JP7015671B2 - Absorption heat exchange system - Google Patents

Description

The present invention relates to an absorption heat exchange system, and more particularly to an absorption heat exchange system capable of taking out two types of fluids to be heated having different temperatures.

Heat exchangers are widely used as devices for exchanging heat between hot and cold fluids. In a heat exchanger in which heat exchange is performed directly between two fluids, the temperatures of the low-temperature fluid and the high-temperature fluid that flow out after the heat exchange are equal to the amount of heat exchanged between the two (see, for example, Patent Document 1). .).

Japanese Patent No. 5498809 (see FIG. 11 etc.)

One of the uses of heat exchangers is to recover waste heat. Since the waste heat is heat that is discarded without being used, the more heat that can be recovered, the more effectively the heat can be used. When there is a demand for two types of fluids having different temperatures on the side of using the recovered heat, if the two types of fluids having different temperatures can be taken out, the recovered heat can be effectively used.

In view of the above problems, it is an object of the present invention to provide an absorption heat exchange system capable of taking out two types of fluids to be heated having different temperatures.

In order to achieve the above object, in the absorption type heat exchange system according to the first aspect of the present invention, for example, as shown in FIG. 1, the absorption liquid Sa absorbs the vapor Ve of the refrigerant and the concentration is reduced. The absorption unit 10 that raises the temperature of the first heated fluid FL1 by the absorption heat released when it becomes Sw; and the second by the condensation heat released when the vapor Vg of the refrigerant condenses into the refrigerant liquid Vf. A condensing unit 40 that raises the temperature of the fluid FL2 to be heated; required when the refrigerant liquid Vf is introduced from the condensing unit 40 and the introduced refrigerant liquid Vf evaporates to become the vapor vapor Ve of the refrigerant supplied to the absorption unit 10. Evaporation section 20 that lowers the temperature of the heating source fluid FH by removing the latent heat of evaporation from the heating source fluid FH; The regenerating section 30 lowers the temperature of the heating source fluid FH by removing the heat required for removing Vg to form a concentrated solution Sa having an increased concentration from the heating source fluid FH; and the temperature rises in the condensing section 40. A heat exchange unit that exchanges heat between the second heated fluid FL2 and the heating fluid FH that raises the temperature of the second heated fluid FL2 after the temperature rises in the condensing unit 40. 80; due to the absorption heat pump cycle of the absorption liquids Sa, Sw and the refrigerants Ve, Vf, Vg, the internal pressure and temperature of the absorption unit 10 are higher than those of the regeneration unit 30, and the evaporation unit 20 is from the condensation unit 40. Is also configured to increase internal pressure and temperature.

With this configuration, two types of fluids to be heated with different temperatures can be taken out.

Further, the absorption heat exchange system according to the second aspect of the present invention is heated by the absorption unit 10 in the absorption heat exchange system 1 according to the first aspect of the present invention, for example, as shown in FIG. A gas-liquid separator 16 is provided which introduces the first heated fluid FL1 and separates the liquid Fr and the steam Fv of the first heated fluid FL1.

With this configuration, it is possible to take out the steam of the first fluid to be heated, which has high utility value.

Further, the absorption type heat exchange system according to the third aspect of the present invention is, for example, as shown in FIG. 1, in the absorption type heat exchange system 1 according to the first aspect or the second aspect of the present invention. The exchange unit 80 is configured to introduce at least one of the heat source fluid FH after the temperature has dropped in the evaporation unit 20 and the heat source fluid FH after the temperature has dropped in the regeneration unit 30 as a heating fluid. ..

With this configuration, more heat can be recovered from the heat source fluid discharged from the absorption heat exchange system.

Further, the absorption type heat exchange system according to the fourth aspect of the present invention has, for example, as shown in FIG. 3, the absorption type heat according to any one of the first to third aspects of the present invention. In the exchange system 2, the heat exchange unit 80 is configured to introduce a part of the heat source fluid FHs branched from the heat source fluid FH before being introduced into the evaporation unit 20 and the regeneration unit 30 as the temperature rising fluid. ing.

With this configuration, the temperature of the second heated fluid flowing out of the heat exchange section can be raised.

Further, the absorption type heat exchange system according to the fifth aspect of the present invention is, for example, as shown with reference to FIG. 3, in the absorption type heat exchange system 2 according to the fourth aspect of the present invention, the heat exchange unit 80. The flow rate of the heating source fluid FH flowing into the evaporating section 20 and the regenerating section 30 and the heating source fluid FHs flowing into the heat exchange section 80 so that the temperature of the second heated fluid FL2 flowing out of the heating section 20 becomes a predetermined temperature. The ratio with the flow rate is set.

With this configuration, the temperature of the second heated fluid flowing out of the heat exchange unit can be set to a predetermined temperature.

Further, the absorption heat exchange system according to the sixth aspect of the present invention is, for example, as shown in FIG. 4, the absorption heat according to any one of the first to fifth aspects of the present invention. In the exchange system 3, a part of the heat source fluid FH branched from the heat source fluid FH before being introduced into the evaporation unit 20 and the regeneration unit 30 is introduced into the absorption unit 10 as the first heated fluid FL1. It is configured.

With this configuration, the temperature of the first heated fluid can be made higher than the temperature of the branched heating source fluid.

Further, the absorption heat exchange system according to the seventh aspect of the present invention is, for example, as shown in FIG. 5, the absorption heat according to any one of the first to sixth aspects of the present invention. The exchange system 4 includes a refrigerant heat exchanger 99 that exchanges heat between the refrigerant liquid Vf conveyed from the condensing unit 40 to the evaporation unit 20 and the temperature rising fluid FH flowing out of the heat exchange unit 80.

With this configuration, the temperature of the heating fluid flowing out of the absorption heat exchange system can be lowered, and the amount of heat recovered from the heating fluid in the absorption heat exchange system can be increased.

In order to achieve the above object, in the absorption type heat exchange system according to the eighth aspect of the present invention, for example, as shown in FIG. 6, the absorption fluid Sa absorbs the steam Ve of the refrigerant and the concentration is reduced. The absorption unit 10 that raises the temperature of the first fluid to be heated FL1 by the absorption heat released when it becomes Sw; Condensation section 40 that raises the temperature of the fluid to be heated FL2; Necessary when the refrigerant liquid Vf is introduced from the condensing section 40 and the introduced refrigerant liquid Vf evaporates to become steam Ve of the refrigerant supplied to the absorption section 10. Evaporation section 20 that lowers the temperature of the heating source fluid FH by removing the latent heat of evaporation from the heating source fluid FH; It is provided with a regenerator 30 for lowering the temperature of the heating source fluid FH by removing the heat required for removing the heat from the heating source fluid FH to obtain a concentrated solution Sa having an increased concentration; absorption liquids Sa, Sw and a refrigerant. Due to the absorption heat pump cycle with Ve, Vf, and Vg, the absorption unit 10 is configured to have a higher internal pressure and temperature than the regeneration unit 30, and the evaporation unit 20 is configured to have a higher internal pressure and temperature than the condensing unit 40. Further, the second heated fluid FL2 flowing out from the condensing portion 40 is introduced, and a medium temperature heat consumption facility 64 for heating a substance requiring heating with the heat possessed by the second heated fluid FL2 is provided.

