JP2019074271A - Absorption type heat exchange system - Google Patents

Abstract

To provide an absorption type heat exchange system capable of taking out two types of heated fluids having different temperatures.SOLUTION: An absorption type heat exchange system 1 includes: an absorption section 10 for raising a temperature of a first heated fluid FL1 by using absorption heat; a condensation section 40 for raising a temperature of a second heated fluid FL2 by using condensation heat; an evaporation section 20 for depriving a heating source fluid FH of evaporative latent heat to lower a temperature of the heating source fluid FH; a regeneration section 30 for depriving the heating source fluid FH of heat required for converting a diluted solution Sw from the absorption section 10 into a concentrated solution Sa to lower a temperature of the heating source fluid FH; and a heat exchange section 80 for exchanging heat between the second heated fluid FL2 caused to flow out from the condensation section 40 and the temperature-raised fluid FH. An absorption heat pump cycle of the absorption solutions Sa, Sw and refrigerants Ve, Vf, Vg causes an inner pressure temperature of the absorption section 10 and the evaporation section 20 to become higher than that of the regeneration section 30 and the condensation section 40.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorption heat exchange system, and more particularly to an absorption heat exchange system capable of extracting two types of heated fluids 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 flowing out after the heat exchange become a temperature corresponding to the heat exchange between the two (for example, see Patent Document 1) ).

Patent 5498809 gazette (refer to figure 11 grade)

  One of the applications of heat exchangers is to recover waste heat. Exhaust heat is heat that is discarded without being used, so the more heat that can be recovered, the more effective the heat can be used. When there is a demand for two types of fluid having different temperatures on the side of utilizing the recovered heat, if the two types of fluid having different temperatures can be taken out, the recovered heat can be effectively used.

  An object of the present invention is to provide an absorption type heat exchange system which can take out two kinds of heated fluids different in temperature in view of the above-mentioned subject.

  In order to achieve the above object, in the absorption type heat exchange system according to the first aspect of the present invention, as shown, for example, in FIG. 1, the absorbing solution Sa absorbs the vapor Ve of the refrigerant to reduce the concentration thereof. Absorption unit 10 for raising the temperature of the first fluid to be heated FL1 by absorption heat released at the time of Sw; and condensation heat released when the refrigerant vapor Vg condenses to become the refrigerant liquid Vf; Necessary when the refrigerant liquid Vf is introduced from the condensation unit 40 and the condensation unit 40 which raise the temperature of the fluid to be heated FL2 and the introduced refrigerant liquid Vf evaporates and becomes the vapor Ve of the refrigerant supplied to the absorption unit 10 A dilute solution Sw is introduced from the absorbing unit 10 by reducing the temperature of the heating source fluid FH by deducting the latent heat of vaporization from the heating source fluid FH; the introduced dilute solution Sw is heated and the refrigerant from the dilute solution Sw is introduced Increase in concentration by releasing Vg A regenerating unit 30 for reducing the temperature of the heat source fluid FH by depriving the heat source fluid FH of heat necessary to form the concentrated solution Sa; and a second heated fluid after the temperature is increased in the condenser 40 And a heat exchange unit 80 for performing heat exchange between FL2 and a temperature raising fluid FH for raising the temperature of the second heated fluid FL2 after the temperature has risen in the condensation unit 40; The internal pressure and temperature of the absorption unit 10 are higher than that of the regeneration unit 30, and the internal pressure and temperature of the evaporation unit 20 are higher than that of the condensation unit 40 due to the absorption heat pump cycle of Sw and refrigerant Ve, Vf, and Vg. It is configured to be

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

  The absorption heat exchange system according to the second aspect of the present invention is, for example, as shown in FIG. 1, in the absorption heat exchange system 1 according to the first aspect of the present invention, the absorption heat The gas-liquid separator 16 which introduces the first heated fluid FL1 and separates it into the liquid Fr and the vapor Fv of the first heated fluid FL1 is provided.

  With this configuration, it is possible to take out the vapor of the first heated fluid, which is highly useful.

  The absorption heat exchange system according to the third aspect of the present invention is, for example, as shown in FIG. 1, the heat absorption in the absorption 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 is lowered in the evaporation unit 20 and the heat source fluid FH after the temperature is lowered in the regeneration unit 30 as the temperature rising fluid .

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

  The absorption heat exchange system according to the fourth aspect of the present invention is, for example, as shown in FIG. 3, an absorption 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 a temperature rising fluid. ing.

  According to this structure, the temperature of the second heated fluid flowing out of the heat exchange unit can be increased.

  The absorption heat exchange system according to the fifth aspect of the present invention is, for example, as shown in FIG. 3, the heat exchange section 80 in the absorption heat exchange system 2 according to the fourth aspect of the present invention. The flow rate of the heat source fluid FH flowing into the evaporation unit 20 and the regeneration unit 30 and the flow rate of the heat source fluid FHs flowing into the heat exchange unit 80 so that the temperature of the second heated fluid FL2 flowing out from the The ratio to the flow rate is set.

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

  The absorption heat exchange system according to the sixth aspect of the present invention is, for example, as shown in FIG. 4, an 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 heating source fluid FH branched from the heating source fluid FH before being introduced into the evaporation unit 20 and the regeneration unit 30 is introduced into the absorbing unit 10 as the first heated fluid FL1. It is configured.

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

  The absorption heat exchange system according to the seventh aspect of the present invention is, for example, as shown in FIG. 5, an 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 performs heat exchange between the refrigerant liquid Vf conveyed from the condensation unit 40 to the evaporation unit 20 and the temperature increasing fluid FH flowing out from the heat exchange unit 80.

