KR101729891B1 - Absorption refigerating regenerator - Google Patents

Abstract

The present invention relates to an absorption type water cooler and heater apparatus. According to the present invention, the absorption type water cooler and heater apparatus includes: a first heat exchanger which condenses a gaseous refrigerant into a liquid refrigerant through a heat exchange operation between the gaseous refrigerant and hot water; an absorber which includes a medium liquid therein, selectively flows the condensed liquid refrigerant therein from the first heat exchanger, and mixes the inflowing liquid refrigerant and medium liquid to generate a dilution liquid; a regenerator which receives the generated dilution liquid from the absorber, separates received dilution liquid into the gaseous refrigerant and the medium liquid, and selectively flows the separated gaseous refrigerant into the first heat exchanger selectively, and selectively flows the separated medium liquid into the absorber; an extraction device which is connected to the absorber and receives a part of the dilution liquid in the absorber; a concentration rate sensing unit which is arranged on the extraction device to measure the concentration rate of the medium liquid in the extraction device; an extraction line which is extended to the absorber from the extraction device in order to flow the medium liquid in the extraction device back into the absorber; and an extraction valve which is arranged on the extraction device to selectively close the extraction line. When the concentration rate of the medium liquid measured by the concentration rate sensing unit is equal to or greater than a preset concentration rate, the extraction valve closes the extraction line.

Description

ABSORPTION REFIGERATING REGENERATOR

The present invention relates to an absorption type cold water heater.

The absorption-type cold / hot water heater includes a first heat exchanger, an absorber, a second heat exchanger and a regenerator, and is capable of performing cooling or heating.

Specifically, unlike a turbo-type refrigerator in which the compressor is used to mechanically compress a refrigerant and perform cooling or heating using compressed refrigerant, the absorption-type cold / hot water heater absorbs the refrigerant in the absorber and absorbs the refrigerant. The refrigerant is evaporated while passing through the first heat exchanger, and the refrigerant evaporated in the second heat exchanger is condensed, so that cooling or heating can be performed.

In particular, in the case of the absorption type cold water heater, the cooling operation can be performed as the refrigerant evaporates into the gaseous refrigerant while the refrigerant undergoes heat exchange with the cold water in the first heat exchanger. On the other hand, as the gaseous refrigerant in the first heat exchanger is heat- can do.

The invention for a conventional absorption chiller is described in the following document.

[Prior Art Literature]

[Patent Literature]

Patent application No. 10-2011-000896 (entitled " Absorption chiller having a cooling water line, public date: Jul. 13, 2012)

In the case of such a conventional absorption type cold / hot water generating machine, a configuration is disclosed in which a refrigerant absorbed in an absorption liquid is evaporated and condensed in the course of the absorption liquid flowing through an absorber, a high temperature regenerator, and a low temperature regenerator with a double effect absorption type cold water heater, have.

When the gaseous refrigerant generated by the regeneration in the high-temperature regenerator flows into the first heat exchanger through the absorber, the gaseous refrigerant is condensed as heat is exchanged with the hot water passing through the inside of the first heat exchanger, The heating operation is carried out in such a manner as to increase.

When the conventional absorption type cold / hot water heater is heated, the absorption liquid used in the heating cycle is a lithium bromide (LiBr) aqueous solution. The lithium bromide concentration in the lithium bromide aqueous solution used in the heating cycle is as high as 53 to 57% on average. The lithium bromide aqueous solution is characterized in that the higher the concentration of lithium bromide, the lower the saturation pressure and the higher the boiling point.

Therefore, there is a problem that the output of the burner used for heating the lithium bromide aqueous solution to separate the lithium bromide aqueous solution and the refrigerant from the high temperature regenerator must be high.

Further, as the amount of energy used for increasing the output of the burner is increased, there is a problem of wasting energy and lowering the heat exchange efficiency with respect to cost. There is a problem that a large amount of energy is supplied to the burner to be used.

The absorption refrigerator according to the embodiment of the present invention aims at lowering the boiling point of lithium bromide by lowering the concentration of lithium bromide in the absorption liquid used in the heating cycle and thereby reducing the energy used in the high temperature regenerator.

It is another object of the present invention to provide an absorption type cold and hot water generating machine capable of obtaining a high heat exchange efficiency with respect to the same energy by reducing energy used in a high temperature regenerator.

The absorption refrigerator according to an embodiment of the present invention includes a first heat exchanger for providing hot water used in a heating cycle as the gaseous refrigerant is condensed into liquid refrigerant through heat exchange between gaseous refrigerant and hot water, An absorber which contains a medium-containing liquid therein and in which liquid refrigerant condensed from the first heat exchanger can be mixed with the medium-rich liquid; A regenerator into which the diluted solution generated from the absorber flows and separates the diluted solution into a medium liquid and gaseous refrigerant; And an additional device connected to the absorber to which a part of the intermediate liquid in the absorber flows.

