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JP5088783B2 - Energy-saving control operation method and apparatus for vapor absorption refrigerator - Google Patents

Energy-saving control operation method and apparatus for vapor absorption refrigerator Download PDF

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JP5088783B2
JP5088783B2 JP2007264076A JP2007264076A JP5088783B2 JP 5088783 B2 JP5088783 B2 JP 5088783B2 JP 2007264076 A JP2007264076 A JP 2007264076A JP 2007264076 A JP2007264076 A JP 2007264076A JP 5088783 B2 JP5088783 B2 JP 5088783B2
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cooling water
temperature
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cooling
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JP2009092318A5 (en
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健一 斉藤
真 内田
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Kawasaki Thermal Engineering Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

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  • Sorption Type Refrigeration Machines (AREA)

Description

本発明は、冷房用の冷水を供給する熱源システムにおける、加熱源を水蒸気とする蒸気吸収式冷凍機の省エネルギー制御運転方法及び装置に関するものである。   The present invention relates to an energy saving control operation method and apparatus for a vapor absorption refrigeration machine using steam as a heating source in a heat source system for supplying cooling water for cooling.

蒸気吸収式冷凍機及び周辺機器で構成され、冷房用の冷水を供給する熱源システムにおいて、蒸気吸収式冷凍機で発生する熱を回収した冷却水は、冷却塔にて冷却水の一部を蒸発させることで冷却水温度を下げ、再び冷凍機に流入する。一般的に使用されている冷却塔は、冷却水の蒸発潜熱を利用した冷却であるため、冷却可能温度はその周辺の湿球温度に影響される。
冷却塔で冷却する冷却水の目標温度は、通常、蒸気吸収式冷凍機入口での要求仕様である、冷却水入口温度３２℃又は３１℃であり、この要求仕様温度は、日本国内では１年を通した最大湿球温度時（例えば２８℃）でも冷却塔で冷却可能な冷却水温度としている。いい換えると、日本国内においては１年のほとんどの期間で、湿球温度がこの最大湿球温度以下であるため、冷却水温度を３２℃又は３１℃より低い温度に低下させることが可能なのである。 In a heat source system that consists of a vapor absorption refrigerator and peripheral equipment that supplies cooling water for cooling, the cooling water that recovered the heat generated by the vapor absorption refrigerator is partially evaporated in the cooling tower. As a result, the cooling water temperature is lowered and flows into the refrigerator again. Since the cooling tower generally used is cooling using the latent heat of vaporization of cooling water, the coolable temperature is affected by the temperature of the wet bulb around the cooling tower.
The target temperature of the cooling water to be cooled by the cooling tower is usually the cooling water inlet temperature 32 ° C. or 31 ° C. which is a required specification at the inlet of the vapor absorption refrigerator, and this required specification temperature is one year in Japan. The cooling water temperature can be cooled by the cooling tower even at the maximum wet-bulb temperature (for example, 28 ° C.). In other words, in most of the year in Japan, the wet bulb temperature is below this maximum wet bulb temperature, so the cooling water temperature can be lowered to 32 ° C or lower than 31 ° C. .

一方で吸収式冷凍機は、冷却水温度を低下させることで、機内を循環する吸収液温度が下がり、吸収能力が増す。このため、冷媒の蒸発が活発になり、冷房に使用する冷水を冷やす能力が向上するので、吸収式冷凍機の性能、効率を改善することができる。
これらのことから、冷却塔周辺の湿球温度に応じて、冷却水温度を制御して、冷却水温度の低下が可能な場合には冷却水温度を低下させて（吸収式冷凍機の安全運転に支障を来たさない範囲で低下させて）、吸収式冷凍機の運転効率を改善させることができる。また、蒸気吸収式冷凍機の運転動力である水蒸気消費量も削減可能となるため、冷房用の冷水を供給する熱源システムにおいて、従来の制御システムより大幅な省エネルギー運転を図ることができる。 On the other hand, by reducing the cooling water temperature, the absorption refrigerator lowers the temperature of the absorption liquid circulating in the machine and increases the absorption capacity. For this reason, since the evaporation of the refrigerant becomes active and the ability to cool the cold water used for cooling is improved, the performance and efficiency of the absorption chiller can be improved.
Therefore, the cooling water temperature is controlled according to the wet bulb temperature around the cooling tower, and when the cooling water temperature can be lowered, the cooling water temperature is lowered (safe operation of the absorption chiller). The operating efficiency of the absorption chiller can be improved. In addition, since it is possible to reduce the amount of water vapor that is the driving power of the vapor absorption refrigeration machine, the heat source system that supplies the cooling water for cooling can achieve a significant energy saving operation compared to the conventional control system.

