JP2004053085A - Triple effect absorbing type freezing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a device compact by devising layout of apparatus in a triple effect absorbing type freezing device. <P>SOLUTION: In a triple effect absorbing type freezing device, a first apparatus layout group X<SB>1</SB>is composed by combining an absorber A, an evaporator E, a condenser C and a low temperature regenerator G<SB>1</SB>, a second apparatus layout group X<SB>2</SB>is composed by combining a middle temperature regenerator G<SB>2</SB>and a high temperature regenerator G<SB>3</SB>, and the second apparatus layout group X<SB>2</SB>is arranged in the side of the first apparatus layout group X<SB>1</SB>. Consequently, dead space is reduced and whole device is made compact. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a triple effect absorption refrigeration apparatus including three regenerators having different operating temperatures.
[0002]
[Prior art]
In general, an absorption refrigerating apparatus has a condenser, an evaporator, an absorber, and a regenerator as basic components, and these components are sequentially and operatively connected by a solution piping system and a refrigerant piping system. You.
[0003]
In such an absorption refrigeration apparatus, the diluted solution generated in the absorber is heated and concentrated in a regenerator to form a concentrated solution, which is further refluxed to the absorber, while the concentrated solution is heated and concentrated in the regenerator. The generated refrigerant vapor is condensed by a condenser into a liquid refrigerant, and the liquid refrigerant is evaporated in an evaporator, and the generated refrigerant vapor is absorbed in a concentrated solution in the absorber to generate a dilute solution. Thus, a circulation cycle of the absorbing solution and the refrigerant is realized.
[0004]
[Problems to be solved by the invention]
By the way, it is known that the most effective way to improve the performance of an absorption refrigeration system is to increase the thermal efficiency of a solution / refrigerant circulation system. It has been proposed to provide (for example, three) and repeatedly reuse heat of one external heat source. That is, a plurality of regenerators having different operating temperatures are provided, and refrigerant vapor generated by heating a high-temperature regenerator operating at a high temperature is introduced into a low-temperature regenerator operating at a low temperature, and is introduced into the low-temperature regenerator. It is used as a heat source for heating the regenerator.
[0005]
For example, a triple-effect absorption refrigeration system has three regenerators (ie, a high-temperature regenerator, a medium-temperature regenerator, and a low-temperature regenerator) having different operating temperatures as described above. The number of regenerators is larger than in the case of utility. Then, if the arrangement of the absorber, the evaporator, the condenser, and the regenerator is not devised, the entire absorption refrigeration apparatus may be large.
[0006]
The present invention has been made in view of the above points, and has as its object to reduce the size of a triple effect absorption refrigeration apparatus by devising the arrangement of the apparatuses.
[0007]
[Means for Solving the Problems]
In the present invention, as the first means for solving the above problems, a condenser C, an evaporator E, absorber A and the working temperature is different three regenerator G ₃ ~G ₁ solution piping system and the refrigerant pipe and operatively connected with the system constitute a circulation cycle, the absorbent solution using an external heat source J in the high temperature generator G ₃ a are allowed heated to boiling to generate refrigerant vapor, using heat of condensation of the refrigerant vapor wherein at moderate temperatures regenerator G ₂ absorbing solution allowed heated to boiling to generate refrigerant vapor, so as to generate a refrigerant vapor said low temperature regenerator G ₁ absorption solution allowed heated to boiling with heat of condensation of the refrigerant vapor in the configuration the triple effect absorption refrigerating apparatus, the absorber a, while constituting the evaporator E, the condenser C and the low temperature generator first device arranged groups X ₁ collectively the G _1, medium temperature regenerator _{G 2} and the high-temperature regenerator G ₃ collectively with configuring the second device arranged group X _2, are arranged the second device arranged groups X ₂ to the side of said first device arranged group X _1.
[0008]
By the structure described above, various devices constituting the absorption refrigerating apparatus (i.e., the absorber A, the evaporator E, the condenser C, the low temperature regenerator G _1, medium temperature regenerator G _2, the high-temperature regenerator G ₃ ) Are collectively arranged in two adjacent device arrangement groups X ₁ and X ₂ , so that a dead space can be reduced and the entire apparatus can be made compact. The first device arranged groups X ₁ on one end side (i.e., back side) because the device is no longer present, the evaporator E, absorber A, maintenance space of the condenser C (e.g., cleaning of the heat transfer tube, exchange Etc.) can be easily secured.