  With this configuration, the temperature of the temperature rising fluid flowing out of the absorption heat exchange system can be lowered, and the amount of heat recovered from the temperature rising 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, as shown, for example, in FIG. 6, the absorbing solution Sa absorbs the vapor Ve of the refrigerant to reduce the concentration thereof. Absorption unit 10 for raising the temperature of the first fluid to be heated FL1 by absorption heat released at the time of Sw; and condensation heat released when the refrigerant vapor Vg condenses to become the refrigerant liquid Vf; Necessary when the refrigerant liquid Vf is introduced from the condensation unit 40 and the condensation unit 40 which raise the temperature of the fluid to be heated FL2 and the introduced refrigerant liquid Vf evaporates and becomes the vapor Ve of the refrigerant supplied to the absorption unit 10 A dilute solution Sw is introduced from the absorbing unit 10 by reducing the temperature of the heating source fluid FH by deducting the latent heat of vaporization from the heating source fluid FH; the introduced dilute solution Sw is heated and the refrigerant from the dilute solution Sw is introduced Concentration was increased by And a regenerating unit 30 for reducing the temperature of the heat source fluid FH by depriving the heat source fluid FH of the heat necessary to form the solution Sa; and an absorption heat pump of the absorbing liquids Sa, Sw and the refrigerants Ve, Vf, Vg By the cycle, 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 condensation unit 40; The medium temperature heat consuming equipment 64 is provided which introduces the second heated fluid FL2 and heats a substance requiring heating with the heat held by the second heated fluid FL2.

  According to this structure, it is possible to take out and use effectively two types of heated fluids having different temperatures.

  According to the present invention, two types of heated fluids having different temperatures can be taken out.

It is a typical systematic diagram of an absorption-type heat exchange system concerning a 1st embodiment of the present invention. It is a typical systematic diagram of the absorption type heat exchange system concerning the modification of the 1st embodiment of the present invention. It is a typical systematic diagram of an absorption-type heat exchange system concerning a 2nd embodiment of the present invention. It is a typical systematic diagram of the absorption-type heat exchange system concerning a 3rd embodiment of the present invention. It is a typical systematic diagram of an absorption-type heat exchange system concerning a 4th embodiment of the present invention. It is a typical systematic diagram of the absorption-type heat exchange system concerning a 5th embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each of the drawings, the same or corresponding members are denoted by the same or similar reference numerals, and the redundant description will be omitted.

  First, an absorption heat exchange system 1 according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic system diagram of the absorption type heat exchange system 1. The absorption type heat exchange system 1 is a system that performs heat exchange between the first low temperature fluid FL1 and the second low temperature fluid FL2 and the high temperature fluid FH using an absorption heat pump cycle of an absorption liquid and a refrigerant. Here, the first low-temperature fluid FL1 and the second low-temperature fluid FL2 are fluids to be raised in temperature in the absorption heat exchange system 1, and the first low-temperature fluid FL1 is a second heated fluid. The low temperature fluid FL2 corresponds to the second heated fluid, respectively. The high temperature fluid FH is a fluid whose temperature is reduced in the absorption heat exchange system 1 and corresponds to a heating source fluid. The absorption-type heat exchange system 1 includes an absorber 10, an evaporator 20, and a regenerator 30 which constitute main devices in which an absorption heat pump cycle of the absorption liquid S (Sa, Sw) and the 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 absorbing liquid is referred to as “dilute solution Sw” or “concentrated solution Sa” according to the property or the position on the heat pump cycle in order to facilitate the distinction on the heat pump cycle. When making etc. unquestionable, it shall be generically called "the absorption liquid S". Similarly, with regard to refrigerants, in order to facilitate discrimination on the heat pump cycle, “evaporator refrigerant vapor Ve”, “regenerator refrigerant vapor Vg”, “refrigerant liquid Vf”, etc. according to the property or the position on the heat pump cycle The term “refrigerant V” is used generically when property and the like are not questioned. In the present embodiment, an LiBr aqueous solution is used as the absorbent S (a mixture of an absorbent and a refrigerant V), and water (H ₂ O) is used as the refrigerant V.

  The absorber 10 internally includes a heat transfer tube 12 that constitutes a flow path of the first low temperature fluid FL 1, and a concentrated solution supply device 13 that supplies the concentrated solution Sa to the surface of the heat transfer tube 12. The absorber 10 generates the heat of absorption when the concentrated solution Sa is supplied from the concentrated solution supply device 13 to the surface of the heat transfer tube 12 and the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve and becomes the dilute solution Sw. The absorption heat is received by the first low temperature fluid FL1 flowing through the heat transfer tube 12, and the first low temperature fluid FL1 is heated.

