JPH02140564A - Controlling method for absorption refrigerator - Google Patents
Controlling method for absorption refrigeratorInfo
- Publication number
- JPH02140564A JPH02140564A JP29290688A JP29290688A JPH02140564A JP H02140564 A JPH02140564 A JP H02140564A JP 29290688 A JP29290688 A JP 29290688A JP 29290688 A JP29290688 A JP 29290688A JP H02140564 A JPH02140564 A JP H02140564A
- Authority
- JP
- Japan
- Prior art keywords
- regenerator
- temperature
- water outlet
- outlet temperature
- set value
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 239000006096 absorbing agent Substances 0.000 claims abstract description 34
- 239000002826 coolant Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 239000000498 cooling water Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 18
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 12
- 239000003507 refrigerant Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は再生器、凝縮器、蒸発器、及び吸収器等有した
吸収冷凍機の制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method of controlling an absorption refrigerator having a regenerator, a condenser, an evaporator, an absorber, etc.
（ロ）従来の技術
例えば特開昭５８−１６０７８３号公報には、冷却水を
吸収器、及び凝縮器に通し、溶液を冷却し、溶液を吸収
器から再生器へ送る吸収冷凍機が開示されている。(b) Prior Art For example, Japanese Patent Application Laid-Open No. 160783/1983 discloses an absorption refrigerator that cools a solution by passing cooling water through an absorber and a condenser, and sends the solution from the absorber to a regenerator. ing.
（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、吸収器の冷却水入口温度が例
えば夏季等に大幅に上昇し、定格値（例えば３２℃）よ
り高くなった場合には、吸収器から再生器へ送られる溶
液の温度が高くなり、再生器の加熱量を蒸発器の冷水出
口温度により制御した場合には再生温度の上昇、又は再
生圧力の上昇により、吸収冷温水機が異常停止する虞れ
があった。(c) Problems to be Solved by the Invention In the above-mentioned conventional technology, when the temperature at the absorber's cooling water inlet increases significantly, for example in the summer, and becomes higher than the rated value (for example, 32°C), the absorber If the temperature of the solution sent to the regenerator increases, and if the amount of heating in the regenerator is controlled by the cold water outlet temperature of the evaporator, the absorption chiller/heater will stop abnormally due to an increase in the regeneration temperature or regeneration pressure. There was a risk of it happening.
本発明は吸収器の冷却水入口温度又は冷却空気入口温度
が大幅に上昇した場合にも吸収冷凍機の異常停止を回避
することを目的とする。An object of the present invention is to avoid abnormal stoppage of an absorption refrigerator even when the temperature at the inlet of cooling water or the inlet of cooling air of an absorber increases significantly.
（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、再生器（１） 、
（２）、凝縮器（３）、蒸発器（４）、及び吸収器（
５）をそれぞれ配管接続し、蒸発器（４）の冷水出口温
度に比例して再生器（１）の加熱量を増加させる吸収冷
凍機の制御方法において、吸収器（５〉の冷却水入口温
度が設定値より高いときには、冷却水入口温度の上昇に
上記した比１１３制新の比例定数を小さくし、且つ、冷
水出口温度が設定値以上になったときには、冷水出口温
度の上昇に関係なく再生器（１）の加熱量を一定にする
吸収冷凍機の制御方法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 a regenerator (1),
(2), condenser (3), evaporator (4), and absorber (
5) are respectively connected by piping, and the amount of heating of the regenerator (1) is increased in proportion to the cold water outlet temperature of the evaporator (4). is higher than the set value, the proportional constant of Ratio 113 mentioned above is reduced in response to the increase in the coolant inlet temperature, and when the chilled water outlet temperature exceeds the set value, regeneration is performed regardless of the rise in the chilled water outlet temperature. The present invention provides a method of controlling an absorption refrigerator to keep the amount of heating of the container (1) constant.