[0009]
In the present invention, further, as a second means for solving the above problems, in a triple effect absorption refrigeration system including the first means, and employs a flow-through regenerator as said high temperature generator G ₃ the high temperature generator G _3, while positioned adjacent to one end of said first device arranged group X _1, the intermediate temperature regenerator G _2, the high temperature generator G ₃ and the first equipment arrangement group X can ₁ and also be arranged along the said first device arranged groups X ₁ in the space surrounded by, when configured as such, the high-temperature regenerator G ₃ a first device arranged groups X ₁ and space surrounded (i.e., dead space) can be arranged mesophilic regenerator G ₂ in. Therefore, the size of the apparatus can be further reduced.
[0010]
In the present invention, further, as a third means for solving the above problems, in a triple effect absorption refrigeration system including the second means, the downward medium temperature regenerator G _2, wherein each regenerator G It is also possible to arrange _three solution heat exchangers H _{1 to} H ₃ for recovering the heat of each of the concentrated solutions L _{1 to} L ₃ generated in _{1 to} G ₃ to the absorption solution side. when configured, will be able to place the solution heat exchanger H ₁ to H ₃ by utilizing the dead space formed below the intermediate temperature regenerator G _2, it is possible to further compact apparatus.
[0011]
According to the present invention, as a fourth means for solving the above-mentioned problem, in the triple effect absorption refrigeration apparatus including the first, second, or third means, the first equipment arrangement group X ₁ and the condensation in the absorber a and the located above the evaporator unit U ₁ of the first unit U ₁ and said 1 E formed by the housing and a predetermined container 2 in a predetermined container 1 can also be constituted by a vessel C and the low temperature regenerator G ₁ second unit U ₂ which is formed by accommodating, when configured to do so, approximately equal absorber pressure a and the evaporator E and the low temperature regenerator G ₁ and the condenser C can be housed in the containers 1 and 2, respectively, to form a unit, which contributes to the downsizing of the _first equipment arrangement group X1.
[0012]
According to the present invention, as a fifth means for solving the above-mentioned problem, in a triple effect absorption refrigeration apparatus provided with the fourth means, the absorber A and the evaporator constituting the _first unit U1 are provided. The device E may be a two-stage absorption cycle in which the low-pressure side and high-pressure side absorbers A ₁ and A ₂ and the low-pressure side and high-pressure side evaporators E ₁ and E ₂ are arranged in one vessel 1. With such a configuration, the efficiency of the refrigeration cycle can be improved.
[0013]
According to the present invention, there is provided a triple effect absorption refrigerating apparatus including the first, second, third, fourth or fifth means as a sixth means for solving the above problems. during the first device arranged groups X ₁ and the second device arranged group X _2, you can place the exhaust heat recovery device K for latent heat recovery external waste heat J with the absorption solution and so configured If, because so that the exhaust heat recovery device K is positioned near the condenser C and the low temperature regenerator G _1, it is possible to reduce the steam pressure loss and improve the exhaust heat recovery rate.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to some preferred embodiments with reference to the accompanying drawings.
[0015]
First Embodiment FIGS. 1 to 3 show a triple effect absorption refrigeration apparatus according to a first embodiment of the present invention.
[0016]
This triple effect absorption refrigeration apparatus is an absorption refrigeration apparatus using water as a refrigerant and lithium bromide as an absorbing liquid, and includes one condenser C, absorber A, evaporator E, and three condensers. The solution heat exchangers H ₃ , H ₂ , H ₁ and the regenerators G ₃ , G ₂ , G ₁ are operatively connected by a solution piping system and a refrigerant piping system to form a circulation cycle of the refrigerant and the absorbing solution. ing.
[0017]
The evaporator E is provided with a heat exchange part 7 for passing the liquid to be cooled We, and the absorber A is for heat exchange through the cooling water Wa for removing the absorption heat generated in the absorber A. The condenser C is provided with a heat exchange unit 11 through which the cooling water Wa passes.
[0018]
Each of the regenerators G ₃ , G ₂ , and G ₁ is for heating and concentrating an absorption solution containing a refrigerant to a high-concentration solution sequentially, and the operating temperature between them is high. different and most high-temperature regenerator G ₃ to operate at high temperatures are the flow-through regenerator to be described later, the intermediate temperature regenerator G ₂ which operates at moderate temperatures is configured with a solution heating unit 9, and most low temperature low-temperature regenerator G ₁ to operation configured with a solution heating unit 10. Incidentally, the intermediate temperature regenerator G ₂ and the low temperature regenerator G ₁ solution heating unit 9 is a liquid Gasu heat exchange.
