JPH04151469A - Control device for absorption type freezer - Google Patents
Control device for absorption type freezerInfo
- Publication number
- JPH04151469A JPH04151469A JP27730290A JP27730290A JPH04151469A JP H04151469 A JPH04151469 A JP H04151469A JP 27730290 A JP27730290 A JP 27730290A JP 27730290 A JP27730290 A JP 27730290A JP H04151469 A JPH04151469 A JP H04151469A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- generator
- absorption liquid
- recovery device
- heat
- 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.)
- Granted
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 238000011084 recovery Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 230000008014 freezing Effects 0.000 abstract 2
- 238000007710 freezing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 17
- 239000003507 refrigerant Substances 0.000 description 14
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
くイ）産業上の利用分野
本発明は吸収冷凍機の制御装置に関し、特に蒸気を加熱
源とした発生器を備えた吸収冷凍機の制御装置に関する
。DETAILED DESCRIPTION OF THE INVENTION B) Industrial Application Field The present invention relates to a control device for an absorption refrigerating machine, and more particularly to a control device for an absorption refrigerating machine equipped with a generator using steam as a heating source.
く口）従来の技術
例えば特開昭６３−２２３４６２号公報には、蒸気を加
熱源とする発生器を備え、蒸発器の冷水出口温度により
蒸気管の蒸気制御弁を制御して発生器に供給きれる蒸気
量を調節する温度調節装置を備えた吸収冷凍機が開示さ
れている。Conventional technology For example, Japanese Patent Application Laid-Open No. 63-223462 discloses a system that is equipped with a generator that uses steam as a heating source, and that controls the steam control valve of the steam pipe according to the temperature of the cold water outlet of the evaporator to supply the steam to the generator. An absorption refrigerator is disclosed that includes a temperature control device that adjusts the amount of steam that can be produced.
（ハ）発明が解決しようとする課題
上記従来の技術において、冷水出口温度、即ち冷水負荷
により発生器に供給きれる蒸気量を調節しているため、
発生器から例えばガスエンジン発電機などの熱源側に戻
る蒸気ドレンの温度が下がり過ぎることがあり、熱源側
に負担をかける。そして、吸収冷凍機と熱源側の機器と
からなるシステム全体のバランスが崩れるおそれがあっ
た。特に、上記ガスエンジン発電機の冷却系などのよう
に、能力が限られている場合に、戻りの蒸気ドレンの温
度が低がり過ぎると、発生器に供給きれる蒸気圧力の低
下、又は蒸気量の不足が発生し、吸収冷凍機の再生温度
が下がり、成績係数が低下して冷凍能力も低下するとい
う問題が発生していた。(c) Problems to be Solved by the Invention In the above conventional technology, the amount of steam that can be supplied to the generator is adjusted by the chilled water outlet temperature, that is, the chilled water load.
The temperature of the steam drain returning from the generator to the heat source, such as a gas engine generator, may drop too much, putting a strain on the heat source. Then, there was a risk that the balance of the entire system consisting of the absorption refrigerator and the equipment on the heat source side would be lost. In particular, when the capacity is limited, such as in the cooling system of the gas engine generator mentioned above, if the temperature of the return steam drain becomes too low, the steam pressure that can be supplied to the generator will decrease or the amount of steam will decrease. There was a problem that a shortage occurred, and the regeneration temperature of the absorption chiller decreased, resulting in a decrease in the coefficient of performance and a decrease in the refrigerating capacity.
本発明は発生器から熱源側へ戻る蒸気ドレンの温度を一
定に保つことを目的とする。The purpose of the present invention is to maintain a constant temperature of the steam drain returning from the generator to the heat source side.