  The absorption-type heat exchange system 1 according to the present embodiment includes a gas-liquid separator 16 that flows through the heat transfer pipe 12 of the absorber 10 to separate the heated first low-temperature fluid FL1 into a liquid and a vapor. The gas-liquid separator 16 and the heat transfer pipe 12 are connected by a fluid pipe 17 after heating and a separated liquid pipe 18. The post-heating fluid pipe 17 flows through the heat transfer pipe 12 and guides the heated first low-temperature fluid FL1 to the gas-liquid separator 16. The separated liquid pipe 18 guides the separated liquid Fr, which is a liquid after the first low temperature fluid FL1 heated in the heat transfer pipe 12 is separated in the gas-liquid separator 16, to the heat transfer pipe 12. Further, one end of a separation steam pipe 19 is connected to the upper portion (typically, the top portion) of the gas-liquid separator 16. The separated vapor pipe 19 guides the separated vapor Fv, which is the vapor after the heated first low-temperature fluid FL1 is separated in the gas-liquid separator 16 through the heat transfer pipe 12, to the outside of the absorption heat exchange system 1. It is a thing. Further, there is provided a co-introduction pipe 18s for introducing from the outside of the absorption type heat exchange system 1 a replenishing liquid Fs for supplementing the first low temperature fluid FL1 supplied to the outside of the absorption type heat exchange system 1 mainly as steam. ing. The supplemental introduction pipe 18s is connected to the separated liquid pipe 18, and is configured to merge the supplied liquid Fs with the separated liquid Fr flowing through the separated liquid pipe 18. A supplementary liquid pump 18p for pumping the supplementary liquid Fs toward the separated liquid pipe 18 is disposed in the supplementary inlet pipe 18s. The separated liquid Fr flowing through the separated liquid pipe 18 is configured to be introduced into the heat transfer pipe 12 of the absorber 10 as the first low temperature fluid FL1.

  The evaporator 20 has a heat source pipe 22 constituting a flow path of the high temperature fluid FH inside the evaporator can barrel 21. The evaporator 20 does not have a nozzle for dispersing the refrigerant liquid Vf inside the evaporator can barrel 21. For this reason, the heat source pipe 22 is disposed so as to be immersed in the refrigerant liquid Vf stored in the evaporator can barrel 21 (full liquid type evaporator). The evaporator 20 is configured such that the refrigerant liquid Vf around the heat source pipe 22 is evaporated by the heat of the high temperature fluid FH flowing in the heat source pipe 22 to generate the evaporator refrigerant vapor Ve. A refrigerant liquid pipe 45 for supplying the refrigerant liquid Vf into the evaporator can body 21 is connected to the evaporator can body 21.

  The absorber 10 and the evaporator 20 are in communication with each other. By communicating the absorber 10 with 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 pipe 32 through which the high temperature fluid FH for heating the dilute solution Sw flows and a dilute solution supply device 33 for supplying the dilute solution Sw to the surface of the heat source pipe 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 communication pipe 25 in which the high temperature fluid FH flows. A high temperature fluid discharge pipe 39 is connected to an end opposite to the end to which the high temperature fluid communication pipe 25 of the heat source pipe 32 of the regenerator 30 is connected. The high temperature fluid discharge pipe 39 is a pipe constituting a flow path for leading the high temperature fluid FH out of the system. In the regenerator 30, the dilute solution Sw supplied from the dilute solution supply device 33 is heated to the high temperature fluid FH so that the refrigerant V is evaporated from the dilute solution Sw to generate the concentrated solution Sa having an increased concentration. Is configured. The refrigerant V evaporated from the dilute solution Sw is configured to move to the condenser 40 as a regenerator refrigerant vapor Vg.

  The condenser 40 has a heat transfer pipe 42 in which the second low temperature fluid FL 2 flows, inside the condenser can barrel 41. The condenser 40 introduces the regenerator refrigerant vapor Vg generated by the regenerator 30, and the second low temperature fluid FL2 flowing in the heat transfer pipe 42 receives the heat of condensation released when the refrigerant condenses and becomes the refrigerant liquid Vf. 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 pipe 42, and a second low temperature discharge pipe 49 is connected to the other end. The second low temperature inflow pipe 48 supplies the heat transfer pipe 42 with the second low temperature fluid FL2. The second low temperature fluid discharge pipe 49 is for flowing the second low temperature fluid FL 2 heated by the heat transfer pipe 42. The regenerator 30 and the condenser 40 are integrally formed with the can barrel of the regenerator 30 and the condenser can barrel 41 so as to communicate with each other. By connecting the regenerator 30 and the condenser 40, the regenerator refrigerant vapor Vg generated by the regenerator 30 can be supplied to the condenser 40.

  The portion of the regenerator 30 where the concentrated solution Sa is stored and the concentrated solution supply device 13 of the absorber 10 are connected by a concentrated solution pipe 35 through which the concentrated solution Sa flows. The concentrated solution pipe 35 is provided with a solution pump 35p for pressure-feeding the concentrated solution Sa. The portion of the absorber 10 where the dilute solution Sw is stored and the dilute solution supply device 33 are connected by a dilute solution pipe 36 through which the dilute solution Sw flows. The concentrated solution pipe 35 and the diluted solution pipe 36 are provided with a solution heat exchanger 38 for performing heat exchange between the concentrated solution Sa and the diluted solution Sw. The portion of the condenser 40 where 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 disposed in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49, and 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 perform heat exchange. In the present embodiment, the high temperature fluid FH whose temperature is lowered 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 configured of a shell and tube type heat exchanger, but may be a device that performs heat exchange between two fluids, such as a plate type heat exchanger.

  In the absorption type heat exchange system 1, the pressure and temperature inside the absorber 10 become higher than the pressure and temperature inside the regenerator 30 during steady operation, and the pressure and temperature inside the evaporator 20 become 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 components of a type 2 absorption heat pump.

