KR102280099B1 - Absorption type chiller using composite heat source - Google Patents

Abstract

The present invention relates to an absorption-type chiller using a complex heat source and comprises: a first shell including a first regenerator in which a dilute solution passing through a dilute solution line is heat-exchanged with hot water passing through a hot water line to be converted into an intermediate solution, an auxiliary regenerator in which an auxiliary dilute solution passing through an auxiliary dilute solution line is heat-exchanged with the hot water passing through the hot water line to be converted into an auxiliary concentrated solution, and a condenser in which refrigerant vapor generated from the first regenerator and the auxiliary regenerator is heat-exchanged with a refrigerant passing through a cooling water line to be condensed; a second shell including an evaporator in which cold water passing through a cold water line is cooled by the heat of vaporization of the refrigerant passing through a refrigerant line and an absorber in which the refrigerant vapor generated in the evaporator and a concentrated solution passing through a concentrated solution line are mixed and converted into a dilute solution; a third shell including a second regenerator in which the intermediate solution converted in the first regenerator is heat-exchanged with the hot water passing through the hot water line to be converted into a concentrated solution and an auxiliary absorber in which the refrigerant vapor generated in the second regenerator and the auxiliary concentrated solution passing through an auxiliary concentrated solution line are mixed and converted into an auxiliary dilute solution; and a vapor line disposed in the first regenerator of the first shell and through which vapor passes to convert the dilute solution to the concentrated solution by being heat-exchanged with the dilute solution passing through the dilute solution line, wherein the passing vapor is converted into a liquid by heat exchange with the dilute solution. Accordingly, energy efficiency is maximized.

Description

Absorption type chiller using composite heat source

The present invention relates to an absorption refrigerator using a complex heat source, and more particularly, to an absorption refrigerator using both hot water and steam (steam) as waste heat.

In general, an absorption chiller is known as one of the cooling means using the heat of vaporization of a refrigerant.

The absorption chiller vaporizes the refrigerant in an airtight container (evaporator) close to vacuum, and the generated heat of vaporization exchanges heat with the heat transfer tube inside the evaporator to generate cold water.

Unlike vapor-compression refrigerators, these absorption refrigerators use an absorbent to recover (absorb) and regenerate the refrigerant. The refrigerant/absorbent is H ₂ O/LiBr and NH ₃ /H ₂ O methods. _{The H 2} O/LiBr method using water (H ₂ O) and an aqueous lithium bromide solution (LiBr) as an absorbent is more widely used.

In addition, absorption chillers are divided into single-effect (single-effect), double-effect, triple-effect, or more multi-effect according to the regenerator. , the conventionally generally used method is a single-effect or double-effect absorption refrigerator.

A single-effect absorption refrigerator is composed of a regenerator, a condenser, an evaporator and an absorber. In the evaporator, the refrigerant is vaporized and phase-changed into refrigerant vapor, and in this process, cold water is generated using the vaporization heat of the refrigerant. At this time, the refrigerant vapor generated in the evaporator moves to the absorber and is absorbed by the absorbent liquid.

The evaporator and the absorber are arranged inside the same shell and divided by an eliminator in which a steel plate, etc. is bent, so that the refrigerant vapor is absorbed and the diluted absorbent liquid (dilute solution) is heated by a heat source in the regenerator and separated from the refrigerant vapor. Then, the refrigerant vapor is condensed in the condenser, and then the cycle is repeated again into the evaporator.

In addition, the double-effect absorption chiller is divided into a high-temperature regenerator and a low-temperature regenerator, and the refrigerant vapor is separated by heating the absorbent in the high-temperature regenerator, and the refrigerant vapor is condensed in the low-temperature regenerator once again by using the heat released. It is configured to heat the absorbent liquid and generate refrigerant vapor.

This double-effect absorption chiller has advantages such as reduced load on the condenser compared to single-effect and excellent coefficient of performance, but a separate boiler for generating steam is required, so it is mainly used in large capacity.

On the other hand, as another classification method of absorption chillers, one-stage, two-stage, or multi-stage absorption chillers are known. It is an absorption chiller.

