CN112978830A - Double-passive solar water treatment system - Google Patents
Double-passive solar water treatment system Download PDFInfo
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- CN112978830A CN112978830A CN202110407222.5A CN202110407222A CN112978830A CN 112978830 A CN112978830 A CN 112978830A CN 202110407222 A CN202110407222 A CN 202110407222A CN 112978830 A CN112978830 A CN 112978830A
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- 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
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- 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
- C02F1/10—Treatment of water, waste water, or sewage by heating by distillation or evaporation by direct contact with a particulate solid or with a fluid, as a heat transfer medium
- C02F1/12—Spray evaporation
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- 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
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- 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
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- 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
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
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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
Abstract
The utility model provides a two passive solar energy water treatment system, includes solar energy collection canopy, chimney, solar pond, solar energy selectivity absorber plate and atomizer, set up the chimney on the solar energy collection canopy to chimney bottom and solar energy collection canopy intercommunication, solar energy collection canopy below sets gradually solar energy selectivity absorber plate, solar pond and atomizer from outside to inside. The system adopts a double passive coupling technology of a solar chimney and a solar pond, realizes zero emission treatment of the concentrated brine by utilizing an air heat and humidity process, realizes the whole operation efficiency of the passive system and the continuity of the solar system through a relevant enhanced heat exchange and coupling technology, and solves the problems of high energy consumption and high cost of the zero emission of the concentrated brine.
Description
Technical Field
The invention relates to a double-passive solar water treatment system, and belongs to the technical field of solar energy utilization.
Background
The zero discharge is to concentrate the industrial wastewater into a solid or concentrated liquid form for treatment, rather than discharge the industrial wastewater into a natural water body in the form of wastewater. The zero emission needs to be realized, and the residual 30-40% of concentrated brine after membrane desalination needs to be further concentrated. At present, industry high salt sewage zero release part has adopted the passive evaporation in large-area pond to handle, because evaporation efficiency is very low, and area is great to be influenced by meteorological conditions such as rain easily, most try zero release enterprises to choose to adopt the evaporation crystallization technology to handle. The atomization crystallization treatment technology of high-concentration brine based on the atomization crystallization technology can realize theoretical zero emission, but the system energy consumption is high, the power consumption per ton of brine reaches 40-50 kilowatts, 320 kg of steam is consumed, the energy consumption is huge, the cost is too high, and the application in the industry is rare. Energy consumption and efficiency are key points influencing the industrial application of the zero emission technology.
Patent CN201010509740 proposes an in-pool system based on air heat collector, which is an important way of applying solar energy to water treatment, but in a large-scale water treatment system, there is a problem of smooth organization of a large-capacity air heat collector system, and because of large air volume and large resistance, the energy consumption of a system running fan is too high.
The solar pond is a better passive solar heat absorption and storage system, and patent CN201310243817 adopts the solar pond as heat absorption equipment to provide a heat source for a low-temperature distillation system, and the water treatment system inherits the technical route of traditional distilled water treatment, and can not realize zero emission treatment, and the system needs to run under a vacuum condition, and the system is maintained more complicatedly, and the traditional solar pond has low heat absorption efficiency and poor overall performance. The solar chimney is a typical passive solar aerodynamic system, and the patent CN101671056A adopts the solar chimney as an aerodynamic and heating system to desalt seawater, but in the patent, a spraying system is positioned right above a solar pond, unevaporated high-altitude spray water directly falls into the solar pond, water in the direct hard-air solar pond is disturbed, the stable layering and heat storage performance of the solar pond are damaged, the heat loss is increased, the heat energy grade of the solar pond is reduced, and the heat storage characteristic of the solar pond is damaged, and the solar pond system is a traditional solar pond and has lower efficiency. According to the invention, a double passive water treatment system based on a solar chimney and a solar pond is established, and a high-efficiency strong brine zero-discharge system is established through heat absorption enhancement, reasonable function division and optimization organization of a thermal field pneumatic field.