With this configuration, two types of fluids to be heated with different temperatures can be taken out and effectively used.

According to the present invention, it is possible to take out two types of fluids to be heated having different temperatures.

It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the modification of 1st Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 3rd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 4th Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 5th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, members that are the same as or correspond to each other are designated by the same or similar reference numerals, and duplicated description will be omitted.

First, the absorption heat exchange system 1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic system diagram of the absorption heat exchange system 1. The absorption heat exchange system 1 is a system that exchanges heat between the first low-temperature fluid FL1 and the second low-temperature fluid FL2 and the high-temperature fluid FH by utilizing the absorption heat pump cycle between the absorption liquid and the refrigerant. Here, the first low-temperature fluid FL1 and the second low-temperature fluid FL2 are fluids for which the temperature is to be raised in the absorption-type heat exchange system 1, and the first low-temperature fluid FL1 is used as the first heated fluid and the second. The low temperature fluid FL2 corresponds to the second heated fluid, respectively. The high temperature fluid FH is a fluid whose temperature drops in the absorption heat exchange system 1, and corresponds to a heating source fluid. The absorption heat exchange system 1 comprises an absorber 10, an evaporator 20, and a regenerator 30 that constitute a main device in which an absorption heat pump cycle of an absorption liquid S (Sa, Sw) and a refrigerant V (Ve, Vg, Vf) is performed. , And a condenser 40, and further includes a heat exchange unit 80. The absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 correspond to an absorption unit, an evaporation unit, a regeneration unit, and a condensation unit, respectively.

In the present specification, the absorbent liquid is referred to as "rare solution Sw" or "concentrated solution Sa" depending on the properties and the position on the heat pump cycle in order to facilitate the distinction on the heat pump cycle. When it does not matter, it is collectively referred to as "absorbent solution S". Similarly, regarding the refrigerant, in order to facilitate the distinction on the heat pump cycle, "evaporator refrigerant steam Ve", "regenerator refrigerant steam Vg", "refrigerant liquid Vf", etc., depending on the properties and the position on the heat pump cycle. However, when the properties are unquestioned, they are collectively referred to as "refrigerant V". In this embodiment, a LiBr aqueous solution is used as the absorbing liquid S (a mixture of the absorbing agent and the refrigerant V), and water (H ₂ O) is used as the refrigerant V.

The absorber 10 has a heat transfer tube 12 constituting the flow path of the first low temperature fluid FL1 and a concentrated solution supply device 13 for supplying the concentrated solution Sa to the surface of the heat transfer tube 12. The absorber 10 generates heat of absorption when the concentrated solution Sa is supplied to the surface of the heat transfer tube 12 from the concentrated solution supply device 13 and the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve to become a dilute solution Sw. The first low-temperature fluid FL1 flowing through the heat transfer tube 12 receives the absorbed heat, and the first low-temperature fluid FL1 is heated.

The absorption heat exchange system 1 according to the present embodiment includes a gas-liquid separator 16 that separates the first low-temperature fluid FL1 heated by flowing through the heat transfer tube 12 of the absorber 10 into a liquid and a vapor. The gas-liquid separator 16 and the heat transfer tube 12 are connected by a fluid tube 17 and a separation liquid tube 18 after heating. After heating, the fluid tube 17 guides the heated first low-temperature fluid FL1 flowing through the heat transfer tube 12 to the gas-liquid separator 16. The separation liquid tube 18 guides the separation liquid Fr, which is the liquid after the first low-temperature fluid FL1 that has flowed through the heat transfer tube 12 and is heated in the gas-liquid separator 16, to the heat transfer tube 12. Further, one end of the separation steam pipe 19 is connected to the upper part (typically the top) of the gas-liquid separator 16. The separation steam pipe 19 guides the separation steam Fv, which is the steam after the first low-temperature fluid FL1 heated through the heat transfer tube 12 is separated in the gas-liquid separator 16, to the outside of the absorption heat exchange system 1. It is a thing. Further, a supplementary introduction pipe 18s for introducing the replenishment liquid Fs for supplementing the first low temperature fluid FL1 mainly supplied to the outside of the absorption heat exchange system 1 as steam from the outside of the absorption heat exchange system 1 is provided. ing. The supplementary introduction pipe 18s is connected to the separation liquid pipe 18, and is configured to join the replenishment liquid Fs with the separation liquid Fr flowing through the separation liquid pipe 18. The supplementary introduction pipe 18s is provided with a replenishment liquid pump 18p that pumps the replenishment liquid Fs toward the separation liquid pipe 18. The separation liquid Fr flowing through the separation liquid tube 18 is configured to be introduced into the heat transfer tube 12 of the absorber 10 as the first low temperature fluid FL1.

The evaporator 20 has a heat source tube 22 constituting a flow path of the high-temperature fluid FH inside the evaporator can body 21. The evaporator 20 does not have a nozzle for spraying the refrigerant liquid Vf inside the evaporator can body 21. Therefore, the heat source pipe 22 is arranged so as to be immersed in the refrigerant liquid Vf stored in the evaporator can body 21 (full-liquid evaporator). The evaporator 20 is configured so that the refrigerant liquid Vf around the heat source pipe 22 evaporates with the heat of the high temperature fluid FH flowing in the heat source pipe 22 to generate the evaporator refrigerant steam Ve. A refrigerant liquid pipe 45 for supplying the refrigerant liquid Vf is connected to the evaporator can body 21 in the evaporator can body 21.

The absorber 10 and the evaporator 20 communicate with each other. By communicating the absorber 10 and the evaporator 20, the evaporator refrigerant vapor Ve generated in the evaporator 20 can be supplied to the absorber 10.

