KR101927434B1 - Absorption refrigeration system - Google Patents

Abstract

According to the present invention, an absorption type refrigeration system separates refrigerant and an absorbent concentrated solution by using a reverse osmotic separation membrane or a membrane evaporation separation membrane to improve efficiency without an additional heat source. Moreover, a cooling fluid supplied to the reverse osmotic separation membrane is used to cool a weak solution. Therefore, an absorber needs not to be separately cooled. According to the present invention, a structure of the system is simple to be miniaturized, and can be conveniently manufactured, installed, maintained, and repaired. Moreover, a separator performs a role of an evaporator to enable a structure to be very simple and improve efficiency.

Description

Absorption refrigeration system

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an absorption type refrigerator, and more particularly, to an absorption type refrigerator which can separate a refrigerant and an absorbent concentrated solution using a separation membrane to improve efficiency.

2. Description of the Related Art Generally, an absorption type refrigerator is a system for obtaining cold heat using various heat sources. The absorption type refrigerator includes an absorber for absorbing a refrigerant by an absorbent, a regenerator for regenerating the refrigerant by heating the absorbed refrigerant, a condenser for condensing the refrigerant, And a vaporizer for evaporating the vapor.

However, in the conventional absorption refrigerator, a large amount of high-temperature heat source is required in order to separate the refrigerant and the absorbent in the regenerator, so that the efficiency is lowered.

Therefore, recently, interest and research on a hybrid absorption cooling system using solar heat as a heat source of an absorption type refrigerator are increasing.

However, the conventional hybrid absorption cooling system using solar heat has a problem in that it can not operate the absorption refrigerator because it does not receive solar heat at night or in rain or cloudy weather.

Korean Patent No. 10-0522650

It is an object of the present invention to provide an absorption type refrigerator which can further improve the efficiency.

An absorption refrigerator according to the present invention comprises: a pump for pumping a diluent solution obtained by mixing a first refrigerant and an absorbent from an absorber; A separator for separating the high-pressure spiral solution pumped by the pump into a first refrigerant and a concentrated solution of the absorbent by using a separation membrane, discharging the first refrigerant, and supplying the concentrated solution to the absorber; And an evaporator for heat-exchanging the second refrigerant with the process water to evaporate the second refrigerant to generate a second refrigerant vapor and supply the vapor to the absorber, wherein the process water is cooled to produce cooling water.

According to another aspect of the present invention, there is provided an absorption chiller comprising: a pump for pumping a diluent solution in which a refrigerant and an absorbent from an absorber are mixed; The high-pressure spiral solution pumped by the pump is separated into the refrigerant and the absorbent-rich solution by using a reverse osmosis separator, and the concentrated solution is supplied to the absorber. The refrigerant is evaporated by heat exchange with the process water supplied from the outside And then supplying it to the absorber.

An absorption refrigerator according to another aspect of the present invention includes: a pump for pumping a diluent solution in which an absorbent is mixed with a first refrigerant from an absorber; A separator for heating the high-pressure spiral solution pumped by the pump using a waste heat source, discharging the first refrigerant as a vapor, and supplying the absorbent concentrated solution to the absorber; The evaporator includes a separator channel formed to pass a second refrigerant supplied from the outside and having a reverse osmosis separator on one side thereof and a separator channel formed on the other side of the reverse osmosis separator, An evaporation channel for evaporating the second refrigerant separated from the reverse osmosis membrane by heat exchange with process water supplied from the outside; And a cooling water generating channel disposed to be in contact with the evaporation channel and configured to pass the process water to cool the process water through heat exchange with the second refrigerant to generate cooling water.

In the absorption type refrigerating machine according to the present invention, the refrigerant and the concentrated absorbent solution are separated using the reverse osmosis separation membrane or the membrane evaporation separation membrane, and the efficiency can be improved since a separate heat source is not required.

In addition, since the cooling solution can be cooled by using the cooling fluid supplied to the reverse osmosis separator, there is an advantage that it is not necessary to separately cool the absorber.

Further, the present invention is advantageous in that the structure of the system is simple and miniaturization is possible, and manufacturing, installation, and maintenance are simple.

Further, since the separator also functions as an evaporator, the efficiency can be improved while the structure is greatly simplified.

1 is a view showing an absorption refrigerator according to a first embodiment of the present invention.
2 is a view showing an absorption refrigerator according to a second embodiment of the present invention.
3 is a view showing an absorption refrigerator according to a third embodiment of the present invention.
4 is a view showing an absorption refrigerator according to a fourth embodiment of the present invention.
5 is a view showing an absorption refrigerator according to a fifth embodiment of the present invention.
6 is a view showing an absorption refrigerator according to a sixth embodiment of the present invention.
7 is a view showing an absorption refrigerator according to a seventh embodiment of the present invention.
8 is a view showing an absorption refrigerator according to an eighth embodiment of the present invention.
9 is a view showing an absorption refrigerator according to a ninth embodiment of the present invention.
10 is a view showing an absorption refrigerator according to a tenth embodiment of the present invention.
11 is a view showing an absorption refrigerator according to an eleventh embodiment of the present invention.
12 is a view showing an absorption refrigerator according to a twelfth embodiment of the present invention.
13 is a view showing an absorption refrigerator according to a thirteenth embodiment of the present invention.
14 is a view showing an absorption refrigerator according to a fourteenth embodiment of the present invention.
15 is a view showing an absorption refrigerator according to a fifteenth embodiment of the present invention.
16 is a view showing an absorption refrigerator according to a sixteenth embodiment of the present invention.
17 is a view showing an absorption refrigerator according to a seventeenth embodiment of the present invention.
18 is a view showing an absorption refrigerator according to an eighteenth embodiment of the present invention.

