KR101652484B1 - Heating and hot water supply chiller of low temperature water two-stage absorption - Google Patents

Heating and hot water supply chiller of low temperature water two-stage absorption Download PDF

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Publication number
KR101652484B1
KR101652484B1 KR1020150065155A KR20150065155A KR101652484B1 KR 101652484 B1 KR101652484 B1 KR 101652484B1 KR 1020150065155 A KR1020150065155 A KR 1020150065155A KR 20150065155 A KR20150065155 A KR 20150065155A KR 101652484 B1 KR101652484 B1 KR 101652484B1
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South Korea
Prior art keywords
regenerator
hot water
line
water
shell
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KR1020150065155A
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Korean (ko)
Inventor
배규현
송현규
금백철
정용진
류진상
김철기
이영석
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한국지역난방공사
(주) 월드에너지
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/008—Sorption machines, plants or systems, operating continuously, e.g. absorption type with multi-stage operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B17/00—Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type
    • F25B41/046—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2315/00—Sorption refrigeration cycles or details thereof

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

The present invention relates to a low temperature water two stage absorption type chiller and, specifically, to a low temperature water two stage absorption type chiller capable of heating a room and supplying hot water, which passes a main local room heating water line through a first regenerator and an assistant regenerator, passes a branch local room heating water line, branching off from the main local room heating water line, through only the first regenerator, connecting the branch local room heating water line and a room heating water line to each other using a three directional valve to supply local room heating water via only the branch local room heating line during room heating, and supplying warm water to the main local room heating water line passed through the assistant regenerator, thereby making the warm water and the local room heating water exchange heat in the first regenerator and the assistance regenerator to heat a room with the heated warm water and supplying the local warm water via only the main local room heating line during cooling a room to supply heat to an absorption liquid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a low-temperature water two-stage absorption refrigerator capable of heating and hot-

More particularly, the present invention relates to a low-temperature water two-stage absorption refrigerator, in which a main district heating water line is passed through a first regenerator and an auxiliary regenerator, and a branch district heating water line branched from a main district heating water line is connected to a first regenerator And the branch district heating water line and the heating water line are interconnected by using the three-way valve so that the district heating water is supplied only to the branch district heating water line during the heating and the main district heating water line passing through the auxiliary regenerator is connected to the hot water So that the hot water and the district heating water are heat-exchanged in the regenerator 1 and the auxiliary regenerator to heat the heated hot water, and the district heating water is supplied only to the main district heating water line during cooling, thereby supplying heat to the absorption liquid To a low temperature water two stage absorption refrigerator capable of heating and hot water supply.

An absorption refrigerator is a refrigerator that uses water vaporized when a refrigerant evaporates to cool water flowing through the pipe and condenses the evaporated refrigerant for reuse.

On the other hand, a low-temperature water two-stage absorption refrigerator using a hot-water pipe of district heating has been developed. Such a low-temperature water two-stage absorption refrigerator has two cycles. When the cooling load is lowered to 80% or less, The efficiency (COP) can be improved by 25%. Most of the cooling season, except for the hot season, is operated with a cooling load of 80% or less.

The low temperature water two stage absorption chiller is a pollution free product that uses water as a refrigerant and it is a product that can prevent concentration of power in summer by using heat energy as a driving source. In addition, it is operated safely in a vacuum state, and it can be operated automatically as a combined product with a heat exchanger, thus enabling unattended operation.

This low temperature water two stage absorption type freezer is disclosed in Korean Patent Publication No. 10-1377690 filed by the present applicant and entitled " High efficiency low temperature water two stage absorption type freezer using an absorption heat exchanger ".

1, the high-efficiency low-temperature water two-stage absorption refrigerator 100 using the absorption heat exchanger includes a first shell 110, a second shell 120, a third shell 130, 1 absorption heat exchanger 210, a second absorption heat exchanger 220, a first distributor 230, and a second distributor 240.