  Continuing to refer to FIG. 1, the operation of the absorptive heat exchange system 1 will be described. First, the absorption heat pump cycle on the refrigerant side will be described. In the condenser 40, the regenerator refrigerant vapor Vg evaporated in the regenerator 30 is received, and the regenerator refrigerant vapor Vg is cooled and condensed by the second low temperature fluid FL2 flowing through the heat transfer pipe 42, and becomes 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 is evaporated to become the evaporator refrigerant vapor Ve. At this time, the high temperature fluid FH loses its heat by the refrigerant liquid Vf and its temperature decreases. The evaporator refrigerant vapor Ve generated in the evaporator 20 moves to the absorber 10 in communication with the evaporator 20.

  The solution side absorption heat pump cycle will now 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 transferred from the evaporator 20. The concentrated solution Sa that has absorbed the evaporator refrigerant vapor Ve is reduced in concentration to be 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 concentrated solution Sa having absorbed the evaporator refrigerant vapor Ve in the absorber 10 is reduced in concentration to become a dilute solution Sw, and is stored in the lower part of the absorber 10. The stored dilute solution Sw flows through the dilute solution pipe 36 toward the regenerator 30 due to the difference in internal pressure between the absorber 10 and the regenerator 30, and the solution heat exchanger 38 exchanges heat with the concentrated solution Sa to make the temperature It falls to the regenerator 30.

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

  Changes in the temperatures of the high temperature fluid FH and the first low temperature fluid FL1 and the second low temperature fluid FL2 in the process of performing the absorption heat pump cycle as described above by the absorbing liquid S and the refrigerant V will be described by way of specific examples. The high temperature fluid FH that has flowed into the heat source pipe 22 of the evaporator 20 at 95 ° C. loses 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 communication 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 is deprived of heat by the dilute solution Sw and the temperature drops to 84 ° C. The high temperature fluid FH whose temperature has been lowered by 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 that has flowed into the heat transfer pipe 42 of the condenser 40 at 32 ° C. obtains condensation heat released when the regenerator refrigerant vapor Vg condenses, and the temperature rises to 50 ° C. The second low temperature fluid FL 2 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 84 ° C. high temperature fluid FH is 74 ° C. The temperature decreases, and the temperature of the 50 ° C. second cryogenic fluid FL 2 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 medium temperature heat. 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 It is suitable if the fluid is of a nature or type that can not be used in equipment that consumes moderate temperature heat. For example, in the case where the high temperature fluid FH is a fluid circulating in the production process and the high temperature fluid FH flowing from the production process into the absorption heat exchange system 1 is removed by heat and then returned to the production process, or The fluid FH is a fluid to be discarded, and the heat is taken away by the absorption heat exchange system 1 to be cooled and then discarded. As equipment that consumes medium temperature heat, a heating equipment typically installed at a relatively short distance can be mentioned. In the absorption type heat exchange system 1, the flow rate of the second low temperature fluid FL2 is about 1/3 of the flow rate of the high temperature fluid FH. In other words, the flow ratio of the second low temperature fluid FL2 to the high temperature fluid FH is about 1: 3. The 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 adjusted automatically or manually by using a valve or the like. When the flow ratio is automatically adjusted using a valve or the like, the valve or the like is typically controlled by the controller.

  Further, the first low temperature fluid FL1 flowing into the heat transfer tube 12 of the absorber 10 at 82 ° C. gets the heat of absorption generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve, and the temperature rises to 110 ° C. . When the first low temperature fluid FL1 is heated by the absorber 10, a part thereof is boiled to be in a gas-liquid mixed state. The first cryogenic fluid FL1 flowing out of the absorber 10 flows into the gas-liquid separator 16 through the fluid pipe 17 after heating. The first low temperature fluid FL1 flowing into the gas-liquid separator 16 is separated into the separated vapor 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. Facilities that consume high temperature heat typically include factory processes and remote heating facilities. Thus, in the absorption type heat exchange system 1, it is possible to take out the separated vapor Fv (first low temperature fluid FL1) which is equal to or higher than the temperature of the high temperature fluid FH to be introduced. On the other hand, the separated liquid Fr separated by the gas-liquid separator 16 flows through the separated liquid pipe 18, and the replenished liquid Fs flowing through the auxiliary inlet pipe 18s joins along the way 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 a facility that consumes high-temperature heat as separated vapor Fv is externally supplied as a make-up liquid Fs.

  As explained 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 that exhibits the function of the type 2 absorption heat pump The 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 through the absorption heat pump cycle of the liquid S and the refrigerant V, and the high temperature fluid is directly transmitted in the heat exchange unit 80. By performing heat exchange between FH and the second low temperature fluid FL2, it is possible to take out two types of heated fluids (first low temperature fluid FL1, second low temperature fluid FL2) having different temperatures. Further, in the absorption type heat exchange system 1, the first low temperature fluid FL1 flowing out of the absorber 10 is separated in the gas-liquid separator 16 by gas-liquid separation and is taken out as the separated vapor Fv. can do. Each of the high temperature fluid FH, the first low temperature fluid FL1, and the second low temperature fluid FL2 may be different in nature or type of fluid from the other one or two, or may be the same.

  Next, with reference to FIG. 2, an absorption heat exchange system 1A according to a modification of the first embodiment of the present invention will be described. FIG. 2 is a schematic diagram of the absorption type 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. The absorption type heat exchange system 1A is configured such that 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 separated vapor pipe 19 of the configuration around this (see FIG. 1) 1), separation liquid pipe 18 (see FIG. 1), and supplemental introduction pipe 18s (see FIG. 1) provided with the supply liquid pump 18p (see FIG. 1) are not provided, and facilities etc. that consume high temperature heat The first low temperature fluid FL1 sent from the source 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 facility. The remaining configuration of the absorption-type heat exchange system 1A is similar to that of the absorption-type heat exchange system 1 (see FIG. 1).