[0019]
The high temperature generator _{G 3} are, as shown in FIG. 3, are connected a number of conduits 14, 14 ... arranged in the virtual cylindrical between annular upper and lower headers 12 and 13, these conduits 14, 14, -It is a multi-tube once-through regenerator configured to supply the combustion heat of the gas burner 15 therein. Reference numeral 16 denotes a blower for pneumatic feeding, 17 denotes a gas-liquid separator connected to the upper header 12, and 18 denotes an exhaust gas outlet.
[0020]
In this high-temperature regenerator G _3, dilute solution La introduced into the lower header 13 is heated to boiling by the heat of combustion of the gas burner 15 in the conduit 14, 14 ..., the gas-liquid separator in the gas-liquid mixed state from upper header 12 is sent to 17 where it is separated into the concentrated solution L ₃ and the refrigerant vapor R _3, a part of the concentrated solution L ₃ is refluxed to the lower header 13, the remaining concentrated solution L _3, as described later, after having been mixed with the low-temperature concentrated solution L ₁ flowing from the low temperature regenerator G _1, it is fed to the absorber a. The refrigerant vapor R ₃ is sent to the solution heating unit 9 of the intermediate temperature regenerator G _2.
[0021]
Each solution heat exchanger _{H 1,} H 2, _{H 3,} said each regenerator _{G 1,} G 2, low-temperature concentrated solution _{L 1} which is generated by _{G 3,} intermediate temperature concentrated solution _{L 2} and hot concentrated solution _{L 3} It is for recovering the heat of each to the dilute solution La side, and is generally a shell and tube type heat exchanger, but may be constituted by another type, for example, a plate type heat exchanger. .
[0022]
These devices are operatively connected as follows by a solution piping system and a refrigerant piping system.
[0023]
That is, the liquid refrigerant Rc generated in the condenser C is supplied to the evaporator E side, and the liquid refrigerant Rc supplied to the evaporator E is sprayed to the heat exchange unit 7. Cooling water Wa flowing into the heat exchanger 8, absorbs the absorption heat in the heat exchanging portion 8, the cooling water Wa flowing into the heat exchanger 11, the refrigerant vapor R ₁ that is transported from the low temperature regenerator G ₁ Is cooled and condensed. The liquid to be cooled (water) We flowing into the heat exchange unit 7 is cooled by the heat of evaporation of the refrigerant Re. Further, the vaporized refrigerant Re generated in the evaporator E by spraying to the heat exchange unit 7 is directly transferred to the absorber A side.
[0024]
Wherein the bottom of the absorber A, and dilute solution pipe 21 having a solution pump LP is connected, the rare solution pipe 21, after passing through the heated side of the low-temperature solution heat exchanger H _1, the first branch It is branched into two paths, a pipe 21A and a second branch pipe 21B. First branch pipe 21A, while connected to the high-temperature regenerator G ₃ through the heated side of the high-temperature solution heat exchanger H _3, the second branch pipe 21B is the intermediate temperature solution heat exchanger H ₂ under through the heating side is connected to the intermediate temperature regenerator G _2. Also, hot solution pipe 27 for guiding the high-temperature concentrated solution L ₃ flowing out of the high temperature generator G ₃ are, are merged connected to the cold solution pipe 25 for guiding the cold concentrated solution L ₁ flowing from the low temperature regenerator G _1, low temperature solution pipe 25 is connected to the absorber a through a heated side of the low-temperature solution heat exchanger H _1.
[0025]
Medium temperature solution pipe 26 is connected to the intermediate temperature regenerator G ₂ and guides the medium-temperature concentrated solution L ₂ flowing out of the middle temperature regenerator G ₂ is, the low temperature generator through the heating side of the intermediate temperature solution heat exchanger H ₂ It is connected to G _1.
[0026]
The gas-liquid separator 17 in the high temperature generator G ₃ are, it is connected to the inlet side of the solution heating unit 9 in the intermediate temperature regenerator G ₂ through the high-temperature steam piping 24.
