WO2022158619A1

WO2022158619A1 - Evaporative saline water desalination apparatus using solar energy

Info

Publication number: WO2022158619A1
Application number: PCT/KR2021/000956
Authority: WO
Inventors: 박헌균
Original assignee: 주식회사 솔라리노
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2022-07-28
Also published as: KR20230137943A

Abstract

A saline water desalination apparatus according to an embodiment of the present invention comprises a plurality of evaporation units that are arranged spaced apart from and facing each other. The plurality of evaporation units include: a front evaporation unit which is located at the outermost portion irradiated with solar heat and includes a front wicking layer in which saline water evaporates while flowing; a first evaporation unit including a first waterproof layer which faces the front wicking layer and in which water vapor that has evaporated in the front wicking layer condenses into freshwater; a first spacer located between the front wicking layer and the first waterproof layer; and a heat insulating layer located between the front wicking layer and the first spacer.

Description

Evaporative brine desalination device using solar energy

The present invention relates to an evaporative brine desalination apparatus using solar energy, and more particularly, to a brine desalination apparatus capable of simplifying the structure of the apparatus while having high efficiency and reducing the manufacturing cost of the apparatus.

Recently, as securing stable water resources has emerged as a global issue due to the global water shortage, interest in the development of alternative water resources is increasing. We are investing heavily in research and development for alternative water resource technologies. Among them, the salt water desalination technology is to produce fresh water from salt water, and more specifically, it is a method to obtain high-purity drinking water, household water, industrial water, etc. It refers to a series of water treatment processes.

Saltwater desalination technology can be seen as one of the biggest challenges facing mankind in order to secure not only drinking water/fresh water in developing countries, island regions, and remote areas, but also global water resources.

Conventionally, a large-capacity desalination facility such as an evaporation method and a membrane filtration method has been used as a salt water desalination technology.

A typical method for desalination of salt water is evaporation, which refers to a method of heating seawater containing salt and condensing the steam to extract fresh water.

In general, salt water desalination equipment has to supply energy artificially, and has a complicated structure and high technical level, so it is difficult to manufacture and install and there is a problem with high cost for operation. There is a problem such as the salt is not completely removed.

In addition, in the case of the conventional brine desalination apparatus using evaporation method, membrane filtration method, etc., since the technology of desalination of a large amount of brine is applied, there is a problem that the initial construction cost and maintenance cost are excessive, and there is a problem with a small capacity such as an island area. There was a problem in that it was difficult to apply the desalination device.

In addition, since the existing desalination method uses fossil energy as an energy source, high cost due to high oil price and environmental pollution problems occur, so the use of alternative eco-friendly energy is required. The configuration of the necessary brine desalination device has not been studied much.

One aspect of the present invention is to provide a salt water desalination device that can reduce manufacturing costs and prevent parts from being damaged by solar heat.

A salt water desalination device including a plurality of evaporation units spaced apart from each other and arranged to face each other according to an embodiment of the present invention, wherein the plurality of evaporation units are disposed at the outermost part to which solar heat is irradiated, the front to which the salt water is evaporated while flowing a forward evaporation unit comprising a wick layer; a first evaporation unit facing the front wicking layer and including a first waterproofing layer in which water vapor evaporated from the front wicking layer is condensed into fresh water; a first spacer disposed between the front wicking layer and the first waterproofing layer; and a heat insulating layer disposed between the front wicking layer and the first spacer.

The front evaporation unit may further include a heat absorbing layer that receives sunlight and absorbs solar heat, and a heat conduction layer disposed between the heat absorbing layer and the front wick layer.

The first spacer may have a net shape.

The first evaporation unit may include a first collection pocket for collecting fresh water flowing from the first waterproof layer.

The first evaporation unit may further include a first wick layer disposed behind the first waterproof layer.

a second evaporation unit facing the first wicking layer and including a second waterproofing layer in which water vapor evaporated from the first wicking layer is condensed into fresh water; and a second spacer disposed between the first evaporation unit and the second evaporation unit.

A brine supply unit that supplies brine to the front wick layer and the first wick layer and includes a brine tank in which brine is stored, wherein the brine supply unit includes a front supply wick connecting the brine tank and the front wick and It may include a first supply wick connecting the brine tank and the first wick layer.