The evaporator 111 is disposed on the left side of the first shell 110 and the absorber 112 is disposed on the right side of the evaporator 111 and the first evaporator 111 is disposed between the evaporator 111 and the absorber 112. 113 are installed.

The second shell 120 includes a first regenerator 121, an auxiliary regenerator 122 and a condenser 123 sequentially installed from below and a second eliminator 124 on the side of the condenser 123, Respectively.

In the third shell 130, the second regenerator 131 is installed on the upper part, the auxiliary absorber 132 is installed on the lower part, and the second regenerator 131 and the auxiliary absorber 132 are respectively dropped on the bottom surface The third absorber 134 is provided between the second regenerator 131 and the auxiliary absorber 132. The third absorber 134 is provided between the second regenerator 131 and the auxiliary absorber 132,

On the other hand, the low temperature heat exchanger 140, the high temperature heat exchanger 150, and the auxiliary heat exchanger 160 are connected to the respective devices through the absorption liquid line.

The first absorption heat exchanger 210 is disposed at the upper end of the absorber 112 of the first shell 110 and discharges the diluted absorbent discharged from the first shell 110 to the low temperature heat exchanger 140 (Intermediate liquid) which is injected toward the upper end of the absorber 112 is absorbed and heated, and then supplied to the low-temperature heat exchanger 140.

The second absorption heat exchanger 220 is disposed at the upper end of the auxiliary absorber 132 of the third shell 130 and supplies the diluted auxiliary absorption liquid (auxiliary intermediate liquid) discharged from the third shell 130 to the auxiliary heat exchanger Absorbing heat of the concentrated auxiliary absorbing liquid (auxiliary concentrating liquid) injected to the upper end of the auxiliary absorber 132 in the main absorber 160, and then supplies the heated auxiliary absorbing liquid to the auxiliary heat exchanger 160.

The first distributor 230 is disposed at an intermediate portion of the evaporator 111 of the first shell 110 constituted by the heat transfer tube and temporarily stores the refrigerant sprayed by the evaporator 111 and then re- Allow the refrigerant to evenly touch the surface.

The second distributor 240 is disposed at an intermediate portion of the absorber 112 of the first shell 110 formed of the heat transfer tube and temporarily stores the diluted absorbent injected into the absorber 112 and drops it again to drop the absorber 112, So that the absorbing liquid is uniformly brought into contact with the surface of the absorbent article.

Hereinafter, the operation of the high-efficiency low-temperature water two-stage absorption refrigerator using the conventional absorption heat exchanger will be described in detail with reference to the accompanying drawings.

First, the operation of the main system will be described. The absorbed liquid (diluted liquid), which is scattered at the upper end of the absorber 112 and absorbs the refrigerant vapor, is discharged from the absorber 112 and pressurized by the pump 101, (210). At this time, since the second distributor 240 is installed at the middle portion of the absorber 112, the absorbing liquid injected into the absorber 112 is temporarily stored in the second distributor 240 and then dropped again, .

Then, the dilute liquid absorbs the heat of the intermediate diluted absorption liquid (intermediate liquid) injected to the upper end of the absorber 112 while passing through the first absorption heat exchanger 210, and is then heated and then supplied to the low temperature heat exchanger 140 Temperature heat exchanger 140 and the high-temperature heat exchanger 150 to the first regenerator 121 to be dispersed at the upper portion of the first regenerator 121 to discharge a portion of the refrigerant vapor, The intermediate liquid) is delivered to the second regenerator 131 via the high-temperature heat exchanger 150 via the pump 101, and is dispersed in the upper portion of the second regenerator 131.

The concentrated absorption liquid (rich liquid) discharged from the second regenerator 131 is returned to the absorber 112 via the low temperature heat exchanger 140 by the pump 101 and dispersed at the upper end of the absorber 112.

The auxiliary absorption liquid (auxiliary auxiliary liquid) which has absorbed the refrigerant vapor from the second regenerator 131 is discharged from the auxiliary absorber 132 and pressurized by the pump 101 to be supplied to the auxiliary heat exchanger 160, To the auxiliary player 122.

