KR20150019003A - A system for electricity generation and water desalination - Google Patents

Abstract

Provided is a hybrid generation and desalination system. The system includes one or more seawater storage tank installed at a depth equal to or deeper than a predetermined depth from a seawater surface to store seawater introduced through an intake; a generation device module including an intake pipe for transferring seawater to the seawater storage tank, and a generator using potential energy of the transferred seawater to generate electricity; a first desalination device module evaporating the seawater stored in the storage tank to transfer the vaporized fresh water to a fresh water storage tank through a pipe in order to desalinate the water; and a second desalination device module including first and second pressing tanks using pressure of the seawater stored in the storage tank to supply pressure, and a desalinator using the pressure supplied from the first and second pressing tanks to desalinate the seawater in a reverse osmotic pressure way.

Description

A SYSTEM FOR ELECTRICITY GENERATION AND WATER DESALINATION

The present invention relates to combined power generation and desalination systems.

Background Art [0002] Generating apparatuses are devices for generating electric energy necessary for daily use, and there is a fear of causing environmental pollution or environmental destruction. Recently, development of environmentally friendly power generation apparatus using natural power such as solar heat, water power, and wind power has been promoted.

However, in the case of a power generation apparatus using natural power, it is difficult to predict a power generation amount, and it is often difficult to stably produce a constant power.

Meanwhile, various technologies for producing fresh water using sea water have been applied recently, but it is difficult to produce cost effective freshwater because the amount of energy (kwh / ton) required for production of fresh water compared to energy input is very high.

Therefore, there is a need to develop efficient energy technologies through fusion between technologies that produce more stable power using natural power and produce water using it.

In this context, it is an object of the present invention to provide a combined power generation and desalination system.

In order to achieve the above-mentioned object, in one aspect, the present invention provides a water treatment system comprising at least one seawater reservoir installed below a certain depth from the sea surface to store seawater taken through a water intake; A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe; A first desalination unit module for evaporating seawater stored in the storage tank to transfer fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate the fresh water; And first and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks And a second desalination unit module including the desalination unit and the second desalination unit.

The power generation unit module may be installed inside a machine room installed in the basement above a predetermined depth from the sea level. The power generation unit module may include a plurality of generator units installed at a plurality of different positions.

The water intake pipe may be designed to be vertical more than a predetermined length.

And a distributor for storing or distributing electric power generated in the power generator module.

The first desalination device module may include heating means for raising seawater in the storage tank through heat exchange with seawater using geothermal heat.

The first desalination device module may include heating means for raising seawater in the storage tank using power generated through at least one of the power generation module, solar power generation, and wind power generation.

The first desalination device module may further include a blower installed for transferring the fresh water in the vapor state conveyed through the pipe.

The first desalination device module may further include condensation means for condensing the vaporized fresh water transferred through the pipeline.

In the second desalination device module, the first pressurization tank may be installed near the storage tank, and the second pressurization tank may be installed near the desalination means.

The seawater reservoir may include a hydraulic lift.

The seawater storage tank may have an opening for removing by-products generated by evaporation of seawater by using the hydraulic lift.

In another aspect, the present invention provides a method of recovering seawater, comprising: at least one seawater reservoir installed below a certain depth from the sea surface for storing seawater taken through a withdrawal port; A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe; And a desalination device module for evaporating seawater stored in the storage tank by using geothermal power or power generated by at least one of the power generation module, wind power, and solar light to transfer the fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate the fresh water. To provide a combined power generation and desalination system.

According to another aspect of the present invention, there is provided an air conditioning system comprising: at least one sea water reservoir installed below a certain depth from a sea surface for storing sea water taken through a water intake; And a generator module including power take-off pipes for transferring the seawater to the seawater storage tank and power generation using the potential energy of the seawater transferred along the take-off pipe, to provide.

In yet another aspect, the present invention provides a water treatment system comprising at least one seawater reservoir installed below a certain depth from the sea surface for storing seawater taken through a withdrawal port; A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe; And first and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks And a desalination device module including the desalination device module.

As described above, according to the present invention, it is possible to produce electric power and produce fresh water in an environmentally friendly and economical manner in the course of the potential energy circulation of seawater.

In addition, by using seawater, which is an unlimited resource, stable electric power can be produced regardless of time or natural conditions.

It is possible to construct the combined power generation and desalination apparatus and the system using the underground space near the coast without restriction on the necessity of the separate artificial structure or the natural space at the high position so that the cost can be reduced and the necessity of the land acquisition can be reduced have.

Also, due to the fact that it is located on the coast, more power can be secured by utilizing offshore wind power resources.