In a two-stage absorption refrigerator, the main cycle and the auxiliary cycle are separated so that the absorption liquid is circulated to the main cycle and the auxiliary cycle, respectively. Accordingly, it is effective in improving energy efficiency by stopping some cycles (sub-cycle) when the cooling load is low. .

Recently, absorption chillers have been used as a summer cooling means using district heating hot water as a heat source. This method can be used quite effectively in residential and commercial areas using district heating by utilizing the existing hot water pipe network for district heating.

In particular, for absorption chillers using district heating hot water, low- or medium-temperature water absorption chillers are mainly used.

Here, the low-temperature water absorption chiller receives hot water at around 90 degrees and discharges low-temperature water at around 50 degrees, and the medium-temperature water absorption chiller receives hot water at around 90 degrees and discharges medium hot water around 80 degrees. designed to do

At this time, the absorption chiller generates cold water by using such a heat source of hot water, and the inlet/outlet temperature of the cold water is generally set to 13 degrees / 8 degrees or 12 degrees / 7 degrees.

However, since the conventional absorption chiller uses only hot water as a heat source, there is a disadvantage that steam (steam) generated from a district heating power generation facility cannot be utilized.

That is, the district heating power generation facility generates a large amount of steam according to its operation, and the steam generated in this way is discharged to the outside or is condensed into liquid (water) by providing a separate condensing facility and then drained or recycled. the current situation.

In the case of discharging the generated steam to the outside, there is a problem in that civil complaints are frequently generated because it is mistaken for exhaust gas such as soot containing various pollutants, and a separate condensing facility is provided to condense the generated steam There was a problem of poor energy efficiency, such as an increase in equipment cost and the need to use separate energy to drive it.

Korean Patent Publication No. 10-2020-0120190 Korean Patent Registration No. 10-0732228

The present invention has been devised in view of the above problems, and the technical problem to be solved by the present invention is a complex heat source that can be utilized as a cooling means using both hot water and steam (steam) as waste heat generated from power generation facilities, etc. To provide an absorption chiller using

That is, the technical problem to be solved by the present invention is to use steam as waste heat along with hot water generated from power generation facilities, etc. to be utilized as a cooling means, wherein the steam is condensed by heat exchange and recovered in a liquid (water) state. By draining it to the outside or reusing it as water for power generation facilities, we provide an absorption chiller using a complex heat source that can improve energy efficiency by suppressing civil complaints due to steam discharge and reducing water use according to the operation of power generation facilities. will be.

In addition, another technical problem to be solved by the present invention is by not having a separate condensing facility for condensing the vapor as the vapor is condensed into a liquid (water) state by heat exchange with the refrigerant by the regenerator. It is to provide an absorption chiller using a combined heat source that can reduce space and reduce energy consumption due to condensation, which ultimately maximizes energy efficiency.

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

In an absorption refrigerator using a complex heat source according to an embodiment of the present invention for solving the above problems, a first regenerator in which a dilute solution passing through a dilute solution line is heat-exchanged with hot water passing through a hot water line to be converted into an intermediate solution; An auxiliary regenerator in which the auxiliary dilute solution passing through the dilute solution line is heat-exchanged with the hot water passing through the hot water line to be converted into an auxiliary concentrated solution, and the refrigerant vapor generated from the first regenerator and the auxiliary regenerator passes through the cooling water line; A first shell comprising a condenser condensed by heat exchange; An evaporator in which the cold water passing through the cold water line is cooled by the heat of vaporization of the refrigerant passing through the refrigerant line, and an absorber in which the refrigerant vapor generated in the evaporator and the concentrated solution passing through the concentrated solution line are mixed and converted into a dilute solution a second shell; A second regenerator in which the intermediate liquid converted in the first regenerator is heat-exchanged with the hot water passing through the hot water line and converted into a concentrated solution, and the auxiliary concentrated solution passing through the refrigerant vapor generated in the second regenerator and the auxiliary concentrated solution line a third shell including an auxiliary absorber that is mixed and converted into an auxiliary dilute solution; and the steam is passed through the first regenerator of the first shell and heat exchanges with the dilute solution passing through the dilute solution line to convert the dilute solution into a concentrated solution, and the passing steam exchanges heat with the dilute solution. It may be of a configuration further comprising a vapor line that is converted into a liquid by.