又、再生器、凝縮器、蒸発器、及び空冷式の吸収器をそ
れぞれ配管接続し、蒸発器の冷水出口温度に比例して再
生器の加熱量を増加させる吸収冷凍機の制御方法におい
て、吸収器の冷却空気入口温度が設定値より高いときに
は、冷却水入口温度の上昇に伴い上記した比例制御の比
例定数を小さくし、且つ、冷水出口温度が設定値以上に
なったときには冷水出口温度の上昇に関係なく再生器の
加熱量を一定にする吸収冷凍機の制御方法を提供するも
のである。In addition, in an absorption chiller control method in which a regenerator, a condenser, an evaporator, and an air-cooled absorber are each connected through piping, and the heating amount of the regenerator is increased in proportion to the cold water outlet temperature of the evaporator, When the cooling air inlet temperature of the device is higher than the set value, the proportional constant of the proportional control described above is decreased as the cooling water inlet temperature rises, and when the chilled water outlet temperature exceeds the set value, the chilled water outlet temperature increases. The purpose of the present invention is to provide a control method for an absorption refrigerator that makes the amount of heating by the regenerator constant regardless of the amount of heat generated by the regenerator.
さらに、再生器、凝縮器、蒸発器、及び吸収器などをそ
れぞれ配管接続し、蒸発器の冷水出口温度に比例して再
生型加熱量の制御弁（２７）の開度を増加させる吸収冷
凍機の制御方法において、吸収器の冷却水入口温度、あ
るいは冷却空気入口温度が設定値より高いときには冷却
水入口温度、あるいは冷却空気入口温度の上昇に伴い上
記した比例制御の比例定数を小さくし、さらに、冷水出
口温度が設定値以上になったときには、冷水出口温度の
上昇に関係なく制御弁（２７）の開度を一定にする吸収
冷凍機の制御方法を提供するものである。Furthermore, an absorption refrigerating machine is equipped with a regenerator, a condenser, an evaporator, an absorber, etc. each connected through piping, and the opening degree of the regenerative heating amount control valve (27) is increased in proportion to the cold water outlet temperature of the evaporator. In the control method, when the absorber cooling water inlet temperature or cooling air inlet temperature is higher than the set value, the proportional constant of the proportional control described above is decreased as the cooling water inlet temperature or cooling air inlet temperature increases, and This invention provides a method for controlling an absorption refrigerator in which the opening degree of the control valve (27) is kept constant when the chilled water outlet temperature exceeds a set value, regardless of the rise in the chilled water outlet temperature.
（ホ）作用
吸収冷凍機の運転時、吸収器の冷却水入口温度あるいは
冷却空気入口温度が設定値より上昇した場合には、上昇
に伴い再生器（１）の加熱量が小さくなり、且つ、冷水
出口温度が設定値より高い場合には、加熱量が一定に保
たれ、再生器（１）の加熱量が抑えられ、再生器（１）
の溶液温度、及び再生器（１）内圧力の大幅な上昇を回
避でき、吸収冷凍機に設けられた安全装置の動作による
吸収冷凍機の停止を回避して、運転を継続させることが
可能になる。(E) Effect When the absorption chiller is operating, if the absorber cooling water inlet temperature or cooling air inlet temperature rises above the set value, the heating amount of the regenerator (1) decreases as the temperature rises, and When the cold water outlet temperature is higher than the set value, the heating amount is kept constant, the heating amount of the regenerator (1) is suppressed, and the regenerator (1)
It is possible to avoid a significant increase in the solution temperature and the pressure inside the regenerator (1), and it is possible to continue operation without stopping the absorption chiller due to the operation of the safety device installed in the absorption chiller. Become.
又、吸収冷凍機の運転時、吸収器の冷却水入口温度ある
いは冷却空気入口温度が設定値より高い場合には、温度
上昇に伴い再生型加熱量の制御弁（２７〉の開度が小さ
くなり、且つ、冷水出口温度が設定値より高い場合には
、制御弁（２７）の開度が一定に保たれ、再生器（１）
の加熱量が抑えられ、再生器（１）の溶液温度、及び再
生器（１）内圧力の大幅な上昇を回避でき、吸収冷凍機
に設けられた安全装置の動作による吸収冷凍機の停止を
回避して運転を継続させることが可能になる。Also, when the absorption chiller is operating, if the absorber cooling water inlet temperature or cooling air inlet temperature is higher than the set value, the opening degree of the regenerative heating amount control valve (27) will become smaller as the temperature rises. , and when the cold water outlet temperature is higher than the set value, the opening degree of the control valve (27) is kept constant, and the regenerator (1)
It is possible to suppress the amount of heating of the regenerator (1), avoid a large increase in the solution temperature in the regenerator (1), and the pressure inside the regenerator (1), and prevent the absorption refrigerating machine from being stopped due to the operation of the safety device installed in the absorption refrigerating machine. It is possible to avoid this and continue driving.