The regenerator 30 has a heat source tube 32 for flowing a high-temperature fluid FH for heating the dilute solution Sw inside, and a rare solution supply device 33 for supplying the dilute solution Sw to the surface of the heat source tube 32. In the present embodiment, the high temperature fluid FH flowing in the heat source pipe 32 is the high temperature fluid FH after flowing in the heat source pipe 22 of the evaporator 20. The heat source pipe 22 of the evaporator 20 and the heat source pipe 32 of the regenerator 30 are connected by a high temperature fluid connecting pipe 25 through which the high temperature fluid FH flows. A high-temperature fluid discharge pipe 39 is connected to an end of the heat source pipe 32 of the regenerator 30 opposite to the end to which the high-temperature fluid connecting pipe 25 is connected. The high temperature fluid discharge pipe 39 is a pipe constituting a flow path for guiding the high temperature fluid FH to the outside of the system. In the regenerator 30, the dilute solution Sw supplied from the dilute solution supply device 33 is heated by the high temperature fluid FH, so that the refrigerant V evaporates from the dilute solution Sw to generate a concentrated solution Sa having an increased concentration. It is configured in. The refrigerant V evaporated from the dilute solution Sw is configured to move to the condenser 40 as the regenerator refrigerant vapor Vg.

The condenser 40 has a heat transfer tube 42 through which the second low-temperature fluid FL2 flows inside the condenser can body 41. The condenser 40 introduces the regenerator refrigerant vapor Vg generated in the regenerator 30, and the second low-temperature fluid FL2 flowing in the heat transfer tube 42 receives the heat of condensation released when this is condensed into the refrigerant liquid Vf. Then, the second low temperature fluid FL2 is configured to be heated. A second low temperature inflow pipe 48 is connected to one end of the heat transfer tube 42, and a second low temperature discharge pipe 49 is connected to the other end. The second low temperature inflow pipe 48 supplies the second low temperature fluid FL2 to the heat transfer pipe 42. The second low-temperature fluid discharge pipe 49 allows the second low-temperature fluid FL2 heated by the heat transfer pipe 42 to flow. The regenerator 30 and the condenser 40 are integrally formed with the can body of the regenerator 30 and the condenser can body 41 so as to communicate with each other. By communicating the regenerator 30 and the condenser 40, the regenerator refrigerant vapor Vg generated in the regenerator 30 can be supplied to the condenser 40.

The portion of the regenerator 30 in which the concentrated solution Sa is stored and the concentrated solution supply device 13 of the absorber 10 are connected by a concentrated solution tube 35 through which the concentrated solution Sa flows. The concentrated solution tube 35 is provided with a solution pump 35p for pumping the concentrated solution Sa. The portion of the absorber 10 in which the dilute solution Sw is stored and the dilute solution supply device 33 are connected by a dilute solution tube 36 through which the dilute solution Sw flows. A solution heat exchanger 38 for exchanging heat between the concentrated solution Sa and the dilute solution Sw is provided in the concentrated solution tube 35 and the dilute solution tube 36. The portion of the condenser 40 in which the refrigerant liquid Vf is stored and the evaporator can body 21 are connected by a refrigerant liquid pipe 45 through which the refrigerant liquid Vf flows. The refrigerant liquid pipe 45 is provided with a refrigerant pump 46 for pressure-feeding the refrigerant liquid Vf.

The heat exchange unit 80 is arranged in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49, and includes the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 and the second low temperature fluid FL2 flowing through the second low temperature discharge pipe 49. It is configured to exchange heat with. In the present embodiment, the high temperature fluid FH whose temperature has dropped in the evaporator 20 and the regenerator 30 functions as a temperature rising fluid and exchanges heat with the second low temperature fluid FL2. The heat exchange unit 80 is typically composed of a shell-and-tube heat exchanger, but may be a device such as a plate heat exchanger that exchanges heat between two fluids.

In the absorption type heat exchange system 1, during steady operation, the pressure and temperature inside the absorber 10 are higher than the pressure and temperature inside the regenerator 30, and the pressure and temperature inside the evaporator 20 are higher than those inside the condenser 40. It will be higher than the internal pressure and temperature. In the absorption type heat exchange system 1, the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 are configured as a type 2 absorption heat pump.

Subsequently, with reference to FIG. 1, the operation of the absorption heat exchange system 1 will be described. First, the absorption heat pump cycle on the refrigerant side will be described. The condenser 40 receives the regenerator refrigerant vapor Vg evaporated in the regenerator 30, and the regenerator refrigerant vapor Vg is cooled and condensed by the second low-temperature fluid FL2 flowing through the heat transfer tube 42 to become the refrigerant liquid Vf. At this time, the temperature of the second low-temperature fluid FL2 rises due to the heat of condensation released when the regenerator refrigerant vapor Vg condenses. The condensed refrigerant liquid Vf is sent to the evaporator can body 21 by the refrigerant pump 46. The refrigerant liquid Vf sent to the evaporator can body 21 is heated by the high-temperature fluid FH flowing in the heat source pipe 22 and evaporates to become the evaporator refrigerant steam Ve. At this time, the temperature of the high-temperature fluid FH is lowered by being deprived of heat by the refrigerant liquid Vf. The evaporator refrigerant vapor Ve generated in the evaporator 20 moves to the absorber 10 communicating with the evaporator 20.

Next, the absorption heat pump cycle on the solution side will be described. In the absorber 10, the concentrated solution Sa is supplied from the concentrated solution supply device 13, and the supplied concentrated solution Sa absorbs the evaporator refrigerant vapor Ve that has moved from the evaporator 20. The concentration of the concentrated solution Sa that has absorbed the evaporator refrigerant vapor Ve decreases to become a dilute solution Sw. In the absorber 10, absorption heat is generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve. The absorbed heat heats the first low-temperature fluid FL1 flowing through the heat transfer tube 12, and the temperature of the first low-temperature fluid FL1 rises. The concentration of the concentrated solution Sa that has absorbed the evaporator refrigerant vapor Ve in the absorber 10 decreases to become a dilute solution Sw, which is stored in the lower part of the absorber 10. The stored dilute solution Sw flows through the dilute solution tube 36 toward the regenerator 30 due to the difference in internal pressure between the absorber 10 and the regenerator 30, and heats with the concentrated solution Sa in the solution heat exchanger 38 to change the temperature. It drops to reach the regenerator 30.

The dilute solution Sw sent to the regenerator 30 is supplied from the dilute solution supply device 33, heated by the high temperature fluid FH flowing through the heat source tube 32, and the refrigerant in the supplied dilute solution Sw evaporates to become a concentrated solution Sa. , Stored in the lower part of the regenerator 30. At this time, the temperature of the high-temperature fluid FH is lowered by being deprived of heat by the dilute solution Sw. The high-temperature fluid FH flowing through the heat source tube 32 has passed through the heat source tube 22 of the evaporator 20. The refrigerant V evaporated from the dilute solution Sw moves to the condenser 40 as the regenerator refrigerant vapor Vg. The concentrated solution Sa stored in the lower part of the regenerator 30 is pumped by the solution pump 35p to the concentrated solution supply device 13 of the absorber 10 via the concentrated solution tube 35. The concentrated solution Sa flowing through the concentrated solution tube 35 exchanges heat with the dilute solution Sw in the solution heat exchanger 38, flows into the absorber 10 after the temperature rises, is supplied from the concentrated solution supply device 13, and so on. Repeat the cycle of.