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

1 is a view showing an absorption refrigerator according to a first embodiment of the present invention.

1, an absorption refrigerator 10 according to a first embodiment of the present invention includes an absorber 11, a pump 12, a separator 14, and an evaporator 16. As shown in Fig.

The first refrigerant and the second refrigerant of the absorption type refrigerating machine 10 according to the first embodiment of the present invention are water, respectively. The first refrigerant and the second refrigerant are not continuously circulated in the absorption type refrigerator (10) but continuously supplied from the outside, discharged after being used again.

The absorber (11) introduces the second refrigerant vapor evaporated in the evaporator (16) and absorbs it into the refrigerant / absorber mixture. The inside of the absorber 11 is maintained in a vacuum state. The vacuum state may be set at a sub-atmospheric pressure, preferably in the range of 0.1 kPa to 7 kPa. A separate vacuum pump 11a may be provided to maintain the interior of the absorber 11 in a vacuum state.

The pump 12 pumps a low-pressure diluent mixed with the first refrigerant and the absorbent discharged from the absorber 11, and supplies the high-pressure diluent to the separator 14. [ The flushing solution may be a fluid having a hygroscopic property, for example, an aqueous solution of lithium bromide, an aqueous solution of lithium chloride, an aqueous solution of zinc chloride, ethylene glycol, propylene glycol, di-propylene glycol, Ethanol, an aqueous solution of sodium hydroxide, an aqueous solution of potassium hydroxide and the like.

The absorber 11 and the pump 12 are connected by a low pressure solution passage 12a and the pump 12 and the separator 14 are connected by a high pressure solution passage 12b.

The separator (14) separates the high-pressure concentrated solution pumped by the pump (12) into the first refrigerant and the concentrated absorbent solution using a separation membrane.

The separation membrane uses a reverse osmosis membrane (15).

The interior of the separator 14 is partitioned into the first and second spaces 14a and 14b by the reverse osmosis membrane 15.

A cooling fluid supply passage 14c and a cooling fluid discharge passage 14d are connected to the first space 14a. The high-pressure dilution solution passage 12b and the concentrated solution discharge passage 14e are connected to the second space 14b.

The cooling fluid supply passage 14c supplies the cooling fluid C for cooling the dilute solution passing through the separator 14 while receiving the first refrigerant separated from the reverse osmosis separator 15 It is the Euro.

The cooling fluid (C) is free from the concentration, and various fluids such as water, a high concentration aqueous solution, and a low concentration aqueous solution can be used.

The cooling fluid discharge passage 14d is a passage for discharging the cooling fluid containing the first refrigerant to the outside. The cooling fluid discharge passage 14d may be directly discharged to the outside, or may be discharged to a separate waste water circulating device.

The concentrated solution discharge passage 14e is a passage for supplying the absorbent concentrated solution separated from the reverse osmosis separation membrane 15 to the absorber 11. [ The concentrated absorbent solution supplied to the absorber 11 through the concentrated solution discharge passage 14e is injected into the absorber 11 through the nozzle.

The evaporator 16 heat-exchanges the second refrigerant supplied from the outside with the process water P supplied from the outside, and evaporates the second refrigerant to generate the second refrigerant vapor. The evaporator (16) receives the heat source from the process water and evaporates the second refrigerant. The inside of the evaporator 16 maintains a vacuum state. The vacuum state may be set at a sub-atmospheric pressure, preferably in the range of 0.1 kPa to 7 kPa. The second refrigerant vapor generated in the evaporator (16) is supplied to the absorber (11).

The second refrigerant is water, and water treated with purified water, a scale inhibitor, a corrosion inhibitor, and / or a surfactant may be used.

The evaporator (16) and the absorber (11) are connected to a refrigerant vapor supply passage (16a).

The evaporator 16 is connected to a second refrigerant supply passage 16b for supplying the second refrigerant from the outside.

The evaporator (16) is provided with a cooling water generating flow path (17) for absorbing the heat source of the process water (P) to cool the process water to generate cooling water.

The operation of the absorption refrigerator 10 according to the first embodiment of the present invention will now be described.

The high-pressure spouted solution pumped by the pump (12) flows into the separator (14).

In the separator (14), the first refrigerant and the absorbent may be separated through the reverse osmosis separator (15).

At this time, since the cooling fluid C is supplied to the separator 14, the cooling fluid C serves to receive the first refrigerant separated from the reverse osmosis separator 15. In addition, since the cooling fluid undergoes heat exchange with the dilution solution in the reverse osmosis separation membrane 15, the temperature of the concentrated absorbent solution from the separator 14 is lowered. Therefore, it may not be cooled separately in the absorber 11.

In addition, the evaporator 16 receives the second refrigerant from the outside. Here, the second refrigerant may use purified water from the water. At least one of a scale formation inhibitor, a corrosion inhibitor and a surfactant may be added to the second refrigerant.

Since the evaporator 16 is supplied with the new second refrigerant from the outside without using the first refrigerant discharged from the separator 14, it is possible to restrict the temperature and the component of the first refrigerant discharged from the separator 14 .

In the absorption refrigerator 10 constructed as described above, since the first refrigerant and the absorbent are separated by using the reverse osmosis separator 15, a separate heat source is not necessary, so that the energy efficiency can be improved.

2 is a view showing an absorption refrigerator according to a second embodiment of the present invention.