従来から、多機能湿度調節器として、目標とする湿度値と乾球・湿球温度から算出した相対湿度を比較しながら湿度制御を行うことにより、湿度の急激な変化を制御するようにしたものが知られている（例えば、特許文献１参照）。また、冷却塔の運転方法とこの冷却塔として、乾球温度を計測する温度計と、その相対湿度を測定する乾式の湿度計を設けて、冷却塔の送風機の回転方向を正逆制御するようにしたものが知られている（例えば、特許文献２参照）。また、恒温恒湿装置として、乾球温度、湿球温度、相対湿度、露点温度の４つの指標の少なくとも２つの入力により、残りの少なくとも１つを演算する演算装置を備えたものが知られている（例えば、特許文献３参照）。
また、恒温恒湿装置として、目標乾球温度、目標湿球温度及び目標相対湿度の雰囲気指標のうち少なくとも２つの値の入力に基づき冷却装置の冷却能力を制御するようにしたものが知られている（例えば、特許文献４参照）。また、湿潤温度制御優先式温湿度統合コントローラとして、乾球温度センサーのみならず湿潤温度センサーを備える空気調和システム用コントローラとする構成のものが知られている（例えば、特許文献５参照）。また、、屋内温度調節器として、室内に湿度センサーと温度センサーとを設け、湿潤温度値を乾球温度と共に用いて、温度値と湿度値の両方の関数である単一の誤差信号を生成し、これによって、温度調節システムの異常サイクルなしで室内温度と室内湿度の両方を制御するようにし、湿潤温度を直接測定するセンサーを使用する代わりに、室内の相対湿度と乾球温度から湿潤温度を合成することができるようにしたものが知られている（例えば、特許文献６参照）。また、冷房負荷制御運転に連動させて冷却水温度を制御する吸収式冷凍機制御方法及び吸収式冷凍機設備として、冷水入口温度を制御する加熱量制御信号を利用して冷却水流量を制御するようにしたものが知られている（例えば、特許文献７参照）。さらに、二重効用吸収冷凍機として、この二重効用吸収冷凍機において、起動時の高圧再生器における蒸気過大流入あるいは溶液キャリオーバー現象を防止するようにしたものが知られている（例えば、特許文献８参照）。
特開２００２−３６４８８３号公報（第１頁、図２） 特開２００２−２１３８９８号公報（第１頁、図１） 特開２００１−３３０７９号公報（第１頁、図３） 特開２００１−３３０７８号公報（第１頁、図１） 特表２００４−５２４４９５号公報（第１頁、図１） 特表平８−５１０３４８号公報（第１頁、図１） 特開２００６−５７９９１号公報（第１頁、図１） 特開平７−４３０３６号公報（第１頁、図１） Conventionally, as a multifunctional humidity controller, a rapid change in humidity is controlled by performing humidity control while comparing the target humidity value with the relative humidity calculated from the dry bulb / wet bulb temperature. Is known (see, for example, Patent Document 1). In addition, a cooling tower operating method and a thermometer for measuring the dry bulb temperature and a dry hygrometer for measuring the relative humidity are provided as the cooling tower, so that the rotation direction of the cooling tower fan is controlled forward and backward. What was made into is known (for example, refer patent document 2). In addition, as a constant temperature and humidity device, a device equipped with a calculation device that calculates at least one of the remaining by inputting at least two indicators of dry bulb temperature, wet bulb temperature, relative humidity, and dew point temperature is known. (For example, see Patent Document 3).
A constant temperature and humidity device is known that controls the cooling capacity of the cooling device based on the input of at least two values of the target dry bulb temperature, the target wet bulb temperature, and the target relative humidity. (For example, see Patent Document 4). As a wet temperature control priority type temperature / humidity integrated controller, an air conditioning system controller having a wet temperature sensor as well as a dry bulb temperature sensor is known (see, for example, Patent Document 5). Also, as an indoor temperature controller, a humidity sensor and a temperature sensor are provided in the room, and the wet temperature value is used together with the dry bulb temperature to generate a single error signal that is a function of both the temperature value and the humidity value. This allows both room temperature and room humidity to be controlled without an abnormal cycle of the temperature control system, and instead of using a sensor that directly measures the wet temperature, the wet temperature is calculated from the room relative humidity and the dry bulb temperature. Those that can be synthesized are known (for example, see Patent Document 6). In addition, as an absorption chiller control method and an absorption chiller facility for controlling the cooling water temperature in conjunction with the cooling load control operation, the cooling water flow rate is controlled using a heating amount control signal for controlling the chilled water inlet temperature. What was made is known (for example, refer patent document 7). Furthermore, as a double-effect absorption refrigerator, there is known a double-effect absorption refrigerator that prevents an excessive inflow of steam or a solution carryover phenomenon in a high-pressure regenerator at startup (for example, a patent) Reference 8).
JP 2002-364883 A (first page, FIG. 2) JP 2002-213898 A (first page, FIG. 1) Japanese Patent Laying-Open No. 2001-33079 (first page, FIG. 3) JP 2001-33078 A (first page, FIG. 1) Japanese translation of PCT publication No. 2004-524495 (first page, FIG. 1) JP-T-8-510348 (1st page, FIG. 1) Japanese Patent Laying-Open No. 2006-57991 (first page, FIG. 1) JP 7-43036 A (first page, FIG. 1)