The changes in temperature of the high temperature fluid FH and the first low temperature fluid FL1 and the second low temperature fluid FL2 in the process of the absorption liquid S and the refrigerant V performing the absorption heat pump cycle as described above will be described with reference to specific examples. The high temperature fluid FH flowing into the heat source pipe 22 of the evaporator 20 at 95 ° C. is deprived of heat by the refrigerant liquid Vf, and the temperature drops to 89 ° C. The high-temperature fluid FH flowing out of the evaporator 20 flows through the high-temperature fluid connecting pipe 25 and then flows into the heat source pipe 32 of the regenerator 30 at 89 ° C. The high temperature fluid FH flowing into the heat source tube 32 loses heat to the dilute solution Sw, and the temperature drops to 84 ° C. The high-temperature fluid FH whose temperature has dropped in the regenerator 30 flows out of the regenerator 30 at 84 ° C., flows through the high-temperature fluid discharge pipe 39, and flows into the heat exchange unit 80.

On the other hand, the second low-temperature fluid FL2 flowing into the heat transfer tube 42 of the condenser 40 at 32 ° C. obtains the heat of condensation released when the regenerator refrigerant vapor Vg condenses, and the temperature rises to 50 ° C. The second low-temperature fluid FL2 flowing out of the condenser 40 flows through the second low-temperature discharge pipe 49 and flows into the heat exchange unit 80. In the heat exchange unit 80, heat exchange is performed between the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 and the second low temperature fluid FL2 flowing through the second low temperature discharge pipe 49, and the high temperature fluid FH at 84 ° C. becomes 74 ° C. The temperature drops, and the temperature of the second low temperature fluid FL2 at 50 ° C. rises to 80 ° C. The high temperature fluid FH whose temperature has dropped to 74 ° C. continues to flow through the high temperature fluid discharge pipe 39 and is discharged from the absorption heat exchange system 1. The second low temperature fluid FL2 whose temperature has risen to 80 ° C. is supplied to a facility (not shown) that consumes heat at a medium temperature. In the absorption type heat exchange system 1, the temperature of the second low temperature fluid FL2 heated by the heat exchange unit 80 is not higher than the temperature of the high temperature fluid FH flowing out from the evaporator 20 and the regenerator 30, but the high temperature fluid FH is generated. It is suitable when the fluid has properties or types that cannot be used in equipment that consumes medium temperature heat. For example, when the high-temperature fluid FH is a fluid that circulates in the production process and the high-temperature fluid FH that has flowed into the absorption-type heat exchange system 1 from the production process is cooled by removing heat, or is returned to the production process, or is high temperature. This is a case where the fluid FH is a fluid to be discarded and is discarded after being cooled by taking heat with the absorption type heat exchange system 1. Equipment that consumes medium temperature heat typically includes heating equipment installed at relatively short distances. In the absorption type heat exchange system 1, the flow rate of the second low temperature fluid FL2 is set to about 1/3 of the flow rate of the high temperature fluid FH. In other words, the flow rate ratio between the second low temperature fluid FL2 and the high temperature fluid FH is about 1: 3. This flow rate ratio may be fixed by using a pipe, an orifice or the like of a size adopted according to a predetermined value, or may be configured to be automatically or manually adjustable by using a valve or the like. When the flow rate ratio is automatically adjusted using a valve or the like, the valve or the like is typically controlled by a control device.

Further, the temperature of the first low temperature fluid FL1 flowing into the heat transfer tube 12 of the absorber 10 at 82 ° C. rises to 110 ° C. by obtaining the absorption heat generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve. .. When the first low-temperature fluid FL1 is heated by the absorber 10, a part thereof boils and becomes a gas-liquid mixed state. The first low-temperature fluid FL1 flowing out of the absorber 10 flows into the gas-liquid separator 16 via the fluid pipe 17 after heating. The first low-temperature fluid FL1 that has flowed into the gas-liquid separator 16 is separated into the separated steam Fv and the separated liquid Fr. The separated steam Fv separated by the gas-liquid separator 16 flows out to the separated steam pipe 19, and is supplied to a facility (not shown) that consumes high temperature heat. Equipment that consumes high temperature heat typically includes factory processes and distant heating equipment. As described above, in the absorption heat exchange system 1, the separated steam Fv (first low temperature fluid FL1) having a temperature higher than the temperature of the high temperature fluid FH to be introduced can be taken out. On the other hand, the separated liquid Fr separated by the gas-liquid separator 16 flows through the separation liquid pipe 18, and the replenishing liquid Fs flowing through the supplementary introduction pipe 18s joins in the middle to lower the temperature, and becomes the first low-temperature fluid FL1. It is supplied into the heat transfer tube 12 at 82 ° C. Typically, the amount supplied to the equipment that consumes high temperature heat as the separated steam Fv is supplied from the outside as the replenishing liquid Fs.

As described above, according to the absorption type heat exchange system 1 according to the present embodiment, absorption in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 exhibiting the functions of the type 2 absorption heat pump. Heat exchange between the high temperature fluid FH and the first low temperature fluid FL1 and the second low temperature fluid FL2 is indirectly performed via the absorption heat pump cycle between the liquid S and the refrigerant V, and the high temperature fluid is directly exchanged in the heat exchange unit 80. By exchanging heat between the FH and the second low-temperature fluid FL2, two types of heated fluids (first low-temperature fluid FL1 and second low-temperature fluid FL2) having different temperatures can be taken out. Further, in the absorption type heat exchange system 1, the first low-temperature fluid FL1 flowing out from the absorber 10 is separated into gas and liquid by the gas-liquid separator 16 and taken out as separated steam Fv, so that steam having a large enthalpy and high utility value is supplied. can do. In addition, each of the high temperature fluid FH, the first low temperature fluid FL1, and the second low temperature fluid FL2 may have different or the same fluid properties and types from the other one or two.