Here, the steam line is disposed on the lower side of the hot water line, and hot water or steam may be selectively supplied through the hot water line and the steam line.

At this time, when steam is supplied through the steam line, heat exchange with the steam passing through the steam line in the first regenerator passing through the dilute solution line is converted into a concentrated solution, and the converted concentrated solution passes through the second regenerator It is dispersed through the absorber and converted into a dilute solution by heat exchange with coolant vapor flowing through the absorber and refrigerant vapor flowing from the evaporator, and the converted dilute solution is supplied to the first regenerator, and the vapor passing through the vapor line is It may be converted into a liquid by heat exchange with the dilute solution passing through the dilute solution line.

Meanwhile, a baffle plate may be installed between the hot water line and the steam line so that the dilute solution passing through the hot water line flows in one direction.

Other specific details of the invention are included in the detailed description and drawings.

According to the absorption chiller using a composite heat source according to an embodiment of the present invention, the effect of using both hot water and steam (steam) as waste heat generated from power generation facilities and the like can be provided as a cooling means.

That is, according to the absorption refrigerator using a complex heat source according to an embodiment of the present invention, steam can be used as waste heat along with hot water generated from power generation facilities, etc. to be used as a cooling means, and the steam is condensed by heat exchange to form a liquid (water ) and then drained to the outside or reused as water for power generation facilities, civil complaints due to steam discharge are suppressed and the use of water according to the operation of power generation facilities is reduced, thereby improving energy efficiency can be provided.

In addition, according to the absorption refrigerator using a complex heat source according to an embodiment of the present invention, as the vapor is condensed into a liquid (water) state by heat exchange with the refrigerant by the regenerator, a separate condensing facility for condensing the vapor is not provided. As this is not necessary, the effect of further maximizing energy efficiency can be provided by reducing the facility space and reducing energy consumption due to condensation.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a block diagram showing an operating relationship of an absorption chiller using a composite heat source according to an embodiment of the present invention, and is a block diagram showing the operating relationship when hot water is supplied.
FIG. 2 is a block diagram illustrating an operation relationship of an absorption chiller using a complex heat source according to an embodiment of the present invention, and is a block diagram illustrating an operation relationship when steam is supplied.
FIG. 3 is a cross-sectional view showing the configuration of the first regenerator in FIGS. 1 and 2, and is a cross-sectional view taken in the X-axis direction when viewed from the top.
FIG. 4 is a cross-sectional view illustrating the configuration of the first regenerator in FIGS. 1 and 2, and is a cross-sectional view taken in the Y-axis direction when viewed from the top.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, includes and/or comprising means not excluding the presence or addition of one or more other components, steps and/or actions other than the stated components, steps and/or actions. use it as And, “and/or” includes each and every combination of one or more of the recited items.

Further, the embodiments described herein will be described with reference to perspective, cross-sectional, side view and/or schematic views that are ideal illustrative views of the present invention. Accordingly, the form of the illustrative drawing may be modified due to manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include changes in the form generated according to the manufacturing process. In addition, in each drawing shown in the embodiment of the present invention, each component may be illustrated in a somewhat enlarged or reduced manner in consideration of convenience of description.

Hereinafter, an absorption chiller using a composite heat source according to an embodiment of the present invention will be described in detail based on the accompanying exemplary drawings.

1 is a block diagram showing an operation relationship of an absorption refrigerator using a composite heat source according to an embodiment of the present invention, and is a block diagram showing an operation relationship when hot water is supplied, and FIG. 2 is an embodiment of the present invention. As a configuration diagram for showing the operating relationship of the absorption chiller using a composite heat source according to the following, it is a configuration diagram showing the operating relationship when steam is supplied.

3 is a cross-sectional view showing the configuration of the first regenerator in FIGS. 1 and 2, a cross-sectional view in the X-axis direction when viewed from the top, and FIG. 4 is a cross-sectional view showing the configuration of the first regenerator in FIGS. 1 and 2 , which is a cross-sectional view in the Y-axis direction when viewed from the top.