The refrigerant vapor is discharged at the top of the auxiliary regenerator 122 and the concentrated auxiliary absorbent liquid (auxiliary rich liquid) is returned to the auxiliary absorber 132 via the auxiliary heat exchanger 160.

At this time, the second absorption heat exchanger 220 separates the diluted auxiliary absorbing liquid (auxiliary intermediate liquid) discharged from the third shell 130 into a column of the concentrated auxiliary absorbing liquid (auxiliary concentrating liquid) And then supplied to the auxiliary heat exchanger (160).

In the condenser 123, on the other hand, the refrigerant vapor generated in the first regenerator 121 and the auxiliary regenerator 122 is condensed, and the refrigerant liquid is transferred to the evaporator 111. In the evaporator 111, the refrigerant is dispersed to the upper portion of the evaporator 111 by the pump 101, and the partially evaporated refrigerant vapor is delivered to the absorber 112 through the first eliminator 113. The non-evaporated refrigerant liquid is returned to the bottom of the evaporator 111 and is again distributed to the top of the evaporator 111 by the pump 101. [ In this case, since the first distributor 230 is installed in the middle of the evaporator 111, the refrigerant sprayed to the evaporator 111 is temporarily stored in the first distributor 230, .

The cooling water flows through the tube of the evaporator 111 and is used for cooling. The cooling water is heated by absorbing heat while passing through the absorber 112, the auxiliary absorber 132 and the condenser 123, (Not shown) to discharge the heat to the atmosphere, cool, and continue to circulate back to absorber 112. [

However, the conventional high-efficiency low-temperature water two-stage absorption refrigerating machine using the absorption heat exchanger merely performs cooling only, but can not provide heating and hot water supply.

Korean Patent Registration No. 10-1377690 Korean Patent Registration No. 10-0895885

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and a system for controlling a heating system in which a main district heating water line is passed through a first regenerator and an auxiliary regenerator, The branch district heating water line and the heating water line are interconnected using a three-way valve so that the district heating water is supplied only to the branch district heating water line and the hot water is supplied to the main district heating water line passing through the auxiliary regenerator The heating and hot water heating is performed so that the hot water and the district heating water are heat-exchanged in the regenerator 1 and the auxiliary regenerator, and the district heating water is supplied only to the main district heating water line during cooling, And an object of the present invention is to provide a low-temperature water two-stage absorption refrigerator capable of achieving this.

In addition, the present invention provides a low-temperature water two-stage absorption type refrigerator capable of heating and hot water supply by providing a hot water heat exchanger for exchanging heat between the district heating water branching from the main district heating water hot water line and hot water hot water, There are other purposes to provide.

According to an aspect of the present invention,

A first shell having an evaporator, an absorber, and an absorption heat exchanger; A second shell having a first regenerator, an auxiliary regenerator and a condenser; A third shell having a second regenerator and a secondary absorber; A high temperature heat exchanger; A low temperature heat exchanger; An auxiliary heat exchanger; A plurality of pumps and a coolant line connecting them; And a low-temperature water two-stage absorption refrigerator including an absorption liquid line; A second regenerator disposed in the first regenerator of the second shell and inside the auxiliary regenerator for heat-exchanging the district heating hot water with the absorbing solution dropped by the first regenerator and the auxiliary regenerator, A main district heating water line for discharging the main heating water line to the outside; A branch district heating water line branching between the first regenerator and the auxiliary regenerator of the second shell; A cold / hot water line installed in association with the inside of the evaporator of the first shell, for exchanging cold water with an absorbing liquid dropped in the evaporator of the first shell, and supplying hot water to the second shell; And the other end is connected to the main region heating water line at the rear end of the first regenerator of the second shell and the rear end of the auxiliary regenerator to connect hot water flowing through the hot / A heating water line which is heated and discharged to the cold / hot water line; And a main outdoor heating water line, a branch district heating water line, a cold / hot water line, and a heating water line so as to vary the flow rate, and through the main and central heating water lines, the district heating water flows through the second and third shells So that the absorption liquid and the cold water are circulated through the absorption liquid line and the cold / hot water line, and the district heating water is discharged through the first district regenerator through the branch district heating water line at the time of heating, And a valve unit for supplying the heated water to the heating water line through the cold / hot water line, heating the heated water line, and circulating the absorbing liquid only through the second shell.