Disclosure of Invention
The invention aims to solve the problems of zero discharge of concentrated sewage, high energy consumption in the process of refining salt lake resources and the like, establish a water treatment system taking solar energy as a heat source, overcome the complexity of system operation and maintenance combined with the original distillation technology in the main solar water treatment technology researched in the prior art, and improve the thermal performance and the pneumatic performance of the passive technology. The system is a double-passive solar water treatment system technology based on technologies such as a solar pond, a solar chimney, atomization humidification and the like, and particularly relates to a heat collection and storage type double-passive solar strong brine zero-discharge treatment system based on coupling of the solar chimney and the solar pond.
The invention introduces a solar chimney as heat collecting and pneumatic equipment for treating strong brine, adds heat absorption strengthening and starting strengthening components in a heat collecting shed and the chimney of the solar chimney to strengthen the starting characteristic of the solar chimney, introduces a solar pond as a strong brine heat absorption and storage system, performs heat absorption strengthening, heat loss inhibition and layered maintenance strengthening measures to ensure the heat absorption and storage efficiency of the solar pond and improve the running hours, and establishes heat and mass exchange between strong brine in the heat absorption pond and pneumatic air by an atomization technology on the technologies of the solar chimney and the solar pond to realize high-efficiency evaporation and concentration of the strong brine.
The invention is realized by the following technical scheme:
a double-passive solar water treatment system comprises a solar heat collection shed, a chimney, a solar pond, a solar selective absorber plate and an atomizer; the solar heat collection shed is characterized in that a chimney is arranged on the solar heat collection shed, the bottom of the chimney is communicated with the solar heat collection shed, and a solar selective heat absorption plate, a solar pond and an atomizer are sequentially arranged below the solar heat collection shed from outside to inside.
Furthermore, the space of the solar heat collection shed is divided into an air heating area, a solar pond heating area and an atomization evaporation area from outside to inside in sequence according to functions; the air heating zone is a main zone for heating ambient air, and the solar pond heating zone is a strong brine heating and heat storage zone; the atomization evaporation area is a strong brine evaporation crystallization and air humidification area; the environmental air passes through an air heating zone, a solar pond heating zone and an atomization evaporation zone in sequence under the driving of the chimney and the solar heat collection shed by hot pressing, takes away the moisture in the concentrated seawater through the heating and humidifying process of the air, and is discharged to the atmosphere through the chimney; a solar selective heat absorbing plate is arranged in the air heating area to improve the photo-thermal conversion efficiency.
Furthermore, the air circulation of the system is powered by a chimney and a solar heat collection shed, and is introduced into a solar pond system, so that the passive heating and heat storage of strong brine are realized, and the brine heat collection and air flow processes in the system are passive systems.
Furthermore, a solar pond auxiliary pneumatic heat exchanger is additionally arranged in the chimney, hot strong brine in the solar pond is used as a heat source to heat ascending air flow in the chimney, and the dynamic characteristic of the chimney is improved.
Furthermore, a honeycomb heat absorber is arranged in the solar cell to convert solar energy into heat energy and heat salt water in the solar cell, and the honeycomb heat absorber can inhibit convective heat transfer in the solar cell and improve heat storage performance.
Furthermore, a transparent cover plate is arranged on the solar pond to inhibit heat loss on the surface of the solar pond, and the heat absorption and accumulation system of the solar pond with heat absorption enhancement, heat loss inhibition and convection inhibition can realize 24-hour continuous operation of the double passive water treatment system.
Further, the solar selective heat absorbing plate is positioned in the air heating zone; the solar pond is positioned in a heating zone of the solar pond; the atomizer is located in the atomizing evaporation area.
Furthermore, a concentrated salt water pump is arranged between the solar pond and the atomizer, and the concentrated salt water pump sucks hot seawater at the bottom in the solar pond and atomizes the hot seawater into concentrated seawater fog drops with small particle size through an atomizing nozzle of the atomizer.
The invention mainly comprises a solar chimney pneumatic system, a solar pond heat absorption and storage system and an atomization humidification and pneumatic reinforcement heat and mass exchange system. The working process of the system is as follows:
the pneumatic process comprises the following steps: the invention adopts a solar chimney as a passive pneumatic system of a double-passive solar water treatment system, under the double thermodynamic actions of a solar heat collection shed and the chimney, ambient air around the solar heat collection shed is sucked into an air heating zone of the solar heat collection shed, the ambient air passes through the surface of a solar selective heat absorbing plate of the air heating zone to be heated, and under the greenhouse effect of the solar heat collection shed and the suction force of the chimney, the ambient air passes through the air heating zone and a solar pond heating zone, an atomization evaporation zone is heated and humidified step by step, and is finally discharged to the high altitude through the chimney, so that the autonomous pneumatic process of the air is completed.