（ニ）課題を解決するための手段
本発明は上記課題を解決するために、吸収器（５）と、
蒸気を加熱源とする高温発生器（１）と、吸収器（５）
から高温発生器（１）に至る稀吸収液配管（８）に設け
られた吸収液ポンプ（１５）と、稀吸収液配管（８）に
設けられた熱回収器（９Ａ）と、高温発生器（１）から
熱回収器（９Ａ）を経て熱源に至る蒸気ドレン配管（２
０）とを備え、蒸発器（４〉の冷水出口温度に基づいて
高温発生器（１）に流れる蒸気の量を制御する加熱量制
御器（３１〉を有した吸収冷凍機の制御装置において、
熱回収器（９Ａ）の蒸気ドレン出口温度に基づいて吸収
液ポンプ（１５）の回転数を制御し、熱回収器（９Ａ）
の蒸気ドレン出口温度を一定温度にする機構を備えた吸
収冷凍機の制御装置を提供するものである。(d) Means for solving the problems In order to solve the above problems, the present invention provides an absorber (5),
High temperature generator (1) using steam as a heating source and absorber (5)
An absorption liquid pump (15) installed in the diluted absorption liquid piping (8) leading from to the high temperature generator (1), a heat recovery device (9A) installed in the diluted absorption liquid piping (8), and the high temperature generator. Steam drain piping (2) from (1) to the heat source via the heat recovery device (9A)
0), and a heating amount controller (31) that controls the amount of steam flowing to the high temperature generator (1) based on the cold water outlet temperature of the evaporator (4),
The rotation speed of the absorption liquid pump (15) is controlled based on the steam drain outlet temperature of the heat recovery device (9A).
The present invention provides a control device for an absorption refrigerator that is equipped with a mechanism for keeping the steam drain outlet temperature at a constant temperature.
又、熱回収器（９Ａ）の熱源流体出口温度に基づいて吸
収液ポンプ（１５）の回転数を制御する機構を備えた吸
収冷凍機の制御装置を提供するものである。Further, the present invention provides a control device for an absorption refrigerator including a mechanism for controlling the rotation speed of the absorption liquid pump (15) based on the temperature of the heat source fluid outlet of the heat recovery device (9A).
さらに、吸収器（５〉から高温発生器（１〉へ流れる稀
吸収液の量を熱ｆＪ、流体の発生器出口側の温度によっ
て制御する機構を備えた吸収冷凍機の制御装置を提供す
るものである。Furthermore, the present invention provides a control device for an absorption refrigerator having a mechanism for controlling the amount of dilute absorption liquid flowing from the absorber (5) to the high temperature generator (1) according to the heat fJ and the temperature at the outlet side of the fluid generator. It is.
（木）作用
吸収冷凍機の運転時、熱回収器（９Ａ）、或いは高温発
生器（１）の出口側の蒸気ドレンなどの熱源流体の温度
を検出し、熱源流体の温度によって吸収液ポンプ（１５
）の回転数が変化し、熱源流体の温度が低下した場合に
は高温発生器（１）へ送られる稀吸収液の量が減少し、
高温発生器（１）での熱交換量、及び熱回収器（９Ａ）
での熱交換量が減少する。(Thu) Function When operating the absorption refrigerator, the temperature of the heat source fluid such as the steam drain on the outlet side of the heat recovery device (9A) or the high temperature generator (1) is detected, and the absorption liquid pump ( 15
) changes and the temperature of the heat source fluid decreases, the amount of dilute absorption liquid sent to the high temperature generator (1) decreases,
Heat exchange amount in high temperature generator (1) and heat recovery device (9A)
The amount of heat exchanged at
又、熱源流体の温度が上昇したときには高温発生器（１
）へ送られる稀吸収液の量が増加し、上記熱交換量が増
える。このため、熱回収器（９Ａ）出口側の熱ｆｉ、流
体の温度を一定に保ち、高温発生器＜１）ノ温度を安定
きせることができ、この結果吸収冷凍機の運転を安定さ
せることが可能になる。Also, when the temperature of the heat source fluid rises, the high temperature generator (1
) increases the amount of dilute absorption liquid sent to ), increasing the amount of heat exchange. Therefore, the heat fi and fluid temperature on the exit side of the heat recovery device (9A) can be kept constant, and the temperature of the high temperature generator <1) can be stabilized, and as a result, the operation of the absorption chiller can be stabilized. It becomes possible.
（へ〉実施例
以下、本発明の一実施例を図面に基づいて詳細に説明す
る。(F) Example Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図に示したものは吸収冷温水機であり、冷媒に水（
Ｈ，Ｏ）、吸収剤（吸収液）に臭化リチウム（ＬｉＢｒ
）水溶液を使用したものである。The one shown in Figure 1 is an absorption chiller/heater, and the refrigerant is water (
H, O), lithium bromide (LiBr
) using an aqueous solution.