  In the absorption type heat exchange system 1A configured as described above, the absorption heat exchange system between the absorbent 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 way as (see FIG. 1). Moreover, the flow path and temperature change of the high temperature fluid FH also operate in the same manner as the absorption heat exchange system 1 (see FIG. 1). Further, the flow path and temperature change of the second low temperature fluid FL2 also work in the same manner as 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 absorbed heat generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve in the absorber 10 does not evaporate Rises and flows out of the absorber 10 and is supplied to a facility (not shown) that consumes high-temperature heat via the fluid pipe 17 after heating. Thus, the absorption type heat exchange system 1A can take out two kinds of liquids having different temperatures with a simple configuration in which the configuration around the gas-liquid separator 16 (see FIG. 1) is omitted.

  Next, with reference to FIG. 3, an absorption heat exchange system 2 according to a second embodiment of the present invention will be described. FIG. 3 is a schematic system diagram of the absorption type 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 branched from a part of the high temperature fluid FH before being introduced into the evaporator 20 flows out of the regenerator 30 while bypassing the evaporator 20 and the regenerator 30. A high temperature fluid bypass pipe 29 for joining the high temperature fluid FH is provided. One end of the high temperature fluid bypass pipe 29 is connected to a high temperature fluid introduction pipe 24 for introducing the high temperature fluid FH into the heat source pipe 22. The other end of the high temperature fluid bypass 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 out of the system without passing through the heat exchange unit 80. The heat exchange section 80 is replaced by the second low temperature discharge pipe 49 and the high temperature instead of being disposed in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49 in the absorption type heat exchange system 1 (see FIG. 1). The fluid bypass pipe 29 is disposed, and is configured to perform heat exchange between the second cryogenic fluid FL2 flowing through the second cryogenic discharge pipe 49 and the partial hot fluid FHs flowing through the hot fluid bypass pipe 29. ing. The remaining configuration of the absorptive heat exchange system 2 is the same as that of the absorptive 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 absorbent S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 functions in the same manner as the absorption heat exchange system 1 (see FIG. 1). The high temperature fluid FH flowing through the high temperature fluid inlet pipe 24 toward the evaporator 20 is partially branched and flows into the high temperature fluid bypass pipe 29 as a partial high temperature fluid FHs, and the remaining high temperature fluid FH flows into the heat source pipe 22 . The high temperature fluid FH which has flowed into the heat source pipe 22 is deprived of heat by the refrigerant liquid Vf to decrease in temperature, and flows out from the evaporator 20 and flows through the high temperature fluid communication pipe 25 and then into the heat source pipe 32 of the regenerator 30. In the regenerator 30, heat is taken away by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high temperature fluid FH flowing from the high temperature fluid introduction pipe 24 into the high temperature fluid bypass 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 pipe 42 of the condenser 40 obtains condensation heat released when the regenerator refrigerant vapor Vg condenses, the temperature rises, and it flows out of the condenser 40 and exchanges heat It flows into the section 80. In the heat exchange unit 80, heat exchange is performed between the partial high temperature fluid FHs flowing through the high temperature fluid bypass pipe 29 and the second low temperature fluid FL2 flowing through the second low temperature exhaust pipe 49, and the temperature of the partial high temperature fluid FHs decreases. , The temperature of the second low temperature fluid FL2 rises. The partial high temperature fluid FHs whose temperature has been lowered in the heat exchange unit 80 joins the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 via the high temperature fluid bypass pipe 29 and is discharged from the absorption 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 a facility (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 in the same manner as the absorption heat exchange system 1 (see FIG. 1), and the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve in the absorber 10. The temperature rises due to absorption heat generated during the process, and the absorber 10 is discharged to flow into the gas-liquid separator 16 to be separated into the separated vapor Fv and the separated liquid Fr, and the separated vapor Fv is a high temperature heat Is supplied to a facility (not shown) that consumes the water, and the separated liquid Fr flows into the heat transfer pipe 12 again as the first low temperature fluid FL1 after the necessary replenishment liquid Fs is merged.

  According to the absorption type heat exchange system 2, the heat exchange unit 80 according to the ratio of the flow rate of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 into the heat source pipe 22 and the flow rate of the high temperature fluid bypass pipe 29. The temperature of the second low-temperature fluid FL2 supplied to the facility that flows out and consumes the medium temperature heat 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 bypass pipe 29 so that the temperature of the second low temperature fluid FL2 flowing out of the heat exchange unit 80 becomes a predetermined temperature. The ratio to the flow rate can be set. In this case, the flow rate ratio may be fixed by using a pipe, an orifice, or the like of a size adopted in accordance with a predetermined value for each of the heat source pipe 22 and the high temperature fluid bypass pipe 29. It may be configured to be adjustable automatically or manually by using a valve or the like placed at any position of. Further, the temperature of the partial high temperature fluid FHs that is the heating side fluid of the heat exchange unit 80 in the present embodiment is the high temperature fluid FH that 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 in the case of the absorption heat exchange system 1 (see FIG. 1). . Although not illustrated, in addition to the configuration of the absorption type heat exchange system 2, a heat exchange unit 80 disposed in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49 as shown in FIG. Two heat exchange units 80 may be provided. In this case, the connection portion of the high temperature fluid bypass pipe 29 to the high temperature fluid discharge pipe 39 is the upstream side of the heat exchange unit 80 disposed in the high temperature fluid discharge pipe 39 and the second low temperature discharge pipe 49. It is preferable that heat exchange be 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 after the. 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. When configured to exchange heat with the flowing partial hot fluid FHs, it may be heated first with the hot fluid FH and then with the partial hot fluid FHs whose temperature is higher than the hot fluid FH.