[0027]
The gas chamber side of the intermediate temperature regenerator G ₂ is, are connected via a medium-temperature steam piping 23 to the inlet side of the solution heating unit 10 in the low temperature regenerator G _1.
[0028]
The low-temperature regenerator G ₁ refrigerant vapor R ₁ generated in is transferred to the condenser C via the low-temperature steam piping 22.
[0029]
The outlet side of the solution heating unit 10 in the low temperature regenerator G ₁ is connected to the condenser C through the refrigerant drain pipe 28.
[0030]
The refrigerant drain pipe 29 connected to the outlet side of the intermediate temperature regenerator wherein the G ₂ solution heating unit 9 is joined to the intermediate temperature steam pipe 23.
[0031]
This triple-effect absorption refrigeration apparatus forms a circulation cycle of the refrigerant and the absorption solution by adopting the above-described device arrangement and path configuration.
[0032]
Next, the operation cycle of the triple effect absorption refrigeration system will be specifically described.
[0033]
Dilute solution La is delivered by solution pump LP from the absorber A is branched into two paths after passing through the heated side of the low-temperature solution heat exchanger H _1, one is a high temperature solution heat exchanger H ₃ through the heated side flows into the high-temperature regenerator G _3, the other flows through the heated side of the intermediate temperature solution heat exchanger H ₂ in the intermediate temperature regenerator G _2.
[0034]
In the high-temperature regenerator G _3, it is heated and concentrated by the combustion heat of the gas burner 15, flows out as a high-temperature concentrated solution L _3, and passes through the heating side of the high-temperature solution heat exchanger H ₃ . At this time, in the hot solution heat exchanger H _3, heat exchange is performed between the high-temperature concentrated solution L ₃ of the heating side and a rare solution La of the heated side (heat recovery), the rare solution La is preheated flowing into the high-temperature regenerator G ₃ in the state.
[0035]
Meanwhile, medium temperature regenerator G ₂ supplied dilute solution La, said high-temperature regenerator is heated enriched from G ₃ side by the refrigerant vapor R ₃ flowing into the solution heating unit 9, and a medium temperature concentrated solution L ₂ runoff and, through the heating side of the intermediate temperature solution heat exchanger H ₂ flows into the low temperature regenerator G _1. At this time, the medium temperature solution heat exchanger H _2, heat exchange is performed between the medium-temperature concentrated solution L ₂ of the heating side and a rare solution La of the heated side (heat recovery), the rare solution La is preheated wherein sent to the medium-temperature regenerator G ₂ in the state.
[0036]
Moreover, the medium-temperature concentrated solution L ₂ which has flowed into the low-temperature regenerator G ₁ is heated and concentrated by the refrigerant vapor R ₂ flowing into the solution heating unit 10 from the intermediate temperature regenerator G ₂ side in the cold regenerator G _1, low flows become a concentrated solution L _1.
[0037]
Then, the low-temperature strong solution L ₁ flowing from the low temperature regenerator G _1, the become a concentrated solution Lm merges with a high temperature concentrated solution L ₃ flowing out of the high-temperature regenerator G _3, the low-temperature solution heat exchanger H ₁ flows into the absorber A through the heating side. At this time, the state wherein the low temperature solution heat exchanger H _1, and a rare solution La of the heating-side heat exchange is performed between the concentrated solution Lm heating side (heat recovery), the rare solution La is preheated in it is sent to the medium-temperature solution heat exchanger H ₂ and the high-temperature solution heat exchanger H _3.
[0038]
By the way, in the present embodiment, as shown in FIG. 1, the absorber A and the evaporator E are housed in one predetermined container ₁ to constitute the _first unit U1, and the condenser C and the low temperature regenerator G ₁ is has a configuring the second unit U ₂ is accommodated in a predetermined single container 2. Further, the high-temperature regenerator G _3, and intermediate temperature regenerator G ₂ includes a gas-liquid separator 17 are also respectively stored in a predetermined one of the containers 3 and 4.