Here, the low-temperature water two-stage absorption refrigerator capable of heating and hot-watering includes a hot water supply line into which hot water for hot water flows and is discharged; And a hot water heat exchanger for receiving district heating water from the main district heating water line and discharging hot water heated by heat exchange with hot water supplied from the hot water supply line to the hot water supply line.

Here, the absorbing liquid line further includes a heating absorbing pump for circulating the absorbing liquid discharged from the auxiliary regenerating unit to the first regenerating unit.

Here, the valve portion is provided with a two-way valve and a three-way valve.

Here, the valve unit may include first and second valves installed in the cold / hot water line for supplying and blocking the cold water to the evaporator of the first shell; A third valve installed in the branch district heating water line to supply and block the district heating water; A fourth and a fifth valve installed at a connection portion between the main district heating water line and the heating water line to supply district heating water or hot water to the auxiliary regenerator; And an absorption liquid circulating means for circulating only the first regenerator and the auxiliary regenerator of the second shell in the heating operation and circulating the absorption liquid in the cooling mode between the first regenerator of the second shell and the auxiliary regenerator and the condenser, 13 valves.

Here, when switching from the cooling mode to the heating mode, the low-temperature water two-stage absorption refrigerating machine capable of heating and hot-filling only opens the sixth valve and the ninth valve so as to fill the absorption liquid with the first regenerator and the auxiliary regenerator of the second shell , The heating absorbing liquid pump is operated to fill a certain level of absorbing liquid, and then heating is performed.

According to the present invention, which is constructed as described above, according to the low temperature water two stage absorption refrigerator capable of heating and hot water supply, the main district heating water line is passed through the first regenerator and the auxiliary regenerator, and the branch district heating water line And the branching district heating water line and the heating water line are mutually connected by using the three-way valve so that the district heating water is supplied only to the branching district heating water line during the heating, The hot water is supplied to the heating water line so that the hot water and the district heating water are heat-exchanged by the regenerator 1 and the auxiliary regenerator to perform heating with the heated hot water, and the district heating water is supplied only to the main district heating water line Can be performed.

According to the present invention, hot water supply can be provided by providing a hot water heat exchanger for exchanging heat between the district heating water branching from the main district heating water hot water line and the hot water hot water to supply the hot water hot water.

1 is a schematic diagram showing a configuration of a high efficiency low temperature water two stage absorption type refrigerator using a conventional absorption heat exchanger.
2 is a systematic diagram showing the construction of a low temperature water two stage absorption refrigerator capable of heating and hot water supply according to the present invention.
FIG. 3 is a flow chart showing the cooling operation of the low temperature water two-stage absorption type refrigerator capable of heating and hot water supply according to the present invention.
FIG. 4 is a flowchart showing the heating operation of the low-temperature water two-stage absorption type refrigerating machine capable of heating and hot-watering according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the structure of a low temperature water two stage absorption refrigerator capable of heating and hot water supply according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

2 is a systematic diagram showing the construction of a low temperature water two stage absorption refrigerator capable of heating and hot water supply according to the present invention.

The first shell 110, the second shell 120, the third shell 130, and the third shell 130 of the low-temperature water two-stage absorption refrigerator 1 capable of heating and hot-watering according to the present invention, A low temperature heat exchanger 140, a high temperature heat exchanger 150, an auxiliary heat exchanger 160, an absorption heat exchanger 210, a first distributor 230, a second distributor 240, The cooling water line L1 and the absorption liquid line L2 connecting them are the same as those of the conventional low temperature water two stage absorption refrigerator 100 (see FIG. 1), and a description thereof will be omitted.