Next, with reference to FIG. 2, the absorption heat exchange system 1A according to the modified example of the first embodiment of the present invention will be described. FIG. 2 is a schematic system diagram of the absorption heat exchange system 1A. The absorption heat exchange system 1A differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. In the absorption heat exchange system 1A, the first low-temperature fluid FL1 flowing out of the absorber 10 is supplied to a facility (not shown) that consumes high-temperature heat in a liquid state. Therefore, in the absorption type heat exchange system 1A, the gas-liquid separator 16 (see FIG. 1) provided in the absorption type heat exchange system 1 (see FIG. 1) and the separation steam pipe 19 (see FIG. 1) having a configuration around the gas-liquid separator 16 (see FIG. 1). ), A supplementary introduction pipe 18s (see FIG. 1) in which the separation liquid pipe 18 (see FIG. 1) and the replenishment liquid pump 18p (see FIG. 1) are arranged, and equipment that consumes high temperature heat, etc. The first low-temperature fluid FL1 sent from the above flows into the heat transfer tube 12 of the absorber 10, and the first low-temperature fluid FL1 heated by the absorber 10 flows through the fluid tube 17 after heating and consumes high-temperature heat. It is configured to be supplied to the equipment. The configuration of the absorption heat exchange system 1A other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

In the absorption heat exchange system 1A configured as described above, the absorption heat pump cycle between the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30 and the condenser 40 is the absorption heat exchange system 1. It works in the same manner as (see FIG. 1). Further, the flow path and temperature change of the high temperature fluid FH also operate in the same manner as in the absorption heat exchange system 1 (see FIG. 1). Further, the flow path and the temperature change of the second low temperature fluid FL2 also operate in the same manner as in the absorption type heat exchange system 1 (see FIG. 1). On the other hand, the first low-temperature fluid FL1 flows into the heat transfer tube 12 of the absorber 10, and the temperature is such that the concentrated solution Sa obtains the absorption heat generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve in the absorber 10 and does not evaporate. Ascends and flows out of the absorber 10, and after heating, is supplied to a facility (not shown) that consumes high-temperature heat via a fluid tube 17. As described above, the absorption heat exchange system 1A can take out two kinds of liquids having different temperatures with a simple configuration omitting the configuration around the gas-liquid separator 16 (see FIG. 1).

Next, with reference to FIG. 3, the absorption heat exchange system 2 according to the second embodiment of the present invention will be described. FIG. 3 is a schematic system diagram of the absorption heat exchange system 2. The absorption heat exchange system 2 differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. In the absorption heat exchange system 2, the partial high temperature fluid FHs obtained by branching a part of the high temperature fluid FH before being introduced into the evaporator 20 was bypassed the evaporator 20 and the regenerator 30 and flowed out from the regenerator 30. A high temperature fluid detour pipe 29 for merging with the high temperature fluid FH is provided. One end of the high temperature fluid detour pipe 29 is connected to a high temperature fluid introduction pipe 24 that introduces the high temperature fluid FH into the heat source pipe 22. The other end of the high temperature fluid detour pipe 29 is connected to the high temperature fluid discharge pipe 39. In the present embodiment, the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 is discharged to the outside of the system without going through the heat exchange unit 80. In the absorption type heat exchange system 1 (see FIG. 1), the heat exchange unit 80 is arranged in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49, instead of being arranged in the second low temperature discharge pipe 49 and the high temperature discharge pipe 49. It is arranged in the fluid detour pipe 29 and is configured to exchange heat between the second low temperature fluid FL2 flowing through the second low temperature discharge pipe 49 and the partial high temperature fluid FHs flowing through the high temperature fluid detour pipe 29. ing. The configuration of the absorption heat exchange system 2 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

The operation of the absorption heat exchange system 2 configured as described above is as follows. The absorption heat pump cycle of the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 operates in the same manner as in the absorption heat exchange system 1 (see FIG. 1). The high-temperature fluid FH flowing through the high-temperature fluid introduction pipe 24 toward the evaporator 20 is partially branched and flows into the high-temperature fluid detour pipe 29 as partial high-temperature fluid FHs, and the remaining high-temperature fluid FH flows into the heat source pipe 22. .. The high-temperature fluid FH that has flowed into the heat source tube 22 is deprived of heat by the refrigerant liquid Vf, the temperature drops, flows out of the evaporator 20, flows through the high-temperature fluid connecting tube 25, and then flows into the heat source tube 32 of the regenerator 30. Then, in the regenerator 30, heat is taken by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high-temperature fluid FH that has flowed from the high-temperature fluid introduction pipe 24 into the high-temperature fluid detour pipe 29 flows into the heat exchange unit 80. On the other hand, the second low-temperature fluid FL2 that has flowed into the heat transfer tube 42 of the condenser 40 obtains the heat of condensation released when the regenerator refrigerant vapor Vg is condensed, and the temperature rises, and the heat is exchanged by flowing out of the condenser 40. It flows into the part 80. In the heat exchange unit 80, heat exchange is performed between the partial high temperature fluid FHs flowing through the high temperature fluid detour pipe 29 and the second low temperature fluid FL2 flowing through the second low temperature discharge pipe 49, and the temperature of the partial high temperature fluid FHs drops. , The temperature of the second low temperature fluid FL2 rises. The partial high-temperature fluid FHs whose temperature has dropped in the heat exchange unit 80 merge with the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 via the high-temperature fluid detour pipe 29, and are discharged from the absorption-type heat exchange system 2. The second low-temperature fluid FL2 whose temperature has risen in the heat exchange unit 80 continues to flow through the second low-temperature discharge pipe 49 and is supplied to equipment (not shown) that consumes medium-temperature heat. On the other hand, the first low-temperature fluid FL1 flows into the heat transfer tube 12 of the absorber 10 and the concentrated solution Sa absorbs the evaporator refrigerant steam Ve in the absorber 10 as in the absorption type heat exchange system 1 (see FIG. 1). The absorbed heat generated at this time is obtained, the temperature rises and flows out of the absorber 10, flows into the gas-liquid separator 16 and is separated into the separated steam Fv and the separated liquid Fr, and the separated steam Fv is the heat of high temperature. The separated liquid Fr is supplied to a facility (not shown) that consumes the liquid, and after the necessary replenishing liquid Fs is merged, the separated liquid Fr flows into the heat transfer tube 12 again as the first low temperature fluid FL1.