The adsorption-type cold / hot water generating machine may further include a supplementary line extending from the additional device to the absorber for storing a part of the medium-added liquid in the additional device, ; And a bleed valve for selectively opening and closing the additional line.

The absorption type cold and hot water generator may further include a concentration sensor disposed in the additional device and sensing the concentration of the heavy liquid in the additional device in order to store a medium or higher concentration liquid in the additional device.

In this case, when the concentration of the intermediate liquid measured by the concentration sensing unit is equal to or higher than the preset concentration, the extraction valve can close the additional line, and the absorbent solution having the predetermined concentration or higher is stored in the inside of the additional device, The concentration of the absorption liquid used in the heating mode cycle may be lower than the concentration of the absorption liquid used in the conventional absorber.

Particularly, when the extraction valve closes the additional line, since the heavy liquid in the additional device is stored in the additional device without being re-introduced into the absorber, the concentration of the absorption liquid remaining in the absorber is reduced The concentration of the absorption liquid used in the heating mode cycle may be lower than the concentration of the absorption liquid used in the conventional absorber.

The absorption chiller may further include a temperature sensing unit for sensing the temperature of the regenerator so as to selectively provide a medium-rich liquid to the absorber in the regenerator according to the temperature of the regenerator.

Particularly, when the temperature sensing unit senses the temperature of the regenerator and the sensing temperature is higher than the set temperature, the absorber provides the medium-rich liquid, so that a sufficient amount of the gaseous refrigerant used for heating from the diluent introduced into the regenerator, And has the effect of forming a liquid.

The absorption type cold and hot water generating machine includes an absorption liquid line extending from the regenerator to the absorber and providing a medium in which the heavy liquid in the regenerator flows into the absorber, an absorption liquid line disposed in the absorption liquid line, And when the detection temperature of the temperature sensing unit is equal to or higher than the set temperature, the middle liquid in the regenerator flows into the absorber as the absorption liquid valve opens the absorption liquid line.

In this case, the set temperature may be 150 ° C or higher, because when the temperature of the regenerator rises to 150 ° C or higher, a sufficient amount of gaseous refrigerant and medium liquid to be used in the heating mode is formed.

 In addition, when the water level detected by the water level sensing unit is equal to or higher than a set water level in a state where the extraction valve closes the additional line, the gaseous refrigerant separated from the regenerator flows into the absorber, The refrigerant flows into the first heat exchanger and has an effect of exchanging heat with hot water in the first heat exchanger.

In this case, since the absorber and the first heat exchanger are provided in one shell, there is no problem that the temperature of the gaseous refrigerant drops during the movement of the gaseous refrigerant introduced into the absorber to the first heat exchanger.

The absorption type cold and hot water generating machine includes a refrigerant line extending from the regenerator to the absorber and providing a flow path through which gaseous refrigerant in the regenerator flows to the absorber; And the gaseous refrigerant generated in the regenerator flows into the absorber as the refrigerant valve opens the refrigerant line when the sensed water level of the water level sensing unit is equal to or higher than the set water level. I have.

When the water level detected by the water level sensing unit is equal to or higher than a predetermined water level in the state where the additional valve is closed by the extraction valve, the gaseous refrigerant in the first heat exchanger undergoes heat exchange, The refrigerant can be introduced into the absorber, and thus the circulation of the refrigerant used in the heating mode cycle can be effected.

The absorption chiller and heater may further include a mixing line extending from the first heat exchanger to the absorber and providing a flow path through which the liquid refrigerant condensed in the first heat exchanger flows to the absorber, And the liquid refrigerant in the first heat exchanger is discharged to the outside through the mixing valve when the sensed water level of the water level sensing unit is equal to or higher than the set water level, And has an effect of being introduced into the absorber.

In addition, the absorption liquid used in the heating mode of the absorption type cold and hot water generator may be a generally used lithium bromide (LiBr) aqueous solution, and the set concentration may be 55% or more. This is because the concentration of the aqueous solution of lithium bromide used in the heating mode of the conventional absorption type cold and hot water generator generally has a concentration of 55% or more, so that the concentration of the lithium bromide aqueous solution used in the heating mode cycle after storing the lithium bromide aqueous solution in the addition device To less than 55%.

According to the absorption type cold / hot water generating machine according to the embodiment of the present invention having the above-described structure, the following effects can be obtained.

First, the use of the absorbent having a lower lithium bromide concentration than the absorbent used in the conventional absorption type cold / hot water generating machine has an effect of lowering the boiling point of the absorbent used in the heating mode.