The solar pond heat absorption and storage system comprises: in the solar pond area in the solar heat collection shed, the solar pond is strong brine with certain salt concentration gradient, the convection of water in the pond is inhibited, the stable temperature gradient is established in the depth direction, the heat loss of the solar pond is reduced, the solar pond is applied as a heat storage system, in order to improve the heat absorption performance of the solar pond, a honeycomb heat absorber is arranged in the solar pond, the black body effect of the honeycomb heat absorber increases the photothermal conversion efficiency of solar energy in the pond, the solar energy is converted into heat energy and heats salt water in the solar pond, the honeycomb heat absorber can also further inhibit the convection heat exchange in the solar pond, the establishment of an inclined temperature layer in the solar pond is stabilized, the heat storage performance is improved, a transparent cover plate is arranged on the solar pond to inhibit the surface heat loss of the solar pond, the heat absorption and storage system of the solar pond with heat absorption strengthening, heat loss inhibition and convection inhibition, the evaporation capacity of concentrated brine at night and the serious pneumatic capacity of the system can be enhanced through the heat exchange system, and the 24-hour continuous and efficient operation of the chimney system is kept.
And (3) atomizing and humidifying: in order to strengthen the evaporation process of the strong brine, an atomization evaporation area is arranged in the solar heat collection shed, the strong brine pumps suck the hot seawater at the bottom in the solar pond, the hot seawater is atomized into small-particle-size strong seawater fog drops through an atomization nozzle of an atomizer, the fog drops are contacted with hot air heated by an air heating area to carry out heat-mass exchange, the overflowing air is humidified, the strong seawater is further concentrated, and part of the non-evaporated strong seawater is further concentrated through surface evaporation under the action of air pneumatic force instead of concentration after falling to the ground of the atomization evaporation area and slowly flows back to the solar pond. The hot and humid air after being atomized and humidified is discharged from the top of the chimney under the action of the pneumatic force of the chimney.
The invention has the advantages that:
1. the invention has the advantages that the characteristics of a passive pneumatic system of a solar chimney and a passive heat absorption and heat storage system of a solar pond are combined, a double passive energy system is established for the rapid atomization and concentration of the strong brine, and the pneumatic energy consumption and the brine heating energy consumption in the conventional strong brine concentration and atomization process are saved.
2. The invention has the advantages that the heat and mass transfer strengthening and the pneumatic strengthening are carried out on all links of the system, the heat absorption strengthening system is added in the solar air heat collector and the solar pond, the photo-thermal conversion efficiency of the system is improved, the concentrated brine concentration process is improved through atomization heat transfer strengthening, the pneumatic strengthening system is added in the chimney, and the pneumatic capacity of the system is improved.
Description of the drawings:
FIG. 1 is a schematic diagram of a dual passive solar water treatment system of the present invention;
in the figure: the solar energy concentrated salt water solar energy heat pump comprises a solar heat collection shed 1, an air heating zone 2, a solar selective absorber plate 3, a solar pond heating zone 4, a solar pond 5, an atomization evaporation zone 6, a chimney 7, a solar pond auxiliary pneumatic heat exchanger 8, an atomizer 9, a transparent cover plate 10, a honeycomb heat absorber 11 and a concentrated salt water pump 12.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the detailed description.
The invention discloses a double-passive solar water treatment system, which is a heat collection and heat storage type double-passive solar strong brine zero-discharge treatment system based on coupling of a solar chimney and a solar pond, mainly relates to a solar chimney pneumatic system, a solar pond heat absorption and storage system and an atomization humidification and pneumatic reinforcement heat and mass exchange system, and has the following specific implementation mode.