第１図において（１）は高温発生器、（２）は低温発生
器、（３）は凝縮器、（３Ａ）は冷媒液溜め、（４）は
蒸発器、（５）は吸収器、（６）は低温熱交換器、（７
）は高温熱交換器、（８）ないしく１０）は稀吸収液管
、（１１） 、 （１２）は中間吸収液管、（１３）
、 （１４）は吸収液管、（９Ａ）は蒸気ドレン熱回収
器、（１３Ａ）は濃液ポンプ、（１５）は吸収液ポンプ
、（１６）及び（１７）は冷媒管、（１８）は冷媒液流
下管、（１９）は冷媒液循環管、（１９Ｐ）は冷媒ポン
プ、（２０）は蒸気ドレン配管、（２０Ａ）は高温発生
器熱交換器、（２０Ｂ＞はスチームトラップ、（２０Ｃ
）は熱回収器熱交換器、（２１）は加熱量制御弁、（２
２）は冷水配管、（２３）は蒸発器熱交換器であり、そ
れぞれは第１図に示したように配管接続されている。又
、（Ａ）は上胴、（Ｂ）は下胴である。きらに、（２５
）は冷却水配管であり、この冷却水配管（２５）の途中
には吸収器熱交換器（２６）及び凝縮器熱交換器（２７
）が設けられている。ここで、蒸気ドレン配管（２０）
は高温発生器（１）から蒸気ドレン熱回収器（９Ａ）を
経てガスエンジン発電機などの熱源（図示せず）に至る
。In Figure 1, (1) is a high temperature generator, (2) is a low temperature generator, (3) is a condenser, (3A) is a refrigerant reservoir, (4) is an evaporator, (5) is an absorber, ( 6) is a low temperature heat exchanger, (7
) is a high temperature heat exchanger, (8) or 10) is a dilute absorption liquid pipe, (11) and (12) are intermediate absorption liquid pipes, (13)
, (14) is the absorption liquid pipe, (9A) is the steam drain heat recovery device, (13A) is the concentrated liquid pump, (15) is the absorption liquid pump, (16) and (17) are the refrigerant pipes, and (18) is the Refrigerant liquid flow down pipe, (19) is refrigerant liquid circulation pipe, (19P) is refrigerant pump, (20) is steam drain pipe, (20A) is high temperature generator heat exchanger, (20B> is steam trap, (20C)
) is a heat recovery device heat exchanger, (21) is a heating amount control valve, (2
2) is a cold water pipe, and (23) is an evaporator heat exchanger, each of which is connected to the pipes as shown in FIG. Also, (A) is the upper body, and (B) is the lower body. Kirani, (25
) is a cooling water pipe, and an absorber heat exchanger (26) and a condenser heat exchanger (27) are installed in the middle of this cooling water pipe (25).
) is provided. Here, steam drain piping (20)
flows from the high temperature generator (1) through the steam drain heat recovery device (9A) to a heat source (not shown) such as a gas engine generator.
（３０）は蒸発器（４）の出口側の冷水配管（２２）に
設けられた冷水出口温度検出器、（３１）は加熱量制御
器である。この加熱量制御器（３１）は冷水出口温度検
出器（３０）から入力した温度データに基づいて加熱量
制御弁（２１〉の開度を制御する。又、（３２）は蒸気
ドレン熱回収器（９Ａ）の出口側の蒸気配管（２０）に
設けられた蒸気ドレン出口温度の検出器（以下ドレン温
度検出器という）、〈３３）は吸収液ポンプ（１５）の
回転数制御器である。この回転数制御器（３３）は制御
装置（３４）とインバータ装置（３５）とから構成きれ
、制御装置く３４）は蒸気ドレン出口温度に応じて周波
数信号をインバータ装置（３５）へ出力し、インバータ
装置（３５〉は入力した周波数信号の周波数の電力を吸
収液ポンプ（１５）に供給する。(30) is a cold water outlet temperature detector provided in the cold water pipe (22) on the outlet side of the evaporator (4), and (31) is a heating amount controller. This heating amount controller (31) controls the opening degree of the heating amount control valve (21>) based on the temperature data input from the chilled water outlet temperature detector (30). A steam drain outlet temperature detector (hereinafter referred to as a drain temperature detector) (33) provided in the steam pipe (20) on the outlet side of (9A) is a rotation speed controller of the absorption liquid pump (15). This rotation speed controller (33) is composed of a control device (34) and an inverter device (35), and the control device (34) outputs a frequency signal to the inverter device (35) according to the steam drain outlet temperature. The inverter device (35> supplies power at the frequency of the input frequency signal to the absorption liquid pump (15).