FIG. 1 is a schematic view illustrating components of a combined power generation and desalination system according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a schematic view illustrating components of a combined power generation apparatus according to an embodiment of the present invention. Referring to FIG.
FIG. 3 is a simplified view of the components of a combined desalination apparatus according to an embodiment of the present invention.
Figure 4 is a simplified view of other components of the combined desalination apparatus in accordance with an embodiment of the present invention.
FIG. 5 is a schematic view illustrating an example of components of a seawater storage tank according to an embodiment of the present invention. Referring to FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

FIG. 1 is a schematic view illustrating components of a combined power generation and desalination system according to an embodiment of the present invention. Referring to FIG.

The combined power generation and desalination system according to the present invention includes a small hydroelectric power generation system using position energy from sea level and an underground sea water storage system for desalination and potential energy generation using reverse osmosis apparatus using high pressure according to water load due to seawater storage The system is capable of generating and using complex energy such as seawater evaporation and additional desalination using renewable energy sources.

Referring to FIG. 1, a combined power generation and desalination system according to an embodiment of the present invention includes a small hydropower generator module 10, a first desalination device module 20, and a second desalination device module 10 using position energy from sea level 30).

In addition, the combined power generation and desalination system according to an embodiment of the present invention includes a storage tank 5 installed at a predetermined depth necessary for small-scale hydroelectric power generation from sea level to utilize the potential energy of seawater. The storage tank 5 can be installed inside the machine room 1 at a predetermined depth in an underground space near the shore, for example.

The small hydroelectric power generating apparatus module 10 includes a water intake pipe 11 installed at a predetermined position below the sea level to transfer the seawater taken from the water intake port for taking seawater to the storage tank 5, And a distributor 15 for accumulating or distributing the electric power generated from the small hydrostatic generator 13 and the small hydrostatic generator 13 provided at one side of the water intake pipe 11 at a position below a predetermined depth from the water intake of the small water turbine 11 do.

Meanwhile, the first desalination device module 20 includes a first heater 21 and / or a second heater 23 that heats the water in the storage tank 5 using geothermal heat and / or electric power, and a first heater 21 And a pipe 25 for transferring the fresh water in the vapor state evaporated by the second heater 23 to the fresh water storage tank 7.

The fresh water which has been changed to the steam state in the storage tank 5 can be moved to the fresh water storage tank 7 on the ground by using the self-lifting force and the pressure of the storage tank 5, and the first desalination device module 20, And an air blower 27 that is driven by electric power when necessary to move the air blower.

Meanwhile, the first desalination device module 10 may further include a separate condenser 29 for condensing the fresh water in the vapor state moving to the fresh water storage tank 7 through heat exchange.

The second desalination device module 30 includes a hydraulic lift 6, a first pressurizing tank 33 and a second pressurizing tank (not shown) for receiving a pressure required for the reverse osmosis pressure using the load of seawater stored in the reservoir 5 37), and a reverse osmosis type desalinizer (39) for desalinating the seawater by the reverse osmosis method and storing the seawater in the fresh water storage tank (7).

Although the present invention has been described above with reference to the case where the fresh water storage tank 7 is implemented as one storage tank, the present invention is not limited thereto and may be applied to a plurality of fresh water storage tanks or first and second desalination device modules 20 and 30 Or by connecting different fresh water reservoirs.

FIG. 2 is a view schematically showing components of a small hydropower generator module 10 of a combined power generation apparatus according to an embodiment of the present invention.

The water intake pipe 11 connected from the intake port of the small hydro power generation module 10 to the storage tank 5 is vertically designed to have a predetermined length or longer so that the seawater falls down at a constant speed and a predetermined amount using gravity, It should be designed to a sufficient degree for small hydropower generation.

In addition, the intake port of the small hydro power generation module 10 may include a control unit (not shown) so as to control the amount of seawater flowing into the intake pipe 11.

The small hydrostatic generator 13 installed on one side of the water intake pipe 11 is a small hydroelectric power generator which generates electricity using the potential energy of the seawater flowing in through the water intake pipe 11 through the intake pipe 11, May be the same known power generation device.

Also, although only one small hydrostatic generator 13 is illustrated in the drawing, a plurality of small hydrostatic generator units may be installed if necessary, and a plurality of small hydrostatic generators may be installed at different locations.

The distributor 15 may accumulate electric power generated by the small hydrostatic generator 13 or may distribute the electric power to the electric power storage unit 60 or the heater 21 or 23 and transmit the electric power.

The small hydropower generator module 10 can be constructed using an underground space near a coast without restriction on the necessity of a separate artificial structure installed on the ground or a high natural space.

In addition, instead of using the potential energy of the stored water by transferring the water to the existing high position of the ground, a reservoir is installed in the ground below a certain depth from the sea surface, and the energy of water due to the natural fall using gravity is used. Stable small hydro power generation is possible.

FIG. 3 is a view schematically showing the components of the first desalination device module 20 of the complex desalination apparatus according to an embodiment of the present invention.