  Next, with reference to FIG. 4, an absorption heat exchange system 3 according to a third embodiment of the present invention will be described. FIG. 4 is a schematic system diagram of the absorption type 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 causes a part of the high temperature fluid FH branched from the high temperature fluid FH before being introduced into the evaporator 20 to flow into the heat transfer tube 12 of the absorber 10 as the first low temperature fluid FL1. An inflow tube 15 is provided. One end of the branched fluid inflow pipe 15 is connected to a high temperature fluid inlet pipe 24 for introducing the high temperature fluid FH into the heat source pipe 22. The other end of the branch fluid inflow pipe 15 is connected to the end of the heat transfer pipe 12 opposite to the end to which the post-heating fluid pipe 17 is connected. The remaining configuration of the absorption-type heat exchange system 3 is the same as that of the absorption-type heat exchange system 1A (see FIG. 2).

  In the absorption type heat exchange system 3 configured as described above, 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 is the absorption heat exchange system 1A. It works in the same way as (see Figure 2). Further, the flow path and temperature change of the second low temperature fluid FL2 also operate in the same manner as the absorption heat exchange system 1A (see FIG. 2). The high temperature fluid FH flowing through the high temperature fluid inlet pipe 24 toward the evaporator 20 branches partially and flows into the branch 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 which has flowed into the heat source pipe 22 is deprived of heat by the refrigerant liquid Vf to decrease in temperature, and flows out from the evaporator 20 and flows through the high temperature fluid communication pipe 25 and then into the heat source pipe 32 of the regenerator 30. In the regenerator 30, heat is taken away by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high temperature fluid FH which has flowed out of the regenerator 30 flows through the high temperature fluid discharge pipe 39 and exchanges heat with the second low temperature fluid FL2 in the heat exchange section 80, and the temperature is lowered. Ru. On the other hand, the first low temperature fluid FL1 (part of the high temperature fluid FH branched) which has flowed into the branch fluid inflow pipe 15 from the high temperature fluid inlet pipe 24 flows into the heat transfer pipe 12 of the absorber 10 and is concentrated in the absorber 10 A facility that obtains the absorbed heat generated when the solution Sa absorbs the evaporator refrigerant vapor Ve, the temperature rises and flows out the absorber 10, and consumes high-temperature heat through the fluid pipe 17 after heating (Shown). As described above, in the absorption heat exchange system 3, since 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, The temperature of the first low-temperature fluid FL1 flowing out of the vessel 10 can be higher than the temperature of the high-temperature fluid FH before being introduced into the evaporator 20.

  Next, with reference to FIG. 5, an absorption heat exchange system 4 according to a fourth embodiment of the present invention will be described. FIG. 5 is a schematic system diagram of the absorption type 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-type heat exchange system 4 includes a refrigerant heat exchanger 99 in addition to the configuration of the absorption-type heat exchange system 1 (see FIG. 1). The refrigerant heat exchanger 99 is a device for performing heat exchange between the refrigerant liquid Vf traveling from the condenser 40 to the evaporator 20 and the high temperature fluid FH flowing out from the heat exchange unit 80. The refrigerant heat exchanger 99 is disposed in the refrigerant liquid pipe 45 downstream of the refrigerant pump 46 and the high temperature fluid discharge pipe 39 downstream 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 remaining configuration of the absorption-type heat exchange system 3 is the same as that of the absorption-type 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 of the absorbent 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, and the absorption heat It works in the same way as the switching system 1 (see FIG. 1). The flow path and temperature change of the high temperature fluid FH acts in the same manner as the absorption heat exchange system 1 (see FIG. 1) until it flows out from the heat exchange unit 80. The flow path and temperature change of the first cryogenic fluid FL1 and the second cryogenic fluid FL2 operate in the same manner as the absorption heat exchange system 1 (see FIG. 1). And in absorption type heat exchange system 4 provided with refrigerant heat exchanger 99, heat exchange is performed between refrigerant liquid Vf which goes from condenser 40 to evaporator 20, and high temperature fluid FH which flowed out from heat exchange part 80. The temperature of the refrigerant liquid Vf rises, and the temperature of the high temperature fluid FH falls. The temperature of the refrigerant liquid Vf flowing out of the refrigerant heat exchanger 99 rises and flows into the evaporator 20, so the amount of heat necessary for evaporation in the evaporator 20 can be suppressed, and the temperature drops accordingly. The amount of heat held by the high-temperature fluid FH 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 high temperature fluid FH flowing out of the refrigerant heat exchanger 99 is lowered in temperature and discharged from the absorption heat exchange system 4, thereby increasing the heat recovery of the high temperature fluid FH in the absorption heat exchange system 4. it can. The refrigerant heat exchanger 99 should be installed in each of the absorption heat exchange system 1A (see FIG. 2), the absorption heat exchange system 2 (see FIG. 3), and the absorption heat exchange system 3 (see FIG. 4). You can also.