According to the absorption type heat exchange system 2, the heat exchange unit 80 corresponds to the ratio of the flow rate of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 to the flow rate flowing into the heat source tube 22 and the flow rate flowing into the high temperature fluid detour pipe 29. The temperature of the second low temperature fluid FL2 that flows out of and is supplied to the equipment that consumes the heat of the medium temperature can be adjusted. In other words, the flow rate of the high temperature fluid FH flowing into the heat source pipe 22 and the high temperature fluid FH flowing into the high temperature fluid detour pipe 29 so that the temperature of the second low temperature fluid FL2 flowing out from the heat exchange unit 80 becomes a predetermined temperature. You can set the ratio to the flow rate of. In this case, the flow rate ratio may be fixed by using a pipe, an orifice, or the like of a size adopted for each of the heat source pipe 22 and the high temperature fluid detour pipe 29 according to a predetermined value, and the pipes 22 and 29, respectively. It may be configured to be automatically or manually adjustable by using a valve or the like arranged at any of the above positions. Further, the temperature of the partial high temperature fluid FHs which is the heating side fluid of the heat exchange unit 80 in the present embodiment is the high temperature fluid FH which is the heating side fluid of the heat exchange unit 80 in the absorption type heat exchange system 1 (see FIG. 1). In the present embodiment, the temperature of the second low temperature fluid FL2 heated by the heat exchange unit 80 can be made higher than that of the absorption type heat exchange system 1 (see FIG. 1). .. Although not shown, in addition to the configuration of the absorption heat exchange system 2, heat exchange units 80 arranged in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49 as shown in FIG. 1 are provided. Two heat exchange units 80 may be provided. In this case, the connection portion of the high temperature fluid detour pipe 29 to the high temperature fluid discharge pipe 39 is set as the upstream side of the heat exchange portion 80 arranged in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49, and the partial high temperature fluid FHs It is preferable to exchange heat between the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 and the second low temperature fluid FL2 flowing through the second low temperature discharge pipe 49. In other words, the second low-temperature fluid FL2 flowing through the second low-temperature discharge pipe 49 exchanges heat with the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 after the partial high-temperature fluid FHs merges, and then forms the high-temperature fluid detour pipe 29. When configured to exchange heat with the flowing partial high temperature fluid FHs, it may be first heated by the high temperature fluid FH and then heated by the partial high temperature fluid FHs having a temperature higher than that of the high temperature fluid FH.

Next, with reference to FIG. 4, the absorption heat exchange system 3 according to the third embodiment of the present invention will be described. FIG. 4 is a schematic system diagram of the absorption heat exchange system 3. The absorption heat exchange system 3 differs from the absorption heat exchange system 1A (see FIG. 2) mainly in the following points. The absorption heat exchange system 3 is a branched fluid in which a part of the high temperature fluid FH branched from the high temperature fluid FH before being introduced into the evaporator 20 flows into the heat transfer tube 12 of the absorber 10 as the first low temperature fluid FL1. An inflow pipe 15 is provided. One end of the branch fluid inflow pipe 15 is connected to a high temperature fluid introduction pipe 24 that introduces the high temperature fluid FH into the heat source pipe 22. The other end of the branched fluid inflow pipe 15 is connected to the end of the heat transfer pipe 12 opposite to the end to which the heated fluid pipe 17 is connected. The configuration of the absorption heat exchange system 3 other than the above is the same as that of the absorption heat exchange system 1A (see FIG. 2).

In the absorption heat exchange system 3 configured as described above, the absorption heat pump cycle between the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 is the absorption heat exchange system 1A. It works in the same manner as (see FIG. 2). Further, the flow path and the temperature change of the second low temperature fluid FL2 also operate in the same manner as the absorption type heat exchange system 1A (see FIG. 2). The high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 toward the evaporator 20 is partially branched and flows into the branched fluid inflow pipe 15 as the first low temperature fluid FL1, and the remaining high temperature fluid FH flows into the heat source pipe 22. do. The high-temperature fluid FH that has flowed into the heat source tube 22 is deprived of heat by the refrigerant liquid Vf, the temperature drops, flows out of the evaporator 20, flows through the high-temperature fluid connecting tube 25, and then flows into the heat source tube 32 of the regenerator 30. Then, in the regenerator 30, heat is taken by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high-temperature fluid FH flowing out of the regenerator 30 flows through the high-temperature fluid discharge pipe 39, exchanges heat with the second low-temperature fluid FL2 in the heat exchange unit 80 to lower the temperature, and is discharged from the absorption-type heat exchange system 3. To. On the other hand, the first low-temperature fluid FL1 (a part of the branched high-temperature fluid FH) that has flowed from the high-temperature fluid introduction pipe 24 into the branched fluid inflow pipe 15 flows into the heat transfer tube 12 of the absorber 10 and is concentrated in the absorber 10. Equipment that obtains the absorption heat generated when the solution Sa absorbs the evaporator refrigerant vapor Ve, raises the temperature, flows out of the absorber 10, and consumes the high temperature heat through the fluid tube 17 after heating (non-existence). (Illustrated). As described above, in the absorption type heat exchange system 3, a part of the high temperature fluid FH branched from the high temperature fluid FH before being introduced into the evaporator 20 is introduced into the absorber 10 as the first low temperature fluid FL1 and thus absorbed. The temperature of the first low temperature fluid FL1 flowing out of the vessel 10 can be made higher than the temperature of the high temperature fluid FH before being introduced into the evaporator 20.

Next, with reference to FIG. 5, the absorption heat exchange system 4 according to the fourth embodiment of the present invention will be described. FIG. 5 is a schematic system diagram of the absorption heat exchange system 4. The absorption heat exchange system 4 differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. The absorption heat exchange system 4 includes a refrigerant heat exchanger 99 in addition to the configuration of the absorption heat exchange system 1 (see FIG. 1). The refrigerant heat exchanger 99 is a device that exchanges heat between the refrigerant liquid Vf heading from the condenser 40 to the evaporator 20 and the high-temperature fluid FH flowing out of the heat exchange unit 80. The refrigerant heat exchanger 99 is arranged in the refrigerant liquid pipe 45 on the downstream side of the refrigerant pump 46 and the high temperature fluid discharge pipe 39 on the downstream side of the heat exchange unit 80. As the refrigerant heat exchanger 99, a shell-and-tube type or plate type heat exchanger is used. The configuration of the absorption heat exchange system 3 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

The operation of the absorption heat exchange system 4 configured as described above is as follows. The absorption heat pump cycle between the absorber S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 excludes the temperature change of the refrigerant liquid Vf from the condenser 40 to the evaporator 20. It operates in the same manner as the exchange system 1 (see FIG. 1). The flow path and temperature change of the high temperature fluid FH operate in the same manner as the absorption heat exchange system 1 (see FIG. 1) until they flow out from the heat exchange unit 80. The flow path and temperature change of the first low temperature fluid FL1 and the second low temperature fluid FL2 operate in the same manner as in the absorption heat exchange system 1 (see FIG. 1). Then, in the absorption type heat exchange system 4 provided with the refrigerant heat exchanger 99, heat is exchanged between the refrigerant liquid Vf heading from the condenser 40 to the evaporator 20 and the high temperature fluid FH flowing out from the heat exchange unit 80. As a result, the temperature of the refrigerant liquid Vf rises, and the temperature of the high-temperature fluid FH decreases. Since the temperature of the refrigerant liquid Vf flowing out of the refrigerant heat exchanger 99 rises and flows into the evaporator 20, the amount of heat required for evaporation in the evaporator 20 can be suppressed, and the temperature drops accordingly. The amount of heat possessed by the high-temperature fluid FH in which the heat is suppressed can be used for heat exchange in the heat exchange unit 80, and the temperature of the second low-temperature fluid FL2 flowing out of the heat exchange unit 80 can be raised. On the other hand, the temperature of the high-temperature fluid FH flowing out of the refrigerant heat exchanger 99 drops and is discharged from the absorption-type heat exchange system 4, so that the amount of heat recovered by the high-temperature fluid FH in the absorption-type heat exchange system 4 can be increased. can. The refrigerant heat exchanger 99 shall be installed in each of the absorption type heat exchange system 1A (see FIG. 2), the absorption type heat exchange system 2 (see FIG. 3), and the absorption type heat exchange system 3 (see FIG. 4). You can also.