（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図に示したものは二重効用吸収冷凍機であり、冷媒
に水（Ｕ＊Ｏ）を、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 a dual-effect absorption refrigerator, in which water (U*O) is used as the refrigerant and lithium bromide (absorbent) is used as the absorbent (absorbing liquid).
LiBr) aqueous solution was used.
第１図において、（１）はガスバーナ（ＩＢ）を備えた
高温再生器、（２）は低温再生器、（３）は凝縮器、（
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１２〉は吸収
液配管、（１５）は吸収液ポンプ、（１６）ないしく１
８）は冷＼
媒配管、（１９）は冷媒ポンプ、（２１）はガスバーナ
（ＩＢ）に接続されたガス配管、（２２）は冷水配管、
〈２３）は冷却水配管であり、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、（２４）は冷水配管
（２２）の出口側に設けられた冷水出口温度検出器（以
下第１温度検出器という）、（２５）は冷却水配管（２
３）の吸収器入口側に設けられた冷却水入口側温度検出
器（以下第２温度検出器という）である。さらに、（２
７）はガス配管（２１）の途中に設けられた燃料制御弁
（加熱量制御弁）である。（３０）は制御装置であり、
この制御装置（３０）は第１．第２温度検出器（２４）
、 （２５）から温度信号を入力し、温度信号に基づ
いて燃料制御弁（２７）へ開度信号を出力する。ここで
、制御装置（３０）には、蒸発器（４）の冷水出口温度
に対して燃料制御弁（２７）の開度が比例するように設
定されており、第２図に示したように、吸収器（５）の
冷却水入口温度が設定値（例えば３２℃）を越えたとき
には冷水出口温度に対する燃料制御弁（２７）の開度、
即ち、冷水出口温度と燃料制御弁（２７）の開度との比
例定数が冷却水入口温度の上昇に伴い小さくなり、冷水
出口温度が８°Ｃ以上になったときには制御弁（２７）
の開度が冷水出口温度に関係なく一定になるように設定
されている。In Figure 1, (1) is a high temperature regenerator equipped with a gas burner (IB), (2) is a low temperature regenerator, (3) is a condenser, (
4) is the evaporator, (5) is the absorber, (6) is the low-temperature heat exchanger, (7) is the high-temperature heat exchanger, (8) or 12> is the absorption liquid piping, and (15) is the absorption liquid pump. , (16) or 1
8) is the refrigerant pipe, (19) is the refrigerant pump, (21) is the gas pipe connected to the gas burner (IB), (22) is the cold water pipe,
Reference numeral 23 indicates cooling water pipes, and each pipe is connected as shown in FIG. Further, (24) is a cold water outlet temperature detector (hereinafter referred to as the first temperature detector) provided on the outlet side of the cold water pipe (22), and (25) is a cold water outlet temperature detector (hereinafter referred to as the first temperature detector) provided on the outlet side of the cold water pipe (22).
3) is a cooling water inlet side temperature detector (hereinafter referred to as a second temperature detector) provided on the absorber inlet side. Furthermore, (2
7) is a fuel control valve (heat amount control valve) provided in the middle of the gas pipe (21). (30) is a control device,
This control device (30) is the first control device (30). Second temperature detector (24)
, (25), and outputs an opening signal to the fuel control valve (27) based on the temperature signal. Here, the control device (30) is set so that the opening degree of the fuel control valve (27) is proportional to the cold water outlet temperature of the evaporator (4), as shown in FIG. , when the coolant inlet temperature of the absorber (5) exceeds a set value (for example, 32°C), the opening degree of the fuel control valve (27) relative to the chilled water outlet temperature;
That is, the proportionality constant between the chilled water outlet temperature and the opening degree of the fuel control valve (27) becomes smaller as the coolant inlet temperature increases, and when the chilled water outlet temperature becomes 8°C or higher, the control valve (27)
The opening degree is set to be constant regardless of the chilled water outlet temperature.