2, the low-temperature water two-stage absorption refrigerator 1 according to the present invention includes a main district heating water line 10, a branch district heating water line 20, a cold / hot water line 30, A heating water line 40, valve portions V1 to V13, a heating absorbing liquid pump 50, a hot water supply line 60 and a hot water heat exchanger 70. [

First, the main district heating water line 10 is installed inside the first regenerator 121 of the second shell 120 and in the auxiliary regenerator 122, and supplies the district heating high temperature water to the first regenerator 121 and the auxiliary regenerator 122, (122) and discharges the cooled district heating water to the second regenerator (131) of the third shell (130). At this time, the district heating water flowing into the second regenerator 131 of the third shell 130 is discharged through the second regenerator 131 as it is.

The branch district heating water line 20 is branched between the first regenerator 121 and the auxiliary regenerator 122 of the second shell 120. At this time, one end of the branch district heating water line 20 is connected between the first regenerator 121 and the auxiliary regenerator 122 of the second shell 120 and the other end is connected to the second regenerator 121 of the third shell 130 131).

The cold / hot water line 30 is installed in connection with the inside of the evaporator 111 of the first shell 110 to exchange heat with cold water absorbed by the evaporator 111, and hot water is supplied to the heating water line 40 ).

The heating water line 40 is connected at one end to the main district heating water line 10 at the rear end of the first regenerator 121 of the second shell 120 and at the rear end of the auxiliary regenerator 122, And the hot water flowing through the cold / hot water line 30 during heating is heated through the auxiliary regenerator 122 and discharged to the cold / hot water line 30.

The valve units V1 to V13 are provided respectively in the main district heating water line 10, the branch district heating water line 20, the cold / hot water line 30 and the heating water line 40, The local heating water is discharged through the second shell 120 and the third shell 130 through the main district heating water line 10 and the absorption liquid and the cold water circulate through the absorption liquid line L2 and the cold / So that the district heating water is discharged through the first regenerator 121 of the second shell 120 through the branch district heating water line 20 at the time of heating and the hot water is discharged through the cold water line 30 through the heating water line 30, (40) so that the absorption liquid is circulated only in the second shell (120).

Here, the valve portions (V1 to V13) are provided with a two-way valve and a three-way valve.

The valve portions V1 to V13 are provided in the cold / hot water line 30 and include first and second valves V1 and V2 for supplying and blocking the cold water to the evaporator 111 of the first shell 110, A third valve V3 provided in the heating water line 20 for supplying and blocking the district heating water and a third valve V2 installed in the connection region between the main district heating water line 10 and the heating water line 40, V4 and V5 for supplying district heating water or hot water to the auxiliary regenerator 122 of the first and second shells 120 and 120 and the absorption liquid line L2 for supplying the absorbing solution to the first A sixth to a thirteen valve (not shown) for circulating only the regenerator 121 and the auxiliary regenerator 122 and circulating the absorbing liquid upon cooling in the first regenerator 121, the auxiliary regenerator 122 and the condenser 123 of the second shell 120, (V6 to V13).

The heating absorption pump 50 is installed in the absorption liquid line L2 to circulate the absorbing liquid discharged from the auxiliary regenerator 122 to the first regenerator 121 of the second shell 120 during heating.

In addition, the hot water supply line 60 receives and discharges the hot water for hot water supply.

The hot water heat exchanger 70 is supplied with hot water for hot water from the hot water supply line 60 into which the hot water for hot water flows and discharges the hot water for the hot water from the hot water supply line 60 Hot water heated by the heat exchange with the incoming hot water is discharged to the hot water supply line 60 and the heat-exchanged district heating water is discharged through the main district heating water line 10. [

Meanwhile, the low-temperature water two-stage absorption refrigerator 1 capable of heating and hot-watering according to the present invention is configured to fill the absorption liquid with the first regenerator 121 and the auxiliary regenerator 122 of the second shell 120 when switching from cooling to heating Only the sixth valve (V6) and the ninth valve (V9) are opened to operate the heating absorbing liquid pump (50) to fill a certain level of absorbing liquid, and then the heating is performed.