[0039]
Then, the first unit U in a state of mounting the second unit U ₂ on the first equipment arrangement group X _{1 1 (i.e.,} the absorber A, the evaporator E, the condenser C and the low temperature while vessel G ₁ is what is collectively) is constituted, the high temperature generator C ₃ and the intermediate temperature regenerator second device arranged group X ₂ in which the G ₂ collectively has become be configured . Wherein the first side of the equipment arrangement group X _1, although a possible second equipment arranged group X ₂ is arranged, in the present embodiment, the high temperature generator G ₃ is horizontally is disposed in the upper portion in between the high-temperature regenerator G ₃ and the first device arranged group X _1, medium temperature regenerator G ₂ are arranged in a horizontal state. Incidentally, the solution heat exchanger H ₁ to H _3, since small-sized devices, can be located anywhere, for example, the above may be disposed below the intermediate temperature regenerator G ₂ (not shown).
[0040]
By the structure described above, various devices constituting the absorption refrigerating apparatus (i.e., the absorber A, the evaporator E, the condenser C, the low temperature regenerator G _1, medium temperature regenerator G _2, the high-temperature regenerator G ₃ ) Are collectively arranged in two adjacent device arrangement groups X ₁ and X ₂ , so that a dead space can be reduced and the entire apparatus can be made compact. Moreover, since the pressure is approximately equal absorber A and the evaporator E and the low temperature regenerator G ₁ and the condenser unit by being housed in C and each container 1, the first device arranged group X ₁ It greatly contributes to downsizing. The first device arranged groups X ₁ on one end side (i.e., back side) because the device is no longer present, the evaporator E, absorber A, maintenance space of the condenser C (e.g., cleaning of the heat transfer tube, exchange Etc.) can be easily secured.
[0041]
Second Embodiment FIG. 4 shows a triple effect absorption refrigeration apparatus according to a second embodiment of the present invention.
[0042]
In this case, the high temperature generator G ₃ are, while being disposed vertically adjacent to the first end side of the equipment arrangement group X _1, medium temperature regenerator G ₂ is, with the high temperature generator G ₃ the first space surrounded by the equipment arrangement group X ₁ (i.e., front side) is arranged along the equipment arrangement group X ₁ of the first at the top of the. In this case, the solution heat exchanger H ₁ to H ₃ is omitted. In this way, vertical placement high temperature regenerator G ₃ and the first device arranged groups X ₁ and space surrounded by (i.e., dead space) it is possible to arrange the intermediate temperature regenerator G _2, the apparatus Can be further reduced in size. The arrangement position of the intermediate temperature regenerator G ₂ is, may be an appropriate position in the space surrounded by the high-temperature regenerator G ₃ a first device arranged groups X ₁ and.
[0043]
The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.
[0044]
Third Embodiment FIG. 5 shows a triple effect absorption refrigeration apparatus according to a third embodiment of the present invention.
[0045]
In this case, the high temperature generator G ₃ are, while being disposed vertically adjacent to the first end side of the equipment arrangement group X _1, medium temperature regenerator G ₂ is, an above the high temperature generator G ₃ part of the upper surface of the high-temperature regenerator G ₃ (i.e., the first portion of the top surface than the other end of the equipment arrangement group X ₁₎ the first device the other end of the arrangement group X ₁ from the position covering the (i.e., front side) is arranged along the equipment arrangement group X ₁ of the first towards the. In this embodiment, since the separation of the gas-liquid separator 17 and the container 3 of the high-temperature regenerator G _3, from where possible to reduce the height of the container 3, above the high temperature generator G ₃ is part can be taken partially overlaps the arrangement of the intermediate temperature regenerator G ₂ to the. Incidentally, the gas-liquid separator 17 is relatively small (e.g., diameter 200 mm × height 600 mm) so equipment, from where the degree of freedom of arrangement is relatively large, for example, as shown, above the high temperature generator _{G 3} can be disposed on the rear side of the intermediate temperature regenerator G ₂ be in. Further, in this embodiment, the mounting direction of the gas burner 15, as indicated by arrow P, the upper side of the high-temperature regenerator G _3. In this case, the solution heat exchanger H ₁ to H ₃ is omitted. In this way, it is possible in the dead space from the vertical placed above the high-temperature regenerator G ₃ is formed on the first side of the equipment arrangement groups X ₁ to place the intermediate temperature regenerator G _2, device Can be further reduced in size.
[0046]
The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.
[0047]
Fourth Embodiment FIG. 6 shows a triple effect absorption refrigeration apparatus according to a fourth embodiment of the present invention.