上記二重効用吸収冷凍機の運転時、高温再生器（１）で
蒸発した冷媒は低温再生器（２）を経て凝縮器（３）に
入り、冷却水配管（２３）内を流れる水と熱交換して凝
縮液化した後冷媒配管（１７）を介して蒸発器（４）へ
流れる。そして、冷媒液が冷水配管（２２）内の水と熱
交換して蒸発し、気化熱によって冷水配管（２２）内の
水が冷却される。また、蒸発器（４）で蒸発した冷媒は
吸収器（５）で吸収液に吸収される。そして、冷媒を吸
収して濃度の薄くなった吸収液が吸収液ポンプ（１５）
の運転により低温熱交換器（６）、高温熱交換器（７）
を経て高温再生器（１）へ送られる。高温再生器〈１）
に入った吸収液はバーナ（ＩＢ）によって加熱され、冷
媒が蒸発し、中濃度の吸収液が高温熱交換器（７）を経
て低温再生器（２）に入る。そして、吸収液は高温再生
器（１）から冷媒配管（１６）を流れて来た冷媒蒸気に
より加熱され、さらに冷媒が蒸発分離され濃度が高くな
る。During operation of the above-mentioned double-effect absorption chiller, the refrigerant evaporated in the high-temperature regenerator (1) passes through the low-temperature regenerator (2) and enters the condenser (3), and the water flowing in the cooling water pipe (23) and heat After being exchanged and condensed and liquefied, it flows to the evaporator (4) via the refrigerant pipe (17). Then, the refrigerant liquid exchanges heat with the water in the cold water pipe (22) and evaporates, and the water in the cold water pipe (22) is cooled by the heat of vaporization. Further, the refrigerant evaporated in the evaporator (4) is absorbed into an absorption liquid in the absorber (5). Then, the absorption liquid whose concentration has become diluted by absorbing the refrigerant is pumped to the absorption liquid pump (15).
The operation of the low temperature heat exchanger (6) and high temperature heat exchanger (7)
is sent to the high temperature regenerator (1). High temperature regenerator <1)
The absorbed liquid is heated by the burner (IB), the refrigerant is evaporated, and the medium concentration absorption liquid passes through the high temperature heat exchanger (7) and enters the low temperature regenerator (2). Then, the absorption liquid is heated by the refrigerant vapor flowing through the refrigerant pipe (16) from the high-temperature regenerator (1), and the refrigerant is further evaporated and separated, increasing its concentration.
高濃度になった吸収液（以下濃液という）は低温熱交換
器（６）を経て温度低下して吸収器（５）へ流れ散布さ
れる。The highly concentrated absorption liquid (hereinafter referred to as concentrated liquid) passes through a low-temperature heat exchanger (6), lowers its temperature, flows to an absorber (5), and is dispersed.
上記のように吸収冷凍機の運転が行われているとき、制
御装置（３０）が第１温度検出器（２４）から冷水出口
温度の信号を入力し、この信号に基づいて燃料制御弁（
２７）へ信号を出力する。そして、高温再生器（１）の
加熱量が冷水出口温度に基づいて制御される。When the absorption chiller is operating as described above, the control device (30) inputs the chilled water outlet temperature signal from the first temperature detector (24), and based on this signal, the fuel control valve (
27). The heating amount of the high temperature regenerator (1) is then controlled based on the cold water outlet temperature.