上記のように構成された吸収冷凍機の運転時、例えばガ
スエンジン発電機から蒸気配管（２０）を流れて来た蒸
気（熱源流体）が高温発生器熱交換器（２０Ａ＞に流入
する。そして、従来の吸収冷凍機と同様に発生器（２０
）にて稀吸収液が加熱されて冷媒蒸気が発生する。発生
した冷媒蒸気は低温発生器（２）で凝縮して凝縮器（３
）へ流れる。又、低温発生器（２）から凝縮器（３）へ
流れた冷媒蒸気は凝縮器熱交換器（２７）で冷却きれて
凝縮する。そして、冷媒液が凝縮器（３）から蒸発器（
４）へ流下し、冷媒ポンプ（１９Ｐ）の運転によって蒸
発器熱交換器（２３〉に散布されて温度が低下した冷水
が蒸発器（４）から負荷に供給きれる。又、中間吸収液
が高温発生器（１）から低温発生器（２）へ流れ、さら
に冷媒蒸気が分離して濃度が高くなった濃吸収液が吸収
器（５）へ流下して散布きれ、蒸発器（５）で気化した
冷奴蒸気が濃吸収液に吸収される。冷媒蒸気を吸収して
２１１度が低下した稀吸収液は、吸収液ポンプ（１５）
の運転によって高温発生器（１）へ流れる。During operation of the absorption refrigerator configured as described above, steam (heat source fluid) flowing through the steam pipe (20) from, for example, a gas engine generator flows into the high temperature generator heat exchanger (20A>. , the generator (20
), the dilute absorption liquid is heated and refrigerant vapor is generated. The generated refrigerant vapor is condensed in the low temperature generator (2) and sent to the condenser (3).
). Further, the refrigerant vapor flowing from the low temperature generator (2) to the condenser (3) is completely cooled and condensed in the condenser heat exchanger (27). Then, the refrigerant liquid flows from the condenser (3) to the evaporator (
The cold water flows down to 4) and is sprayed to the evaporator heat exchanger (23) by the operation of the refrigerant pump (19P), so that the cold water whose temperature has decreased is completely supplied to the load from the evaporator (4). The refrigerant vapor flows from the generator (1) to the low-temperature generator (2), and the concentrated absorption liquid, which has a higher concentration due to separation of refrigerant vapor, flows down to the absorber (5) and is completely sprayed, where it is vaporized in the evaporator (5). The cooled steam is absorbed by the concentrated absorption liquid.The diluted absorption liquid whose temperature has decreased by 211 degrees by absorbing the refrigerant vapor is transferred to the absorption liquid pump (15).
flows to the high temperature generator (1).
上記のように吸収冷凍機が運転されているとき、冷水出
口温度検出器（３０）の検出温度に基づいて加熱量制御
器（３１）が動作し、冷水出口温度と設定温度とを比較
して加熱量制御弁（２１）へ開度信号を出力する。そし
て、加熱量制御弁（２１）の開度が冷水出口温度に応し
て変化し、高温発生器（１）へ流れる蒸気の量が変化し
て高温発生器（１）の加熱量が変化して冷水出口温度は
ほぼ一定に保たれる。When the absorption chiller is operated as described above, the heating amount controller (31) operates based on the temperature detected by the chilled water outlet temperature detector (30), and compares the chilled water outlet temperature with the set temperature. An opening signal is output to the heating amount control valve (21). Then, the opening degree of the heating amount control valve (21) changes depending on the cold water outlet temperature, the amount of steam flowing to the high temperature generator (1) changes, and the heating amount of the high temperature generator (1) changes. The cold water outlet temperature is kept almost constant.
