KR20130027185A - Heat pump used fresh water generator - Google Patents

Abstract

PURPOSE: A tide apparatus using a heat pump is provided to produce fresh water by easily desalinating seawater, to establish equipment which produces fresh water with a simple configuration, and to apply the apparatus in various places and equipment in which fresh water is needed. CONSTITUTION: A tide apparatus comprises a desalination unit(100), a warm water circulating system(200), a refrigerant circulating system(300), and a fresh water storage system(400). The desalination unit produces fresh water by evaporating seawater through the first heat exchange of warm water and sea water, and the second heat exchange of a gas refrigerant in low temperature and low pressure and vapor obtained by evaporating the seawater. The warm water circulating system supplies the warm water to the desalination unit through the third heat exchange between raw water and a gas refrigerant in high temperature and high pressure, and circulates cold water generated by the first heat exchange to execute the third heat exchange. Once the gas refrigerant in low temperature and low pressure becomes a mixed refrigerant in low temperature and low pressure through the second heat exchange, the refrigerant circulating system produces the gas refrigerant in high temperature and high pressure for the third heat exchange by compressing after the separation of a liquid refrigerant. Once the gas refrigerant in high temperature and high pressure becomes a liquid refrigerant in high temperature and high pressure through the third heat exchange, the refrigerant circulating system provides a gas refrigerant in low temperature and low pressure to the desalination unit through conversion. The fresh water storage system stores the fresh water produced through the desalination unit. [Reference numerals] (AA) Fresh water; (BB) Seawater

Description

Tidal device using heat pump {HEAT PUMP USED FRESH WATER GENERATOR}

The present invention relates to a fresh water generator using a heat pump capable of desalination of seawater using a heat pump.

As is well known, the tidal water device is a device for producing fresh water by desalination of sea water, and may produce fresh water by a technique of removing salt, that is, boiling sea water to evaporate it into water vapor and condensing it.

In particular, a ship, a ship, etc. that operate the sea may depart in a state in which the drinking water required for the operation is stored in a ship or a vessel, or may be secured by using a tidal device.

In general, such a tidal system is a method of manufacturing seawater as fresh water using reverse osmosis, and when the seawater is transferred to a high-pressure pump and subjected to a high pressure greater than osmotic pressure and passes through the membrane, only fresh water in the seawater passes through the membrane, and salt By allowing the silver to separate, fresh water can be produced.

In addition, in the case of a low pressure evaporation tidal device applied to the vessel can be produced fresh water by using the cooling water (jaket water) or the steam of the boiler which is the remaining heat source of the engine in a vacuum state inside.

However, when departing from a state in which the drinking water required for the vessel is stored as described above, a large drinking water storage space is required separately, and there is a problem in that it takes a lot of cost to purchase the drinking water.

In addition, as described above, the reverse osmosis type fresh water generator is used in a large factory facility or a desalination plant, and requires a large processing facility and requires a large cost. In the case of no offshore structure, several generator engines should be installed, and these generator engines have severe load fluctuations, so the amount of coolant produced by waste heat is not constant, and thus there is a limit to uniform application to ships.

The present invention utilizes the configuration of a heat pump including a compressor, a condenser and an evaporator to evaporate seawater through heat exchange with heated water at low pressure, and to condense water vapor through heat exchange between cold water and steam passing through an expansion valve. It is an object of the present invention to provide a tide device using a heat pump capable of producing fresh water.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

According to an embodiment of the present invention, after the evaporation of the seawater through the first heat exchange of the supplied seawater and hot water, the desalination unit for producing fresh water by condensing through a second heat exchange of the low-temperature low-pressure gas refrigerant and water vapor, and A hot water circulation system for supplying the hot water to the desalination unit through a third heat exchange between the purified raw water and a high temperature and high pressure gas refrigerant, and circulating the cold water generated according to the first heat exchange to perform the third heat exchange; When the low-pressure gaseous refrigerant becomes a low-temperature low-pressure mixed refrigerant through the second heat exchange, the liquid refrigerant is separated and then compressed to provide the high-temperature and high-pressure gaseous refrigerant for the third heat exchange, and the high-temperature through the third heat exchange. When the high-pressure liquid refrigerant, the refrigerant circulation system for converting the gas refrigerant of the low temperature and low pressure for the second heat exchanger and provided to the desalination unit, A tidal device using a heat pump including a fresh water storage system for storing the fresh water manufactured by the desalination unit may be provided.

In the present invention, by performing a first heat exchange of the hot water and seawater provided through the hot water circulation system, and performing a second heat exchange of the low temperature and low-pressure gas refrigerant provided through the refrigerant circulation system and the refrigerant generated therefrom to prepare fresh water, Desalination can easily produce fresh water, and can build a facility for manufacturing fresh water with a simple configuration has the advantage that can be installed in a variety of locations and equipment that requires fresh water.