Next, with reference to FIG. 6, the absorption heat exchange system 5 according to the fifth embodiment of the present invention will be described. FIG. 6 is a schematic system diagram of the absorption heat exchange system 5. The absorption heat exchange system 5 differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. The absorption heat exchange system 5 is not provided with a heat exchange unit 80 (see FIG. 1), but is provided with a medium temperature heat consumption facility 64. The medium-temperature heat consumption facility 64 is a facility that heats a substance that requires heating by the heat possessed by the second low-temperature fluid FL2, and typically includes a heating facility. When the medium temperature heat consumption facility 64 is a heating facility, the hot water or air used for heating the heating target space corresponds to a substance that requires heating. The middle temperature heat consuming equipment 64 is connected to the other ends of the second low temperature inflow pipe 48 and the second low temperature discharge pipe 49, one of which is connected to the heat transfer tube 42 of the condenser 40. A cooling tower CT may be provided to cool the second low-temperature fluid FL2 flowing out of the medium-temperature heat consumption facility 64 before flowing it into the heat transfer tube 42. Here, the cooling tower CT does not correspond to the medium-temperature heat consumption facility 64 because the atmosphere to which the heat is released does not require heating. When the cooling tower CT is provided, typically, the cooling tower CT is arranged in the bypass pipe 48B, both ends of the bypass pipe 48B are connected to the second low temperature inflow pipe 48 at intervals, and both ends of the bypass pipe 48B are provided. An on-off valve 48v is provided in the second low-temperature inflow pipe 48 between the two, and the opening and closing of the on-off valve 48v is configured so that the second low-temperature fluid FL2 can be switched between not passing through the cooling tower CT and passing through the cooling tower CT. Will be done. Further, by providing a bypass on-off valve 48Bv on the bypass pipe 48B and adjusting the opening degree of the on-off valve 48v and the bypass on-off valve 48Bv to a predetermined opening degree, a part of the second low-temperature fluid FL2 is a cooling tower CT. It may be configured to be able to pass through. Further, regarding the system of the first low temperature fluid FL1, typically, the end of the separation steam pipe 19 and the high temperature heat consumption equipment HF are connected to the steam supply pipe 78 so that the separation steam Fv can be supplied to the high temperature heat consumption equipment HF. The high temperature heat consuming equipment HF and the end of the auxiliary introduction pipe 18s are connected by a return liquid pipe 77 so that the liquid that is connected and flows out from the high temperature heat consuming equipment HF can flow into the separation liquid pipe 18 as the replenishing liquid Fs. To. The liquid first low-temperature fluid FL1 may be supplied to the high-temperature heat consumption facility HF instead of the separation steam Fv. In this case, gas-liquid separation is performed following the absorption heat exchange system 1A (see FIG. 2). The configuration around the vessel 16 can be omitted. The configuration of the absorption heat exchange system 5 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

In the absorption heat exchange system 5 configured as described above, the absorption heat pump cycle between the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 is the absorption heat exchange system 1. It works in the same manner as (see FIG. 1). Further, the flow path and the temperature change of the first low temperature fluid FL1 also operate in the same manner as in the absorption type heat exchange system 1 (see FIG. 1). In the high temperature fluid FH, the flow path and temperature change act in the same manner as the absorption heat exchange system 1 (see FIG. 1) until it flows out from the heat source tube 32 of the regenerator 30, and when it flows out from the heat source tube 32, the absorption heat exchange occurs. It is discharged to the outside of the system 5. The temperature of the second low-temperature fluid FL2 is raised in the heat transfer tube 42 of the condenser 40 in the same manner as in the absorption heat exchange system 1 (see FIG. 1). The second low-temperature fluid FL2 flowing out of the heat transfer tube 42 is supplied to the medium-temperature heat consumption facility 64 via the second low-temperature discharge pipe 49, and the heat is used in the medium-temperature heat consumption facility 64 to lower the temperature, resulting in a second low temperature. It flows into the heat transfer tube 42 again through the inflow tube 48. Here, the temperature at which the second low temperature fluid FL2 flowing through the second low temperature inflow pipe 48 passes through the cooling tower CT is typically the temperature allowed for the fluid flowing into the heat transfer tube 42 of the condenser 40 in the absorption heat pump cycle. This is a case where the second low temperature fluid FL2 having a temperature higher than the upper limit of the above value (for convenience of explanation, hereinafter referred to as “high temperature second low temperature fluid FL2h”) flows out from the medium temperature heat consumption facility 64. When the high temperature second low temperature fluid FL2h passes through the cooling tower CT, the high temperature second low temperature fluid FL2h is absorbed after the entire amount of the high temperature second low temperature fluid FL2h is introduced into the cooling tower CT via the bypass pipe 48B and cooled. It is introduced into the heat transfer tube 42 after the temperature has been reduced to an appropriate temperature for the heat pump cycle. Alternatively, a part of the high-temperature second low-temperature fluid FL2h is introduced into the cooling tower CT via the bypass pipe 48B and cooled, and after merging with the high-temperature second low-temperature fluid FL2h that did not pass through the bypass pipe 48B, the high-temperature second low-temperature fluid FL2h is used. 2 The low temperature fluid FL2h is cooled to an appropriate temperature for the absorption heat pump cycle and introduced into the heat transfer tube 42. On the other hand, when the temperature of the second low temperature fluid FL2 flowing out from the medium temperature heat consumption facility 64 is within the temperature range allowed by the absorption heat pump cycle, the second low temperature fluid FL2 does not pass through the cooling tower CT but is a heat transfer tube. It flows into 42. As described above, the absorption heat exchange system 5 has a relatively simple configuration in which the heat exchange unit 80 as provided in the absorption heat exchange system 1 (see FIG. 1) is omitted, and two fluids having different temperatures are used. Can be supplied to the medium temperature heat consumption facility 64 and, for example, the high temperature heat consumption facility HF.

