JPS6161025B2 - - Google Patents
Info
- Publication number
- JPS6161025B2 JPS6161025B2 JP53149960A JP14996078A JPS6161025B2 JP S6161025 B2 JPS6161025 B2 JP S6161025B2 JP 53149960 A JP53149960 A JP 53149960A JP 14996078 A JP14996078 A JP 14996078A JP S6161025 B2 JPS6161025 B2 JP S6161025B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- condenser
- surface tension
- temperature regenerator
- absorber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003507 refrigerant Substances 0.000 claims description 33
- 239000006096 absorbing agent Substances 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 239000000498 cooling water Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000002249 anxiolytic agent Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】 この発明は多重効用吸収式冷凍機に関する。[Detailed description of the invention] This invention relates to a multiple effect absorption refrigerator.
多重効用吸収式冷凍機で最も一般に利用されて
いる二重効用吸収式冷凍機を例にとつて従来の冷
凍サイクルの概略を第１図により説明する。冷媒
である水は、低圧に保たれた蒸発器１のシエル内
にあつて、管１ａ内を流れる冷水２から熱を奪つ
て蒸発し、冷凍の目的を達する。蒸発した冷媒ガ
スは、吸収器３に向つて流れる。吸収器３のシエ
ル内には、管３ａ内を流れる冷却水４によつて一
定温度に保たれた臭化リチユウムの水溶液があ
り、蒸発した冷媒ガスはこの水溶液中に吸収さ
れ、稀溶液となる。この稀溶液は溶液循環ポンプ
５により、熱交換器６に送られる。ここを出た稀
溶液は二分され、そのうち一方は低温再生器７に
送られ、他方は高温再生器８に至る。高温再生器
８中には、都市ガス、灯油焚きのボイラあるい
は、高温蒸気などの熱源があつて、送り込まれた
稀溶液から冷媒蒸気を蒸発させ濃溶液と冷媒蒸気
とに分離する。冷媒蒸気は、低温再生器７の管７
ａ内に供給され、シエル内に送られてきた稀溶液
を加熱して濃溶液と冷媒蒸気とに分離する。この
ようにして高温再生器８および低温再生器７で溶
液から分離された冷媒蒸気は、共に凝縮器９に至
り、冷却水４により冷却されて液冷媒に戻り、管
１０を経て蒸発器１に戻り冷媒サイクルを一巡す
る。また高温再生器８で冷媒を蒸発したあとの濃
溶液は、熱交換器６にて、低温再生器７からの濃
溶液と合流して吸収器３に戻つて、再び蒸発器１
からの冷媒蒸気を吸収して稀溶液となり溶液サイ
クルを一巡する。二重効用吸収式冷凍機のサイク
ルにおいては、高温再生器において発生する高温
蒸気を低温再生器の加熱源に利用しているので熱
効率が高い点に特徴がある。また、吸収式冷凍機
は吸収器３の管３ａの伝熱性能を向上させる目的
で、オクチルアルコールなどの表面張力緩和剤が
添加されているが、この表面張力緩和剤は、臭化
リチユウム水溶液と混合して、溶液循環ポンプ５
で、一部高温再生器８や低温再生器７に送り込ま
れ、冷媒と一緒に蒸発して冷媒と伴に蒸発器１に
至る。蒸発器１に至つた表面張力緩和剤は、蒸発
器１に蓄積するため、吸収器３内の表面張力緩和
剤が減少し、吸収器３の管の伝熱性能維持が困難
になる。したがつて、冷媒系に混入した表面張力
緩和剤を吸収器３に回収する方策として、冷媒
が、凝縮器９から蒸発器１に至る配管１０の途中
に、表面張力緩和剤を冷媒から分離する分離装置
１１を配置し、分離した表面張力緩和剤を管１２
を経て吸収器３に戻す方法が採用されている。こ
の分離装置１１の分離効率は比較的高いにもかか
わらず実際には比較的短かい時間で蒸発器に表面
張力緩和剤が蓄積した。この原因を検討したとこ
ろ、表面張力緩和剤を含んだ冷媒液が、低温再生
器７から凝縮器９に流入した時、冷媒自身のもつ
ている熱で自己蒸発（フラツシング）し、激しく
冷媒中の表面張力緩和剤を混合し、表面張力緩和
剤を微細粒子にするため、分離装置１１内での分
離効率に限界を与えていることが判明した。 An outline of a conventional refrigeration cycle will be explained with reference to FIG. 1, taking as an example a dual-effect absorption refrigerator, which is the most commonly used multiple-effect absorption refrigerator. Water, which is a refrigerant, is in the shell of the evaporator 1 kept at a low pressure, and evaporates by taking heat from the cold water 2 flowing in the pipe 1a, thereby achieving the purpose of refrigeration. The evaporated refrigerant gas flows toward the absorber 3. Inside the shell of the absorber 3, there is an aqueous solution of lithium bromide that is kept at a constant temperature by the cooling water 4 flowing through the pipe 3a, and the evaporated refrigerant gas is absorbed into this aqueous solution and becomes a dilute solution. . This diluted solution is sent to a heat exchanger 6 by a solution circulation pump 5. The dilute solution exiting here is divided into two parts, one of which is sent to a low temperature regenerator 7 and the other to a high temperature regenerator 8. The high-temperature regenerator 8 includes a heat source such as a city gas, kerosene-fired boiler, or high-temperature steam, and evaporates the refrigerant vapor from the fed dilute solution to separate it into a concentrated solution and refrigerant vapor. The refrigerant vapor is passed through the pipe 7 of the low temperature regenerator 7.