As shown in fig. 1, a double passive solar water treatment system mainly comprises a solar heat collecting shed 1, an air heating zone 2, a solar selective absorber plate 3, a solar pond heating zone 4, a solar pond 5, an atomization and evaporation zone 6, a chimney 7, a solar pond auxiliary pneumatic heat exchanger 8, an atomizer 9, a transparent cover plate 10, a honeycomb heat absorber 11, a concentrated brine pump 12, valve pipelines and other auxiliary elements. The solar heat collection shed is characterized in that a chimney 7 is arranged on the solar heat collection shed 1, the bottom of the chimney 7 is communicated with the solar heat collection shed 1, and a solar selective heat absorption plate 3, a solar pond 5 and an atomizer 9 are sequentially arranged below the solar heat collection shed 1 from outside to inside. A concentrated brine pump 12 is arranged between the solar pond 5 and the atomizer 9, and the concentrated brine pump 12 sucks hot seawater at the bottom in the solar pond and atomizes the hot seawater into concentrated seawater fog drops with small particle size through an atomizing nozzle of the atomizer 9. An auxiliary pneumatic heat exchanger 8 of a solar pond is additionally arranged in the chimney 7, hot strong brine in the solar pond 5 is used as a heat source, ascending air flow in the chimney is heated, and the dynamic characteristic of the chimney is improved.
The space in the solar heat collection shed 1 is divided into an air heating area 2, a solar pond heating area 4 and an atomization and evaporation area 6 from outside to inside according to functions. The solar selective heat absorbing plate is positioned in the air heating zone 2; the air heating zone 2 is the main zone for ambient air heating. The solar pond 5 is positioned in the solar pond heating area 4; the solar pond heating area 4 is a strong brine heating and heat storage area. The atomizer 9 is positioned in the atomizing evaporation area; the atomization evaporation area 6 is a strong brine evaporation crystallization and air humidification area.
The air circulation of the system is powered by a chimney 7 and the solar heat collecting shed 1 and is introduced into the solar pond 5 system, so that the passive heating and heat storage of the strong brine are realized, and the processes of brine heat collection and air flow in the system are passive systems.
Solar energy can pass through solar energy collection canopy 1, heats the air in solar energy collection canopy 1, and hot-air passes through air heating zone 2, solar pond heating zone 4 and atomizing evaporation zone 6 in proper order under the hot pressing suction effort of chimney 7, and the air gets into chimney 7 after being heated the humidification to upward movement discharges to the high-altitude atmosphere at chimney 7 export. By the influence of the hot-pressing drive of the chimney 7 and the solar heat collection shed 1, the ambient air around the solar heat collection shed 1 is absorbed by the heat in the solar heat collection shed 1 to form an open type passive solar air heating pneumatic system.
The solar selective heat absorbing plate 3 is installed in the air heating zone 2 to improve the light-heat conversion efficiency, the selective heat absorbing plate 3 converts solar energy into heat energy, the temperature of the solar selective heat absorbing plate 3 is increased, air entering the solar heat collecting shed 1 is heated, the pneumatic lifting capacity of the heat collecting shed is improved, the atomized evaporation zone 6 is heated step by step and humidified and then finally discharged to the high altitude through the chimney 7 under the action of the greenhouse effect of the solar heat collecting shed and the suction force of the chimney, and the autonomous pneumatic process of the air is completed.
In the invention, a solar pond heating area 4 is arranged in a solar heat collecting shed 1, the solar pond is strong brine with certain salt concentration gradient, convection of water in the pond is inhibited, a stable temperature gradient is established in the depth direction, and heat loss of the solar pond is reduced, the solar heat collecting shed is applied as a heat collecting and storing system in the invention, in order to improve the heat absorption performance of the solar pond heating area 4, a honeycomb heat absorber 11 is arranged in the solar pond heating area 4, the black body effect of the honeycomb heat absorber 11 increases the photothermal conversion efficiency of solar energy in the pond, converts the solar energy into heat energy, heats salt water in the solar pond, the honeycomb heat absorber 11 can also further inhibit convection heat exchange in the solar pond heating area 4, stabilizes the establishment of an inclined temperature layer in the pond, improves the heat storage performance, a transparent cover plate 10 is arranged on the solar pond to inhibit the surface heat loss of the solar pond heating area 4, and has the heat absorbing and storing system of the solar pond heating area, the heat storage characteristic of the solar pond can enhance the evaporation capacity of strong brine at night and the serious pneumatic capacity of the system through a heat exchange system, and the 24-hour continuous and efficient operation of a chimney system is kept.