[0048]
In this case, the high temperature generator G ₃ are, are configured with a container 3 of a rectangular parallelepiped shape, and is disposed vertically adjacent to the first end side of the equipment arrangement group X _1. On the other hand, the intermediate temperature regenerator G ₂ is the high temperature generator G ₃ above is a by the high-temperature regenerator from said total covering position of the upper surface of the G ₃ first device arranged group X ₁ of the other end (i.e., are arranged along the said first device arranged groups X ₁ toward the front side). In this embodiment, since the separation of the gas-liquid separator 17 and the container 3 of the high-temperature regenerator G _3, from where possible to reduce the height of the container 3, the upper surface of the high-temperature regenerator G ₃ all the it is possible to take a part overlapping arrangement of the intermediate temperature regenerator G _2. Incidentally, the gas-liquid separator 17 is relatively small (e.g., diameter 200 mm × height 600 mm) so equipment, from where the degree of freedom of arrangement is relatively large, for example, as shown, the back of the medium-temperature regenerator _{G 2} Can be placed on the side. Further, in this embodiment, the mounting direction of the gas burner 15, as shown by the arrow Q, the back side of the high-temperature regenerator G _3. In this case, the solution heat exchanger H ₁ to H ₃ is omitted. In this way, it is possible in the dead space from the vertical placed above the high-temperature regenerator G ₃ is formed on the first side of the equipment arrangement groups X ₁ to place the intermediate temperature regenerator G _2, device Can be further reduced in size.
[0049]
The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.
[0050]
Fifth Embodiment FIGS. 7 and 8 show a triple effect absorption refrigeration apparatus according to a fifth embodiment of the present invention.
[0051]
In this case, the high temperature generator G ₃ are, while being disposed vertically adjacent to the first end side of the equipment arrangement group X _1, medium temperature regenerator G ₂ is, with the high temperature generator G ₃ the first space surrounded by the equipment arrangement group X ₁ (i.e., front side) is arranged along the equipment arrangement group X ₁ of the first at the top of the. Further, the absorber A and the evaporator E constituting the first unit U ₁ is provided with a low-pressure side and high pressure side absorber A _1, A ₂ and the low-pressure side and high pressure side evaporator E _1, E ₂ In one vessel 1, a two-stage absorption cycle in which the low pressure side is arranged on the upper side and the high pressure side is arranged on the lower side. Reference symbol RP is a refrigerant pump for circulating the refrigerant. In some cases, the low-pressure side is arranged on the lower side and the high-pressure side is arranged on the upper side. By doing so, the efficiency of the refrigeration cycle can be improved. Further, the first device arranged group X ₁ (specifically, between the intermediate temperature regenerator G ₂ and the second unit U ₂₎ between the second equipment arrangement group X _2, the external heat An exhaust heat recovery device K for recovering latent heat J (for example, waste heat of a turbine for private power generation) with an absorbing solution is disposed, and the refrigerant vapor Rk and the concentrated solution Lk generated in the waste heat recovery device K are condensed into a condenser. It has become be respectively guided to the C and the low temperature regenerator G _1. In this manner, since the the exhaust heat recovery device K is positioned near the condenser C and the low temperature regenerator G _1, it is possible to reduce the steam pressure loss and improve the exhaust heat recovery rate. In some cases, leading to refrigerant vapor Rk from the exhaust heat recovery unit K to the low temperature regenerator G _1. Furthermore, the lower intermediate temperature regenerator G _2, 3 pieces of the solution heat exchanger H ₁ to H ₃ is arranged. In this way, it becomes to be able to place the solution heat exchanger H ₁ to H ₃ by utilizing the dead space formed below the intermediate temperature regenerator G _2, it is possible to further compact apparatus.
[0052]
The other configuration and operation and effect are the same as those in the first embodiment, and thus the description is omitted.
[0053]
In each of the above embodiments, the triple effect absorption refrigeration apparatus of a type in which a part of the dilute solution from the absorber is supplied to the high-temperature regenerator has been described. And a parallel cycle).