A cross-sectional area of the front supply wick may be larger than that of the first supply wick so that a larger amount of salt water is supplied through the front supply wick than the first supply wick.

The brine supply unit may further include a separation layer disposed between the front supply wick and the first supply wick, and the front supply wick, the first supply wick, and the separation layer may be stacked on each other.

Further comprising a housing accommodating the plurality of evaporation units, the housing may be provided with a fresh water outlet through which the fresh water condensed in the first evaporation unit is taken out and a salt water outlet through which the salt water flowing down from the front evaporation unit is taken out have.

The outer surface of the housing may be provided with a drip tray arranged to be inclined so that water flowing along the outer surface of the housing is collected and flows.

According to an embodiment of the present invention, it is possible to reduce the manufacturing cost by reducing the number of parts, and by providing the heat insulating layer and the heat conductive layer in the portion directly receiving solar heat, it is possible to prevent the parts from being damaged by the solar heat.

1 is a view for explaining a salt water desalination apparatus of a multi-stage structure according to the prior art.

2 is a view showing a brine desalination apparatus according to an embodiment of the present invention.

FIG. 3 is an enlarged view of part III of FIG. 2 .

4 is a view illustrating a brine supply unit in the brine desalination apparatus according to an embodiment of the present invention.

5 and 6 are views showing a spacer in the brine desalination apparatus according to an embodiment of the present invention.

7 is a view illustrating a housing of a salt water desalination apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, various embodiments of the present invention will be described in detail so that those of ordinary skill in the art can easily carry out the present invention. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar elements throughout the specification.

Throughout the specification, when a part is "connected (connected, contacted, coupled)" with another part, it is not only "directly connected" but also "indirectly connected" with another member interposed therebetween. "Including cases where In addition, when it is said that a part "includes" or "has" a certain component, it means that other components may be further provided without excluding other components unless otherwise stated.

As shown in FIG. 1 , the salt water desalination apparatus 100 having a multi-stage structure according to the prior art includes at least one evaporation plate in the device, and the evaporation plate is a plate and a wick formed on the rear surface of the plate. As a result, the salt water flows down toward the wick formed on the rear surface of the plate and the salt water evaporates from an energy source such as solar energy toward the front surface of the plate and condensed into fresh water. It has a flowing structure.

For example, in FIG. 1 , at least four evaporation plates may be provided, and each evaporation plate may be defined as a first evaporation plate to a fourth evaporation plate.

Meanwhile, in the present specification, for understanding, 'front' and 'rear' are defined as directions facing the sun and opposite directions, respectively.

Referring to FIG. 1 , the internal configuration of the brine desalination apparatus 100 according to the prior art is formed on the rear surface of the first plate 111 and the first plate 111 on the surface receiving evaporation energy from an external energy source. A first evaporating plate 110 including a first wick 112 wetted with brine and flowing down, and a plurality of evaporating plates (for example, spaced apart from each other and arranged to face each other in the rear of the first evaporating plate) , second to fourth evaporation plates, 120, 130, 140) are provided. In the plurality of evaporating

plates

110, 120, 130, and 140, the brine vapor evaporated from the wick of the evaporating plate of the front stage is evaporated and diffused, and the diffused brine vapor is applied to the evaporator of the rear stage. It is condensed on the front side, condensed into water droplets, flows down the bottom, and then stored.

That is, in the first evaporating plate 110 that directly receives solar heat from the outermost portion close to the direction to which solar heat is irradiated among a plurality of evaporating plates for evaporating salt water to obtain fresh water, the brine flowing down through the wick is evaporated by solar heat. , in the

subsequent evaporation plates

120, 130, 140, not only the solar heat transferred from the evaporation plate of the front stage, but also the evaporated salt water vapor of the front end when the front surface of the plate (121, 131, 141) of each evaporation plate is condensed The latent heat of condensation that is released can be used to evaporate the brine flowing through the wick.

