tubular product internal flow direction collection department along the membrane, when water-collecting body 6 is cotton rope, utilize its characteristic of absorbing water and leading water, the fresh water drainage of collecting to the collection department, wherein, heat conduction condensation layer 7 lower extreme and the sea water 8 contact in the capillary imbibition layer 5 and cooling, do benefit to steam and condense on it, simultaneously, heat conduction condensation layer 7 carries the preheating effect to lower extreme capillary imbibition layer 5 to sea water 8 wherein with the heat conduction of steam condensation release, preheated sea water 8 is carried by capillary imbibition layer 5 and is conducted the evaporation of distillation layer 3 upper end, realize the cyclic utilization of condensation heat.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Based on heat conduction technology heat cyclic utilization high-efficiency solar seawater desalination device, which comprises a light-transmitting heat-insulating layer (1), a solar absorbing layer (2), a heat-insulating body (4), a heat-transmitting distillation layer (3), a heat-transmitting condensation layer (7), a capillary liquid absorption layer (5), a water collecting body (6) and a heat-insulating box body (9), and is characterized in that the heat-insulating body (4) is arranged in the heat-insulating box body (9), the light-transmitting heat-insulating layer (1) is arranged at the top of the heat-insulating body (4), the solar absorbing layer (2) is arranged below the light-transmitting heat-insulating layer (1), the heat-transmitting distillation layer (3) is arranged below the solar absorbing layer (2) and extends to one side of the heat-insulating body (4) to cover the heat-insulating body, the heat-transmitting condensation layer (7) is arranged at the bottom of the heat-insulating body (4) and the, capillary imbibition layer (5) are along in heat preservation insulator (4) outside extension and the flagging sea water (8) below heat preservation insulator (4) that cover heat conduction condensation layer (7), water collecting body (6) are installed to heat conduction condensation layer (7) lower part one side, heat conduction distillation bed (3) are not connected in the bottom with heat conduction condensation layer (7), lower part contains sea water (8) in insulation box (9).
2. The efficient solar seawater desalination plant based on heat conduction technology heat recycling of claim 1, wherein the heat conduction distillation layer (3) and the heat conduction condensation layer (7) are both made of flexible heat conduction membranes.
3. The heat-conduction-technology-based high-efficiency solar seawater desalination device for thermal recycling is characterized in that the light-transmitting heat-insulating layer (1) is made of a high-efficiency light-transmitting heat-insulating material.
4. The efficient solar seawater desalination device based on heat conduction technology heat recycling as claimed in claim 1, wherein each group of the light-transmitting heat-insulating layer (1), the solar absorption layer (2), the heat-insulating insulator (4), the heat-conducting distillation layer (3), the heat-conducting condensation layer (7), the capillary liquid absorption layer (5) and the water collection body (6) form a basic structural unit, the basic structural unit is provided with a plurality of groups in parallel, and when the basic structural unit is installed, the heat-conducting condensation layer (7) is installed close to the inclined surface on the side of the heat-conducting distillation layer (3) of the previous basic structural unit.
5. The heat-conduction-technology-based high-efficiency solar seawater desalination device for thermal recycling is characterized in that the solar absorption layer (2) is made of a material which can efficiently absorb sunlight and convert the sunlight into heat energy.
6. The efficient solar seawater desalination plant based on heat conduction technology heat recycling of claim 1, wherein the heat preservation and insulation body (4) and the heat preservation box body (9) are both made of water-impermeable heat preservation and insulation materials.
7. The high-efficiency solar seawater desalination plant based on heat conduction technology heat recycling of claim 1, wherein the capillary liquid absorption layer (5) is made of a fiber material with high-efficiency water absorption.
8. The efficient solar seawater desalination device based on heat conduction technology heat recycling of claim 1, wherein the water collection body (6) is made of light pipes or water absorption fiber lines.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021365052.6U CN212864202U (en) | 2020-07-13 | 2020-07-13 | Efficient solar seawater desalination device based on heat conduction technology heat recycling |
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| CN202021365052.6U CN212864202U (en) | 2020-07-13 | 2020-07-13 | Efficient solar seawater desalination device based on heat conduction technology heat recycling |
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| CN212864202U true CN212864202U (en) | 2021-04-02 |
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