  Next, an absorption heat exchange system 5 according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic system diagram of the absorption type 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. In the absorption type heat exchange system 5, the heat exchange unit 80 (see FIG. 1) is not provided, and the medium heat consumption equipment 64 is provided. The medium-temperature heat-consuming facility 64 is a facility that heats a substance that needs to be heated by the heat held by the second low-temperature fluid FL2, and typically includes a heating facility. When the medium heat consumption equipment 64 is a heating equipment, warm water or air used to heat the space to be heated corresponds to a substance that requires heating. The other end of each of the second low temperature inflow pipe 48 and the second low temperature discharge pipe 49 whose one end is connected to the heat transfer pipe 42 of the condenser 40 is connected to the medium temperature heat consuming equipment 64. A cooling tower CT may be provided to cool the second low temperature fluid FL2 flowing out of the medium temperature heat consuming facility 64 before it flows into the heat transfer tube. Here, the cooling tower CT does not correspond to the medium heat consumption equipment 64 because the atmosphere to which the heat is discharged does not require heating. When the cooling tower CT is provided, typically, the cooling tower CT is disposed in the bypass pipe 48B, both ends of the bypass pipe 48B are connected to the second low temperature inlet pipe 48 at intervals, and both ends of the bypass pipe 48B The second low temperature inflow pipe 48 between them is provided with an on-off valve 48v, and it is configured to be able to switch between passing and not passing the second low-temperature fluid FL2 through the cooling tower CT by opening and closing the on-off valve 48v. Be done. Furthermore, a bypass on-off valve 48Bv is provided in the bypass pipe 48B, and a part of the second low-temperature fluid FL2 is the cooling tower CT by adjusting the opening degree of the on-off valve 48v and the bypass on-off valve 48Bv to a predetermined opening degree. May be configured to pass through. Also, for the system of the first low temperature fluid FL 1, typically, the end of the separated steam pipe 19 and the high temperature heat consuming facility HF are steam feeding pipes 78 so that the separated steam Fv can be supplied to the high temperature heat consuming facility HF. The high temperature heat consuming facility HF and the end of the supplemental inlet tube 18s are connected by a return fluid pipe 77 so that the liquid flowing out of the high temperature heat consuming facility HF can be made to flow into the separated liquid pipe 18 as the replenished liquid Fs. Ru. Note that instead of the separated vapor Fv, the first low temperature fluid FL1 of liquid may be supplied to the high temperature heat consuming facility HF, and in this case, the gas-liquid separation is performed according to the absorption type heat exchange system 1A (see FIG. 2) The configuration around the vessel 16 can be omitted. The remaining configuration of the absorptive heat exchange system 5 is similar to that of the absorptive heat exchange system 1 (see FIG. 1).

  In the absorption type heat exchange system 5 configured as described above, the absorption heat exchange system 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 way as (see FIG. 1). Further, the flow path and temperature change of the first low temperature fluid FL1 also operate in the same manner as the absorption heat exchange system 1 (see FIG. 1). Until the high temperature fluid FH flows out of the heat source pipe 32 of the regenerator 30, the flow path and temperature change act in the same manner as the absorption heat exchange system 1 (see FIG. 1). It is discharged out of the system 5. The second low temperature fluid FL2 is heated in the heat transfer tube 42 of the condenser 40 in the same manner as the absorption heat exchange system 1 (see FIG. 1). The second low temperature fluid FL2 that has flowed out of the heat transfer pipe 42 is supplied to the medium heat consumption facility 64 through the second low temperature discharge pipe 49, and heat is used in the medium temperature heat consumption facility 64 to lower the temperature. It flows into the heat transfer pipe 42 again via the inflow pipe 48. Here, the temperature of the fluid flowing into the heat transfer tube 42 of the condenser 40 in the absorption heat pump cycle that the second low temperature fluid FL2 flowing through the second low temperature inlet tube 48 passes through the cooling tower CT is typically a temperature that is acceptable The second low temperature fluid FL2 (hereinafter, referred to as "high temperature second low temperature fluid FL2h" for convenience of explanation) having a temperature higher than the upper limit value of the above flows out from the medium temperature heat consuming facility 64. When the high temperature second low temperature fluid FL2h passes through the cooling tower CT, 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, the high temperature second low temperature fluid FL2h is absorbed After the temperature is reduced to an appropriate temperature for the heat pump cycle, it is introduced into the heat transfer tube. Alternatively, after 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 joins with the high-temperature second low-temperature fluid FL2h not passing through the bypass pipe 48B, 2) The low temperature fluid FL2h is reduced to the 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 of the medium-temperature heat consuming facility 64 is within the temperature range that the absorption heat pump cycle allows, the second low-temperature fluid FL2 does not pass through the cooling tower CT and the heat transfer tube It flows into 42. As described above, in the absorption heat exchange system 5, two fluids having different temperatures with 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. Can be supplied to the medium heat consumption equipment 64 and, for example, the high temperature heat consumption equipment HF.

  The medium-temperature heat-consuming equipment 64, which is a facility for heating a substance requiring heating, the bypass pipe 48B, the cooling tower CT, the on-off valve 48v, and the bypass on-off valve 48Bv that are included in the absorption type heat exchange system 5 shown in FIG. , Absorption heat exchange systems 1 (see FIG. 1), 1A (see FIG. 2), 2 (see FIG. 3), 3 (see FIG. 4), 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 heat consumption facility 64 and the high temperature heat consumption facility HF. In this way, it is possible to supply the second low-temperature fluid FL2 whose temperature is higher than that of the absorption heat exchange system 5 to the medium-temperature heat-consuming equipment 64 which is a facility that heats a substance requiring heating.