1 and 2, the absorption chiller using a composite heat source according to an embodiment of the present invention, the first regenerator 110, the auxiliary regenerator 120, and the condenser 130 are disposed in the first shell 100 and the second shell 200 in which the evaporator 210 and the absorber 220 are disposed, and the third shell 300 in which the second regenerator 310 and the auxiliary absorber 320 are disposed. .

In the first shell 100 , the first regenerator 110 is disposed below, the auxiliary regenerator 120 is disposed above the first regenerator 110 , and the condenser 130 is disposed above the auxiliary regenerator 120 . can be placed.

That is, since the first regenerator 110 , the auxiliary regenerator 120 , and the condenser 130 operate at the same pressure, they may be disposed together in the first shell 100 .

In addition, in the second shell 200, the evaporator 210 and the absorber 220 are also disposed adjacent to each other on the left and right, and may be partitioned by a first eliminator (reference numeral not assigned) located in the center.

Further, in the third shell, the second regenerator 310 and the auxiliary absorber 320 may be disposed adjacent to each other on the left and right, and may be partitioned by the first eliminator located in the center.

On the other hand, the absorption refrigerator using a complex heat source according to an embodiment of the present invention, a refrigerant line (L1), an absorption liquid line (L2, L3, L4) (dilute solution line (L2), an intermediate solution line (L3), a concentrated solution line (L4)), cooling water line (L5), hot water line (L6), cold water line (L7), auxiliary absorbent line (L8, L9) (auxiliary dilute solution line (L8), auxiliary concentrated solution line (L9)) and steam It may be configured to further include a line L10.

First, the refrigerant line L1 provides a movement path of the refrigerant between the condenser 130 and the evaporator 210, and the refrigerant condensed in the condenser 130 is supplied to the evaporator 210 through the refrigerant line L1. It is distributed through the distributor 212 in the evaporator 210, and thus achieves heat exchange with the cold water passing through the cold water line L7 to be described later.

At this time, the refrigerant collected in the lower portion of the evaporator 210 may be supplied back to the distributor 212 through the recirculation line according to the preset temperature of the cold water line L7.

In addition, the absorbent liquid lines L2, L3, and L4 may provide a movement path of the absorbent liquid circulating in the main cycle. At this time, the absorption liquid absorbs refrigerant vapor during the main cycle and becomes diluted (dilute solution), medium concentration state in which refrigerant vapor is partially separated (intermediate liquid), and thick concentration state in which refrigerant vapor is separated (concentrate liquid) In the following, the absorbent solution will be described by dividing it into a dilute solution, an intermediate solution, and a concentrated solution.

The dilute solution line L2 constituting the absorber line is connected between the absorber 220 and the first regenerator 110, and accordingly, the dilute solution collected in the lower part of the absorber 220 passes through the dilute solution line L2 to the first regenerator. 110 , and thus, the dilute solution provided to the first regenerator 110 may be distributed through the distributor 112 inside the first regenerator 110 .

Here, the dilute solution line L2 may provide the dilute solution to the first regenerator 110 while sequentially passing through the low-temperature heat exchanger 400 and the high-temperature heat exchanger 410 . Accordingly, the dilute solution may be heat-exchanged with the concentrated solution in the low-temperature heat exchanger 400 and heat exchanged with the intermediate solution in the high-temperature heat exchanger 410 , wherein the concentrated solution in the low-temperature heat exchanger 400 is transferred to the second regenerator 310 . is provided from, and the intermediate liquid of the high-temperature heat exchanger 410 may be provided from the first regenerator 110 .

For reference, the dilute solution line L2 may be formed to pass through the upper portion of the absorber 220 in the stage before the low-temperature heat exchanger 400 to exchange heat with the concentrated solution and refrigerant vapor in the absorber 220, a detailed description thereof will be described in detail later.

In addition, the intermediate liquid line L3 is connected between the first regenerator 110 and the second regenerator 310, and accordingly, the intermediate liquid collected in the lower portion of the first regenerator 110 is discharged through the intermediate liquid line L3. The second regenerator 310 may be provided, and the intermediate liquid provided to the second regenerator 310 in this way may be distributed through the distributor 312 inside the second regenerator 310 .

Here, the intermediate liquid line L3 may be provided to the second regenerator 310 after heat exchange with the dilute solution through the high temperature heat exchanger 410 .