又、ドレン温度検出器（３２）は蒸気ドレン熱交換器（
９Ａ〉の出口側の蒸気ドレンの温度を検出し、温度信号
を回転数制御器（３３）へ出力する。そして、制御装置
（３４）は温度信号に応じて周波数信号をインバータ装
置（３５）へ出力する。ここで、第２図は蒸気ドレンの
温度と吸収液ポンプ（１５）に供給きれる電力の周波数
との関係の１例を示したものである。第２図に示したよ
うに蒸気ドレンの温度が７０°Ｃから９０°Ｃの間で変
化したとき、上記周波数は２０Ｈｚから６０Ｈｚの間で
変化する。ここで、蒸気ドレンの温度が低下した場合に
は制御装置（３４）が出力する周波数信号は減少し、イ
ンバータ装置（３５）から吸収液ポンプ（１５）に供給
きれる電力の周波数が減少する。このため、吸収液ポン
プ（１５）の回転数が低下し、吸収器（５）から高温発
生器（１）へ流れる稀吸収液の量が減少する。そして、
蒸気ドレン熱回収器（９Ａ）での蒸気ドレンと稀吸収液
との熱交換量が減り、蒸気ドレンの蒸気ドレン熱回収器
（９Ａ〉での温度低下が少なくなる。又、高温発生器（
１）に流入する稀吸収液の量が減少するので、高温発生
器（１）での顕熱が減少し、高温発生器（１）の温度が
上昇してきらに蒸気ドレンの温度が上昇する。In addition, the drain temperature detector (32) is connected to the steam drain heat exchanger (
9A> is detected, and a temperature signal is output to the rotation speed controller (33). The control device (34) then outputs a frequency signal to the inverter device (35) according to the temperature signal. Here, FIG. 2 shows an example of the relationship between the temperature of the steam drain and the frequency of the electric power that can be supplied to the absorption liquid pump (15). As shown in FIG. 2, when the temperature of the steam drain changes between 70°C and 90°C, the frequency changes between 20Hz and 60Hz. Here, when the temperature of the steam drain decreases, the frequency signal output by the control device (34) decreases, and the frequency of the electric power that can be completely supplied from the inverter device (35) to the absorption liquid pump (15) decreases. Therefore, the rotation speed of the absorption liquid pump (15) decreases, and the amount of dilute absorption liquid flowing from the absorber (5) to the high temperature generator (1) decreases. and,
The amount of heat exchange between the steam drain and the dilute absorption liquid in the steam drain heat recovery device (9A) is reduced, and the temperature drop in the steam drain heat recovery device (9A) is reduced. Also, the high temperature generator (
1), the sensible heat in the high temperature generator (1) decreases, the temperature of the high temperature generator (1) increases, and the temperature of the steam drain increases.
又、蒸気ドレンの温度が上昇したときには、上記とは逆
に制御装置（３４）が動作し、制御装置（３４〉が出力
する周波数信号は増加する。このため、インバータ装置
（３５）から吸収液ポンプ〈１５）に供給きれる電力の
周波数が増加し、吸収液ポンプ（１５）の回転数が上昇
し、吸収器（５）から高温発生器（１）へ流れる稀吸収
液の量が増加する。そして、ドレン熱回収器〈９Ａ）で
の熱交換量が増え、蒸気ドレンの蒸気ドレン熱回収器（
９Ａ）での温度低下が大きくなる。又、高温発生器（１
）に流入する稀吸収液の量が増加するので、高温発生器
（１）での顕熱か増加し、高温発生器（１）の温度か低
下して、さらに蒸気ドレンの温度が低下する。Moreover, when the temperature of the steam drain increases, the control device (34) operates in the opposite manner to the above, and the frequency signal output by the control device (34>) increases.For this reason, the absorption liquid is removed from the inverter device (35). The frequency of the electric power that can be supplied to the pump (15) increases, the rotational speed of the absorption liquid pump (15) increases, and the amount of dilute absorption liquid flowing from the absorber (5) to the high temperature generator (1) increases. Then, the amount of heat exchanged in the drain heat recovery device (9A) increases, and the steam drain heat recovery device (9A) of the steam drain increases.