1 is a block diagram of a tidal device using a heat pump according to an embodiment of the present invention,
2 is a flowchart illustrating a process of desalination of seawater according to another embodiment of the present invention.

Advantages and features of the embodiments of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

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. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a tidal device using a heat pump according to an embodiment of the present invention.

Referring to FIG. 1, the tidal water device according to an embodiment of the present invention may include a desalination unit 100, a hot water circulation system 200, a refrigerant circulation system 300, and a fresh water storage system 400.

The desalination unit 100 evaporates the seawater through the first heat exchange between the supplied seawater and the hot water, and then condenses it through a second heat exchange between the low temperature and low pressure gas refrigerant and water vapor to produce fresh water. ), An evaporation tank 120, a first separator 130, a vacuum pump 140, a second separator 150, and the like.

The first supply valve 110 is a valve adjusted to supply seawater to the desalination unit 100, and supplies seawater required for the desalination unit 100 to the desalination unit 100 through a valve opening, and the seawater through the valve closing. Supply can be selectively shut off.

The evaporation tank 120 is partitioned into a first internal space for performing a first heat exchange using sea water and hot water, and a second internal space for performing a second heat exchange using a gas refrigerant and water vapor at low temperature and low pressure. Fresh water is produced by condensing water vapor evaporated through a second heat exchange.

The first separator 130 is provided in the partition portions of the first inner space and the second inner space, and separates the liquid vapor from the vapor evaporated in the first inner space to provide gaseous water vapor to the second space. Of course, the first separator 130 may be provided with a filter for removing salt.

The vacuum pump 140 discharges the internal air of the second internal space to maintain the second internal space in a vacuum state, and when the internal air is discharged, the second pump blocks the external discharge of fresh water produced in the second internal space. Separator 150 may be provided on the path of vacuum pump 140 and evaporation tank 120.

The hot water circulation system 200 supplies hot water to the desalination unit 100 through a third heat exchange between the supplied raw water and a high temperature and high pressure gas refrigerant, and circulates the cold water generated according to the first heat exchange to perform a third heat exchange. The second supply valve 210, the auxiliary tank 220, the first condenser 230, the circulation pump 240, and the like may be included.

The hot water circulation system 200 is the first condenser 230 at the rear end of the auxiliary tank 220, the circulation pump 240 at the rear end of the first condenser 230, the rear end of the circulation pump 240 is the evaporation tank 120 Is connected to the interior of the seawater stored in the first internal space of the, may be connected to the front end of the auxiliary tank 220 is extended to the outside in the first internal space, the second supply valve 210 in front of the auxiliary tank 220 Can be connected.

The second supply valve 210 is a valve adjusted to supply raw water, and supplies raw water to the auxiliary tank 220 through valve opening to circulate hot water in the hot water circulation system 200, and supplies raw water through a valve closing. You can block. Such raw water can use sea water, fresh water, etc., for example. Here, the supplied raw water may be temporarily stored in the auxiliary tank 220.

When the raw water temporarily stored in the auxiliary tank 220 is supplied to the first condenser 230, the first condenser 230 heats the raw water provided through the third heat exchange using the high temperature and high pressure gas refrigerant and the raw water to discharge hot water.

The circulation pump 240 may circulate the hot water by pumping the discharged hot water to pass seawater stored in the first internal space of the evaporation tank 120 provided in the desalination unit 100.

When the low temperature and low pressure gas refrigerant becomes the low temperature low pressure mixed refrigerant through the second heat exchange, the refrigerant circulation system 300 separates and compresses the liquid refrigerant to provide a high temperature and high pressure gas refrigerant for the third heat exchange. When the high temperature and high pressure liquid refrigerant through, to convert to a low temperature low pressure gas refrigerant for the second heat exchange to provide to the desalination unit 100, the liquid separator 310, the compressor 320, the first condenser 230 , A second condenser 330, a receiver 340, an expansion valve 350, and the like. Here, the first condenser 230 is connected to the rear end of the auxiliary tank 220 provided in the hot water circulation system 200 and connected to the rear end of the compressor 320 provided in the refrigerant circulation system 300 to perform a third heat exchange. Since the same reference numerals are used, the following description will be given with the configuration included in the hot water circulation system 200 and the refrigerant circulation system 300, respectively.