In addition, the concentrated solution line L4 is connected between the second regenerator 310 and the absorber 220, and accordingly, the concentrated solution collected in the lower portion of the second regenerator 310 is transferred to the absorber 220 through the concentrated solution line L4. ), and thus, the concentrated solution provided to the absorber 220 may be dispersed through the distributor 222 inside the absorber 220 .

Here, the concentrated solution line L4 may be provided to the absorber 220 after heat exchange with the dilute solution via the low temperature heat exchanger 400 .

In addition, the cooling water line L5 provides a movement path of the cooling water supplied from the outside, and may be formed to sequentially pass through the absorber 220 , the auxiliary absorber 320 , and the condenser 130 .

That is, the cooling water provided through the cooling water inlet may be discharged to the cooling water outlet through the absorber 220, the auxiliary absorber 320, and the condenser 130 sequentially along the cooling water line L5. At this time, through the cooling water outlet The discharged cooling water may pass through a cooling means such as a cooling tower and again be supplied through a cooling water inlet.

In addition, the hot water line L6 provides a movement path of the hot water supplied from the outside, such as a power generation facility, and is formed to sequentially pass through the first regenerator 110 , the second regenerator 310 , and the auxiliary regenerator 120 . can be

That is, the hot water provided through the hot water inlet may be discharged through the hot water outlet by sequentially passing through the first regenerator 110, the second regenerator 310, and the auxiliary regenerator 120 along the hot water line L6. At this time, the hot water discharged through the hot water outlet may be supplied back to the hot water inlet through a power generation facility.

In addition, the cold water line L7 provides a movement path of the cold water supplied from the outside, and may be formed to pass through the evaporator 210 . That is, the cold water provided through the cold water inlet of the cold water line may be cooled by the heat of vaporization of the refrigerant in the evaporator 210 while moving along the cold water line L7 and then provided to the demand.

At this time, as described above, the refrigerant is dispersed within the evaporator 210 , and the dispersed refrigerant exchanges heat with the cold water passing through the cold water line L7 and is vaporized to cool the cold water in the cold water line L7 by the heat of vaporization. The refrigerant vapor vaporized in the evaporator 210 moves to the absorber 220 adjacent to the evaporator 210 through the first eliminator, and an operation relationship therefor will also be described in detail later.

In addition, the auxiliary dilute solution line (L2) is connected between the auxiliary absorber 320 and the auxiliary regenerator 120, and the auxiliary dilute solution collected at the lower part of the auxiliary absorber 320 is connected to the auxiliary regenerator (L2) through the auxiliary dilute solution line (L2). 120), and thus, the auxiliary dilute solution provided to the auxiliary regenerator 120 may be dispersed through the distributor 122 inside the auxiliary regenerator 120.

Here, the auxiliary dilute solution line L2 may provide the auxiliary dilute solution to the auxiliary regenerator 120 via the auxiliary heat exchanger 500 , and thus can be exchanged with the auxiliary concentrated solution in the auxiliary heat exchanger 500 . there is.

In addition, the auxiliary concentrated solution line (L4) is connected between the auxiliary regenerator 120 and the auxiliary absorber 320, and the auxiliary concentrated solution collected in the lower part of the auxiliary regenerator 120 is the auxiliary absorber (L4) through the auxiliary concentrated solution line (L4). 320 , and thus, the auxiliary concentrated solution provided to the auxiliary absorber 320 may be distributed through the distributor 322 in the auxiliary absorber 320 .

Here, the auxiliary concentrated solution line (L4) may provide the auxiliary concentrated solution to the auxiliary absorber 320 via the auxiliary heat exchanger 500, and thus can exchange heat with the auxiliary diluted solution in the auxiliary heat exchanger 500. there is.

Finally, the steam line (L10) is formed to circulate the intermediate liquid collected in the lower side of the first regenerator (110), and accordingly, the steam provided through the steam inlet of the steam line (L10) is in the first regenerator (110). After performing a phase change to liquid (water) by exchanging heat with the intermediate liquid, it may be discharged through a vapor outlet to be drained or supplied as water for power generation facilities or the like.