9A), the temperature drop becomes large. In addition, a high temperature generator (1
), the sensible heat in the high temperature generator (1) increases, the temperature of the high temperature generator (1) decreases, and the temperature of the steam drain further decreases.
以後、同様に、蒸気ドレン出口温度の変化に応じて吸収
液ポンプ（１５）に供給される電力の周波数が変化し、
吸収液ポンプ（１５）の回転数が変化して吸収器（５）
からドレン熱回収器（９Ａ）を経て高温発生器（１）へ
流れる稀吸収液の量が変化するので、ドレン熱回収器（
９Ａ）での熱交換量、及び高温発生器（１）の顕熱が変
化し、蒸気ドレン出口温度の過度の低下、及び上昇を防
止することができる。この結果、蒸気ドレン出口温度を
ほぼ一定に保つことができ、高温発生器（１）に供給諮
れる蒸気の圧力低下、或いは蒸気量の不足を回避でき、
吸収冷凍機を安定して運転させることができる。又、高
温発生器（１）へ供給される蒸気の温度が低下して蒸気
ドレン出口温度が低下したとき、高温発生器（１〉へ流
れる稀吸収液の量を減らすことにより、高温発生器（１
〉の顕熱が減少し、吸収冷凍機の成績係数を良くするこ
とができると共に、冷凍能力を十分発揮させることがで
きる。Thereafter, similarly, the frequency of the power supplied to the absorption liquid pump (15) changes according to the change in the steam drain outlet temperature,
The rotation speed of the absorption liquid pump (15) changes and the absorber (5)
Since the amount of dilute absorption liquid flowing from the drain heat recovery device (9A) to the high temperature generator (1) changes, the drain heat recovery device (9A)
9A) and the sensible heat of the high-temperature generator (1) are changed, making it possible to prevent the steam drain outlet temperature from excessively decreasing or increasing. As a result, the steam drain outlet temperature can be kept almost constant, and a drop in the pressure of the steam supplied to the high temperature generator (1) or a shortage in the amount of steam can be avoided.
The absorption refrigerator can be operated stably. In addition, when the temperature of the steam supplied to the high temperature generator (1) decreases and the steam drain outlet temperature decreases, by reducing the amount of dilute absorption liquid flowing to the high temperature generator (1), the high temperature generator (1) 1
The sensible heat of > is reduced, the coefficient of performance of the absorption refrigerator can be improved, and the refrigerating capacity can be fully demonstrated.
尚、上記実施例で、ドレン熱回収器（９Ａ）を備えた吸
収冷凍機について説明したが、ドレン熱回収器を備えな
い吸収冷凍機においても、高温発生器（１）の出口側の
蒸気ドレンの温度を検出し、この温度によって吸収液ポ
ンプ（１５）に供給きれる電力の周波数を制御して吸収
器（５）から高温発生器（１）へ流れる稀吸収液の量を
調節することによって、高温発生器（１）の顕熱が変化
し、高温発生器（１）から流出し熱源側へ戻る蒸気ドレ
ンの温度をほぼ一定に保つことができる。In the above embodiment, an absorption refrigerating machine equipped with a drain heat recovery device (9A) was explained, but an absorption refrigerator without a drain heat recovery device also has a steam drain on the outlet side of the high temperature generator (1). By detecting the temperature of and controlling the frequency of the electric power that can be supplied to the absorption liquid pump (15) based on this temperature, the amount of dilute absorption liquid flowing from the absorber (5) to the high temperature generator (1) is adjusted. Sensible heat of the high temperature generator (1) changes, and the temperature of the steam drain flowing out from the high temperature generator (1) and returning to the heat source side can be kept almost constant.
又、吸収液管（９〉に制御弁を設け、この制御弁の開度
を蒸気ドレンの温度によって制御して吸収器（５）から
高温発生器（１）へ流れる稀吸収液の量を制御すること
によって、上記実施例と同様の作用効果を得ることがで
きる。In addition, a control valve is provided in the absorption liquid pipe (9>), and the opening degree of this control valve is controlled by the temperature of the steam drain to control the amount of dilute absorption liquid flowing from the absorber (5) to the high temperature generator (1). By doing so, the same effects as in the above embodiment can be obtained.