Secondly, as the boiling point of the absorption liquid used in the heating mode is lowered, there is an effect that the absorbent and the refrigerant can be separated from the burner used in the high temperature regenerator even at a lower output than the conventional one.

Third, since the burner operates at a low output, the energy used in the burner is saved, and the heat exchange efficiency can be further increased by using the same energy as in the prior art.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the construction of an absorption type cold / hot water generating machine according to an embodiment of the present invention. Fig.
2 is a view showing a cooling mode cycle of an absorption type cold water heater according to an embodiment of the present invention.
3 shows a second heating mode cycle of an absorption chiller according to an embodiment of the present invention.
4 illustrates a third heating mode cycle of an absorption chiller according to an embodiment of the present invention.
5 illustrates a fourth heating mode cycle of an absorption chiller according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the structures and methods described herein.

1 is a view showing the construction of an absorption type cold / hot water generating machine according to an embodiment of the present invention.

1, an absorption type cold water heater according to the present invention includes a first heat exchanger 10, an absorber 20, a high temperature regenerator 30, a low temperature regenerator 40 and a second heat exchanger 50, ).

The absorption liquid used in the absorption chiller according to the embodiment of the present invention may be a lithium bromide (LiBr) solution, and may be largely separated into a dilute solution, a heavy liquid and a concentrated liquid depending on the concentration.

The absorption type cold and hot water generator is configured such that the first heat exchanger 10 and the absorber 20 are connected to each other through a first shell (not shown) which is one shell so that refrigerant evaporated in the first heat exchanger 10 can easily flow into the absorber 20, 1). In the first shell 1, a side wall 2 for partitioning an evaporation region where the refrigerant is evaporated and an absorption region where the refrigerant is absorbed by the concentrated solution, and a side wall 2 disposed above the side wall 2, The first eliminator 3 can be disposed so that the gaseous refrigerant of the first refrigerant can be moved to the absorption region.

The first heat exchanger 10 may further include a refrigerant injector 11 for injecting the refrigerant into the evaporation area. In the first heat exchanger 10, the gaseous refrigerant injected by the refrigerant injector 11 and the cold / hot water line to be described later heat exchange with each other to generate cold / hot water required for cooling or heating. When the cold water flows into the cold / hot water line, the refrigerant injected from the refrigerant injector 11 undergoes heat exchange with the cold water of the cold / hot water line and is converted into a gaseous refrigerant. The gaseous refrigerant passes through the first eliminator 3 To the absorption region.

The first heat exchanger 10 further includes a pumping passage 12 for guiding the liquid refrigerant dropped to a lower portion of the evaporation region to the refrigerant injector 11 and a refrigerant pump 13 installed in the pumping passage 12 can do. The liquid refrigerant can flow through the pumping passage 12 and flow to the refrigerant injector 11 by the operation of the refrigerant pump 13. [

The absorber 20 may include an absorption liquid injector 21 for absorbing gaseous refrigerant evaporated in the first heat exchanger 10 into an absorption liquid, and spraying an absorption liquid to the absorption region. The gaseous refrigerant transferred from the evaporation region to the absorption region can be absorbed by the absorption liquid injected from the absorption liquid injector 21.

The liquid refrigerant in the first heat exchanger 10 may flow to the lower portion of the absorber 20 in the side wall 2 partitioning the first heat exchanger 10 and the absorber 20 A mixing line 22 may be disposed. In addition, the mixing line 22 may be provided with a first valve 23 for selectively opening and closing the mixing line 22. When the gaseous refrigerant is condensed into the liquid refrigerant by the heat exchange between the gaseous refrigerant of the first heat exchanger 10 and the hot water flowing through the cold / hot water line, the condensed liquid refrigerant is introduced into the absorber 20).

The first regenerator 30 is configured to receive the diluent solution absorbing the gaseous refrigerant from the absorber 20 and to regenerate the diluent solution to generate the intermediate solution. The first regenerator (30) can heat the diluent supplied from the absorber (20) and separate the refrigerant mixed in the diluent into gaseous refrigerant, thereby making the diluent liquid an intermediate liquid.

The first regenerator 30 may include a burner 31 for heating the diluting solution and a gaseous refrigerant outlet 32 for flowing gaseous refrigerant separated by the burner 31, have.

The second regenerator 40 is configured to receive the medium regeneration solution firstly regenerated from the first regenerator 30 and regenerate the medium regeneration solution to generate a concentrated solution. The second regenerator (40) exchanges the intermediate liquid supplied from the first regenerator (30) with the gaseous refrigerant separated from the first regenerator (30) to separate the refrigerant mixed in the intermediate liquid, Concentrated solution.

The second heat exchanger 50 condenses the separated gaseous refrigerant in the process of generating the concentrated solution in the second regenerator 40 and provides a space in which the gaseous refrigerant generated from the first regenerator 30 flows do.