Meanwhile, FIG. 3 is a cross-sectional view illustrating the configuration of the first regenerator in FIGS. 1 and 2, a cross-sectional view in the X-axis direction when viewed from the top, and FIG. 4 is a cross-sectional view illustrating the configuration of the first regenerator in FIGS. 1 and 2 . As a cross-sectional view in the Y-axis direction when viewed from the top, referring to FIGS. 3 and 4 , the hot water line L6 and the steam line L10 are sequentially arranged on the lower side of the distributor 112 of the first regenerator 110 . It may consist of a configuration arranged as

At this time, the hot water line (L6) is disposed on the upper side and the steam line (L10) is disposed on the lower side, a baffle plate 114 may be provided therebetween.

Here, the baffle plate 114 is formed in multiple stages so that the diluted solution passing through the hot water line L6 has fluidity in one direction, and a passage hole is formed on one side so that the diluted solution flows slowly in the zigzag direction. desirable.

Absorption refrigerators using a complex heat source that can be configured as described above may have different operating relationships as hot water or steam is supplied as waste heat. Hereinafter, each operating relationship will be described by dividing it into a case in which hot water or steam is supplied. decide to do

<When hot water is supplied as waste heat>

As described above, the absorption liquid is composed of two circulation systems, a main system and an auxiliary system, and when hot water is supplied as waste heat, both circulation systems are operated.

For reference, in the case of an absorption refrigerator using a composite heat source according to an embodiment of the present invention, when hot water is supplied as waste heat through the hot water line L6, steam is not supplied through the steam line L10, and vice versa. When steam is supplied as waste heat through the steam line L10, it is configured such that hot water is not supplied through the hot water line L6.

Therefore, it is preferable that the hot water line (L6) and the steam line (L10) are selectively provided with hot water or steam by a three-way valve.

First, looking at the main system, the concentrated solution dispersed in the absorber 220 may be mixed with the refrigerant vapor generated in the evaporator 210 to be converted into a dilute solution. That is, the concentrated solution and refrigerant vapor are converted into a dilute solution by heat exchange with the cooling water passing through the cooling water line L5 and the dilute solution passing through the dilute solution line L2 in the absorber 220, and then the absorber 220 ) can be collected at the bottom of the

Here, the dilute solution collected in the lower part of the absorber 220 is heat-exchanged with the concentrated solution and the intermediate solution while passing through the low-temperature heat exchanger 400 and the high-temperature heat exchanger 410 through the dilute solution line L2. In the previous stage of the low-temperature heat exchanger 400, heat exchange with the concentrated solution may be further made via the upper portion of the absorber 220.

In this way, the dilute solution that has passed through the low-temperature heat exchanger 400 and the high-temperature heat exchanger 410 is dispersed by the distributor 112 in the first regenerator 110, and the dispersed dilute solution passes through the hot water line L6. After being heated by hot water to generate an intermediate liquid having a relatively thick concentration as the refrigerant vapor is separated, it may be collected at the lower portion of the first regenerator 110 .

The intermediate liquid collected in the lower portion of the first regenerator 110 is dispersed by the distributor 312 in the second regenerator 310 via the high-temperature heat exchanger 410, and the dispersed intermediate liquid passes through the hot water line L6. After being heated by hot water and the remaining refrigerant vapor is separated, it is generated as a concentrated solution having a relatively higher concentration, and then it may be collected in the lower portion of the second regenerator 310 .

In this way, the concentrated solution collected in the lower part of the second regenerator 310 is distributed by the distributor 222 in the absorber 220 via the low-temperature heat exchanger 400 through the concentrated solution line L4, etc. The cycle is made by repeating the process.

Meanwhile, looking at the auxiliary system, the auxiliary concentrated solution dispersed in the auxiliary absorber 320 may be mixed with the refrigerant vapor generated in the second regenerator 310 to be converted into the auxiliary diluted solution. That is, the auxiliary concentrated solution and the refrigerant vapor are converted into the auxiliary dilute solution by heat exchange with the cooling water passing through the cooling water line L5 in the auxiliary absorber 320 , and then may be collected in the lower portion of the auxiliary absorber 320 . .

At this time, the refrigerant vapor generated in the second regenerator 310 may be introduced into the auxiliary absorber 320 through the second eliminator (reference numeral not assigned).