（ト）発明の効果
本発明は以上のように構成された吸収冷凍機の制御装置
であり、冷水出口温度に基づいて高温発生器に流れる蒸
気の量を制御する加熱量制御器を備えた吸収冷凍機の制
御装置において、熱回収器の蒸気ドレン出口温度に基づ
いて吸収液ポンプの回転数を制御して出口温度を一定温
度にする機構を備えているので、例えば冷水負荷が変化
して高温発生器の加熱量が変化して熱回収器の蒸気ドレ
ン出口温度が変化した場合には吸収液ポンプの回転数を
制御して吸収器から高温発生器へ流れる稀吸収液の量を
調節して熱回収器での熱交換量及び高温発生器の顕熱を
変化させ、熱源へ戻るドレンの温度を一定に保ち、熱源
側から高温発生器へ流入する蒸気の温度の低下を回避し
て、吸収冷凍機の成績係数の低下を回避することができ
る。(G) Effects of the Invention The present invention is a control device for an absorption chiller configured as described above, which is an absorption chiller equipped with a heating amount controller that controls the amount of steam flowing to the high temperature generator based on the chilled water outlet temperature. Refrigerator control equipment is equipped with a mechanism that controls the rotational speed of the absorbent pump based on the steam drain outlet temperature of the heat recovery device to maintain the outlet temperature at a constant temperature. When the heating amount of the generator changes and the temperature of the steam drain outlet of the heat recovery device changes, the rotation speed of the absorption liquid pump is controlled to adjust the amount of dilute absorption liquid flowing from the absorber to the high temperature generator. By changing the heat exchange amount in the heat recovery device and the sensible heat of the high-temperature generator, the temperature of the drain returning to the heat source is kept constant, avoiding a drop in the temperature of the steam flowing into the high-temperature generator from the heat source side, and absorbing A decrease in the coefficient of performance of the refrigerator can be avoided.
又、熱回収器の熱源流体出口温度に基づいて吸収液ポン
プの回転数を制御する機構を備えているので、例えば負
荷が変化して熱源流体出口温度が変化したときには、吸
収液ポンプの回転数が変化し、発生器に流れる稀吸収液
の量が変化して熱回収器の熱交換量が変化して熱源流体
出口温度を一定に保つことができ、高温発生器の運転を
安定きせることができる。In addition, since it is equipped with a mechanism to control the rotation speed of the absorption liquid pump based on the heat source fluid outlet temperature of the heat recovery device, for example, when the heat source fluid outlet temperature changes due to a change in load, the rotation speed of the absorption liquid pump will be changed. changes, the amount of dilute absorption liquid flowing into the generator changes, and the heat exchange amount of the heat recovery device changes, making it possible to keep the heat source fluid outlet temperature constant and stabilize the operation of the high-temperature generator. can.
さらに、吸収器から発生器に流れる稀吸収液の量を熱源
流体の発生器出口側の温度によって制御するので負荷が
変化して発生器の加熱量が変化した場合、或は発生器へ
流れる熱源流体の温度が変化した場合に、発生器へ流れ
る稀吸収液の量を調節し、発生器出口側の熱源流体の温
度を一定に保つことができ、発生器に供給される熱源流
体の温度の低下を防止でき、この結果、発生器の温度を
安定許せ、吸収冷凍機の成績係数を良くすることができ
る。Furthermore, since the amount of dilute absorption liquid flowing from the absorber to the generator is controlled by the temperature of the heat source fluid at the generator outlet side, if the load changes and the amount of heating in the generator changes, or the heat source flowing to the generator When the fluid temperature changes, the amount of dilute absorption liquid flowing to the generator can be adjusted to keep the temperature of the heat source fluid at the generator outlet constant, and the temperature of the heat source fluid supplied to the generator can be kept constant. As a result, the temperature of the generator can be kept stable and the coefficient of performance of the absorption refrigerator can be improved.