Hereinafter, the operation of the low-temperature water two-stage absorption refrigerator capable of heating and hot-watering according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a system diagram showing the operation of the low-temperature water two-stage absorption type refrigerating machine capable of heating and hot-watering according to the present invention during cooling; Fig.

3, the operation of the main system of the cooling cycle will be described. The absorption liquid (diluent), which is dispersed at the upper end of the absorber 112 and absorbs the refrigerant vapor, is discharged from the absorber 112, And is supplied to the absorption heat exchanger 210. At this time, since the second distributor 240 is installed at the middle portion of the absorber 112, the absorbing liquid injected into the absorber 112 is temporarily stored in the second distributor 240 and then dropped again, .

Then, the helium absorbs the heat of the intermediate diluted absorption liquid (intermediate liquid) injected to the upper end of the absorber 112 while passing through the absorption heat exchanger 210 and is then supplied to the low temperature heat exchanger 140, The refrigerant is delivered to the first regenerator 121 via the heat exchanger 140 and the high temperature heat exchanger 150 and is dispersed at the upper portion of the first regenerator 121 to discharge a portion of the refrigerant vapor, Is delivered to the second regenerator 131 via the high-temperature heat exchanger 150 via the pump 101, and is dispersed in the upper portion of the second regenerator 131.

The concentrated absorption liquid (rich liquid) discharged from the second regenerator 131 is returned to the absorber 112 via the low temperature heat exchanger 140 by the pump 101 and dispersed at the upper end of the absorber 112.

The auxiliary absorption liquid (auxiliary auxiliary liquid) which has absorbed the refrigerant vapor from the second regenerator 131 is discharged from the auxiliary absorber 132 and pressurized by the pump 101 to be supplied to the auxiliary heat exchanger 160, To the auxiliary player 122.

The refrigerant vapor is discharged at the top of the auxiliary regenerator 122 and the concentrated auxiliary absorbent liquid (auxiliary rich liquid) is returned to the auxiliary absorber 132 via the auxiliary heat exchanger 160.

In the condenser 123, on the other hand, the refrigerant vapor generated in the first regenerator 121 and the auxiliary regenerator 122 is condensed, and the refrigerant liquid is transferred to the evaporator 111. In the evaporator 111, the refrigerant is dispersed to the upper portion of the evaporator 111 by the pump 101, and the partially evaporated refrigerant vapor is delivered to the absorber 112 through the first eliminator 113. The non-evaporated refrigerant liquid is returned to the bottom of the evaporator 111 and is again distributed to the top of the evaporator 111 by the pump 101. [ In this case, since the first distributor 230 is installed in the middle of the evaporator 111, the refrigerant sprayed to the evaporator 111 is temporarily stored in the first distributor 230, .

The cold water flows through the cold / hot water line 30 to cool the cold water through the tube of the evaporator 111 and is used for cooling. The cooling water flows through the absorber 112, the auxiliary absorber 132 and the condenser 123, (Not shown) to discharge the heat to the atmosphere, then cool, and continue to circulate back to the absorber 112.

On the other hand, the district heating water is separated from the refrigerant vapor by heating the absorption liquid through the first regenerator 121, the auxiliary regenerator 122 and the second regenerator 131 through the main district heating water line 10, The flow of hot water flows from the bottom to the top, providing a smooth flow.

At this time, the first and second valves V1 and V2, the sixth and seventh valves V6 and V7, the eleventh, twelfth and thirteen valves V11, V12 and V13 are opened and the fourth and fifth valves V4 and V5 are opened to allow the district heating water to flow therethrough to block the inflow of hot water into the auxiliary regenerator 122 and circulate the absorption liquid.

The district heating water of the main district heating water line 10 is supplied to the hot water heat exchanger 70 and is heat-exchanged with the hot water of the hot water supply line 60 to supply hot water.

Referring to FIG. 4, the main system operation of the heating cycle will be described below.