[0054]
【The invention's effect】
According to the first aspect of the present invention, a condenser C, an evaporator E, operatively the absorber A and three of operating temperatures different regenerator G ₃ ~G ₁ with a solution piping system and a refrigerant piping system connect constitute a circulation cycle, the high temperature generator G ₃ are caused to heat boiling absorbent solution using an external heat source J to generate refrigerant vapor in the intermediate temperature regenerator G ₂ with heat of condensation of the refrigerant vapor in the absorption solution to generate refrigerant vapor allowed heating boiling, the low-temperature regenerator triple effect absorption which G ₁ in the absorption solution allowed heated to boiling configured to generate a refrigerant vapor by using heat of condensation of the refrigerant vapor in the refrigeration apparatus, the absorber a, the evaporator E, the condenser C and the one constituting the low-temperature regenerator G ₁ first device arranged groups X ₁ collectively and medium temperature regenerator G ₂ and high temperature second collectively the regenerator G ₃ With configuring the equipment arrangement group X _2, since to arrange the second device arranged groups X ₂ to the side of said first device arranged group X _1, will be able to reduce the dead space, the whole device There is an effect that the size can be reduced. The first device arranged groups X ₁ on one end side (i.e., back side) because the device is no longer present, the evaporator E, absorber A, maintenance space of the condenser C (e.g., cleaning of the heat transfer tube, exchange There is also an effect that it is easy to secure a space for performing the above.
[0055]
As in the second aspect of the present invention, in a triple effect absorption refrigeration system including the first unit, the high-temperature regenerator G ₃ adopted and the high-temperature regenerator G ₃ a once-through regenerator as, while positioned adjacent to one end of said first device arranged group X _1, the intermediate temperature regenerator G _2, in the space surrounded by said high temperature generator G ₃ and the first device arranged group X ₁ can also be arranged along the said first device arranged group X _1, when configured as such, a space surrounded by the high-temperature regenerator G ₃ and the first device arranged group X ₁ (i.e., dead space ) in it it is possible to arrange the intermediate temperature regenerator G _2. Therefore, the size of the apparatus can be further reduced.
[0056]
As in the third means of the present invention, in the second means the triple effect absorption refrigerating apparatus having a to lower the medium temperature regenerator G _2, is produced wherein each regenerator G ₁ ~G ₃ can also be arranged three solution heat exchanger H ₁ to H ₃ for recovering heat with each concentrated solution L ₁ ~L ₃ is to absorb the solution side, when configured as such, the intermediate temperature regenerator by utilizing the dead space formed below the G ₂ becomes to be able to place the solution heat exchanger H ₁ to H _3, it is possible to further compact the device.
[0057]
As in the fourth means of the present invention, the first, in triple effect absorption refrigeration system including a second or third means, said first device arranged group X _1, a predetermined container 1 the absorber a and the evaporator are arranged E to the first upper unit U ₁ and the unit U ₁ of the first formed by accommodating and the condenser to a predetermined container 2 C and the low temperature regenerator G ₁ can also be configured by the second unit U ₂ which is formed by housing a, so when configured approximately equal absorber pressure a and the evaporator E and the low temperature regenerator G ₁ and the condenser C and the respective The first device arrangement group X1 can be housed in the containers 1 and 2 to be unitized, which contributes to the downsizing of the _first device arrangement group X1.
[0058]
As in the fifth means of the present invention, in a triple effect absorption refrigeration system including the fourth means, the absorber A and the evaporator E constituting the first unit U _1, the low-pressure side and high pressure The two-stage absorption cycle in which the side absorbers A ₁ and A ₂ and the low-pressure side and high-pressure side evaporators E ₁ and E ₂ are arranged in one container 1 can be used. Efficiency can be improved.
[0059]
As in the sixth means of the present invention, the first, first, second, third, in a triple effect absorption refrigeration system including a fourth or fifth means, said first device arranged group X ₁ between the second device arranged group X _2, you can place the exhaust heat recovery device K for latent heat recovery external waste heat J with the absorption solution, when configured to do so, the exhaust heat recovery device K since that would be positioned near the condenser C and the low temperature regenerator G _1, it is possible to reduce the steam pressure loss and improve the exhaust heat recovery rate.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a device arrangement of a triple effect absorption refrigeration apparatus according to a first embodiment of the present invention.
FIG. 2 is an operation cycle diagram of the triple effect absorption refrigeration apparatus according to the first embodiment of the present invention.
FIG. 3 is an enlarged cross-sectional view of a high-temperature regenerator in the triple effect absorption refrigeration apparatus according to the first embodiment of the present invention.
FIG. 4 is a perspective view showing a device arrangement of a triple effect absorption refrigeration apparatus according to a second embodiment of the present invention.
FIG. 5 is a perspective view showing a device arrangement of a triple effect absorption refrigeration apparatus according to a third embodiment of the present invention.