2, the absorption refrigerator 20 according to the second embodiment of the present invention includes an absorber cooling unit 21 provided in the absorber 11 to cool the diluent solution of the first refrigerant-absorbent, (Not shown) that controls the operation of the absorber cooling unit 21 is different from that of the first embodiment, and the rest of the configuration is similar, so that the same reference numerals are used for the similar configurations and the different configurations Will be described in detail.

The absorber cooling unit 21 is a heat exchanger for exchanging heat between the cooling water supplied from the outside and the diluting solution of the first refrigerant-absorbent.

The separator (14) is primarily cooled using the cooling fluid. When the generated heat in the absorber (11) can not be sufficiently cooled through the cooling fluid, the absorber cooling section (21) can do. That is, the absorber cooling unit 21 can be always operated or selectively operated.

The controller (not shown) may operate the absorber cooling unit 21 when the temperature of the absorbent-rich solution separated by the separator 14 is equal to or higher than a predetermined set temperature. That is, the control unit (not shown) can control the operation of the absorber cooling unit 21 by interrupting the inflow of the cooling water supplied to the absorber cooling unit 21.

Accordingly, the absorption heat generated in the absorber 11 can be dissipated through the first and second cooling steps.

3 is a view illustrating an absorption refrigerator according to a third embodiment of the present invention.

3, the absorption refrigerator 30 according to the third embodiment of the present invention is different from the first embodiment in that it includes the water purification module 32 and the other components are similar, Are denoted by the same reference numerals and will be described in detail with reference to different configurations.

The water treatment module 32 treats water supplied from the outside and supplies purified water to the evaporator 16 as the second refrigerant.

The water treatment module 32 may be a seawater desalination facility, a water purification filter facility, or the like. The filter used in the water purification filter may be a carbon filter, a sediment filter, an ultra filter, a reverse osmosis membrane filter, or the like.

The water treatment module 32 includes an external supply passage 32a for receiving water from the outside, a purified water supply passage 32b for supplying the purified water to the evaporator 16, And a water discharge flow path 32c for discharging the treated water and the remaining water to the outside is connected.

In the present embodiment, the second refrigerant supplied to the evaporator 16 is all supplied from the water purification module 32. However, the present invention is not limited to this, and the second refrigerant supplied to the evaporator 16 may be, Can be supplied from the water purification module 32 only.

4 is a view illustrating an absorption refrigerator according to a fourth embodiment of the present invention.

4, the absorption type refrigerator 40 according to the fourth embodiment of the present invention is configured such that the purified water that has been purified by the water purification processing module 32 and is discharged to the cooling fluid of the separator 14 Since the flow path 42 is different from the above third embodiment and the rest of the configuration is similar to each other, the same reference numerals are used for similar configurations and different configurations are mainly described.

The water discharge flow path 42 is a flow path for connecting the water treatment module 32 and the separator 14. The water discharge flow path 42 supplies at least a part of water discharged from the water treatment module 32 to the cooling fluid of the separator 14. [

Therefore, there is an advantage that the water discharge from the water treatment module 32 can be utilized. In addition, the separator 14 is advantageous in that it does not need to receive cooling fluid from the outside.

In the third embodiment of the present invention, the water-withdrawing portion discharged from the water treatment module 32 is supplied to the separator 14. However, the present invention is not limited to this, Do.

5 is a view illustrating an absorption refrigerator according to a fifth embodiment of the present invention.

5, an absorption refrigerator 50 according to a fifth embodiment of the present invention includes an absorber 11, a pump 12, a separator 54, and an evaporator 16, (Membrane Distillation) separation membrane 55 is different from that of the first embodiment, and the remaining components are similar to each other. Therefore, similar components will be denoted by the same reference numerals and different components will be described in detail.

The separator 54 includes a separator channel 56, a condensation channel 57, and a cooling channel 58. The separator 54 has a structure in which the separation membrane channel 56, the membrane evaporation separation membrane 55, the condensation channel 57 and the cooling channel 58 are laminated in order.

The membrane channel 56 is formed to pass the high-pressure diluent channel 12b, and the membrane vapor separation membrane 55 is provided on one side. In the first refrigerant-absorbent core solution flowing into the separation membrane channel 56, only the first refrigerant vapor exits the membrane vapor separation membrane 55 and then flows into the condensation channel 57.

A concentrated solution supply channel 56a for supplying the concentrated solution of the absorbent separated from the separation membrane channel 56 to the absorber 11 is connected to the separation membrane channel 56.

The condensing channel 57 forms a condensation space for condensing the first refrigerant vapor by exchanging the first refrigerant vapor exiting the membrane vapor separation membrane 55 with the cooling fluid C. [ A condensate discharge passage 57a for discharging the condensed water to the outside is connected to the lower portion of the condensation channel 57. [

The cooling channel 58 is disposed in contact with the condensing channel 57 so that the cooling fluid C passes therethrough. Between the cooling channel (58) and the condensing channel (57), the first refrigerant vapor is condensed and condensed water flows down.

The operation of the absorption type refrigerating machine 50 according to the fifth embodiment of the present invention will now be described.

The high-pressure spouted solution pumped by the pump 12 flows into the separator 54.

When the high-pressure spiral solution flows into the separation membrane channel (56), the first refrigerant vapor may escape through the membrane vapor separation membrane (55) and be separated. Here, the membrane evaporation membrane is a hydrophobic porous membrane, and utilizes membrane evaporation principle in which only water vapor is selectively passed through the membrane using the difference in partial pressure of water vapor on both sides of the membrane. The membrane evaporation membrane 55 used in the membrane evaporation method is not wetted with the solution to be treated by treating the outermost portion of the separation membrane with a hydrophobic surface and can selectively remove water vapor by the difference in partial pressure of steam between both ends of the separation membrane, It is possible to separate water vapor of higher purity at a relatively lower pressure than that of the conventional method. The membrane evaporation method exposes the separated water vapor to a heat source lower than the saturation temperature, and finally the condensed water can be separated and recovered.