At this time, only the main system operates in the heating cycle, and the auxiliary system is stopped.

The third valve V3, the seventh valve V7 and the ninth and tenth valves V9 and V10 are opened and the fourth and fifth valves V4 and V5 are connected to the auxiliary regenerator 122 The hot water in the hot and cold water line 30 flows into the auxiliary regenerator 122 through the heating water line 40 and the heating absorbent pump 50 is operated to discharge the auxiliary regenerator 122 To the first regenerator (121) of the second shell (120).

In this state, when the diluted absorption liquid is sprayed at the upper part of the first regenerator 121 through which the district heating water flows at 115 ° C, the absorption liquid (rich liquid) is heated by the district heating water and the district heating water is recovered to 55 ° C .

When the high-temperature thick absorbing liquid is sprayed from the upper part of the auxiliary regenerator 122 through which the heating water flows at 50 ° C, the heating water is heated to 60 ° C by absorbing the refrigerant vapor generated in the first regenerator 121, To the cold / hot water line (30) to perform heating in the building. This process is repeated and heating is done.

The diluted absorption liquid (the diluted liquid) is dispersed to the upper portion of the auxiliary regenerator 122 through the pump 101 to absorb the refrigerant vapor generated in the first regenerator 121 to heat the heating water.

This process is repeated and heating is performed.

The district heating water of the main district heating water line 10 is supplied to the hot water heat exchanger 70 and is heat-exchanged with the hot water of the hot water supply line 60 to supply hot water.

On the other hand, when switching from the cooling mode to the heating mode, only the sixth valve V6 and the ninth valve V9 are opened to fill the absorption liquid with the first regenerator 121 and the auxiliary regenerator 122 of the second shell 120 And the heating absorbing liquid pump 50 is operated to fill a certain level of absorbing liquid.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

10: Main district heating water line 20: Quarter district heating water line
30: cold / hot water line 40: heating water line
50: Heat absorbing liquid pump 60: Hot water supply line
70: Hot water heat exchanger V1 to V13: 1st to 13th valves

Claims (6)

A first shell having an evaporator, an absorber, and an absorption heat exchanger; A second shell having a first regenerator, an auxiliary regenerator and a condenser; A third shell having a second regenerator and a secondary absorber; A high temperature heat exchanger; A low temperature heat exchanger; An auxiliary heat exchanger; A plurality of pumps and a coolant line connecting them; And an absorption liquid line having a heating absorbent pump for circulating the absorbing liquid discharged from the auxiliary regenerator to the first regenerator, the low temperature water two stage absorption refrigerator comprising:
A second regenerator disposed in the first regenerator of the second shell and inside the auxiliary regenerator for heat-exchanging the district heating hot water with the absorbing solution dropped by the first regenerator and the auxiliary regenerator, A main district heating water line for discharging the main heating water line to the outside;
A branch district heating water line branching between the first regenerator and the auxiliary regenerator of the second shell;
A cold / hot water line installed in association with the inside of the evaporator of the first shell for exchanging hot water required for heating with an absorbing solution dropped in the auxiliary regenerator of the second shell;
And the other end is connected to the main region heating water line at the rear end of the first regenerator of the second shell and the rear end of the auxiliary regenerator to connect hot water flowing through the hot / A heating water line for heating and discharging the heated water to the cold / hot water line;
The main district heating water line, the branch district heating water line, the cold / hot water line, and the heating water line so as to vary the flow rate, thereby discharging the district heating water through the second and third shells through the main district heating water line So that the absorption liquid and the cold water are circulated through the absorption liquid line and the cold / hot water line, the district heating water is discharged through the first regenerator of the second shell through the branch district heating water line during heating, A valve unit having a two-way valve and a three-way valve, the valve being provided with a heating water line through a cold / hot water line for heating and circulating the absorption liquid only in the second shell;
A hot water supply line into which hot water for hot water is introduced and discharged; And
And a hot water heat exchanger for receiving district heating water from the main district heating water line and discharging hot water heated by heat exchange with hot water supplied from the hot water supply line to the hot water supply line,
The valve unit includes:
First and second valves installed in the cold / hot water line for supplying and blocking cold water to the evaporator of the first shell;
A third valve installed in the branch district heating water line to supply and block the district heating water;
A fourth and a fifth valve installed at a connection portion between the main district heating water line and the heating water line to supply district heating water or hot water to the auxiliary regenerator; And
The absorption liquid is circulated through the first regenerator of the second shell and the auxiliary regenerator of the second shell and the auxiliary regenerator of the second shell, Valve,
When switching from cooling to heating, only the sixth valve and the ninth valve are opened so as to fill the absorbent with the first regenerator and the auxiliary regenerator of the second shell, the heating absorbent pump is operated to fill the absorbent at a certain level, Wherein the low-temperature water and the low-temperature water are supplied to the two-stage absorption refrigerator. delete delete delete delete delete
KR1020150065155A 2015-05-11 2015-05-11 Heating and hot water supply chiller of low temperature water two-stage absorption KR101652484B1 (en)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
KR101851230B1 (en) * 2017-04-19 2018-04-23 (주)월드이엔씨 High efficiency absorption type heat pump system with increasing function for utilization rate from waste heat
KR101947679B1 (en) * 2018-08-20 2019-02-14 (주)월드에너지 High-efficient two stage absorption refrigerator of low temperature water with increased efficiency by two stage separated heat exchange method
KR102098651B1 (en) 2019-07-25 2020-04-10 주식회사 프로이천 Film type probe apparatus
DE112017006707B4 (en) 2017-02-16 2023-10-19 Hitachi-Johnson Controls Air Conditioning, Inc. Absorption chiller