The absorption refrigerator and the second heat exchanger (50) are arranged such that the gaseous refrigerant separated by the secondary regeneration in the second regenerator (40) can easily flow into the second heat exchanger (50) (50) may be provided in the second shell (4), which is a shell. Inside the second shell 4, there are provided a side wall 5 for partitioning a regeneration region in which the intermediate liquid is secondarily regenerated with the concentrated solution and a condensation region in which the gaseous refrigerant is condensed, The second eliminator 6 can be disposed so that the gaseous refrigerant generated in the first condenser can be moved to the condensation region.

The addition device 60 is connected to the absorber 20 and the second heat exchanger 40 and is a means for discharging the non-condensed gas generated inside the absorption type cold / hot water heater to the outside. In detail, the non-condensing gas in the absorber 20 and the second heat exchanger 40 flows into the addition device 60, and the dilution solution of the absorber 20 can be introduced. In addition, the diluted solution introduced into the additional device 60 can absorb the gaseous refrigerant mixed with the non-condensed gas, and the diluted solution absorbing the gaseous refrigerant can be re-introduced into the absorber 20 again.

In addition, the concentration sensor 61 capable of measuring the concentration of the absorbing liquid may be disposed in the addition device 60. The concentration sensing unit 61 may be a temperature and pressure sensor, or may be a means capable of measuring the density. The configuration of the concentration sensing unit 61 is not limited as long as the concentration of the absorption liquid in the addition device can be measured.

The absorption chiller according to the embodiment of the present invention may further include a cold / hot water line, an absorption liquid line, a cooling water line, a refrigerant line, and a supplemental line.

The cold / hot water line is a line through which the cold water flows in the cooling operation and the hot water flows in the heating operation. The cold / hot water line includes a first cold / hot water line 101 through which cold water or hot water flows from the outside, a second cold / hot water line 101 extending from the outlet side of the first cold / hot water line 101, Hot water line 102 and a third cold / hot water line 103 extending from the outlet side of the second cold / hot water line 102 and discharging cold or hot water heat-exchanged to the outside.

The absorber line includes a first absorber line 111 extending from the absorber 20 to the first absorber 20 and having a dilution solution inside the absorber 20 flowing to the first absorber 30, A second absorbent liquid line 112 connected to the first regenerator 30 for flowing a medium recovered from the first regenerator 30 to the first regenerator 30, A third branching portion 113 extending from the first branching portion 113 to the second regenerator 40 and capable of flowing a medium liquid into the second regenerator 40, (115) extending from the first branching part (113) to the absorber and selectively introducing the intermediate liquid into the absorber (20), and a second absorption liquid line Includes a fifth absorbent fluid line (116) extending into the absorber (20) and introducing the concentrated solution within the second regenerator (40) into the absorber .

The first absorption liquid line 111 may include a first absorption liquid pump 117 for regulating the amount of the dilute solution flowing into the first regenerator 30 from the absorber 20.

The fourth absorption liquid line 115 includes a second valve for selectively opening and closing the fourth absorption liquid line 115 for selectively introducing the intermediate liquid into the absorber 20 from the first branching unit 113, (118).

The fifth absorption liquid line 116 may include a second absorption liquid pump for regulating the amount of the concentrated solution flowing into the absorber 20 from the second regenerator 40.

The cooling water line includes a first cooling water line 121 through which cooling water flows from the outside, a second cooling water line 121 connected to the first cooling water line 121 and disposed inside the absorber 20, A second cooling water line 122 for absorbing heat generated when the solution absorbs the gaseous refrigerant, a third cooling water line 123 extending from the second cooling water line 122 to the second heat exchanger, A fourth cooling water line 124 connected to the line 123 and disposed inside the second heat exchanger for heat exchange with the gaseous refrigerant in the second heat exchanger and connected to the fourth cooling water line 124 for heat exchange And a fifth cooling water line 125 for discharging the cooled cooling water to the outside.

The refrigerant line extends from the gaseous refrigerant outlet 32 of the first regenerator 30 to the second regenerator 40 and is connected to the first refrigerant flowing through the gaseous refrigerant flowing from the first regenerator 30, A second branch portion 132 connected to the first refrigerant line 131 and branched from the gaseous refrigerant flowing through the first refrigerant line 131 and a second branch portion 132 branched from the second branch portion 132, A second refrigerant line 133 extending to the second regenerator and having a gaseous refrigerant flow to the second regenerator, a second refrigerant line 133 connected to the second refrigerant line 133 and disposed in the second regenerator 40, A third refrigerant line 134 through which the gaseous refrigerant undergoes heat exchange with the intermediate liquid in the second regenerator 40 and the third refrigerant line 134 extending from the third refrigerant line 134 to the second heat exchanger 50, A fourth refrigerant line 135 for supplying refrigerant that has been heat-exchanged in the second regenerator 40 and condensed to the second heat exchanger 50, The refrigerant condensed from the second heat exchanger (50) and the refrigerant introduced from the third refrigerant line (134), which extend from the ventilation (50) to the first heat exchanger (10) (Not shown).