The refrigerant circulation system 300 is a compressor 320 is connected to the rear end of the liquid separator 310, the first condenser 230 is connected to the rear end of the compressor 320, the first end of the first condenser 230 2 condenser 330 is connected, the receiver 340 is connected to the rear end of the second condenser 330, the expansion edge 350 is connected to the rear end of the receiver 340, the rear end of the expansion valve 350 is The second internal space of the evaporation tank 120 is connected to the extension, and the second internal space is connected to the outside may be connected to the front end of the liquid separator 310.

The liquid separator 310 may separate the liquid refrigerant from the low temperature low pressure mixed refrigerant discharged through the first heat exchange (that is, the gas refrigerant and the liquid refrigerant) and discharge the low temperature low pressure gas refrigerant.

The compressor 320 may compress the low temperature low pressure gas refrigerant provided through the liquid separator 310 to discharge the high temperature high pressure gas refrigerant.

The first condenser 230 may discharge the high temperature and high pressure liquid refrigerant by performing a third heat exchange with the raw water (or cold water) on the high temperature and high pressure gas refrigerant provided through the compressor 320.

The second condenser 330 may discharge the high temperature and high pressure liquid refrigerant by recondensing the high temperature and high pressure liquid refrigerant provided through the first condenser 330.

The receiver 340 temporarily stores the high temperature and high pressure liquid refrigerant provided through the second condenser 330 and then provides the expansion refrigerant 350 to the expansion valve 350, and expands the high temperature and high pressure liquid refrigerant to the desalination unit ( A low temperature low pressure gas refrigerant may be provided to the second internal space of the evaporation tank 120 provided at 100.

The low temperature and low pressure gas refrigerant may be converted into a low temperature low pressure mixed refrigerant after being discharged to the outside after performing a third heat exchange with water vapor of the second internal space, and the low temperature low pressure mixed refrigerant may be transferred to the liquid separator 310. have.

The freshwater storage system 400 stores freshwater manufactured through the desalination unit 100, and may include a freshwater pump 410 and a freshwater tank 420.

The desalination pump 410 pumps and discharges fresh water manufactured through the desalination unit 100, and may discharge and discharge fresh water stored in the second internal space of the desalination unit 100 as necessary. Of course, a discharge control valve may be provided on the path, and this fresh water may be stored in the fresh water pump 420.

Therefore, by performing the heat exchange of hot water and seawater, heat exchange of steam and gas refrigerant of low temperature and low pressure using the configuration of a heat pump including a compressor, a condenser and an evaporator, desalination of seawater can be easily produced, and a simple configuration As it is possible to build a facility for manufacturing fresh water, there is an advantage that can be installed in various locations and equipment requiring fresh water.

Next, the first heat exchange between the hot water provided through the hot water circulation system and the sea water is performed in the tidal water device having the above-described configuration, and the second heat exchange of the low temperature and low pressure gas refrigerant provided through the refrigerant circulation system is performed. It describes the process of producing fresh water by performing.

2 is a flowchart illustrating a process of desalination of seawater using a heat pump according to another embodiment of the present invention.

Referring to FIG. 2, the seawater required for the desalination unit 100 is opened through the opening of the first supply valve 110 to the desalination unit 100 (S202), and the raw water is opened through the opening of the second supply valve 210. It is supplied to the auxiliary tank 220 (S204).

The raw water supplied from S204 is temporarily stored in the auxiliary tank 220 and then provided to the first condenser 230, and the first condenser 230 is formed of the high temperature and high pressure gas refrigerant provided through the refrigerant circulation system 300. 3 performs heat exchange (S206). Raw water may be heated through the third heat exchange to provide hot water to the circulation pump 240 connected to the rear end of the first condenser 230.

The circulation pump 240 circulates the provided hot water by pumping the seawater stored in the first internal space of the evaporation tank 120 provided in the desalination unit 100, and circulated with the seawater stored in the first internal space. A first heat exchange with hot water is performed (S208).

Through the process of S208 seawater is evaporated using the heat of hot water, water vapor may be provided (S210). Such water vapor may be provided to move only the gaseous water in which the salt is removed to the second internal space through the first separator provided in the partition portion of the first internal space and the second internal space.

Meanwhile, the compressor 320 is connected to the rear end of the liquid separator 310, the first condenser 230 is connected to the rear end of the compressor 320, and the second condenser 330 is connected to the rear end of the first condenser 230. Is connected, the receiver 340 is connected to the rear end of the second condenser 330, the expansion valve 350 is connected to the rear end of the receiver 340, the rear end of the expansion valve 350 is the evaporation tank 120 The refrigerant may be circulated while performing a phase change through the refrigerant circulation system 300 extending and connected to the second internal space of the second internal space and connected to the outside of the second separator and connected to the front end of the liquid separator 310 (S212). ).