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KR100895885B1 (en) 2008-10-31 2009-05-04 (주) 월드에너지 Low temperature hot water driven single effect double lift absorption refrigerator with improved heat exchanger arrangement
KR20110014376A (en) * 2009-08-05 2011-02-11 주식회사 신성엔지니어링 (low temperature water two-stage absorbtion typerefrigerator
KR101347582B1 (en) * 2013-11-20 2014-01-03 (주)월드이엔씨 Low temperature water two-stage absorbtion type refrigerator and heater which can heating water
KR101377690B1 (en) 2012-11-14 2014-03-26 (주) 월드에너지 High efficiency low temperature hot water driven two-lift type absorbtion refrigerator using heat exchanger of absorbed heat

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KR100895885B1 (en) 2008-10-31 2009-05-04 (주) 월드에너지 Low temperature hot water driven single effect double lift absorption refrigerator with improved heat exchanger arrangement
KR20110014376A (en) * 2009-08-05 2011-02-11 주식회사 신성엔지니어링 (low temperature water two-stage absorbtion typerefrigerator
KR101377690B1 (en) 2012-11-14 2014-03-26 (주) 월드에너지 High efficiency low temperature hot water driven two-lift type absorbtion refrigerator using heat exchanger of absorbed heat
KR101347582B1 (en) * 2013-11-20 2014-01-03 (주)월드이엔씨 Low temperature water two-stage absorbtion type refrigerator and heater which can heating water

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112017006707B4 (en) 2017-02-16 2023-10-19 Hitachi-Johnson Controls Air Conditioning, Inc. Absorption chiller
KR101851230B1 (en) * 2017-04-19 2018-04-23 (주)월드이엔씨 High efficiency absorption type heat pump system with increasing function for utilization rate from waste heat
WO2018194221A1 (en) * 2017-04-19 2018-10-25 (주)월드이엔씨 High-efficiency absorption heat pump system having increased utilization rate of waste heat source
KR101947679B1 (en) * 2018-08-20 2019-02-14 (주)월드에너지 High-efficient two stage absorption refrigerator of low temperature water with increased efficiency by two stage separated heat exchange method
KR102098651B1 (en) 2019-07-25 2020-04-10 주식회사 프로이천 Film type probe apparatus

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