The first refrigerant vapor separated from the membrane vapor separation membrane (55) condenses in the condensation channel (57).

The condensed water condensed in the condensing channel (57) is discharged to the outside through the condensed water discharge passage (57a).

The absorption refrigerating machine 50 having the above-described structure separates water and the absorbent, which are the first refrigerant, by using the membrane vapor separation membrane 55, thereby eliminating the need for a separate heat source for water- .

6 is a view illustrating an absorption refrigerator according to a sixth embodiment of the present invention.

6, the absorption refrigerator 60 according to the sixth embodiment of the present invention uses a membrane evaporation membrane 55 as the separator 54, It is preferable that the supply of the condensed water from the condensation channel 57 as the second refrigerant of the evaporator 16 includes a channel 56, a condensation channel 57 and a cooling channel 58, And the other components are similar to each other. Therefore, the same reference numerals will be used for similar components and different components will be described in detail.

That is, the absorption type refrigerator 60 connects the condensing channel 57 and the evaporator 16 to supply the condensed water from the condensing channel 57 as the second refrigerant of the evaporator 16 And a flow path 61.

The condensed water supply passage 61 is provided with a condensate pump 62 for pumping the condensed water.

Therefore, there is an advantage that the condensed water separated and separated from the separator 54 can be recycled again.

7 is a view illustrating an absorption refrigerator according to a seventh embodiment of the present invention.

7 shows the absorption refrigerator 70 according to the seventh embodiment of the present invention in that the separator 54 uses the membrane vapor separation membrane 55 and the purification treatment module 72 includes the water treatment module 72, And the other components are similar to each other. Therefore, the same reference numerals will be used for similar components and different components will be described in detail.

The water treatment module 72 treats water supplied from the outside and supplies purified water to the evaporator 16 as the second refrigerant.

The water treatment module 72 may be a seawater desalination facility, a water purification filter facility, or the like. The filter used in the water purification filter may be a carbon filter, a sediment filter, an ultra filter, a reverse osmosis membrane filter, or the like.

The water treatment module 72 includes an external supply passage 72a for receiving water from the outside, a purified water supply passage 72b for supplying the purified water to the evaporator 16, And a water discharge discharge passage 72c for discharging the remaining water that has been processed and connected.

The water discharge flow path 72c supplies at least a part of the water discharged from the water treatment module 72 to the cooling fluid C of the separator 54.

In the seventh embodiment of the present invention, the water withdrawn from the water treatment module 72 is supplied to the separator 54. However, the present invention is not limited to this, It is of course possible to discharge it to the outside.

The second refrigerant supplied to the evaporator 16 may be supplied from the water treatment module 72 to the evaporator 16. However, the present invention is not limited to this, and only a part of the second refrigerant supplied to the evaporator 16 And can be supplied from the water purification module 72.

8 is a view illustrating an absorption refrigerator according to an eighth embodiment of the present invention.

8, the absorption refrigerator 80 according to the eighth embodiment of the present invention is characterized in that the separator 54 uses a membrane evaporation membrane 55 and at least part of the condensed water from the separator 54 Since the condenser water supply passage 82 for supplying the condensed water to the evaporator 16 is provided, and the other components are similar to each other, the same reference numerals are used for similar components, and detailed description do.

The condensed water supply passage 82 is branched from the condensed water discharge passage 57a and connected to the purified water supply passage 72b. However, the present invention is not limited to this, and the condensed water supply passage 82 may be directly connected to the evaporator 16.

The condensate water supply passage 82 is provided with a condensate pump 84 for pumping the condensed water.

The condensate discharge passage (57a) is provided with a condensate discharge valve (86) for controlling the flow rate of the condensed water discharged to the outside. That is, the opening of the condensed water discharge valve 86 can be controlled according to the flow rate of the condensed water required by the evaporator 16, and the flow rate of the condensed water discharged to the outside can be controlled.

The flow rate of the purified water supplied through the purified water supply passage 72b can be controlled according to the flow rate of the condensed water supplied from the condensed water supply passage 82.

9 is a view illustrating an absorption refrigerator according to a ninth embodiment of the present invention.

9, the absorption refrigerator 90 according to the ninth embodiment of the present invention is characterized in that the separator 54 uses a membrane vapor separation membrane 55 and includes a purification treatment module 92, It is preferable that the processing module 92 supplies purified water to the cooling channel 58 of the separator 54 and circulates the cooling fluid passing through the cooling channel 58 to the evaporator 16, Since the rest of the configuration is different from that of the embodiment, the same reference numerals are used for similar configurations and different configurations will be described in detail.

That is, the water treatment module 92 includes an external supply passage 92a for receiving water from the outside, a purified water supply passage 92b for supplying the purified water to the separator 54, And a water discharge discharge passage 92c for discharging the remaining water that has been subjected to the water treatment.

The purified water supply passage 92b connects the water treatment module 92 and the cooling channel 58 to supply purified water processed by the water treatment module 92 to the cooling fluid.

The cooling channel 58 and the evaporator 16 are connected to the evaporator supply passage 94 so that the cooling fluid passing through the cooling channel 58 is supplied to the evaporator 16. Since the cooling fluid passes through the cooling channel 58 and is heat-exchanged to absorb heat, the cooling fluid can be supplied to the evaporator 16 to supply the heat source necessary for the evaporator 16.