The dilute solution supplied into the shell is heated and separated into a concentrated solution and refrigerant vapor. The refrigerant vapor separated from the solution in the high-temperature regenerator 8 and the low-temperature regenerator 7 together reach the condenser 9, where it is cooled by the cooling water 4 and returns to liquid refrigerant. Completes the return refrigerant cycle. Further, the concentrated solution after the refrigerant has been evaporated in the high temperature regenerator 8 joins with the concentrated solution from the low temperature regenerator 7 in the heat exchanger 6, returns to the absorber 3, and returns to the evaporator 1.
It absorbs the refrigerant vapor from the liquid, becomes a dilute solution, and goes through the solution cycle. The dual-effect absorption chiller cycle is characterized by high thermal efficiency because the high-temperature steam generated in the high-temperature regenerator is used as a heating source for the low-temperature regenerator. In addition, in absorption refrigerators, a surface tension reliever such as octyl alcohol is added for the purpose of improving the heat transfer performance of the tube 3a of the absorber 3. Mix, solution circulation pump 5
A part of the refrigerant is sent to the high-temperature regenerator 8 and the low-temperature regenerator 7, evaporates together with the refrigerant, and reaches the evaporator 1 together with the refrigerant. Since the surface tension reliever that has reached the evaporator 1 accumulates in the evaporator 1, the surface tension reliever in the absorber 3 decreases, making it difficult to maintain the heat transfer performance of the tubes of the absorber 3. Therefore, as a measure to recover the surface tension reliever mixed into the refrigerant system into the absorber 3, the surface tension reliever is separated from the refrigerant in the middle of the pipe 10 where the refrigerant runs from the condenser 9 to the evaporator 1. A separation device 11 is arranged, and the separated surface tension relaxant is transferred to a tube 12.
A method is adopted in which the water is returned to the absorber 3 through the Despite the relatively high separation efficiency of this separation device 11, the surface tension relaxant actually accumulated in the evaporator in a relatively short period of time. When we investigated the cause of this, we found that when the refrigerant liquid containing the surface tension reliever flows into the condenser 9 from the low-temperature regenerator 7, it self-evaporates (flushing) due to the heat of the refrigerant itself, and the refrigerant is violently evaporated. It has been found that the separation efficiency within the separation device 11 is limited because the surface tension reliever is mixed and the surface tension reliever is made into fine particles.
この発明は、上記の究明結果に基づき発明した
もので、再生器から凝縮器に流入する冷媒液を流
入時フラツシングしないようにしたものである。 This invention was invented based on the above research results, and is designed to prevent the refrigerant liquid flowing from the regenerator into the condenser from flushing at the time of inflow.
以下この発明の一実施例を第２図および第３図
により説明する。これらの図において従来と同一
または相当するものには同一符号を付し、それら
の説明は省略する。 An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In these figures, the same reference numerals are given to the same or equivalent parts as in the conventional art, and the explanation thereof will be omitted.
第２図はこの発明の一実施例を示すもので、低
温再生器７の加熱源として使われた冷媒液を凝縮
器９に導く配管１３の途中に冷却器１４を設け、
この冷却器１４に冷水２（一般に、蒸発器１への
入口側で約12℃）の一部を循環させ、凝縮器９に
流入しようとする冷媒液を凝縮器９の飽和温度以
下に冷却するものである。 FIG. 2 shows an embodiment of the present invention, in which a cooler 14 is provided in the middle of a pipe 13 that leads the refrigerant liquid used as a heating source for the low-temperature regenerator 7 to the condenser 9.
A part of the cold water 2 (generally about 12° C. on the inlet side to the evaporator 1) is circulated through the cooler 14 to cool the refrigerant liquid about to flow into the condenser 9 to below the saturation temperature of the condenser 9. It is something.
第２図において冷却源として冷水の代りに吸収
器３から出た冷却水（一般には約36℃）または吸
収器３に流入する以前の冷却水（一般には約32
℃）を使用することもできる。第３図は他の実施
例を示すもので、凝縮器９の冷却水管９ａの一部
（たとえば１本）１４ａを管径の太いものに変
え、配管１３を、冷媒水管１４ａ内を経由したの
ち凝縮器９に開口するようにし、凝縮器９に流入
する冷媒液を飽和温度以下に冷却するものであ
る。 In FIG. 2, instead of cold water as a cooling source, the cooling water exiting the absorber 3 (generally at about 36°C) or the cooling water before entering the absorber 3 (generally at about 32°C) is used as the cooling source.