At this time, each of the

evaporation plates

110 , 120 , 130 , 140 includes

brine tanks

114 , 124 , 134 , 144 for supplying brine to the wick provided on the rear surface, and the brine stored in the brine tank. is partially evaporated as it flows into the wick.

In addition, each of the evaporating

plates

120, 130, and 140 of the next stage except for the first evaporating plate has a structure including

fresh water tanks

123, 133, 143 capable of storing distilled water condensed on the condensing surface and flowing. .

For reference, in FIG. 1, the distance between each evaporation plate is exaggerated and enlarged for convenience of explanation, but in reality, each for condensing the brine evaporated from the evaporating plate at the previous stage or to use the heat of condensation as a heat source for evaporating the brine. The evaporation plate is installed more closely than shown in FIG. 1 .

However, the salt water desalination apparatus 100 according to the prior art described above must be closely disposed between adjacent evaporation plates for an efficient desalination mechanism. Alternatively, the desalination efficiency may be deteriorated due to contact due to sudden circumstances such as accidents.

In addition, as the plurality of evaporating plates are closely arranged, there may be a problem in that parts of the evaporating plates adjacent to the rear end are damaged by the solar heat irradiated to the frontmost part. For example, a polymer film for waterproofing can be coated on the front surface of the evaporation plate, or a polymer material spacer can be installed to maintain a certain distance between two adjacent evaporation plates. The waterproof film or spacer at the immediate rear may be deformed or damaged by the sun's heat.

The saltwater desalination apparatus 300 according to an embodiment of the present invention is configured to solve the above-described conventional problems, and will be described in detail below.

For reference, in order to explain the configuration of the salt water desalination apparatus 300 according to an embodiment of the present invention in distinction from the conventional salt water desalination apparatus shown in FIG. 1 described above, the names of some components are defined differently.

2 is a view showing a salt water desalination apparatus according to an embodiment of the present invention, Figure 3 is an enlarged view of part III of FIG.

1 and 2, the brine desalination apparatus according to an embodiment of the present invention uses the same principle of desalination of brine in the conventional brine desalination apparatus having a multi-stage structure described above, but with a slightly different structure. can solve problems that occur in

The brine desalination apparatus 300 according to an embodiment of the present invention includes a plurality of

evaporation units

310 and 320 spaced apart from each other and arranged to face each other. For convenience of description, in this specification, reference numeral 320 may mean one evaporation unit disposed at the rear of the front evaporation unit 310, and n evaporation units (eg, first to nth evaporation units ( 320-1, 320-2, ..., 320-n)). Here, the n-th evaporation unit 320 - n means an n-th evaporation unit from the front except for the front evaporation unit 310 among the plurality of evaporation units.

The plurality of evaporation units, the front evaporation unit 310 disposed in the outermost (ie, the frontmost) to which solar heat is irradiated, the front evaporation unit 310 and the first evaporation unit 320-1 which are spaced apart from each other and disposed to face each other ), a first spacer 314-1 disposed between the front evaporation unit 310 and the first evaporation unit 320-1, and between the front evaporation unit 310 and the first spacer 314-1. and a thermal insulation layer 317 disposed thereon.

2 and 3 , the front evaporation unit 310 may have a multi-layer structure, and may include a heat absorbing layer 311 and a front wicking layer 312 .

The heat absorbing layer 311 is a portion to which solar heat is irradiated, and may absorb solar heat. For example, the heat absorbing layer 311 may be formed of a black plate to increase the heat absorption rate, but is not limited thereto, and may have the same configuration as the waterproof layer of the first to nth evaporation units to be described later, and the waterproof layer It may consist of a multi-layer in which a black coating layer is laminated on the front surface of the

The front wick layer 312 is disposed behind the heat absorbing layer 311, and is a portion where salt water is evaporated as it flows. The front wick layer 312 may be made of a material wetted with salt water and flowing down, for example, a material such as cloth, fabric, or paper, and the salt water is supplied from the upper end and the salt water flows down by gravity and capillary phenomenon. can

According to one embodiment, the front wicking layer 312 may be configured to be bonded or adhered to the front layer. In addition, the front wicking layer 312 may be surface-treated to be hydrophilic, or may include hydrophilic particles on the surface. In addition, the surface of the front wicking layer 312 may be wrinkled to increase the surface area on which the salt water is evaporated.