In the present embodiment, all of the constants processed by the water purification processing module 92 are supplied to the cooling channel 58. However, it is also possible to supply only a part of the constants. That is, the cooling channel 58 may be partially supplied from the outside and the rest may be supplied from the water purification processing module 92. It is also possible that some of the purified water processed in the water treatment module 92 is supplied to the separator 54 and the rest is supplied to the evaporator 16.

10 is a view illustrating an absorption refrigerator according to a tenth embodiment of the present invention.

10, the absorption refrigerator 100 according to the tenth embodiment of the present invention is characterized in that the separator 54 uses a membrane evaporation separation membrane 55, And a waste heat supply heat exchanger 102 for supplying external waste heat to the waste solution of the waste heat supply heat exchanger 102. Since the remaining components are similar to each other in the fifth embodiment, the same reference numerals are used for similar components, Will be described in detail.

The high-pressure dilution solution flow path 12b passes through one side of the waste heat supply heat exchanger 102 and the waste heat supply flow path 103 through which the waste heat medium is supplied to the other side.

However, the present invention is not limited to this, and it is also possible that an electric heater is used as the waste heat supply heat exchanger 102.

The temperature of the dilution solution supplied to the separator 54 can be raised by the waste heat supply heat exchanger 102.

The higher the temperature of the diluting solution supplied to the separator 54, the more the permeability of the first refrigerant vapor in the membrane vapor separation membrane 55 can be improved.

11 is a view illustrating an absorption refrigerator according to an eleventh embodiment of the present invention.

11, the absorption refrigerator 110 according to the eleventh embodiment of the present invention is characterized in that the separator 54 uses a membrane evaporation separation membrane 55, A waste heat supply heat exchanger 102 for supplying waste heat to the waste solution heat exchanger 102 and a waste heat supply heat exchanger 102 for supplying external waste heat to the waste solution before the waste water is introduced into the waste heat supply heat exchanger 102 And a recuperator 114. Since the remaining components are similar to each other in the fifth embodiment, the same reference numerals are used for similar components and different components are mainly described.

The heat exchanger 114 is provided between the high-pressure dilution solution channel 12b and the concentrated solution supply channel 56a and is connected to the dilution solution before entering the separator 54, The absorbent concentrate solution is heat exchanged.

Accordingly, since the high-pressure spiral solution pumped by the pump 12 is firstly preheated while passing through the heat exchanger 114, and then is heated secondarily through the waste heat supply heat exchanger 102, The temperature of the dilution solution flowing into the supernatant 54 can be further increased.

The higher the temperature of the diluting solution supplied to the separator 54, the more the permeability of the first refrigerant vapor in the membrane vapor separation membrane 55 can be improved.

12 is a view showing an absorption refrigerator according to a twelfth embodiment of the present invention.

12, an absorption refrigerator 120 according to a twelfth embodiment of the present invention includes an absorber 121, a pump 122, and a separator 124, which are separated from each other by a separator The first embodiment differs from the first embodiment in that a refrigerant-absorbing agent is separated from a refrigerant and an evaporator for evaporating a refrigerant.

The separator 124 includes a separation membrane channel 126 having a reverse osmosis membrane 125, an evaporation channel 127 and a cooling water production channel 128. The separator 124 may be formed by stacking the separator channel 126, the reverse osmosis separator 125, the evaporation channel 127, the separator panel 129, Structure. However, the present invention is not limited to this, and the separator 124 may be formed in a spiral structure.

The separator channel 126 is formed to pass the high-pressure diluent channel 12b and the reverse osmosis separator 125 is provided on one side.

The absorber concentrated solution separated in the separation membrane channel 126 is supplied to the absorber 121 through the concentrated solution supply flow path 126a.

The evaporation channel 127 forms a space in which the refrigerant separated from the reverse osmosis separator 125 is heat-exchanged with the process water P passing through the cooling water production channel 128 to evaporate the refrigerant vapor.

The inside of the evaporation channel 127 maintains a vacuum state. The vacuum state is below the atmospheric pressure, and may preferably be set in the range of 0.1 kPa to 7 kPa.

The refrigerant vapor generated in the evaporation channel 127 is supplied to the absorber 121 through the refrigerant vapor supply passage 127a.

The separation panel 129 is installed between the evaporation channel 127 and the cooling water production channel 128. The separation panel 129 is a panel formed of a polymer or a metal material.

After the process water P is supplied through one side of the cooling water producing channel 128, cooling water is generated by heat exchange in the inside, and the generated cooling water is discharged through the other side.

The operation of the absorption refrigerator 120 constructed as above will be described below.

The high-pressure spouted solution pumped by the pump 122 flows into the separator 124.

The high-pressure spiral solution introduced into the separator 124 can be separated into the refrigerant and the absorbent through the reverse osmosis separator 125.

The absorber concentrated solution separated in the separation membrane channel 126 is supplied to the absorber 121.

The refrigerant separated from the separation membrane channel 126 flows into the evaporation channel 127 and is evaporated.

The refrigerant vapor evaporated in the evaporation channel (127) is supplied to the absorber (121).

The cooling water cooled in the cooling water producing channel 128 can be supplied to a customer.

The absorption refrigerator 120 according to the twelfth embodiment of the present invention configured as described above may serve not only to separate the refrigerant and the absorbent from the separator 124, but also to serve as an evaporator for generating the refrigerant vapor. Therefore, the structure is simple, and a separate heat source is not required, so that the efficiency can be improved.

13 is a view illustrating an absorption refrigerator according to a thirteenth embodiment of the present invention.