The first heater 21 of the first desalination device module 20 is supplied with the power generated by using the solar light in the geothermal or solar power generation device 40, And heating means for raising the temperature of the seawater in the storage tank 5.

The second heater 23 of the first desalination device module 20 is also connected to the storage tank 10 using the electric power generated by the small hydropower generator module 10, the photovoltaic generator device 40 or the wind turbine generator 50, for example. (5).

The fresh water in the vapor state evaporated by the first heater 21 and / or the second heater 23 is moved to the fresh water storage tank 7 on the ground by utilizing the self-lifting force and the pressure resulting from the evaporation of seawater in the storage tank 5 . However, if it is necessary to move the fresh water in the vapor state in the storage tank 5, a blower 27 may be separately provided.

The fresh water which has changed to the steam state in the storage tank 5 can be moved to the fresh water storage tank 7 on the ground using the self-lifting force and the pressure of the storage tank 5, The external power generated by the power generation device 40 or the wind power generation device 50 can be used to accelerate the movement of the fresh water in the steam state.

The condenser 29 also has a water intake pipe and a drain pipe and condenses the steam in the vapor state moving from the storage tank 5 to the fresh water storage tank 7 through a heat exchange method with seawater taken separately and supplies the condensed water to the fresh water storage tank 7 .

The first desalination device module 20 moves seawater in the storage tank 5 by using geothermal heat without supplying any external power or by minimizing power supply by environmentally friendly power generation means such as solar power or wind power, Can be desalinated.

4 is a view schematically showing the components of the second desalination device module 30 of the complex desalination apparatus according to an embodiment of the present invention.

The hydraulic lift 6, the first pressurizing tank 33, and the second pressurizing tank 37 of the second desalination device module 30 supply the pressure necessary for desalination of the reverse osmosis system.

The first pressurizing tank 33 may be installed in the basement just like the inside of the machine room 1 and the second pressurizing tank 37 may be provided on the ground adjacent to the reverse osmosis type desalinator 39, Can be installed. The pipe 31 or 35 connected to the first pressurizing tank 33 and the second pressurizing tank 37 may have valves 32 or 34, respectively.

The reverse osmosis type desalinizer 39 is supplied with the pressure generated by the hydraulic lift 6, the first pressurizing tank 33 and the second pressurizing tank 37, Is a desalination means of reverse osmosis type that can desalinate water. For this purpose, the reverse osmotic pressure desalination unit 39 applies a known reverse osmosis technique.

Although not shown in the drawing, the seawater storage tank 5 may be provided with an opening (not shown) on the upper part thereof so as to be openable and closable. For example, byproducts remaining in the storage tank 5 due to evaporation of seawater Salt or the like is stacked by a predetermined amount or more, for example, the hydraulic lift 6 is transported to the uppermost portion of the storage tank 5, and then the upper opening (not shown) of the storage tank 5 is opened Can be processed.

Therefore, the desalination apparatus according to the embodiment of the present invention is designed to overcome the characteristics of the renewable energy source generated intermittently according to the conditions of the external natural environment and to support the small- It can be used as an auxiliary means.

In addition, the second desalination device module 30 includes a first desalination device module 20 and a second desalination device module 20. The second desalination device module 30 includes a first desalination device module 20, . ≪ / RTI >

Also, unlike the existing technology for producing fresh water, the first and second desalination device modules 20 and 30 can produce fresh water cost-effectively because the amount of energy required for freshwater production is very small.

The combined power generation and desalination system according to the present invention achieves efficient energy production and desalination at the same time from the viewpoint of the whole system through fusion between technologies capable of mutual match in terms of energy conversion, To provide a composite energy utilization technology.

FIG. 5 is a view schematically showing an example of components of a seawater storage tank 5 according to an embodiment of the present invention.

Referring to FIG. 5, the seawater storage tank 5 according to the embodiment of the present invention may be applied to a single storage tank system or a plurality of storage tank systems.

Referring to the drawings, the pressure generated in each reservoir 5 flows into the first pressurization tank 33 and then into the second pressurization tank 25, 39) to desalinate the seawater in reverse osmosis.

The application of the first and / or second heaters 21 and / or 23 of the first desalination device module 20 to each of the reservoirs 5 is not shown in the drawings, The fresh water in the steam state can be moved through the piping 25 or can be moved integrally into one piping 25.

Therefore, sufficient seawater can be secured to desalinate seawater by reverse osmotic pressure with sufficient inflow of seawater for small hydro power generation.

INDUSTRIAL APPLICABILITY According to the present invention, unlimited seawater can be used, and it is possible to solve problems such as loss due to evaporation which may occur when water is stored for a long time compared to existing desalination systems.

In addition, when the storage capacity of the storage tank is secured, stable power can be secured through small-scale hydroelectric power generation using potential energy at any time, and if necessary, it can be utilized as power required for evaporation for desalination. .