The refrigerant line extends from the second branch 132 to the absorber and is connected to a sixth refrigerant line 137 for selectively introducing the gaseous refrigerant flowing through the first refrigerant line 131 to the absorber ). ≪ / RTI > In this case, the sixth refrigerant line 137 may include a third valve 138 for controlling the flow of the gaseous refrigerant flowing into the absorber. That is, the third valve 138 may open or close the sixth refrigerant line 137 through an on / off operation.
The first refrigerant line 131 and the second refrigerant line 133 are called main refrigerant lines 131 and 133 and the sixth refrigerant line 137 is called a secondary refrigerant line 137. [ .

In detail, the gaseous refrigerant separated from the first regenerator may flow into the first refrigerant line 131, the second refrigerant line 133, and the sixth refrigerant line 137, 134, the gaseous refrigerant and the liquid refrigerant may coexist as the gaseous refrigerant undergoes heat exchange with the intermediate liquid, and the gaseous refrigerant and the liquid refrigerant may flow into the fourth refrigerant line 135 and the fifth refrigerant line 136, .

Wherein the additional line extends from the second heat exchanger or the absorber to the additional device and includes a first additional line (141) into which the non-condensable gas in the absorption type cold / hot water heater flows into the additional device, A second addition line (142) extending from the absorber line (111) to the addition device and into which the diluent solution is introduced, and a dilute solution (142) extending from the addition device to the absorber And a third additional line 143 that is re-introduced into the absorber.

The third additional line 143 may include a fourth valve 144 for selectively regulating the flow of the absorption liquid flowing into the absorber from the additional device.

The absorption chiller of the present invention may further include a low temperature heat exchanger, a high temperature heat exchanger and a drain heat exchanger.

The low temperature heat exchanger is disposed in the first absorbent liquid line 111 and is disposed so as to pass through the fifth absorbent liquid line 116 so that the dilute solution flowing through the first absorbent liquid line 111 and the dilute solution flowing through the fifth absorbent liquid line 116 Is a means for heat exchange.

The high-temperature heat exchanger is disposed in the third absorption liquid line (114), and is disposed so as to pass through the first absorption liquid line (111), and the high-temperature heat exchanger And the intermediate liquid flowing through the third absorption liquid line 114 is heat-exchanged.

The drain heat exchanger is disposed in the fourth refrigerant line 135. A part of the dilution solution in the dilution solution flowing through the first absorption liquid line 111 and the liquid refrigerant flowing in the fourth refrigerant line 135 can be heat- It is a means. In detail, the first absorption liquid line 111 may include a bypass flow path for bypassing a part of the dilution solution flowing through the low temperature heat exchanger to the inlet side of the first absorption liquid line 111.

In this case, since the bypass flow path passes through the drain heat exchanger, the solution in the bypass can be heat-exchanged with the liquid refrigerant in the fourth refrigerant line 135.

The operation mode of the absorption type cold water heater according to the embodiment of the present invention will be described below. The operation mode of the absorption type cold / hot water generator can be classified into a cooling operation and a heating operation.

First, the cooling operation of the absorption type cold / hot water heater will be described. 2 is a view showing a cooling mode cycle of the absorption type cold and hot water generating machine according to the embodiment of the present invention.

2, when cold water flows into the first cold / hot water line 101 and cold water flows into the second cold / hot water line 102, the refrigerant injector 11 disposed in the first heat exchanger 10, The liquid refrigerant is sprayed. As the liquid refrigerant injected from the refrigerant injector 11 and the cold water flowing through the second cold / hot water line 102 are heat-exchanged, the cold water is cooled and discharged through the third cold / hot water pipe, It changes. The evaporated gaseous refrigerant is transferred to the absorber (20) through the first eliminator (3).

In this case, since the first valve is turned off to close the mixing line, the liquid refrigerant in the first heat exchanger does not flow to the absorber.

When the gaseous coolant flows into the absorber 20, the concentrated solution is injected in the absorber 20 of the absorber 20, so that the concentrated solution absorbs gaseous refrigerant and changes into a dilute solution state. Further, the heat generated in the process of absorbing the gaseous refrigerant can be absorbed by the cooling water flowing through the second cooling water line 122.

The supercritical fluid having absorbed the gaseous refrigerant in the absorber 20 may be introduced into the first regenerator 30 through the low-temperature heat exchanger and the high-temperature heat exchanger through the first absorption liquid line 111.