13, an absorption type refrigerator 130 according to a thirteenth embodiment of the present invention includes an absorber cooling unit 131 provided in the absorber 121 to cool a diluting solution of the refrigerant-absorbent, (Not shown) for controlling the operation of the cooling unit 131 is different from that of the twelfth embodiment, and the remaining components are similar, so that the same reference numerals are used for the similar components, Will be described in detail.

The absorber cooling unit 131 is a heat exchanger for exchanging heat between the cooling water supplied from outside and the dilute solution of the refrigerant-absorbent.

If the amount of heat generated in the absorber 121 can not be sufficiently cooled by the separator 124, the absorber cooling unit 131 may be used for secondary cooling.

The controller (not shown) may operate the absorber cooling unit 131 when the temperature of the absorbent separated from the separator 124 is equal to or higher than a predetermined set temperature. That is, the control unit (not shown) can control the operation of the absorber cooling unit 131 by interrupting the inflow of the cooling water supplied to the absorber cooling unit 131.

Therefore, the absorption heat generated in the absorber 121 can be dissipated through the first and second cooling.

14 is a view illustrating an absorption refrigerator according to a fourteenth embodiment of the present invention.

14, the absorption refrigerator 140 according to the fourteenth embodiment of the present invention is different from the twelfth embodiment in that the accumulator 142 is provided between the evaporation channel 127 and the absorber 121, And the other components are similar to each other. Therefore, the same reference numerals will be used for similar components and different components will be described in detail.

Since the refrigerant vapor from the evaporation channel 127 includes a gas phase and a liquid phase, only the gaseous refrigerant vapor from the accumulator 142 can be supplied to the absorber 121 after being supplied to the accumulator 142.

The evaporation channel 127 and the accumulator 142 are connected to a first flow path 142a for guiding the refrigerant vapor including the gas phase and the liquid phase to the accumulator 142. [

The accumulator 142 and the absorber 121 are connected to a second flow path 142b for guiding the gaseous refrigerant vapor to the absorber path 121.

15 is a view illustrating an absorption refrigerator according to a fifteenth embodiment of the present invention.

15, an absorption refrigerator 150 according to a fifteenth embodiment of the present invention includes a sweep gas supply passage 151 for supplying a sweep gas from the absorber 121 to the evaporation channel 127 And the blower 152 provided in the sweep gas supply passage 151 are different from those of the twelfth embodiment and the rest of the configuration is similar, so that the same reference numerals are used for the similar configurations, Will be described in detail.

The evaporation channel (127) is vacuum, and the volume expansion due to the evaporation of water causes the mass transfer to be substantially smooth. However, in the microchannel structure having a minute flow channel, some channel clogging may occur due to strong adhesion between the droplet and the flow channel There is a concern. Thus, in order to avoid the risk of degradation of mass transfer, the sweep gas is supplied to the evaporation channel 127 for constant or intermittent blowing during operation of the apparatus, It is possible to smoothly transfer the mass of the material. Recirculation of the sweep gas within the absorber 121, particularly with a lower water vapor partial pressure, can promote droplet evaporation in the evaporation channel 127.

16 is a view illustrating an absorption refrigerator according to a sixteenth embodiment of the present invention.

Referring to FIG. 16, the absorption refrigerator 160 according to the sixteenth embodiment of the present invention differs from the fourteenth embodiment in that the water purification module 162 includes the water purification module 162, Are denoted by the same reference numerals and will be described in detail with reference to different configurations.

The water treatment module 162 treats water supplied from outside and supplies purified water to the evaporation channel 127.

The water treatment module 162 includes an external supply passage 162a for receiving water from the outside, a purified water supply passage 162b for supplying the purified water to the evaporation channel 127, And a water discharge discharge passage 162c for discharging the remaining water that has been purified and treated to the outside is connected.

The purified water supply passage 162b is provided with a purified water supply valve 164 for interrupting the supply of purified water.

The accumulator 142 is connected to a refrigerant liquid discharge passage 144 for discharging the refrigerant liquid to the outside when the internal water level exceeds a set water level. The refrigerant liquid discharge passage 144 is provided with a refrigerant liquid discharge valve 146.

The amount of purified water supplied from the water treatment module 162 may be controlled according to the level of the accumulator 142 or the level of the absorber 121.

17 is a view illustrating an absorption refrigerator according to a seventeenth embodiment of the present invention.

17, the absorption type refrigerator 170 according to the seventeenth embodiment of the present invention is characterized in that the fact that water is subjected to purification treatment in the water treatment module 162 and the remaining water is used to cool the absorber 121, 16, and the rest of the configuration is similar to each other. Therefore, the same reference numerals are used for similar configurations, and different configurations are mainly described.

That is, the water discharge flow path 162c for discharging the remaining water purified by the water treatment module 162 is connected to the absorber cooling flow path 172 provided in the absorber 121.

Therefore, since the water that has been purified and treated in the water treatment module 162 is discharged to the outside after being used to cool the absorber 121, utilization efficiency can be improved.

In the present embodiment, the water is completely used to cool the absorber 121. However, the present invention is not limited to this, but a part of the absorber 121 may be directly discharged to the outside, Can be used. Also, it is of course possible to adjust the amount of water to be supplied to the absorber 121.

18 is a view illustrating an absorption refrigerator according to an eighteenth embodiment of the present invention.

18, an absorption refrigerator 180 according to an eighteenth embodiment of the present invention includes an absorber 181, a pump 182, a separator 184 and an evaporator 190, and the separator 184, The evaporator 190 includes a separation membrane channel 191, a reverse osmosis separation membrane 192, an evaporation channel 193, a separator panel 194, And the cooling water producing channels 195 are stacked in this order from the first embodiment.