In order to strengthen the evaporation process of the concentrated brine, an atomization evaporation area consisting of an atomizer 9 is arranged in a solar heat collection shed 1, the concentrated brine pumps suck hot seawater at the bottom in a solar pond heating area 4, the hot seawater is atomized into small-particle-size concentrated seawater fog drops through an atomization nozzle of the atomizer 9, the fog drops are contacted with hot air heated by an air heating area 2 for heat-mass exchange, the overflowing air is humidified, the concentrated seawater is further concentrated, the unevaporated concentrated seawater drops to the ground of the atomization evaporation area, and part of the unevaporated concentrated seawater is further concentrated through surface evaporation under the action of air pneumatic force and slowly flows back to the solar pond heating area 4. The hot and humid air humidified by atomization is discharged from the top of the chimney 7 under the action of the pneumatic power of the chimney.
The invention mainly comprises a solar chimney pneumatic system, a solar pond heat absorption and storage system and an atomization humidification and pneumatic reinforcement heat and mass exchange system. The working process of the system is as follows:
the method adopts a solar chimney 7 as a passive pneumatic system of a double-passive solar water treatment system, under the double thermodynamic actions of a solar heat collection shed 1 and the chimney 7, ambient air around the solar heat collection shed 1 is sucked into an air heating area 2 of the solar heat collection shed 1, the ambient air passes through the surface of a solar selective heat absorption plate 3 of the air heating area 2 to be heated, and under the action of the greenhouse effect of the solar heat collection shed 1 and the suction force of the chimney 7, the ambient air passes through the air heating area 2, a solar pond heating area 4, an atomization evaporation area 6 is heated and humidified step by step, and is finally discharged to the high altitude through the chimney 7, so that the autonomous pneumatic process of the air is completed.
The solar pond heat absorption and storage system comprises: in the solar pond area in the solar heat collection shed, the solar pond 5 is strong brine with certain salt concentration gradient, the convection of water in the pond is inhibited, the stable temperature gradient is established in the depth direction, the heat loss of the solar pond 5 is reduced, the solar pond is applied as a heat storage system, in order to improve the heat absorption performance of the solar pond 5, a honeycomb heat absorber 11 is arranged in the solar pond 5, the black body effect of the honeycomb heat absorber 11 increases the photothermal conversion efficiency of solar energy in the pond, the solar energy is converted into heat energy, the brine in the solar pond is heated, the honeycomb heat absorber 11 can also further inhibit the convection heat exchange in the solar pond 5, the establishment of an inclined temperature layer in the pond is stabilized, the heat storage performance is improved, a transparent cover plate 10 is arranged on the solar pond to inhibit the surface heat loss of the solar pond 5, and the heat absorption and storage system of the solar pond 5 with heat absorption enhancement, heat loss inhibition, the heat storage characteristic of the solar pond 5 can enhance the evaporation capacity of strong brine at night and the serious pneumatic capacity of the system through a heat exchange system, and the 24-hour continuous high-efficiency operation of a chimney 7 system is kept.
And (3) atomizing and humidifying: in order to strengthen the evaporation process of the concentrated brine, an atomization evaporation area 6 is arranged in a solar heat collection shed, a concentrated brine pump 12 sucks hot seawater at the bottom in a solar pond 5, the hot seawater is atomized into small-particle-size concentrated seawater fog drops through an atomization nozzle of an atomizer 9, the fog drops are contacted with hot air heated by an air heating area 2 to carry out heat-mass exchange, the overflowing air is humidified, the concentrated seawater is further concentrated, the non-evaporated concentrated seawater is partially further concentrated through surface evaporation under the action of air pneumatic power after falling to the ground of the atomization evaporation area 6, and meanwhile, the concentrated seawater slowly flows back to the solar pond 5. The hot and humid air humidified by atomization is discharged from the top of the chimney 7 under the action of the pneumatic power of the chimney 7.