FIG. 6 is a perspective view showing a device arrangement of a triple effect absorption refrigeration apparatus according to a fourth embodiment of the present invention.
FIG. 7 is a perspective view showing a device arrangement of a triple effect absorption refrigeration apparatus according to a fifth embodiment of the present invention.
FIG. 8 is an operation cycle diagram of a triple effect absorption refrigeration apparatus according to a fifth embodiment of the present invention.
[Explanation of symbols]
1,2,3,4 container, A is the absorber, _{A 1} is the low pressure side absorber, _{A 2} is a high-pressure side absorber, C is the condenser, E is the evaporator, _{E 1} is the low pressure side evaporator, E ₂ the high pressure side _evaporator, G 1 ~G ₃ is _regenerator, H 1 to H ₃ is solution heat exchanger, J external heat, K is exhaust heat recovery _system, L 1 _{~L 3,} Lk is the concentrated solution , La is a dilute solution, LP is a solution pump, Rk is a refrigerant vapor, U ₁ is a first unit, U ₂ is a second unit, X ₁ is a first device arrangement group, and X ₂ is a second device arrangement. group.

Claims (6)

Condenser (C), an evaporator (E), absorber (A) and the operating temperatures are different three regenerators (G 3 _{~G 1)} and operatively connected with the solution piping system and a refrigerant piping system A circulation cycle is constituted, and the absorption solution is heated and boiled by using the external heat source (J) in the high-temperature regenerator (G ₃ ) to generate refrigerant vapor, and the medium-temperature regenerator ( G ₂ ) heats and boils the absorbing solution to generate refrigerant vapor, and uses the heat of condensation of the refrigerant vapor to heat and heat the absorbing solution in the low-temperature regenerator (G ₁ ) to generate refrigerant vapor. A triple-effect absorption refrigeration apparatus, wherein the absorber (A), the evaporator (E), the condenser (C), and the low-temperature regenerator (G ₁ ) are grouped together as a first equipment arrangement group. While constituting (X ₁ ), the intermediate temperature regenerator (G ₂ ) and the high temperature regeneration Vessel (G ₃₎ a second device arranged group collectively together with (X ₂₎ constituting said first device arranged groups (X ₁₎ and the second device arranged group on the side of the (X ₂₎ A triple-effect absorption refrigeration system, characterized by having an arrangement. The high temperature generator (G ₃₎ adopted and the high-temperature regenerator to once-through regenerator as a (G _3), while disposed adjacent to one end of said first device arranged groups (X _1), the medium temperature regenerator (G _2), along with the high temperature generator (G ₃₎ and said first device arranged groups (X ₁₎ and the in the space surrounded by the first device arranged groups (X ₁₎ 3. The triple effect absorption refrigeration apparatus according to claim 1, wherein the apparatus is arranged. In order to recover the heat of each of the concentrated solutions (L _{1 to} L ₃ ) generated in each of the regenerators (G _{1 to} G ₃ ) to the dilute solution side below the intermediate temperature regenerator (G ₂ ). three solution heat exchanger (H 1 _{to H 3)} triple effect absorption refrigerating apparatus of claim 2, wherein in that a of. Said first device arranged group of (X _1), the absorber in a predetermined container (1) in a first unit formed by housing the (A) and the evaporator (E) (U ₁₎ said by the first unit (U ₁₎ is disposed and above the predetermined container (2) the condenser into the (C) and the low-temperature regenerator second unit formed by housing a (G ₁₎ (U ₂₎ The triple effect absorption refrigeration apparatus according to any one of claims 1, 2 and 3, wherein the apparatus is configured. The low pressure side and high pressure side absorbers (A ₁ ) and (A ₂ ) and the low pressure side and high pressure side evaporators (A ₁ ) and (A ₂ ) are combined with the absorber (A) and the evaporator (E) constituting the _first unit (U ₁ ). E _1), (E ₂₎ and the triple effect absorption refrigerating apparatus of claim 4, wherein it has a two-stage absorption cycle disposed in a container (1) in the. An exhaust heat recovery unit (K) for recovering latent heat of external waste heat (J) with an absorbing solution is provided between the first equipment arrangement group (X ₁ ) and the second equipment arrangement group (X ₂ ). The triple effect absorption refrigeration apparatus according to any one of claims 1, 2, 3, 4, and 5, wherein the apparatus is arranged.

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