According to an embodiment, a heat-conducting layer 315 may be provided between the front wicking layer 312 and the heat absorbing layer 311 . The heat conductive layer 315 may be made of a material having high thermal conductivity, for example, a metal plate or metal foil, and the heat energy absorbed into the heat absorbing layer 311 by solar heat can be uniformly transmitted to the front wicking layer 312 . have.

In more detail, the heat absorbed through the heat absorbing layer 311 is not uniformly transferred to the entire area of the front wicking layer 312 , but is localized in some areas (eg, areas where salt water is evaporated and dried). may be concentrated and transferred, and the locally concentrated heat in a partial region may cause thermal deformation of the first spacer 324 - 1 to be described later, which is a portion in contact with the rear of the front wicking layer 312 . Accordingly, the heat energy absorbed by the heat-conducting layer 315 into the heat absorbing layer 311 can be uniformly transmitted to the entire area of the front wicking layer 312 .

The first spacer 324-1 is a portion disposed between the front evaporation unit 310 and the first evaporation unit 320-1, and the front evaporation unit 310 and the first evaporation unit 320 are arranged to face each other. -1) can be separated from each other. For example, the first spacer 324 - 1 may be disposed on the front surface of the first evaporation unit 320-1. Accordingly, the first waterproof layer 321-1 of the first evaporation unit 320-1 and the front wick layer 312 of the front evaporation unit 310 are spaced apart from each other at a constant distance, so that the front wick layer 312 ), it is possible to prevent the salt water flowing from mixing with the fresh water on the first waterproofing layer 321-1.

Meanwhile, in FIG. 2 , the forward evaporation unit 310 (or the heat insulation layer 317 ) and the first spacer 324 - 1 are illustrated as being spaced apart, but the present invention is not limited thereto. The front surface may be arranged to abut against the rear surface of the front evaporation unit 310 (or the heat insulating layer 317 ).

According to an embodiment, the first spacer 324 - 1 may have a net shape and may be made of a polymer material. Accordingly, the first spacer 324-1 separates the front evaporation unit 310 from the first evaporation unit 320-1, and the water vapor evaporated in the front evaporation unit 310 is transferred to the first evaporation unit 320-1. ) can effectively perform the function of communication. In addition, since the material constituting the first spacer 324 - 1 can be saved to a minimum, the manufacturing cost of the brine desalination device can be reduced. The detailed configuration and manufacturing method of the first spacer 324 - 1 will be described later.

A heat insulating layer 317 may be disposed between the front evaporation unit 310 and the first spacer 324 - 1 . For example, the heat insulating layer 317 may be disposed between the front wick layer 312 of the front evaporation unit 310 and the first spacer 324 - 1 .

The heat insulating layer 317 is a portion for preventing the first spacer 324 - 1 made of a material weak to heat from being deformed by thermal energy from solar heat. The heat insulating layer 317 may be made of a material having low heat deformation while allowing water vapor to pass therethrough. For example, it may include paper, cloth, non-woven fabric, cotton, glass wool, and the like.

According to an embodiment, as shown in FIGS. 2 and 3 , the heat insulating layer 317 may constitute one of the multi-layer structures constituting the forward evaporation unit 310 . Alternatively, the heat insulating layer 317 may be made of the same material as the front wicking layer 312 or may be formed integrally with the front wicking layer 312 . For example, the front wicking layer 312 may have a greater thickness than the first to nth wicking layers 322-1, 322-2, ..., 322-n, which will be described later, and the first to nth wicking layers. (322-1, 322-2, ..., 322-n) may have a thickness three times or more.

Hereinafter, the first evaporation unit 320-1 will be described. On the other hand, according to an embodiment of the present invention, the second evaporation unit 320-2 after the first evaporation unit 320-1, . . . , may further include an nth evaporation unit (320-n). However, since the first to nth evaporation units have the same configuration, the first evaporation unit 320-1 will be mainly described.