In the first regenerator (30), the diluent is heated by the burner (31) to become a medium liquid, and the gaseous refrigerant separated from the diluent can flow to the gaseous coolant outlet (32).

The heavy liquid of the first regenerator (30) can flow into the second absorption liquid line (112). In this case, since the second valve 118 is turned off to close the fourth absorption liquid line 115, the intermediate liquid flowing in the second absorption liquid line 112 flows through the first branching part 113 and / And may be introduced into the second regenerator through the third absorption liquid line 114.

The gaseous refrigerant flowing into the gaseous refrigerant outlet 32 may flow to the first refrigerant line 131. In this case, since the third valve 138 is turned off to close the sixth refrigerant line 137, the gaseous refrigerant flowing through the first refrigerant line 131 flows through the second branch 132 and And may be introduced into the third refrigerant line 134 through the second refrigerant line 133.

In the second regenerator (40), heat exchange may take place between the intermediate liquid and the gaseous refrigerant flowing into the third refrigerant line (134). In the second regenerator (40), the intermediate liquid is secondarily regenerated and changed into a concentrated solution, and the gaseous refrigerant flowing in the third refrigerant line (134) may be changed into liquid refrigerant. The gaseous refrigerant generated during the secondary regeneration of the intermediate liquid can be introduced into the second heat exchanger (50) through the second eliminator (6).

The liquid refrigerant heat-exchanged in the third refrigerant line 134 may be introduced into the second heat exchanger through the fourth refrigerant line 135.

In addition, the concentrated solution changed in the second regenerator 40 may be introduced into the absorber injector of the absorber through the fifth absorber line 116. [

The gaseous refrigerant introduced through the second eliminator 6 in the second heat exchanger 50 can be condensed. The gaseous refrigerant flowing into the second heat exchanger (50) and the cooling water flowing through the fourth cooling water line (124) disposed in the second heat exchanger (50) undergo heat exchange and the gaseous refrigerant is condensed into liquid refrigerant , And the cooling water may be discharged to the outside through the fifth cooling water line (125).

The liquid refrigerant condensed in the second heat exchanger (50) and the liquid refrigerant introduced into the second heat exchanger through the fourth refrigerant line (135) flow through the fifth refrigerant line (136) (10). ≪ / RTI >

Further, the addition device 60 operates normally. In detail, in the addition device 60, a non-condensed gas is introduced into the first additional recording line 141, and a dilution solution in the absorber 20 is introduced into the second additional recording line 142. The gaseous refrigerant contained in the introduced noncondensing gas is absorbed by the incoming dilution solution, and the noncondensing gas can be discharged to the outside.

In addition, since the fourth valve 144 is turned on to open the third additional line 143, the diluent that has absorbed the gaseous refrigerant in the addition device can be reintroduced into the absorber.

That is, the first valve, the second valve 118 and the third valve 138 are turned off and the fourth valve 144 is turned on in the cooling operation mode of the absorption type cold and hot water supply apparatus according to the embodiment of the present invention can do.

Next, the heating operation of the absorption type cold / hot water heater will be described. The heating operation can largely be performed by the first heating operation, the second heating operation, the third heating operation and the fourth heating operation.

The first heating operation of the absorption type cold and hot water heater operates in the same manner as the cooling operation, and a repeated description thereof will be omitted.

FIG. 3 is a view showing a second heating mode cycle of the absorption type cold and hot water generating machine according to an embodiment of the present invention, FIG. 4 is a view showing a third heating mode cycle of the absorption type cold water heater according to the embodiment of the present invention, Is a view showing a fourth heating mode cycle of the absorption type cold and hot water heater according to the embodiment of the present invention.

3 to 5, when the temperature of the first regenerator 30 becomes equal to or higher than the set temperature while the absorption type cold and hot water heater is in the first heating operation, the absorption type cold and hot water heater performs the second heating operation . When the absorption type cold / hot water heater is in the second heating operation, the second valve 118 may be turned on to open the fifth absorption liquid line 116. In this case, the set temperature may be 130 to 170 캜, and preferably 150 캜. However, the set temperature can be changed by the manager in accordance with the temperature of the hot water generated in the absorption type cold / hot water heater. In this case, a temperature sensing unit may be disposed in the first regenerator 30 to measure the temperature of the first regenerator 30, and the second valve 118 Can be performed. When the fifth absorbent fluid line 116 is opened, the medium liquid generated from the first regenerator may flow into the fifth absorbent fluid line 116 through the second absorbent fluid line 112. The heavy liquid introduced into the fifth absorption liquid line 116 may be introduced into the absorber.

In this case, the intermediate liquid introduced into the absorber may be mixed with the conventional diluent, and the mixed absorbent may be introduced into the addition device. That is, the concentration of the absorption liquid flowing into the additional device during the second heating operation may be higher than the concentration of the absorption liquid flowing into the additional device during the cooling operation.