ここで第２温度検出器（２５）が検出する冷却水入口温
度が設定値の例えば３２°Ｃ以下の場合には、第１温度
検出器（２４）が検出する冷水出口温度に基づいて燃料
制御弁（２７）の開度が第２図のライン（３１）になる
ように制御装置（３０）が燃料制御弁（２７）へ信号を
出力する。又、外気温度の上昇等により、冷却水入口温
度が３２°Ｃを越え、例えば３２，３°Ｃになった場合
には、冷水出口温度に対する燃料制御弁（２７）の開度
が第２図のライン（３２）になるように制御装置（３０
）が燃料制御弁（２７）へ信号を出力する。そして、冷
却水入口温度が３２’Ｃ以下のときと比べ冷水出口温度
に対する燃料制御弁（２７）の開度は小さくなり、高温
再生器（１）での加熱量が減少する。そして、冷水出口
温度が８°Ｃ以上になった場合も高温再生器（１）の開
度は８０％に制限される。さらに、冷却水入口温度が上
昇すると、それに伴い、冷水出口温度に対する燃料制御
弁（２７）の開度が第２図のライン（３３） 、 （３
４） 、 （３５）になるように制御装置（３０）が燃
料制御弁（２７）へ信号を出力する。そして、冷水出口
温度に対する高温再生器（１）での加熱量は冷却水入口
温度の上昇に伴い減少する。又、冷却水入口温度が３４
°Ｃより高くなった場合には、制御装置（３０）が動作
して吸収冷凍機の運転が停止する。Here, if the cooling water inlet temperature detected by the second temperature detector (25) is below the set value, for example 32°C, fuel control is performed based on the cold water outlet temperature detected by the first temperature detector (24). The control device (30) outputs a signal to the fuel control valve (27) so that the opening degree of the valve (27) becomes line (31) in FIG. In addition, if the cooling water inlet temperature exceeds 32°C, for example 32.3°C, due to a rise in outside air temperature, the opening degree of the fuel control valve (27) relative to the cooling water outlet temperature will change as shown in Figure 2. line (32) of the control device (30
) outputs a signal to the fuel control valve (27). Then, compared to when the cooling water inlet temperature is 32'C or less, the opening degree of the fuel control valve (27) with respect to the cold water outlet temperature becomes smaller, and the amount of heating in the high temperature regenerator (1) decreases. Even when the cold water outlet temperature reaches 8°C or higher, the opening degree of the high temperature regenerator (1) is limited to 80%. Furthermore, as the cooling water inlet temperature rises, the opening degree of the fuel control valve (27) relative to the cooling water outlet temperature increases as shown in lines (33) and (3) in FIG.
4) The control device (30) outputs a signal to the fuel control valve (27) so that (35). The amount of heating in the high temperature regenerator (1) relative to the chilled water outlet temperature decreases as the coolant inlet temperature rises. Also, the cooling water inlet temperature is 34
If the temperature rises above °C, the control device (30) operates to stop the operation of the absorption refrigerator.
又、冷却水入口温度が例えば３４°Ｃから低下したとき
には、上記のように上昇したときとは逆に冷水出口温度
に対する燃料制御弁（２７）の開度が大きくなる。そし
て、冷水出口温度に対する高温再生器（１）での加熱量
は冷却水入口温度の上昇に伴い増加する。Further, when the coolant inlet temperature decreases from, for example, 34° C., the opening degree of the fuel control valve (27) increases with respect to the coolant outlet temperature, contrary to when the coolant inlet temperature increases as described above. The amount of heating in the high temperature regenerator (1) relative to the chilled water outlet temperature increases as the coolant inlet temperature rises.
上記実施例によれば、冷却水入口温度が設定値より上昇
し、吸収器（５）から高温再生器（１）へ流れる溶液の
温度が上昇した場合には、冷却水入口温度に応じて制御
装置（３０）が動作し、冷水出口温度に対する高温再生
器（１）の加熱量、即ち燃料制御弁（２７）の開度を小
さくし、カスケード制御を行い、高温再生器（１）での
加熱量が減少し、且つ、冷水出口温度が８℃以上になっ
た場合には燃料制御弁（２７）の開度が一定に保たれ、
加熱量が一定に保たれるため、冷却水温度が上昇したと
きに、高温再生器（１）の溶液温度、及び高温再生器（
１）内の圧力が大幅に上昇することを防止でき、吸収冷
凍機に設けられた安全装置（図示せず）の動作による吸
収冷凍機の停止を回避して運転を継続きせることができ
る。According to the above embodiment, when the cooling water inlet temperature rises above the set value and the temperature of the solution flowing from the absorber (5) to the high temperature regenerator (1) rises, the control is performed according to the cooling water inlet temperature. The device (30) operates to reduce the heating amount of the high temperature regenerator (1) relative to the cold water outlet temperature, that is, the opening degree of the fuel control valve (27), and performs cascade control to reduce the heating in the high temperature regenerator (1). When the amount decreases and the cold water outlet temperature becomes 8°C or higher, the opening degree of the fuel control valve (27) is kept constant,
Since the amount of heating is kept constant, when the cooling water temperature rises, the solution temperature in the high temperature regenerator (1) and the high temperature regenerator (
1) It is possible to prevent the internal pressure from increasing significantly, and it is possible to continue operation of the absorption refrigerating machine without stopping the absorption refrigerating machine due to the operation of a safety device (not shown) provided in the absorption refrigerating machine.