In addition, the water vapor provided in the second internal space performs a second heat exchange with the low temperature low pressure gas refrigerant provided through the expansion valve 350 (S214). Through such a second heat exchange, the low temperature low pressure gas refrigerant may be discharged by phase change into a low temperature low pressure mixed refrigerant.

Through the process of S214 water vapor is condensed and desalted and stored in the storage space provided in the lower portion of the second internal space, it is possible to manufacture fresh water (S216).

The fresh water may be pumped through the fresh water pump 410 and stored in the fresh water tank 420 (S218).

The processes of S202 to S218 as described above are divided step by step for convenience of explanation, the hot water circulation and the circulation of the refrigerant can be continuously performed at the same time, thereby producing fresh water.

Thus, by performing a first heat exchange of the hot water and sea water provided through the hot water circulation system, and performing a second heat exchange of the low temperature and low pressure gas refrigerant provided through the refrigerant circulation system and the refrigerant circulation system to produce fresh water, It is easy to manufacture fresh water, and it is possible to build a facility for manufacturing fresh water with a simple configuration, and there is an advantage that it can be applied to various locations and equipment requiring fresh water.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

100: desalination unit 110: first supply valve
120: evaporation tank 130: first separator
140: vacuum pump 150: second separator
200: hot water circulation system 210: second supply valve
220: auxiliary tank 230: first condenser
240: circulation pump 300: refrigerant circulation system
310: liquid separator 320: compressor
330: second condenser 340: receiver
350: expansion valve 400: fresh water storage system
410: freshwater pump 420: freshwater tank

Claims (5)

A desalination unit for evaporating the seawater through a first heat exchange between the supplied seawater and hot water, and then condensing the seawater through a second heat exchange between a low temperature and low pressure gas refrigerant and steam;
A hot water circulation system configured to supply the hot water to the desalination unit through a third heat exchange between the supplied raw water and a gas refrigerant having a high temperature and high pressure, and circulate the cold water generated according to the first heat exchange to perform the third heat exchange;
When the low temperature and low pressure gas refrigerant becomes the low temperature and low pressure mixed refrigerant through the second heat exchange, the liquid refrigerant is separated and compressed to provide the high temperature and high pressure gas refrigerant for the third heat exchange, and the third heat exchange is performed. When the liquid refrigerant of the high temperature and high pressure through, the refrigerant circulation system for converting the gas refrigerant of the low temperature and low pressure for the second heat exchange to provide to the desalination unit;
Freshwater storage system for storing the freshwater produced by the desalination unit
Tide device using a heat pump comprising a.
The method of claim 1,
The desalination unit,
A first supply valve adjusted to supply the seawater to the desalination unit;
The fresh water is partitioned into a first internal space for performing the first heat exchange and a second internal space for performing the second heat exchange, and condensing the water vapor evaporated through the first heat exchange through the second heat exchange to produce the fresh water. With evaporation tank,
A first separator provided in a partition portion of the first internal space and the second internal space, the liquid phase vapor being separated from the water vapor in the first internal space to provide the water vapor in a gaseous state to the second space;
A vacuum pump for discharging internal air to maintain the second internal space in a vacuum state;
A second separator to block external discharge of the fresh water manufactured in the second internal space when the internal air is discharged
Tide device using a heat pump comprising a.
The method of claim 1,
The hot water circulation system,
A second supply valve adjusted to supply the raw water,
An auxiliary tank in which the raw water is temporarily stored;
A first condenser for heating the temporarily stored raw water through the third heat exchanger and delivering the hot water to the desalination unit;
A circulation pump for circulating by pumping the hot water to be delivered to the desalination unit
Tide device using a heat pump comprising a.
The method of claim 1,
The refrigerant circulation system
A liquid separator for separating the liquid refrigerant from the low temperature and low pressure mixed refrigerant;
A compressor for compressing the low temperature low pressure gas refrigerant provided through the liquid separator;
A first condenser for performing the third heat exchange using the high temperature and high pressure gas refrigerant provided through the compressor;
A second condenser for recondensing the high temperature and high pressure liquid refrigerant provided through the first condenser;
A receiver for temporarily storing the high temperature and high pressure liquid refrigerant provided through the second condenser;
An expansion valve for expanding the temporarily stored high temperature and high pressure liquid refrigerant to the desalination unit as a low temperature low pressure gas refrigerant
Tidal device using a heat pump comprising a.
The method according to any one of claims 1 to 4,
The freshwater storage system,
A fresh water pump for pumping and draining the fresh water manufactured through the desalination unit;
Freshwater tank for storing the freshwater discharged through the freshwater pump
Tide device using a heat pump comprising a.

Images