When the concentration of the absorption liquid in the additional device becomes equal to or higher than the set concentration in the second heating operation of the absorption type cold and hot water generator, the absorption type cold and hot water generator can perform the third heating operation. The set concentration may be 55%. In this case, the concentration sensing unit of the addition device can measure the concentration of the absorption liquid in the addition device. When the absorption type cold / hot water heater is in the third heating operation, the fourth valve 144 may be turned off to close the third additional line 143. Accordingly, since the third additional line 143 is closed, the absorbed liquid introduced into the additional device can be stored in the additional device without being re-introduced into the absorber.

That is, as the absorbing liquid having a high concentration of lithium bromide is introduced into the adding device, the absorbing liquid remaining in the entire system may have a lower concentration than that of the absorbing liquid used in the conventional heating operation.

In a state where the absorption type cold and hot water heater is in the third heating operation, when the absorption liquid flowing into the addition device is stored in the addition device in a predetermined level or more, the absorption type cold and hot water generator can perform the fourth heating operation.

The fourth heating operation of the absorption chiller will be described below.

When the absorption type cold / hot water heater performs the fourth heating operation, the supply of the cooling water flowing in the cooling water line is stopped, and hot water can be supplied to the cold / hot water line.

Hot water supplied through the first cold / hot water line 101 may flow to the second cold / hot water line 102. When the hot water flows into the second cold / hot water line 102, the gaseous refrigerant in the first heat exchanger and the hot water flowing in the second cold / hot water line 102 are heat-exchanged, 103, and the gaseous refrigerant is condensed into liquid refrigerant.

In this case, the first valve 23 is turned on so that the mixing line 22 connecting the first heat exchanger 10 and the absorber 20 can be opened. The liquid refrigerant condensed in the first heat exchanger (10) may be introduced into the absorber (20) through the mixing line. That is, since the gaseous refrigerant is not formed in the first heat exchanger 10 in the heating operation state, the refrigerant can not flow to the absorber 20 through the first eliminator.

The liquid refrigerant flowing into the absorber 20 may be mixed with the absorption liquid present in the absorber 20 to become a dilute solution state. In this case, since the absorbed liquid exceeding the predetermined concentration is stored in the addition device 60 through the first heating operation to the third heating operation, the average concentration of the absorbing liquid used in the fourth heating operation is used for cooling operation Lt; RTI ID = 0.0 > absorbent. ≪ / RTI >

The diluent solution absorbing the liquid refrigerant in the absorber 20 can be introduced into the first regenerator 30 through the first absorber liquid line 111. The gaseous refrigerant flowing into the first regenerator 30 is heated by the burner 31 to be changed into a medium liquid, and the gaseous refrigerant separated from the dilute solution can flow to the gaseous refrigerant outlet 32.

In this case, since the diluent solution flowing into the first regenerator 30 is stored in the extractor 60 at a high concentration, it is possible to have a concentration lower than the concentration of the absorbing solution flowing in the conventional heating operation have. Accordingly, the saturation pressure of the dilution solution flowing into the first regenerator 30 is increased, and the boiling point is lowered. In the case of an aqueous solution of lithium bromide (LiBr), which is an absorption liquid used in an absorption type cold / hot water heater, the higher the concentration, the lower the saturation pressure and hence the boiling point. Therefore, the regenerating ability of the diluting solution in the first regenerator 30 can be greatly improved. That is, separation of the diluting solution and the gaseous refrigerant in the first regenerator 30 can be more effectively achieved than in the prior art, and therefore, a large amount of gaseous refrigerant can be generated as compared with the conventional absorption type cold water heater.

The heavy liquid of the first regenerator (30) can flow into the second absorption liquid line (112). In this case, the second valve 118 is turned on and the fourth absorption liquid line 115 can be opened. Accordingly, the intermediate liquid flowing through the second absorption liquid line 112 can be introduced into the absorber 20 through the first branch portion 113 and the fourth absorption liquid line 115. In this case, since the pressure inside the absorber 20 is the lowest among the structures of the absorption type cold and hot water generator, the medium-liquid can be introduced into the absorber 20 without flowing into the second regenerator 40.

The gaseous refrigerant flowing into the gaseous refrigerant outlet 32 may flow to the first refrigerant line 131. In this case, the third valve 138 may be turned on to open the sixth refrigerant line 137. Accordingly, the refrigerant flowing through the first refrigerant line 131 may flow into the absorber 20 through the second branch 132 and the sixth refrigerant line 137. In this case, since the pressure inside the absorber 20 is the lowest among the structures of the absorption type cold and hot water generator, the gaseous refrigerant can flow into the absorber 20 without flowing into the second refrigerant line 133.