The medium temperature heat consumption facility 64, the bypass pipe 48B, the cooling tower CT, the on-off valve 48v, and the bypass on-off valve 48Bv, which are the facilities for heating the substance requiring heating, provided in the absorption heat exchange system 5 shown in FIG. , Absorption heat exchange system 1 (see FIG. 1), 1A (see FIG. 2), 2 (see FIG. 3), 3 (see FIG. 4), and 4 (see FIG. 5). The heat exchange systems 1 (see FIG. 1) to 4 (see FIG. 5) may be configured such that two fluids having different temperatures are supplied to the medium temperature heat consumption facility 64 and the high temperature heat consumption facility HF. In this way, the second low-temperature fluid FL2, which has a higher temperature than that of the absorption heat exchange system 5, can be supplied to the medium-temperature heat consumption facility 64, which is a facility for heating a substance that requires heating.

In the above description, it is assumed that the evaporator 20 is a full liquid type, but it may be a flowing liquid film type. When the evaporator is of the flowing liquid film type, a refrigerant liquid supply device for supplying the refrigerant liquid Vf is provided in the upper part of the evaporator can body 21, and in the case of the full liquid type, it is connected to the evaporator can body 21. The end of the refrigerant liquid pipe 45 may be connected to the refrigerant liquid supply device. Further, a pipe and a pump for supplying the refrigerant liquid Vf at the lower part of the evaporator can body 21 to the refrigerant liquid supply device may be provided.

In the above description, it is assumed that the high temperature fluid FH flows from the evaporator 20 to the regenerator 30 in series, but it may also flow from the regenerator 30 to the evaporator 20 in series, and the evaporator 20 and the regenerator 30 It may flow in parallel with. If the high temperature fluid FH flows from the evaporator 20 to the regenerator 30 in series, the probability that the absorbent liquid S will crystallize can be further reduced, and if it flows from the regenerator 30 to the evaporator 20 in series, the COP is generated. It can be improved, and if it flows in parallel with the evaporator 20 and the regenerator 30, not only the liquid but also the steam becomes easier to use as the high temperature fluid FH.

1 Absorption-type heat exchange system 10 Absorber 16 Gas-liquid separator 20 Evaporator 30 Regenerator 40 Condenser 64 Medium-temperature heat consumption equipment 80 Heat exchanger 99 Refrigerator heat exchanger FL1 First low-temperature fluid FL2 Second low-temperature fluid FH High-temperature fluid FHs Partial high temperature fluid Sa Concentrated solution Sw Rare solution Ve Evaporator refrigerant steam Vf Refrigerator liquid Vg Regenerator refrigerant steam

Claims (7)

With an absorption part that raises the temperature of the first fluid to be heated by the absorption heat released when the absorption liquid absorbs the vapor of the refrigerant and becomes a dilute solution with a reduced concentration;
With a condensing part that raises the temperature of the second heated fluid by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
The refrigerant liquid is introduced from the condensed portion, and the latent heat of evaporation required when the introduced refrigerant liquid evaporates to become the vapor of the refrigerant supplied to the absorption portion is taken from the heating source fluid to the heating source. With an evaporative part that lowers the temperature of the fluid;
The dilute solution is introduced from the absorbing portion, and the introduced dilute solution is heated to remove the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration, thereby removing the heat required for producing the concentrated solution from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
Heat between the second heated fluid after the temperature rises in the condensing portion and the heating fluid that raises the temperature of the second heated fluid after the temperature rises in the condensing portion. Equipped with a heat exchange unit for replacement;
Due to the absorption heat pump cycle of the absorbing liquid and the refrigerant, the internal pressure and temperature of the absorbing portion are higher than those of the regenerating portion, and the internal pressure and temperature of the evaporating portion are higher than those of the condensed portion. Consists of;
The heat exchange section is configured to introduce at least one of the heating source fluid after the temperature has dropped in the evaporation section and the heating source fluid after the temperature has dropped in the regeneration section as the heating fluid. rice field;
Absorption heat exchange system. The heat exchange unit is configured to introduce a part of the heat source fluid branched from the heat source fluid before being introduced into the evaporation unit and the regeneration unit as the temperature rising fluid;
The absorption heat exchange system according to claim 1. The flow rate of the heating source fluid flowing into the evaporation section and the regeneration section and the heating flowing into the heat exchange section so that the temperature of the second heated fluid flowing out of the heat exchange section becomes a predetermined temperature. The ratio to the flow rate of the source fluid was set;
The absorption heat exchange system according to claim 2 . A part of the heating source fluid branched from the heating source fluid before being introduced into the evaporation section and the regeneration section was configured to be introduced into the absorption section as the first heated fluid;
The absorption heat exchange system according to any one of claims 1 to 3 . A refrigerant heat exchanger that exchanges heat between the refrigerant liquid conveyed from the condensing unit to the evaporating unit and the heating fluid flowing out of the heat exchange unit is provided;
The absorption heat exchange system according to any one of claims 1 to 4 . With an absorption part that raises the temperature of the first fluid to be heated by the absorption heat released when the absorption liquid absorbs the vapor of the refrigerant and becomes a dilute solution with a reduced concentration;
With a condensing part that raises the temperature of the second heated fluid by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
The refrigerant liquid is introduced from the condensed portion, and the latent heat of evaporation required when the introduced refrigerant liquid evaporates to become the vapor of the refrigerant supplied to the absorption portion is taken from the heating source fluid to the heating source. With an evaporative part that lowers the temperature of the fluid;
The dilute solution is introduced from the absorbing portion, and the introduced dilute solution is heated to remove the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration, thereby removing the heat required for producing the concentrated solution from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
Heat between the second heated fluid after the temperature rises in the condensing portion and the heating fluid that raises the temperature of the second heated fluid after the temperature rises in the condensing portion. Equipped with a heat exchange unit for replacement;
Due to the absorption heat pump cycle of the absorbing liquid and the refrigerant, the internal pressure and temperature of the absorbing portion are higher than those of the regenerating portion, and the internal pressure and temperature of the evaporating portion are higher than those of the condensed portion. Consists of;
A refrigerant heat exchanger that exchanges heat between the refrigerant liquid conveyed from the condensing unit to the evaporating unit and the heating fluid flowing out of the heat exchange unit is provided;
Absorption heat exchange system. It is provided with a gas-liquid separator that introduces the first heated fluid heated by the absorbing portion and separates the liquid and the vapor of the first heated fluid;
The absorption heat exchange system according to any one of claims 1 to 6 .

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