The system adopts the solar chimney effect and the solar pond double passive coupling technology, realizes the zero emission treatment of the strong brine by utilizing the air heat and humidity process, realizes the whole operation efficiency of the passive system and the continuity of the solar system by the related enhanced heat exchange and coupling technology, and solves the problems of high energy consumption and high cost of the strong brine zero emission.
It should be noted that, according to the above embodiments of the present invention, those skilled in the art can fully implement the full scope of the present invention as defined by the independent claims and the dependent claims, and implement the processes and methods as the above embodiments; and the invention has not been described in detail so as not to obscure the present invention.
The above description is only a part of the embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (8)
1. A dual passive solar water treatment system, characterized in that: the system comprises a solar heat collection shed (1), a chimney (7), a solar pool (5), a solar selective heat absorption plate (3) and an atomizer (9), wherein the chimney (7) is arranged on the solar heat collection shed (1), the bottom of the chimney (7) is communicated with the solar heat collection shed (1), and the solar selective heat absorption plate (3), the solar pool (5) and the atomizer (9) are sequentially arranged from outside to inside below the solar heat collection shed (1).
2. A dual passive solar water treatment system as defined in claim 1 wherein: the space of the solar heat collection shed (1) is divided into an air heating zone (2), a solar pond heating zone (4) and an atomization evaporation zone (6) from outside to inside in sequence according to functions; the air heating zone (2) is a main zone for heating ambient air, and the solar pond heating zone (4) is a strong brine heating and heat storage zone; the atomization evaporation area (6) is a strong brine evaporation crystallization and air humidification area; the environmental air passes through the air heating zone (2), the solar pond heating zone (4) and the atomization evaporation zone (6) in sequence under the hot-pressing driving of the chimney (7) and the solar heat collection shed (1), takes away the moisture in the concentrated seawater through the heating and humidifying process of the air, and is discharged to the atmosphere through the chimney (7); a solar selective heat absorbing plate (3) is arranged in the air heating zone (2) to improve the photo-thermal conversion efficiency.
3. A dual passive solar water treatment system as defined in claim 1 or 2 wherein: the air circulation of the system is powered by a chimney (7) and a solar heat collection shed (1), and is introduced into a solar pond (5) system, so that the passive heating and heat storage of strong brine are realized, and the processes of brine heat collection and air flow in the system are passive systems.
4. A dual passive solar water treatment system as claimed in claim 1 or 2, wherein a solar pond auxiliary pneumatic heat exchanger (8) is added in the chimney (7), and hot concentrated brine in the solar pond (5) is used as a heat source to heat the updraft in the chimney, thereby improving the dynamic characteristics of the chimney.
5. A dual passive solar water treatment system as defined in claim 1 or 2 wherein: the honeycomb heat absorber (11) is placed in the solar pond, solar energy is converted into heat energy, salt water in the solar pond (5) is heated, the honeycomb heat absorber (11) can inhibit heat convection in the solar pond, and heat storage performance is improved.
6. A dual passive solar water treatment system as defined in claim 5 wherein: the transparent cover plate (10) is arranged on the solar pond (5) to inhibit the surface heat loss of the solar pond (5), and the heat absorption and accumulation system of the solar pond (5) with heat absorption enhancement, heat loss inhibition and convection inhibition can realize the 24-hour continuous operation of the double-passive water treatment system.
7. A dual passive solar water treatment system as defined in claim 2 wherein: the solar selective heat absorbing plate (3) is positioned in the air heating zone (2); the solar pond (5) is positioned in the solar pond heating area (4); the atomizer (9) is located in the atomizing evaporation zone.
8. A dual passive solar water treatment system according to claim 1, wherein a concentrated brine pump (12) is provided between the solar pond (5) and the atomizer (9), the concentrated brine pump (12) pumps hot seawater at the bottom of the solar pond and atomizes the seawater into small-size concentrated seawater droplets through the atomizing nozzle of the atomizer (9).
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| WO2016019647A1 (en) * | 2014-08-07 | 2016-02-11 | 西安交通大学 | Solar energy photovoltaic and solar energy thermal current chimney power generation integrated device |
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| US20190186473A1 (en) * | 2017-12-15 | 2019-06-20 | King Fahd University Of Petroleum And Minerals | Augmentation of solar chimney for power production using fresnel lens |
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