The separator 184 heats the high-pressure concentrated solution pumped by the pump 182 using the waste heat source. The first refrigerant heated in the separator 184 evaporates and is discharged as steam, and the concentrated absorbent solution is supplied to the absorber 181.

The separator 184 passes through the waste heat supply passage 185 to which the waste heat source is supplied. An outlet 184a through which the steam is discharged is formed in the upper portion of the separator 184.

The separator 184 and the absorber 181 are connected to a concentrated solution supply passage 186. A concentrated solution supply valve 187 is provided in the concentrated solution supply passage 186.

The evaporator 190 has a structure in which a separation membrane channel 191, a reverse osmosis separation membrane 192, an evaporation channel 193, a separator panel 194 and the cooling water production channel 195 are stacked in order . However, the present invention is not limited to this, and the evaporator 190 may be formed in a spiral structure.

The separator channel 191 is formed to pass a second refrigerant supply passage 191a for supplying a second refrigerant from the outside and the reverse osmosis separator 192 is provided on one side. The second refrigerant may use a relatively low concentration waste process water used in an industrial field.

The reverse osmosis membrane (192) can be used as the second refrigerant by purifying the waste process water.

The evaporation channel 193 forms a space in which purified water passes through the reverse osmosis separator 192 and is heat-exchanged with the process water P passing through the cooling water generating channel 195 to evaporate into refrigerant vapor. Here, the refrigerant vapor is a droplet containing a part of water vapor and is in a two-phase state at a level of 0.1 to 0.3.

The inside of the evaporation channel 193 maintains a vacuum state. The vacuum state is below the atmospheric pressure, and may preferably be set in the range of 0.1 kPa to 7 kPa.

The refrigerant vapor generated in the evaporation channel 193 is supplied to the absorber 181 through the refrigerant vapor supply passage 193a.

The separation panel 194 is installed between the evaporation channel 193 and the cooling water production channel 195. The separation panel 194 is a panel formed of a polymer or a metal material.

The cooling water producing channel 195 is formed such that after the process water P is supplied through one side, heat is exchanged in the inside to generate cooling water, and the generated cooling water is discharged through the other side.

The operation of the absorption refrigerator 180 constructed as above will be described below.

The high-pressure spouted solution pumped by the pump 182 flows into the separator 184.

The high-pressure spiral solution introduced into the separator 184 can be separated into the refrigerant and the absorbent through heat exchange with the waste heat source.

The absorber concentrated solution separated in the separator 184 is supplied to the absorber 181.

The refrigerant vapor evaporated in the separator 184 is discharged to the outside.

Meanwhile, the closed refrigerant, which is the second refrigerant introduced into the separator channel 191 of the evaporator 190, is purified while passing through the reverse osmosis separator 192, and is introduced into the evaporation channel 193 and evaporated .

The refrigerant vapor evaporated in the evaporation channel (193) is supplied to the absorber (181).

The cooling water cooled in the cooling water producing channel 195 can be supplied to a customer.

However, the present invention is not limited thereto. The absorption type refrigerator 180 may further include a water treatment module (not shown) that treats water supplied from the outside and supplies purified water to the evaporation channel 193.

In this embodiment, the waste process water is purified through the reverse osmosis separation membrane (192), and the waste process water can be utilized as the refrigerant vapor in the absorber (181). Finally, the waste water is distilled using the waste heat in the separator 184 and discharged as steam. Therefore, the waste process water can be purified in one system and the absorption type refrigeration cycle can be configured, so that energy saving is possible and environment-friendly effect can be obtained. Further, since the condenser is not required compared with the conventional absorption refrigerator, the structure can be simplified.

Meanwhile, the absorption type refrigerator 180 may be used to cool the absorber 181 by performing water purification treatment in the water treatment module (not shown) and remaining water.

A sweep gas supply passage (not shown) for supplying a sweep gas from the absorber 181 to the evaporation channel 193 and a blower (not shown) provided in the sweep gas supply passage (not shown) It is of course possible to further include.

Further, an accumulator (not shown) may be provided between the evaporation channel 193 and the absorber 181.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

11, 121 absorber 12, 122 pump
14, 54: Separator 15: Reverse osmosis membrane
16: evaporator 21: absorber cooling section
32, 72, 92: water treatment module 55: membrane evaporating membrane
56: Membrane channel 57: Condensate channel
58: evaporation channel 102: waste heat supply heat exchanger
114: Recuperator 124: Separator
125: Reverse Osmosis Membrane 126: Membrane Channel
127: evaporation channel 128: cooling water generation channel
129: separation panel 151: sweep gas supply passage
184: Separator 190: Evaporator
191: Membrane channel 192: Reverse osmosis membrane
193: Evaporation channel 194: Separation panel
195: Cooling water generating channel

Claims (20)