In addition, major facilities can be installed and operated in the basement, which can solve the difficulties of securing land.

Since it is located in the coastal area due to the characteristics of power generation using seawater, the utilization of offshore wind power resources can be further enhanced, and thus, it can serve as a source of generating and storing power energy capable of solving the problems of intermittent renewable energy sources .

In addition, operating cost and economic efficiency can be improved through the development using multiple energy sources. That is, in the course of the site energy circulation, for example, the storage capacity of the seawater can be ensured by the evaporation of the seawater, the desalination can be achieved simultaneously, and the power generation through the small hydroelectric power generation and the reverse osmosis The system configuration that can be used for the purpose greatly improves the overall system operation efficiency and contributes to cost-effective economical efficiency.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: generator module 20: first desalination module
30: Second Desalination Unit Module 5: Reservoir

Claims (22)

At least one seawater reservoir installed below a certain depth from the sea surface to store seawater taken through the withdrawal port;
A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe;
A first desalination unit module for evaporating seawater stored in the storage tank to transfer fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate the fresh water; And
First and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks And a second desalination device module including a second desalination device module.
The method according to claim 1,
Wherein the power generation device module is installed in a machine room installed in a basement above a predetermined depth from the sea level.
The method according to claim 1,
Wherein the power generation unit module includes a plurality of generator units installed at a plurality of different positions.
The method according to claim 1,
Wherein the water intake pipe is vertically designed to have a predetermined length or more.
The method according to claim 1,
Further comprising a distributor for storing or distributing power generated by the generator module.
The method according to claim 1,
Wherein the first desalination unit includes heating means for raising seawater in the storage tank through heat exchange with seawater using geothermal heat.
The method according to claim 1,
Wherein the first desalination device module includes heating means for raising the temperature of the seawater in the storage tank using electric power generated through at least one of the power generation device module, solar power generation, and wind power generation. system.
The method according to claim 1,
Wherein the first desalination device module further comprises a blower installed for transferring the fresh water in the vapor state conveyed through the pipeline.
The method according to claim 1,
Wherein the first desalination device module further comprises condensing means for condensing the steam in the vapor state transferred through the piping.
The method according to claim 1,
Wherein in said second desalination unit module said first pressurized tank is installed near said reservoir and said second pressurized tank is installed near said desalination means.
The method according to claim 1,
Wherein the seawater storage tank comprises a hydraulic lift.
12. The method of claim 11,
Wherein the seawater storage tank has an opening for removing by-products generated by evaporation of seawater by using the hydraulic lift.
At least one seawater reservoir installed below a certain depth from the sea surface to store seawater taken through the withdrawal port;
A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe; And
A desalination device module for evaporating seawater stored in the storage tank using geothermal power or power generated by at least one of the power generation module, wind power, and solar light to transfer the fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate Including combined power generation and desalination systems.
14. The method of claim 13,
The desalination device module includes heating means for raising the temperature of the seawater in the storage tank through heat exchange of seawater using geothermal heat and power generation means for generating seawater by using power generated by at least one of the power generation module, And heating means for raising the temperature of the seawater in the seawater.
14. The method of claim 13,
Wherein the desalination device module further comprises a blower installed for transferring the fresh water in the vapor state conveyed through the piping.
14. The method of claim 13,
Wherein the desalination device module further comprises condensing means for condensing the vaporized fresh water transferred through the piping.
14. The method of claim 13,
First and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks Further comprising a desalination device module including a desalination device module.
At least one seawater reservoir installed below a certain depth from the sea surface to store seawater taken through the withdrawal port; And
And a power generation unit that generates power using the potential energy of the intake water pipe for conveying the seawater to the seawater storage tank and the seawater transferred along the water intake pipe.
19. The method of claim 18,
A desalination device module for evaporating seawater stored in the storage tank using geothermal power or power generated by at least one of the power generation module, wind power, and solar light to transfer the fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate Further comprising the steps of:
19. The method of claim 18,
First and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks Further comprising a desalination device module including a desalination device module.
At least one seawater reservoir installed below a certain depth from the sea surface to store seawater taken through the withdrawal port;
A generator module including a water intake pipe for transferring the seawater to the seawater storage tank and a power generation means for generating electric power using the potential energy of the seawater transferred along the water intake pipe; And
First and second pressure tanks for supplying pressure using the pressure of seawater stored in the storage tank and desalination means for desalinating seawater in reverse osmosis using the pressures supplied from the first and second pressurizing tanks And a desalination device module including the desalination device module.
22. The method of claim 21,
A desalination device module for evaporating seawater stored in the storage tank using geothermal power or power generated by at least one of the power generation module, wind power, and solar light to transfer the fresh water in a vapor state to a fresh water storage tank through a pipe to desalinate Further comprising the steps of:

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