The gaseous refrigerant introduced into the absorber 20 may be introduced into the first heat exchanger through the first eliminator. The gaseous refrigerant introduced into the first heat exchanger is disposed inside the first heat exchanger and can be heat-exchanged with the second cold / hot water line 102 in which hot water flows, condensed, and then stored in the first heat exchanger . In this case, the amount of gaseous refrigerant in accordance with the embodiment of the present invention is increased in comparison with the amount of gaseous refrigerant flowing into the first heat exchanger in the conventional heating operation state, thereby increasing the heat exchange efficiency between the gaseous refrigerant and the hot water, .

The first valve 23, the second valve 118, the third valve 138, and the fourth valve 144 of the above-described configuration are provided with the mixing valve 23, A valve 118, a refrigerant valve 138, and a bleed valve 144, respectively.

Claims (12)

A first heat exchanger for exchanging heat between the gaseous refrigerant and the hot water to condense the gaseous refrigerant into liquid refrigerant;
An absorber in which a medium liquid is contained;
A first absorbent line extending from the absorber to provide a flow path for the diluent solution of the absorber to flow;
A bypass flow path for bypassing a part of the diluting solution flowing through the first absorbent line to the inlet side of the first absorbent line;
A first regenerator connected to the first absorption liquid line and separating the diluted solution supplied from the first absorption liquid line into a medium liquid and gaseous refrigerant;
A temperature sensing unit disposed in the first regenerator and sensing a temperature of the first regenerator;
A second absorber line extending from the first regenerator to the absorber, the second absorber line providing a flow path for the heavy liquid of the first regenerator to flow into the absorber;
An absorption liquid valve disposed in the second absorption liquid line for selectively opening and closing the second absorption liquid line;
A sucking device connected to the absorber to which a part of the middle liquid in the absorber flows;
A concentration sensing unit disposed in the additional sensing unit for sensing a concentration of the middle-concentration liquid in the sensing unit;
A water level sensor disposed in the water adding device for sensing a water level inside the water adding device;
A supplementary line extending from the additional device to the absorber, the supplementary line providing a passage through which the heavy liquid in the additional device is reintroduced into the absorber; And
And an additional valve disposed on the additional line for selectively opening and closing the additional line,
In the first heating mode in which the addition valve is turned on so that the additional device is operated normally,
And a second heating mode in which the absorption liquid valve is turned on to open the second absorption liquid line when the measured temperature of the temperature sensing unit is equal to or higher than the preset temperature,
In the second heating mode,
Wherein when the concentration of the intermediate liquid measured by the concentration sensing unit is equal to or higher than the set concentration, the third heating mode is performed in which the extraction valve is turned off to close the additional line.

The method according to claim 1,
Wherein when the additional valve closes the additional line, the heavy liquid in the additional device is stored in the additional device without being re-introduced into the absorber.
delete The method according to claim 1,
A second regenerator in which the refrigerant is condensed by exchanging the gaseous refrigerant separated from the first regenerator and the intermediate liquid;
A drain heat exchanger for exchanging heat between the rare gas flowing through the bypass flow path and the refrigerant condensed in the second regenerator;
A mixing line for providing a flow path for the condensed liquid refrigerant of the first heat exchanger to flow into the absorber; And
Further comprising a mixing valve disposed in the mixing line for selectively opening and closing the mixing line,
In the third heating mode,
And a fourth heating mode in which the mixing valve is turned on to open the mixing line when the level of the intermediate liquid measured by the water level sensing unit is equal to or higher than a set water level,
In the fourth heating mode,
And the gaseous refrigerant separated from the first regenerator flows into the absorber.
5. The method of claim 4,
Wherein the set temperature is 150 DEG C or higher.
5. The method of claim 4,
Further comprising a refrigerant line for providing a flow path through which the gaseous refrigerant separated from the first regenerator flows,
The refrigerant line,
A main refrigerant line extending from the first regenerator to the second regenerator;
A branch portion into which the gaseous refrigerant flowing in the main refrigerant line branches;
A sub-refrigerant line extending from the branch portion to the absorber; And
And a refrigerant valve disposed in the secondary refrigerant line for selectively opening and closing the secondary refrigerant line,
In the fourth heating mode,
The refrigerant valve is turned on to open the sub-refrigerant line,
And the gaseous refrigerant separated from the first regenerator flows into the sub-refrigerant line.


delete The method according to claim 6,
Wherein the absorber and the first heat exchanger are provided in one shell, and the gaseous refrigerant introduced into the absorber flows into the first heat exchanger.
delete delete The method according to claim 1,
Wherein the intermediate liquid is an aqueous lithium bromide (LiBr) solution.
12. The method of claim 11,
Wherein the set concentration is 55% or more.

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