又、吸収器（５）が空冷式のものであり、吸収器（５）
に冷却空気を流して吸収器（５）を冷却するものにおい
ても、例えば外気温の上昇により吸収器（５）の冷却空
気入口温度が設定値（定格値）を越えたときに、上記の
冷却水を流す場合と同様に、冷却空気入口温度が高くな
るのに伴い、高温再生器（１）の加熱量即ち、燃料制御
弁（２７）の開度を小さくし、且つ、冷水出口温度が８
℃以上になった場合には燃料制御弁（２７）の開度を一
定に保つことにより冷却空気入口温度の上昇時に高温再
生器（１）の溶液温度、及び高温再生器（１）内の圧力
が大幅に上昇することを回避でき、吸収冷凍機の異常停
止を防止して運転を安定化させることができる。In addition, the absorber (5) is an air-cooled type, and the absorber (5)
Even in a device that cools the absorber (5) by flowing cooling air into the absorber (5), for example, when the cooling air inlet temperature of the absorber (5) exceeds the set value (rated value) due to a rise in outside temperature, the above cooling Similarly to the case of flowing water, as the cooling air inlet temperature increases, the amount of heating of the high temperature regenerator (1), that is, the opening degree of the fuel control valve (27) is reduced, and the temperature of the cold water outlet increases to 8.
℃ or higher, by keeping the opening degree of the fuel control valve (27) constant, the solution temperature in the high-temperature regenerator (1) and the pressure inside the high-temperature regenerator (1) will be reduced when the cooling air inlet temperature rises. It is possible to avoid a significant increase in the absorption chiller, prevent abnormal stoppage of the absorption chiller, and stabilize operation.
（ト）発明の効果
本発明は以上のように構成きれた吸収冷凍機の制御方法
であり、蒸発器の冷水出口温度に比例して再生器の加熱
量を増加させ、吸収器の冷却水入口温度が設定値を越え
たときには、冷却水入口温度の上昇に伴い上記比例制御
の比例定数を小さくし、且つ、冷水出口温度が設定値以
上になったときには加熱量を冷水出口温度に関係なく一
定に保つため、冷却水入口温度が設定値を越え、高くな
った場合に再生器の溶液温度、及び再生器内の圧力が大
幅に上昇することを回避でき、この結果、吸収冷凍機の
異常停止を防止して運転を継続することができる。(G) Effects of the Invention The present invention is a control method for an absorption refrigerator configured as described above, which increases the heating amount of the regenerator in proportion to the temperature of the cold water outlet of the evaporator, and When the temperature exceeds the set value, the proportional constant of the proportional control described above is decreased as the coolant inlet temperature rises, and when the chilled water outlet temperature exceeds the set value, the heating amount is kept constant regardless of the chilled water outlet temperature. As a result, if the cooling water inlet temperature exceeds the set value and becomes high, the solution temperature in the regenerator and the pressure inside the regenerator can be prevented from increasing significantly, and as a result, abnormal stoppage of the absorption chiller can be avoided. It is possible to prevent this and continue driving.
又、蒸発器の冷水出口温度に比例して再生器の加熱量を
増加させ、さらに、吸収器の冷却空気入口温度が設定値
を越えたときには冷却空気入口温度の上昇に伴い上記比
例制御の比例定数を小さくし且つ、冷水出口温度が設定
値以上になったときには加熱量を冷水出口温度に関係な
く一定に保つことにより、冷却空気入口温度が設定値を
越えた場合にも、再生器の溶液温度及び再生器内圧力が
大幅に上昇することを回避でき、この結果、吸収冷凍機
の異常停止を防止して運転を継続することができる。In addition, the heating amount of the regenerator is increased in proportion to the cold water outlet temperature of the evaporator, and when the cooled air inlet temperature of the absorber exceeds the set value, the proportional control described above is increased as the cooled air inlet temperature increases. By making the constant small and keeping the heating amount constant regardless of the chilled water outlet temperature when the chilled water outlet temperature exceeds the set value, the regenerator solution can be maintained even if the cooled air inlet temperature exceeds the set value. It is possible to avoid a significant increase in temperature and pressure within the regenerator, and as a result, it is possible to prevent abnormal stoppage of the absorption refrigerator and continue operation.