  In the above description, although the evaporator 20 is full liquid type, it may be falling liquid film type. In the case where the evaporator is a falling liquid film type, a refrigerant liquid supply device for supplying the refrigerant liquid Vf is provided in the upper part in the evaporator can barrel 21 and connected to the evaporator can barrel 21 in the case of full liquid type. The end portion of the refrigerant liquid pipe 45 may be connected to the refrigerant liquid supply device. Moreover, you may provide piping and a pump which supply the refrigerant liquid Vf of the lower part of the evaporator can-drum 21 to a refrigerant liquid supply apparatus.

  In the above description, the high temperature fluid FH flows in series from the evaporator 20 to the regenerator 30. However, the high temperature fluid FH may flow in series from the regenerator 30 to the evaporator 20, and the evaporator 20 and the regenerator 30 Flow in parallel. If the high temperature fluid FH flows in series from the evaporator 20 to the regenerator 30, the probability that the absorbing liquid S crystallizes can be further reduced, and if it flows in series from the regenerator 30 to the evaporator 20, COP It can be improved, and if it flows in parallel to the evaporator 20 and the regenerator 30, not only the liquid but also the vapor becomes easier to use as the high temperature fluid FH.

DESCRIPTION OF SYMBOLS 1 absorption type heat exchange system 10 absorber 16 gas-liquid separator 20 evaporator 30 regenerator 40 condenser 64 medium temperature heat consumption installation 80 heat exchange part 99 refrigerant heat exchanger FL1 1st low temperature fluid FL2 2nd low temperature fluid FH high temperature fluid FHs Partial high temperature fluid Sa Concentrated solution Sw Dilute solution Ve Evaporator refrigerant vapor Vf refrigerant liquid Vg regenerator refrigerant vapor

Claims (8)

An absorbing section that raises the temperature of the first fluid to be heated by the absorption heat released when the absorbing liquid absorbs the vapor of the refrigerant and becomes a dilute solution having a lowered concentration;
A condensation unit that raises the temperature of the second fluid to be heated by the heat of condensation released when the refrigerant vapor condenses into a refrigerant liquid;
The heat source is introduced by introducing the refrigerant liquid from the condensation section, and removing the latent heat of vaporization necessary when the introduced refrigerant liquid evaporates and becomes vapor of the refrigerant supplied to the absorption section. An evaporation unit for reducing the temperature of the fluid;
The dilute solution is introduced from the absorbing portion, and the introduced dilute solution is heated to separate the refrigerant from the dilute solution to thereby remove heat necessary for forming a concentrated solution having an increased concentration from the heating source fluid. A regeneration unit for reducing the temperature of the heating source fluid;
Heat is generated between the second fluid to be heated after the temperature rises in the condenser and the temperature raising fluid to raise the temperature of the second fluid after the temperature rises in the condensation Equipped with a heat exchange unit to carry out replacement;
By the absorption heat pump cycle of the absorption liquid and the refrigerant, the pressure and temperature of the absorption unit are higher than that of the regeneration unit, and the pressure and temperature of the evaporation unit are higher than that of the condensation unit. Configured;
Absorption heat exchange system. A gas-liquid separator that introduces the first heated fluid heated by the absorption unit and separates the first heated fluid into liquid and vapor;
The absorption heat exchange system according to claim 1. The heat exchange unit is configured to introduce at least one of the heat source fluid after the temperature is lowered in the evaporation unit and the heat source fluid after the temperature is lowered in the regeneration unit as the temperature rising fluid. T;
The absorption heat exchange system according to claim 1 or 2. 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-type heat exchange system according to any one of claims 1 to 3. The flow rate of the heat source fluid flowing into the evaporation unit and the regeneration unit and the heating flowing into the heat exchange unit so that the temperature of the second heated fluid flowing out from the heat exchange unit becomes a predetermined temperature The ratio to the flow rate of the source fluid has been set;
The absorption heat exchange system according to claim 4. The heating source fluid branched from the heating source fluid before being introduced into the evaporation unit and the regeneration unit is introduced into the absorption unit as the first heated fluid;
The absorption-type heat exchange system according to any one of claims 1 to 5. A refrigerant heat exchanger for performing heat exchange between the refrigerant liquid transported from the condensation section to the evaporation section and the temperature-rising fluid flowing out of the heat exchange section;
The absorption-type heat exchange system according to any one of claims 1 to 6. An absorbing section that raises the temperature of the first fluid to be heated by the absorption heat released when the absorbing liquid absorbs the vapor of the refrigerant and becomes a dilute solution having a lowered concentration;
A condensation unit that raises the temperature of the second fluid to be heated by the heat of condensation released when the refrigerant vapor condenses into a refrigerant liquid;
The heat source is introduced by introducing the refrigerant liquid from the condensation section, and removing the latent heat of vaporization necessary when the introduced refrigerant liquid evaporates and becomes vapor of the refrigerant supplied to the absorption section. An evaporation unit for reducing the temperature of the fluid;
The dilute solution is introduced from the absorbing portion, and the introduced dilute solution is heated to separate the refrigerant from the dilute solution to thereby remove heat necessary for forming a concentrated solution having an increased concentration from the heating source fluid. And a regeneration unit for reducing the temperature of the heating source fluid;
By the absorption heat pump cycle of the absorption liquid and the refrigerant, the pressure and temperature of the absorption unit are higher than that of the regeneration unit, and the pressure and temperature of the evaporation unit are higher than that of the condensation unit. Configured;
Furthermore, the medium temperature heat consuming facility is provided which introduces the second heated fluid that has flowed out of the condensing unit and heats a substance that requires heating with the heat held by the second heated fluid;
Absorption heat exchange system.

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