The first evaporation unit 320-1 may include a first waterproof layer 321-1, a first wick layer 322-1, and a first collection pocket 323-1. According to an embodiment, the first evaporation unit 320-1 may have a multi-layer structure in which the first waterproofing layer 321-1 and the first wicking layer 322-1 are bonded to each other, and the first waterproofing layer 321 -1) at the lower portion of the first collection pocket 323-1 may be installed.

The first waterproof layer 321-1 may be made of a waterproof material that does not penetrate or get wet by water, and may be made of, for example, a polymer film. Accordingly, the salt water flowing through the front wick layer 312 may be evaporated and condensed on the first waterproof layer 321-1 to flow down.

A first collection pocket 323-1 for collecting fresh water condensed and flowing down in the first waterproof layer 321-1 may be provided at a lower portion of the first waterproof layer 321-1.

The first wick layer 322-1 is disposed on the rear surface of the first evaporation unit 320-1, and may have the same configuration as the front wick layer 312 described above.

On the other hand, a second evaporation unit 320-2 may be arranged at the rear of the first evaporation unit 320-1, and between the first evaporation unit 320-1 and the second evaporation unit 320-2 A second spacer 324 - 2 may be disposed. Since the second evaporation unit 320-2 has the same configuration as the above-described first evaporation unit 320-1, the second waterproofing layer 321-2, the second wicking layer 322-2, and the second It may include a collection pocket 323-2. Alternatively, the brine desalination apparatus 300 according to an embodiment of the present invention includes a first evaporation unit 320-1, a second evaporation unit 320-2, ... , the n-th evaporation unit (320-n) is arranged in order, except for the front evaporation unit 310 may be composed of n evaporation units 320 of the same structure. An n th spacer 324 - n is disposed in front of the n th evaporation unit 320 - n , and the n th evaporation unit 320 - n includes the n th waterproof layer 321 - n , the n th wicking layer 322 - n), and an nth collection pocket 323-n.

On the other hand, the brine desalination apparatus 300 according to an embodiment of the present invention may include a brine supply unit 370 for supplying brine to the plurality of evaporation units described above.

2 and 4 , the brine supply unit 370 may include a brine tank 375 in which brine is stored, and a supply wick 371 .

The supply wick 371 connects the brine tank 375 and the front wick layer 312 of the front evaporation unit 310, and may supply brine to the front wick layer 312 (hereinafter referred to as a front supply wick). . In addition, the supply wick 371 connects the brine tank 375 and the first wick layer 322-1 of the first evaporation unit 322-1, and supplies brine to the first wick layer 322-1. There may be (hereinafter referred to as the first supply wick). In addition, the supply wick 371 may connect the brine tank 375 and the second wick layer 322-2 of the second evaporation unit 320-2 (hereinafter referred to as a second supply wick), and the supply wick 371 may connect the brine tank 375 and the n-th wick layer 322-n of the n-th evaporation unit 320-n (hereinafter referred to as an n-th supply wick).

The supply wick 371 may be formed by stacking each other with a separation layer interposed between the aforementioned front supply wick and each of the first to nth supply wicks. For example, the supply wick 371 is a separate layer of a material in which water does not permeate between each wick (eg, front supply wick, first to n th supply wick) made of paper or fabric material. Interposed therebetween may have a stacked structure.

At this time, the separation layer may not exist at the upper end to which the brine is supplied so that the brine can be smoothly supplied to the supply wick 371 . That is, since the upper end of the supply wick 371 each wick is in contact with each other, salt water can be delivered to the entire supply wick 371 at the same density.

According to one embodiment, the cross-sectional area of the front supply wick may be larger than the cross-sectional area of the first supply wick. Alternatively, the thickness (D1) of the front supply wick may be greater than the thickness (D2) of the first supply wick. Accordingly, a greater amount of saline may be supplied through the front supply wick than the first supply wick. In more detail, since the closer to the front to which solar energy is irradiated, the more active the evaporation, the closer to the front, the more salt water needs to be supplied. In addition, if the second to nth evaporators are sequentially arranged in the rear of the first evaporator 320-1, the cross-sectional area or thickness of the supply wick may be sequentially decreased from the first supply wick to the nth supply wick. have. For example, in FIG. 4 , it may have a relationship of D1>D2>D3.