さらに、再生型加熱量の制御弁の開度を蒸発器の冷水出
口温度に比例して増加させ、さらに吸収器の冷却水入口
温度あるいは冷却空気入口温度が設定値より高い場合に
は、冷却水入口温度、あるいは冷却空気入口温度の上昇
に伴い、上記比例制御の比例定数を小さくし、且つ冷水
出口温度が設定値以上になっときには加熱量を冷水出口
温度に関係なく一定に保つことにより、冷却水入口温度
あるいは冷却空気入口温度が設定値を越えた場合には再
生器の溶液温度、及び再生器内圧力が大幅に上昇するこ
とを回避でき、この結果、吸収冷凍機の異常停止を防止
して運転を継続することができる。Furthermore, the opening degree of the control valve for the regenerative heating amount is increased in proportion to the evaporator cold water outlet temperature, and if the absorber cooling water inlet temperature or cooling air inlet temperature is higher than the set value, the cooling water As the inlet temperature or cooling air inlet temperature rises, the proportional constant of the proportional control described above is reduced, and when the chilled water outlet temperature exceeds the set value, the amount of heating is kept constant regardless of the chilled water outlet temperature. If the water inlet temperature or cooling air inlet temperature exceeds the set value, it is possible to prevent the solution temperature in the regenerator and the pressure inside the regenerator from increasing significantly, and as a result, abnormal stoppage of the absorption chiller can be prevented. operation can be continued.
第１図及び第２図は本発明の一実施例を示したものであ
り、第１図は吸収冷凍機の冷凍サイクル図、第２図は冷
却水入口温度が変化したときの冷水出口温度に対する燃
料制御弁開度の説明図。
（１）・・・高温再生器、 （３）・・・凝縮器、 （
４）・・・蒸発器、 （５）・・・吸収器、 （２７）
・・・加熱量制御弁（燃料制御弁）。Fig. 1 and Fig. 2 show an embodiment of the present invention, Fig. 1 is a refrigeration cycle diagram of an absorption refrigerator, and Fig. 2 is a diagram of the chilled water outlet temperature when the coolant inlet temperature changes. An explanatory diagram of the fuel control valve opening degree. (1)...High temperature regenerator, (3)...Condenser, (
4)...Evaporator, (5)...Absorber, (27)
... Heating amount control valve (fuel control valve).
Claims (1)
れ配管接続し、蒸発器の冷水出口温度に比例して再生器
の加熱量を増加させる吸収冷凍機の制御方法において、
吸収器の冷却水入口温度が設定値より高いときには、冷
却水入口温度の上昇に伴い上記した比例制御の比例定数
を小さくし、且つ、冷水出口温度が設定値以上になった
ときには冷水出口温度に関係なく再生器の加熱量を一定
にすることを特徴とする吸収冷凍機の制御方法。 ２、再生器、凝縮器、蒸発器、及び空冷式の吸収器をそ
れぞれ配管接続し、蒸発器の冷水出口温度に比例して再
生器の加熱量を増加させる吸収冷凍機の制御方法におい
て、吸収器の冷却空気入口温度が設定値より高いときに
は、冷却空気入口温度の上昇に伴い上記した比例制御の
比例定数を小さく制御し、且つ、冷水出口温度が設定値
以上になったときには冷水出口温度の上昇に関係なく再
生器の加熱量を一定に制御することを特徴とする吸収冷
凍機の制御方法。 ３、再生器、凝縮器、蒸発器、及び吸収器などをそれぞ
れ配管接続し、蒸発器の冷水出口温度に比例して再生器
加熱量の制御弁の開度を増加させる吸収冷凍機の制御方
法において、吸収器の冷却水入口温度、あるいは冷却空
気入口温度が設定値より高いときには冷却水入口温度、
あるいは冷却空気入口温度の上昇に伴い上記した比例制
御の比例定数を小さく制御し、且つ、冷水出口温度が設
定値以上になったときには、冷水出口温度の上昇に関係
なく上記制御弁の開度を一定に制御することを特徴とす
る吸収冷凍機の制御方法。[Scope of Claims] 1. Control of an absorption refrigerator in which a regenerator, a condenser, an evaporator, an absorber, etc. are connected through piping, and the heating amount of the regenerator is increased in proportion to the cold water outlet temperature of the evaporator. In the method,
When the coolant inlet temperature of the absorber is higher than the set value, the proportional constant of the proportional control described above is decreased as the coolant inlet temperature rises, and when the chilled water outlet temperature exceeds the set value, the chilled water outlet temperature is increased. A method for controlling an absorption chiller, characterized by keeping the heating amount of a regenerator constant regardless of the amount of heat generated by the regenerator. 