Here, the auxiliary dilute solution collected in the lower part of the auxiliary absorber 320 is heat-exchanged with the auxiliary concentrated solution while passing through the auxiliary heat exchanger 500 through the auxiliary dilute solution line L2, and passes through the auxiliary heat exchanger 500 in this way. The auxiliary diluted solution is dispersed by the distributor 122 in the auxiliary regenerator 120, and the dispersed auxiliary diluted solution is heated by the hot water passing through the hot water line L6 and the concentration is relatively increased as the refrigerant vapor is separated. After being produced as an auxiliary concentrated solution, it may be collected in the lower portion of the auxiliary regenerator 120 .

The auxiliary concentrated solution collected in the lower part of the auxiliary regenerator 120 is distributed by the distributor 322 from the auxiliary absorber 320 via the auxiliary heat exchanger 500 again through the auxiliary concentrated solution line L4, etc. The cycle is made by repeating the process.

On the other hand, the refrigerant vapor separated from the first regenerator 110 and the auxiliary regenerator 120 is introduced into the condenser 130 through the third eliminator 132 in the first shell 100, and the condenser 130 ), the refrigerant vapor introduced into the condenser 130 is cooled by heat exchange with the cooling water passing through the cooling water line L5 in the condenser 130 to be converted into a liquid refrigerant.

The liquid refrigerant converted in this way is collected in the lower part of the condenser 130, and then provided to the evaporator 210 through the refrigerant line L1, thereby passing the cold water line L7 passing through the evaporator 210. It can be used for cooling of cold water.

<When steam is supplied as waste heat>

As described above, the absorption liquid consists of two circulation systems, the main system and the auxiliary system. When steam is supplied as waste heat, only the main system operates among the two circulation systems, and the auxiliary system does not operate. won't

That is, in the case of an absorption refrigerator using a composite heat source according to an embodiment of the present invention, when hot water is supplied as waste heat through the hot water line L6, steam is not supplied through the steam line L10, and conversely, steam When steam is supplied as waste heat through the line L10, it is configured such that hot water is not supplied through the hot water line L6.

Therefore, it is preferable that the hot water line (L6) and the steam line (L10) are selectively provided with hot water or steam by a three-way valve.

As shown in FIG. 2 , when steam is provided through the vapor line L10 , the concentrated solution dispersed in the absorber 220 is mixed with the refrigerant vapor generated in the evaporator 210 to be converted into a dilute solution. . That is, the concentrated solution and refrigerant vapor are converted into a dilute solution by heat exchange with the cooling water passing through the cooling water line L5 and the dilute solution passing through the dilute solution line L2 in the absorber 220, and then the absorber 220 ) can be collected in the lower part of the

Here, the dilute solution collected in the lower part of the absorber 220 is heat-exchanged with the concentrated solution while passing through the low-temperature heat exchanger 400 and the high-temperature heat exchanger 410 through the dilute solution line L2. In the previous step (400), heat exchange with the concentrated solution may be further made via the upper portion of the absorber (220).

As such, the dilute solution that has passed through the low-temperature heat exchanger 400 and the high-temperature heat exchanger 410 is dispersed by the distributor 112 in the first regenerator 110, and the diffused dilute solution passes through the vapor line L10. After being heated by the steam to generate a concentrated solution having a relatively thick concentration as the refrigerant vapor is separated, it may be collected at the lower portion of the first regenerator 110 .

The concentrated solution collected in the lower part of the first regenerator 110 is spread by the distributor 312 in the second regenerator 310 via the high-temperature heat exchanger 410, and the dispersed concentrated solution is the second regenerator 310 lower. can be captured in

In this way, the concentrated solution collected in the lower part of the second regenerator 310 is distributed by the distributor 222 in the absorber 220 via the low-temperature heat exchanger 400 through the concentrated solution line L4, etc. The cycle is made by repeating the process.

At this time, the refrigerant vapor separated from the first regenerator 110 flows into the condenser 130 through the third eliminator 132 in the first shell 100 , and the refrigerant vapor introduced into the condenser 130 . is cooled by heat exchange with the cooling water passing through the cooling water line L5 in the condenser 130 to be converted into a liquid refrigerant.