A pump for pumping the diluent solution in which the first refrigerant and the absorbent from the absorber are mixed;
A separator for separating the high-pressure spiral solution pumped by the pump into a first refrigerant and a concentrated solution of the absorbent by using a separation membrane, discharging the first refrigerant, and supplying the concentrated solution of the absorbent to the absorber;
And an evaporator for exchanging heat with the second refrigerant and the process water to evaporate the second refrigerant to generate a second refrigerant vapor and supply the vapor to the absorber,
Wherein the separation membrane is a reverse osmosis separation membrane,
A cooling fluid supply channel for supplying a cooling fluid to one side of the reverse osmosis separation membrane and cooling the dilution solution through heat exchange between the cooling fluid and the dilution solution,
Further comprising a cooling fluid discharging passage for discharging the cooling fluid containing the first refrigerant separated from the reverse osmosis separator to the outside,
The second refrigerant is water,
A water purification module for purifying the water,
And a purified water supply flow path for supplying purified water processed by the water purification processing module to the evaporator. A pump for pumping the diluent solution in which the first refrigerant and the absorbent from the absorber are mixed;
A separator for separating the high-pressure spiral solution pumped by the pump into a first refrigerant and a concentrated solution of the absorbent by using a separation membrane, discharging the first refrigerant, and supplying the concentrated solution of the absorbent to the absorber;
And an evaporator for exchanging heat with the second refrigerant and the process water to evaporate the second refrigerant to generate a second refrigerant vapor and supply the vapor to the absorber,
The separation membrane is a Membrane Distillation (MD) separation membrane,
Wherein the separator comprises:
A membrane channel provided with the membrane evaporation membrane and configured to pass a high pressure dilution channel for guiding high-pressure dilution solution pumped by the pump to the separator, the membrane channel separating the first refrigerant vapor from the membrane evaporation membrane;
A condensing channel for condensing the first refrigerant vapor by heat-exchanging the first refrigerant vapor exiting the membrane vapor separation membrane with a cooling fluid supplied from the outside,
And a cooling channel disposed to abut the condensing channel and configured to allow the cooling fluid to pass therethrough. The method according to claim 1,
An absorber cooling unit provided in the absorber and cooling the supernatant,
Further comprising a control unit for operating the absorber cooling unit when the temperature of the absorbent separated from the separator is equal to or higher than a predetermined set temperature. delete The method according to claim 1,
Wherein the cooling fluid supply passage
And connects the water purification module and the separator to supply water discharged from the water purification processing module to the cooling fluid. delete The method of claim 2,
And a condensed water supply passage connecting the condensation channel and the evaporator to supply condensed water condensed in the condensation channel to the second refrigerant. The method of claim 2,
The second refrigerant is water,
A water purification module for purifying the water,
Further comprising a purified water supply passage connecting the water treatment module and the evaporator to supply purified water processed by the water treatment module to the evaporator. The method of claim 8,
And a water supply and supply passage connecting the water purification module and the cooling channel to supply at least a part of water discharged from the water purification module to the cooling fluid. The method of claim 2,
A water purification module for purifying water supplied from outside,
A purified water supply flow path connecting the water treatment module and the evaporator to supply purified water processed by the water treatment module to the evaporator,
And a condensing water supply passage connecting the condensing channel and the evaporator to supply at least a portion of the condensed water condensed in the condensing channel to the evaporator. The method of claim 2,
A water purification module for purifying water supplied from outside,
A purified water supply channel connecting the water purification module and the cooling fluid supply unit to supply at least a part of purified water processed in the water purification module to the cooling fluid,
And a condensing water supply passage connecting the condensing channel and the evaporator to supply at least a portion of the condensed water condensed in the condensing channel to the evaporator. The method of claim 2,
And a waste heat supply heat exchanger installed in the high-pressure solution flow passage for supplying external heat to the rare-earth solution. The method of claim 12,
An absorber supply flow path connecting the separator and the absorber to supply the absorber concentrated solution separated from the separator to the absorber,
Further comprising a recuperator provided between the high-pressure diluent passage and the absorber feed passage for exchanging heat between the diluent coming from the absorber and the concentrated absorbent solution from the separator. A pump for pumping the diluted solution in which the refrigerant and the absorbent discharged from the absorber are mixed;
The high-pressure spiral solution pumped by the pump is separated into the refrigerant and the absorbent-rich solution by using a reverse osmosis separator, and the absorbent-rich solution is supplied to the absorber. The refrigerant is evaporated by heat exchange with process water supplied from the outside And a separator for supplying the adsorbent to the absorber,
Wherein the separator comprises:
A reverse osmosis membrane having a reverse osmosis membrane, a high-pressure water solution channel for guiding a high-pressure spiral solution pumped by the pump to the separator, a separator channel for separating the refrigerant from the reverse osmosis membrane,
An evaporation channel for evaporating the refrigerant separated from the reverse osmosis membrane by heat exchange with the process water,
And a cooling water producing channel which is arranged to be in contact with the evaporation channel and is formed so that the process water is passed therethrough to cool the process water through heat exchange with the refrigerant to generate cooling water. delete A pump for pumping the diluent solution in which the first refrigerant and the absorbent from the absorber are mixed;
The high-pressure spiral solution pumped by the pump is heated using a waste heat source to separate the first refrigerant and the absorbent-rich solution into a vapor. The absorbent-rich solution is supplied to the separator Wow;
And an evaporator for supplying steam to the absorber,
Wherein the evaporator comprises:
A separator channel formed to pass a second refrigerant supplied from the outside and having a reverse osmosis separator on one side thereof,
An evaporation channel formed on the other side of the reverse osmosis membrane to evaporate the second refrigerant separated from the reverse osmosis membrane by heat exchange with process water supplied from the outside;
And a cooling water producing channel disposed in contact with the evaporation channel and configured to pass the process water to cool the process water through heat exchange with the second refrigerant to generate cooling water. The method according to claim 14 or 16,
And an accumulator disposed between the evaporation channel and the absorber. The method according to claim 14 or 16,
A sweep gas supply passage for supplying a sweep gas from the absorber to the evaporation channel,
And a blower provided in the sweep gas supply passage. The method according to claim 14 or 16,
Further comprising a water treatment module for treating the water supplied from the outside and supplying the treated water to the evaporation channel. The method of claim 19,
Further comprising a water supply flow path for connecting the water treatment module and the absorber to supply at least a part of the water withdrawn from the water treatment module to the absorber to cool the absorber.

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