On the other hand, the supply wick 371 may be connected in such a way as to contact each wick layer of the plurality of evaporation units, and may be made of the same material as each wick layer of the plurality of evaporation units. The brine of the supply wick 371 may be supplied to each wick layer of the plurality of evaporation units by gravity and capillary action.

Through the brine supply unit 370 of such a simple structure, it is possible to configure a means for effectively distributing brine to a plurality of evaporation units at a low cost.

Meanwhile, detailed structures and exemplary manufacturing methods of the first to nth spacers disposed between the respective evaporation units will be described below. For convenience of description, the first to n-th spacers having the same structure are collectively referred to as a 'spacer', and the reference numeral 324 will be generically described.

5 and 6 are views showing a spacer in the brine desalination apparatus according to an embodiment of the present invention. FIG. 5 shows a state before the spacer 324 is installed in the brine desalination device 300 , and FIG. 6 shows a state of the spacer 324 in a state installed in the brine desalination device 300 .

The spacer 324 may be made of a polymer material that is lightweight, does not permeate or gets wet, and has a buffering action. For example, the spacer 324 may be made of a polystyrene foam board or a polyethylene foam material.

Referring to FIG. 5 , the spacer 324 before being installed in the brine desalination apparatus 300 has a thin plate shape and may have a plurality of openings 325 in the form of slits. For example, the spacer 324 may be manufactured by making a plurality of cuts that are misaligned with each other on a thin plate-shaped polystyrene foam board or polyethylene foam.

Referring to FIG. 6 , the spacer 324 installed in the brine desalination device 300 has a form in which the left and right sides of the spacer 324 shown in FIG. 5 are pulled, and the spacer 324 of the form shown in FIG. 5 . It may be installed in the salt water desalination apparatus 300 in a state in which the opening 325 in the form of a slit by extending the slit 325 is transformed into the opening 325 in the form of a figure having a sufficiently large area. For example, the spacer 324 installed in the salt water desalination apparatus 300 may have an opening 325 in the form of a square, a rhombus, a diamond, a circle, an oval, or the like. Accordingly, since the spacer 324 can be efficiently manufactured using a small amount of material, the manufacturing cost can be reduced.

The brine desalination apparatus 300 according to an embodiment of the present invention may include a housing 350 accommodating the plurality of

evaporation units

310 and 320 described above.

Referring to FIG. 7 , the housing 350 may have a structure in which a front supporter 351 and a rear supporter 356 are coupled to a body having open front and rear surfaces. In addition, a brine supply unit 370 may be installed at the upper portion.

The front support 351 may be made of a transparent material to pass solar heat to the front evaporation unit 310, but is not limited thereto. The back support 356 may fix and support the components inside the housing including the plurality of evaporation units.

According to an embodiment, the housing 350 may include a fresh water outlet 353 and a salt water outlet 352 .

The fresh water outlet 353 may take out the fresh water condensed in the first evaporation unit 320-1. For example, the fresh water outlet 353 may be connected to the first collection pocket 323 - 1 to take out the fresh water collected in the first collection pocket 323 - 1 . In addition, the fresh water outlet 353 is connected to the second to n-th collection pockets 323-2, ..., 323-n, and the second to n-th collection pockets 323-2, ..., 323-n are collected. Fresh water can be withdrawn.

The salt water outlet 352 may take out the salt water flowing down from the front evaporation unit 310 . For example, the salt water outlet 352 may be connected to the front wick layer 312 and the salt water flowing down along the front wick layer 312 may be taken out. In addition, the salt water outlet 352 is connected to the first to nth wicking layers 322-1, ..., 322-n and flows along the first to nth wicking layers 322-1, ..., 322-n. Brewed brine can be withdrawn.

According to one embodiment, a drip tray 357 may be provided on the outer surface of the housing 350 . For example, referring to FIG. 7 , on the front surface of the housing 350, that is, on the outer surface of the front support 351, water (eg, rainwater) flowing along the outer surface of the front support 351 is collected in a drip tray ( 357) may be provided. At this time, in the drip tray 357, a concave groove 358 may be formed along the extension direction of the drip tray 357 so that water is well collected, and the drip tray 357 so that the water collected in the groove 358 can flow to one side. ) can be inclinedly arranged. Accordingly, the water collected through the drip tray 357 may be recycled in the brine desalination device 300 instead of brine for desalination.