第１図は本発明の一実施例を示す吸収冷凍機の回路構成
図、第２図は蒸気ドレン（熱源流体）の温度と吸収液ポ
ンプに供給きれる電力の周波数との関係図である。
（１）・・・高温発生器、 （５）・・・吸収器、 （
８）、 ＜９）。
（１０）・・・稀吸収液管、 （１５）・・・吸収液ポ
ンプ、 （２０）・・・蒸気配管、 （３１）・・・加
熱量制御器、 〈３３）・・・回転数制御装置。FIG. 1 is a circuit configuration diagram of an absorption refrigerator showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the temperature of a steam drain (heat source fluid) and the frequency of electric power that can be supplied to an absorption liquid pump. (1)...High temperature generator, (5)...Absorber, (
8), <9). (10)...Dilute absorption liquid pipe, (15)...Absorption liquid pump, (20)...Steam piping, (31)...Heating amount controller, <33)...Rotation speed control Device.
Claims (1)
器から高温発生器に至る稀吸収液配管に設けられた吸収
液ポンプと、稀吸収液配管に設けられた熱回収器と、上
記高温発生器から熱回収器を経て熱源に至る蒸気ドレン
配管とを備え、蒸発器の冷水出口温度に基づいて高温発
生器に流れる蒸気の量を制御する加熱量制御器を備えた
吸収冷凍機の制御装置において、熱回収器の蒸気ドレン
出口温度に基づいて吸収液ポンプの回転数を制御し、熱
回収器の蒸気ドレン出口温度を一定温度にする機構を備
えたことを特徴とする吸収冷凍機の制御装置。 ２、吸収器と、発生器と、吸収器から発生器に至り途中
に吸収液ポンプを備えた稀吸収液配管と、この稀吸収液
配管の途中に設けられて稀吸収液と高温発生器からの熱
源流体とを熱交換する熱回収器とを備えた吸収冷凍機に
おいて、熱回収器の熱源流体出口温度に基づいて吸収液
ポンプの回転数を制御する機構を備えたことを特徴とす
る吸収冷凍機の制御装置。 ３、吸収器と、熱源流体が供給される発生器とを備えた
吸収冷凍機において、吸収器から発生器へ流れる稀吸収
液の量を熱源流体の発生器出口側の温度によって制御す
る機構を備えたことを特徴とする吸収冷凍機の制御装置
。[Scope of Claims] 1. An absorber, a high-temperature generator using steam as a heating source, an absorbent pump installed in the diluted absorption liquid piping from the absorber to the high-temperature generator, and an absorbent pump installed in the diluted absorption liquid piping. and a steam drain pipe that runs from the high-temperature generator to the heat source via the heat recovery device, and controls the amount of steam flowing to the high-temperature generator based on the cold water outlet temperature of the evaporator. In the control device for an absorption refrigerator equipped with a heat recovery device, the rotation speed of the absorption liquid pump is controlled based on the temperature at the steam drain outlet of the heat recovery device, and the temperature at the steam drain outlet of the heat recovery device is maintained at a constant temperature. A control device for an absorption refrigerator characterized by the following. 2. An absorber, a generator, a diluted absorption liquid piping with an absorption liquid pump on the way from the absorber to the generator, and a pipe installed in the middle of this diluted absorption liquid piping to connect the diluted absorption liquid and the high temperature generator. An absorption refrigerating machine equipped with a heat recovery device for exchanging heat with a heat source fluid of Refrigerator control device. 3. In an absorption refrigerator equipped with an absorber and a generator to which heat source fluid is supplied, a mechanism is provided to control the amount of dilute absorption liquid flowing from the absorber to the generator by the temperature of the heat source fluid at the generator outlet side. A control device for an absorption chiller, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27730290A JP2858921B2 (en) | 1990-10-15 | 1990-10-15 | Control device for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27730290A JP2858921B2 (en) | 1990-10-15 | 1990-10-15 | Control device for absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04151469A true JPH04151469A (en) | 1992-05-25 |
| JP2858921B2 JP2858921B2 (en) | 1999-02-17 |
Family
ID=17581646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27730290A Expired - Fee Related JP2858921B2 (en) | 1990-10-15 | 1990-10-15 | Control device for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2858921B2 (en) |
-
1990
- 1990-10-15 JP JP27730290A patent/JP2858921B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2858921B2 (en) | 1999-02-17 |
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