The liquid refrigerant converted in this way is collected in the lower part of the condenser 130, and then provided to the evaporator 210 through the refrigerant line L1, thereby passing the cold water line L7 passing through the evaporator 210. It can be used for cooling of cold water.

As described above, according to the absorption chiller using a composite heat source according to an embodiment of the present invention, steam can be used as waste heat along with hot water generated from power generation facilities as a cooling means, wherein the steam is condensed by heat exchange. After being recovered in liquid (water) state, it is drained to the outside or reused as water for power generation facilities, thereby suppressing civil complaints due to steam discharge and reducing water use due to the operation of power generation facilities, thereby improving energy efficiency. can

In addition, as the vapor is condensed into a liquid (water) state by heat exchange with the refrigerant by the regenerator, there is no need to provide a separate condensing facility for condensing the vapor, thereby reducing equipment space and reducing energy consumption due to condensation. An effect of further maximizing efficiency may be provided.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

100: first shell 110: first regenerator
112: distributor 120: auxiliary regenerator
122: distributor 130: condenser
132: third eliminator 200: second shell
210: evaporator 212: distributor
220: absorber 222: divider
300: third shell 310: second regenerator
312: distributor 320: auxiliary absorber
322: distributor 400: low-temperature heat exchanger
410: high temperature heat exchanger 500: auxiliary heat exchanger
L1: refrigerant line L2: dilute solution line
L3: Intermediate line L4: Concentrate line
L5: coolant line L6: hot water line
L7: Cold water line L8: Auxiliary diluent line
L9 : auxiliary concentrate line L10 : steam line

Claims (4)

The first regenerator in which the dilute solution passing through the dilute solution line is heat-exchanged with the hot water passing through the hot water line to be converted into an intermediate solution, and the auxiliary dilute solution passing through the auxiliary dilute solution line is heat-exchanged with the hot water passing through the hot water line to assist a first shell including an auxiliary regenerator converted into a concentrated solution, and a condenser in which refrigerant vapor generated from the first regenerator and the auxiliary regenerator is heat-exchanged with a refrigerant passing through a cooling water line and condensed;
An evaporator in which the cold water passing through the cold water line is cooled by the heat of vaporization of the refrigerant passing through the refrigerant line, and an absorber in which the refrigerant vapor generated in the evaporator and the concentrated solution passing through the concentrated solution line are mixed and converted into a dilute solution a second shell;
A second regenerator in which the intermediate liquid converted in the first regenerator is heat-exchanged with the hot water passing through the hot water line and converted into a concentrated solution, and the auxiliary concentrated solution passing through the refrigerant vapor generated in the second regenerator and the auxiliary concentrated solution line In the absorption chiller comprising; a third shell including a secondary absorber that is mixed and converted into an auxiliary dilute solution,
It is disposed on the lower side of the hot water line in the first regenerator of the first shell, and heat exchanges with the dilute solution passing through the dilute solution line so that the dilute solution is converted into a concentrated solution, and the steam passes through the steam. Further comprising a vapor line converted into a liquid by heat exchange with the dilute solution,
When hot water or steam is selectively supplied through the hot water line and the steam line, and steam is supplied through the steam line,
The converted concentrated solution is dispersed through the absorber through the second regenerator, and is converted into a dilute solution by heat exchange with cooling water passing through the absorber and refrigerant vapor flowing from the evaporator,
The converted dilute solution is supplied to the first regenerator,
The vapor passing through the vapor line is converted into a liquid by heat exchange with the dilute solution passing through the dilute solution line,
The refrigerant vapor separated from the first regenerator by heat exchange between the vapor and the dilute solution is introduced into the condenser in the first shell,
The refrigerant vapor flowing into the condenser is cooled by heat exchange with the cooling water passing through the cooling water line in the condenser and converted into a liquid refrigerant,
The converted liquid refrigerant is collected in the lower part of the condenser, and then provided to the evaporator through the refrigerant line to cool the cold water passing through the cold water line passing through the evaporator.
delete delete The method of claim 1,
Between the hot water line and the steam line,
An absorption chiller using a complex heat source, characterized in that a baffle plate is installed so that the dilute solution passing through the hot water line flows in one direction.

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