As described above, the brine desalination device 300 according to an embodiment of the present invention can reduce manufacturing costs by reducing parts and materials and simplifying the structure, and the forward evaporation unit 310 that receives solar heat directly. By providing the heat insulating layer 317 and the heat conductive layer 315 to the solar heat, it is possible to prevent deformation or damage to parts such as the spacer.

Although the present invention has been described through preferred embodiments as described above, the present invention is not limited thereto, and various modifications and variations are possible without departing from the concept and scope of the following claims. Those in the technical field to which it belongs will readily understand.

(Explanation of symbols)

300: brine desalination device 310: forward evaporation unit

311: heat absorbing layer 312: anterior deep layer

315: heat conductive layer 317: heat insulating layer

320-1, 320-2, 320-n: a first evaporation unit, a second evaporation unit, an n-th evaporation unit

321-1, 321-2, and 321-n: a first waterproofing layer, a second waterproofing layer, and an nth waterproofing layer

322-1, 322-2, 322-3: the first deep layer, the second deep layer, the nth deep layer

323-1, 323-2, 323-n: first collection pocket, second collection pocket, n-th collection pocket

324-1, 324-2, 324-n: first spacer, second spacer, n-th spacer

350: housing 351: front support

352: salt water outlet 353: fresh water outlet

356: rear support 357: drip tray

358: guide groove 370: salt water supply

371: supply wick 372: separation layer

375: brine tank

Claims

A brine desalination device comprising a plurality of evaporation units spaced apart from each other and arranged to face,

The plurality of evaporation units,

a front evaporation unit disposed on the outermost side to which solar heat is irradiated, and including a front wick layer that is evaporated while salt water flows;

a first evaporation unit facing the front wicking layer and including a first waterproofing layer in which water vapor evaporated from the front wicking layer is condensed into fresh water;

a first spacer disposed between the front wicking layer and the first waterproofing layer; and

a heat insulating layer disposed between the front wicking layer and the first spacer;

A brine desalination device comprising a.
The method of claim 1,

The front evaporation unit,

a heat absorbing layer that receives sunlight and absorbs solar heat; and

The brine desalination device further comprising a heat-conducting layer disposed between the heat absorbing layer and the front wick layer.
The method of claim 1,

The first spacer has a net shape, brine desalination device.
The method of claim 1,

and the first evaporation unit comprises a first collection pocket for collecting fresh water flowing from the first waterproofing layer.
The method of claim 1,

The first evaporation unit further comprises a first wick layer disposed behind the first waterproofing layer, salt water desalination device.
6. The method of claim 5,

a second evaporation unit facing the first wicking layer and including a second waterproofing layer in which water vapor evaporated from the first wicking layer is condensed into fresh water; and

and a second spacer disposed between the first evaporation unit and the second evaporation unit.
7. The method of claim 6,

Further comprising a brine supply unit that supplies brine to the front wick and the first wick and includes a brine tank in which brine is stored,

The brine supply unit,

A brine desalination device comprising: a front supply wick connecting the brine tank and the front wick; and a first supply wick that connects the brine tank and the first wick.
8. The method of claim 7,

The brine desalination apparatus, wherein the cross-sectional area of the front supply wick is larger than the cross-sectional area of the first supply wick so that a greater amount of brine is supplied through the front supply wick than the first supply wick.
8. The method of claim 7,

The brine supply unit,

Further comprising a separation layer disposed between the front supply wick and the first supply wick,

The front feed wick, the first feed wick, and the separation layer are stacked on each other.
The method of claim 1,

Further comprising a housing accommodating the plurality of evaporation units,

The housing is

and a fresh water outlet through which the fresh water condensed in the first evaporation unit is taken out and a salt water outlet through which the salt water flowing down from the front evaporation unit is taken out.
11. The method of claim 10,

On the outer surface of the housing

A brine desalination device provided with a drip tray arranged to be inclined so that water flowing along the outer surface of the housing is collected and flowed.