°C) can also be used. FIG. 3 shows another embodiment, in which a part (for example, one) 14a of the cooling water pipe 9a of the condenser 9 is changed to one with a larger diameter, and the pipe 13 is passed through the refrigerant water pipe 14a. It opens into the condenser 9 and cools the refrigerant liquid flowing into the condenser 9 to below the saturation temperature.
この実施例の場合、凝縮器９の冷却水管の一部
を太い口径に変えることおよび大口径の配管内を
冷媒液の通る配管１３を経由させることだけでよ
く簡単な構造で済む。 In the case of this embodiment, a simple structure can be achieved by simply changing a part of the cooling water pipe of the condenser 9 to a larger diameter pipe and passing the refrigerant liquid through the pipe 13 through the large diameter pipe.
また冷却源として冷却水を用いた場合、冷媒液
が冷却水に放出した熱量は、凝縮器９内で放出す
べき熱量が凝縮器９の外部で冷却水に放出しただ
けのことにすぎず、冷凍サイクルの熱収支は従来
のものと何ら変りない。 Furthermore, when cooling water is used as a cooling source, the amount of heat released by the refrigerant liquid to the cooling water is simply the amount of heat that should be released within the condenser 9 and released to the cooling water outside the condenser 9. The heat balance of the refrigeration cycle is no different from the conventional one.
このように、低温再生器から凝縮器に流入する
冷媒液を凝縮器に流入する以前に凝縮器の飽和温
度以下に冷却することにより、冷媒液が凝縮器に
流入した際の自己蒸発が完全に無くなりこれによ
つて表面張力緩和剤の微細粒子化がなくなる。 In this way, by cooling the refrigerant liquid flowing into the condenser from the low-temperature regenerator to below the saturation temperature of the condenser before it flows into the condenser, self-evaporation of the refrigerant liquid when it flows into the condenser is completely prevented. This eliminates the formation of fine particles of the surface tension relaxant.
以上のように、この発明によれば、冷媒液が凝
縮器に流入する際の自己蒸発をなくし、これによ
つて表面張力緩和剤の微細粒子化を防止して分離
効率を極限近くまで向上させることができる。 As described above, according to the present invention, self-evaporation when the refrigerant liquid flows into the condenser is eliminated, thereby preventing the surface tension reliever from becoming fine particles and improving the separation efficiency to the maximum level. be able to.
従つて、表面張力緩和剤が蒸発器に蓄積するこ
とによつて起こる弊害たとえば蒸発圧力の上昇、
吸収器内の表面張力緩和剤不足による伝熱性能低
下などを解消し、長時間安定した運転を維持でき
る。 Therefore, the accumulation of surface tension relaxants in the evaporator can cause harmful effects such as an increase in evaporation pressure,
This eliminates problems such as deterioration in heat transfer performance due to a lack of surface tension reliever in the absorber, allowing stable operation to be maintained for long periods of time.
第１図は従来の多重効用吸収式冷凍機の系統
図、第２図は本発明の一実施例の系統図、第３図
は本発明の他の実施例の要部を示す説明図であ
る。
１……蒸発器、３……吸収器、６……熱交換
器、７……低温再生器、８……高温再生器、９…
…凝縮器、１１……表面張力緩和剤分離器、１３
……配管、１４……冷却器。
FIG. 1 is a system diagram of a conventional multi-effect absorption refrigerator, FIG. 2 is a system diagram of one embodiment of the present invention, and FIG. 3 is an explanatory diagram showing the main parts of another embodiment of the present invention. . 1... Evaporator, 3... Absorber, 6... Heat exchanger, 7... Low temperature regenerator, 8... High temperature regenerator, 9...
... Condenser, 11 ... Surface tension reliever separator, 13
...Piping, 14...Cooler.
Claims (1)
熱交換器およびポンプを作動的に連結したものに
おいて、再生器で加熱源として使われた冷媒を凝
縮器に導入する経路の途中に、冷媒を凝縮器の飽
和温度以下に予冷する冷却器を設けたことを特徴
とする多重効用吸収式冷凍機。1 Multiple regenerators, condensers, evaporators, absorbers,
In a system in which a heat exchanger and a pump are operatively connected, a cooler is installed in the path where the refrigerant used as a heating source in the regenerator is introduced into the condenser to pre-cool the refrigerant to below the saturation temperature of the condenser. A multi-effect absorption chiller characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14996078A JPS5577676A (en) | 1978-12-06 | 1978-12-06 | Multiple absorption refrigerating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14996078A JPS5577676A (en) | 1978-12-06 | 1978-12-06 | Multiple absorption refrigerating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5577676A JPS5577676A (en) | 1980-06-11 |
| JPS6161025B2 true JPS6161025B2 (en) | 1986-12-23 |
Family
ID=15486356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14996078A Granted JPS5577676A (en) | 1978-12-06 | 1978-12-06 | Multiple absorption refrigerating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5577676A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269044A (en) * | 1975-12-05 | 1977-06-08 | Ebara Corp | Absorptive refrigerator |
-
1978
- 1978-12-06 JP JP14996078A patent/JPS5577676A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5269044A (en) * | 1975-12-05 | 1977-06-08 | Ebara Corp | Absorptive refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5577676A (en) | 1980-06-11 |
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