2. In an absorption chiller control method in which a regenerator, a condenser, an evaporator, and an air-cooled absorber are each connected through piping, and the heating amount of the regenerator is increased in proportion to the cold water outlet temperature of the evaporator. When the cooling air inlet temperature of the device is higher than the set value, the proportional constant of the proportional control described above is decreased as the cooling air inlet temperature rises, and when the chilled water outlet temperature exceeds the set value, the chilled water outlet temperature is decreased. A method for controlling an absorption refrigerator characterized by controlling the heating amount of a regenerator to be constant regardless of the rise. 3. A method for controlling an absorption refrigerator in which the regenerator, condenser, evaporator, absorber, etc. are connected through piping, and the opening degree of the control valve for the regenerator heating amount is increased in proportion to the cold water outlet temperature of the evaporator. When the absorber cooling water inlet temperature or cooling air inlet temperature is higher than the set value, the cooling water inlet temperature,
Alternatively, the proportional constant of the proportional control described above is controlled to a small value as the cooling air inlet temperature rises, and when the chilled water outlet temperature exceeds the set value, the opening degree of the control valve is reduced regardless of the rise in the chilled water outlet temperature. A method of controlling an absorption refrigerator characterized by constant control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29290688A JPH02140564A (en) | 1988-11-18 | 1988-11-18 | Controlling method for absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29290688A JPH02140564A (en) | 1988-11-18 | 1988-11-18 | Controlling method for absorption refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02140564A true JPH02140564A (en) | 1990-05-30 |
Family
ID=17787929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29290688A Pending JPH02140564A (en) | 1988-11-18 | 1988-11-18 | Controlling method for absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02140564A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118693A (en) * | 1991-10-30 | 1993-05-14 | Yamatake Honeywell Co Ltd | Controller of absorptive water cooling/heating device |
| WO1995034789A1 (en) * | 1994-06-10 | 1995-12-21 | Tokyo Gas Co., Ltd. | Absorption water chiller/heater and method of controlling same |
| JP2008122484A (en) * | 2006-11-09 | 2008-05-29 | Omi Velvet Kk | Brush roller and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176965A (en) * | 1987-01-19 | 1988-07-21 | 東京瓦斯株式会社 | Double effect air-cooling type water chiller and heater |
| JPS63251764A (en) * | 1987-04-03 | 1988-10-19 | 三洋電機株式会社 | Method of controlling absorption refrigerator |
-
1988
- 1988-11-18 JP JP29290688A patent/JPH02140564A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63176965A (en) * | 1987-01-19 | 1988-07-21 | 東京瓦斯株式会社 | Double effect air-cooling type water chiller and heater |
| JPS63251764A (en) * | 1987-04-03 | 1988-10-19 | 三洋電機株式会社 | Method of controlling absorption refrigerator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118693A (en) * | 1991-10-30 | 1993-05-14 | Yamatake Honeywell Co Ltd | Controller of absorptive water cooling/heating device |
| WO1995034789A1 (en) * | 1994-06-10 | 1995-12-21 | Tokyo Gas Co., Ltd. | Absorption water chiller/heater and method of controlling same |
| JP2008122484A (en) * | 2006-11-09 | 2008-05-29 | Omi Velvet Kk | Brush roller and manufacturing method thereof |
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