解決しようとする問題点は、蒸気吸収式冷凍機のまわりの温度、湿度に応じて、省エネルギーに最適の冷却水温度に設定できない点である。   The problem to be solved is that the optimum cooling water temperature for energy saving cannot be set according to the temperature and humidity around the vapor absorption refrigerator.

本発明は、蒸気吸収式冷凍機の運転効率改善のために、乾球温度及び相対湿度を逐次入力することにより、湿球温度を逐次計測して、その時の湿球温度に応じた冷却水温度になるように、予め設定したデータテーブルにより冷却塔ファンモータの回転数単独、又は冷却塔ファンモータの回転数と冷却水温度調整弁を同時に制御して、所定の冷却水温度になるように自動的に制御することを最も主要な特徴としている。   In order to improve the operational efficiency of the vapor absorption refrigerator, the present invention sequentially measures the wet bulb temperature by sequentially inputting the dry bulb temperature and the relative humidity, and the cooling water temperature according to the wet bulb temperature at that time. So that the cooling tower fan motor rotation speed alone or the cooling tower fan motor rotation speed and the cooling water temperature adjustment valve are simultaneously controlled based on a preset data table to automatically achieve a predetermined cooling water temperature. Control is the most important feature.

ただし、蒸気吸収式冷凍機では、低冷却水温度で運転を行う場合には、低冷却水温度の影響で吸収式冷凍機内部を循環する吸収液温度が低下し、同時に胴内伝熱管部で凝縮する蒸気ドレン温度が低下し、凝縮圧力も低下するので、外部から供給される蒸気の量を制御する制御弁の開度調整の制御量よりも、外部から供給される蒸気の圧力と胴内伝熱管部で蒸気ドレンが凝縮する凝縮圧力の圧力差の影響を受ける。
すなわち、蒸気制御弁の開度調整により蒸気流量を制御しようとしても制御弁前の蒸気供給側圧力と制御弁後の胴内伝熱管部凝縮圧力の圧力差が増大して、制御弁で制御が必要な蒸気量以上の蒸気が過大に吸収式冷凍機に流入することになる。蒸気吸収式冷凍機は、適正な蒸気量を越えて蒸気が流入すると、異常加熱、冷えすぎ、吸収液の結晶化など、吸収式冷凍機にとって好ましくない事象が起き、異常停止する恐れが生じる。 However, when operating at a low cooling water temperature in a vapor absorption chiller, the temperature of the absorption liquid circulating inside the absorption chiller decreases due to the low cooling water temperature, and at the same time at the in-body heat transfer tube section. Since the temperature of the condensing steam drain is lowered and the condensation pressure is also lowered, the pressure of the steam supplied from the outside and the inside of the cylinder are more than the control amount of the opening adjustment of the control valve that controls the amount of steam supplied from the outside. It is affected by the pressure difference of the condensation pressure at which steam drain condenses in the heat transfer tube.
That is, even if it is attempted to control the steam flow rate by adjusting the opening of the steam control valve, the pressure difference between the steam supply side pressure before the control valve and the in-body heat transfer tube condensing pressure after the control valve increases, and the control valve More steam than necessary will flow into the absorption refrigerator. In the vapor absorption refrigerator, when the steam flows over an appropriate amount of steam, an undesirable event occurs for the absorption refrigerator, such as abnormal heating, excessive cooling, and crystallization of the absorption liquid, which may cause abnormal shutdown.

これらのことから、蒸気吸収式冷凍機では、冷却水温度制御を行う場合には、同時に冷却水温度低下に対応する蒸気制御弁開度の制御を行い、負荷量制御ないし冷水出口温度制御に加えて、蒸気量の過流量制御を行う必要がある。
本発明では、外部センサーで検知した冷却水温度変化を、制御信号として蒸気吸収式冷凍機の運転盤に取り込み、負荷量制御ないし冷水出口温度制御に加えて、冷却水温度変化に対応する蒸気制御弁の開度制御を行うことにより、蒸気吸収式冷凍機の負荷量制御ないし冷水出口温度制御などの単独の制御では達成不可能な高効率運転と加熱用蒸気の過流量を防止する運転が実現できる。なお、ガスをエネルギー源とする吸収式冷温水機の場合には、供給されるガス圧力が蒸気式に比べて格段に低いことと、熱燃焼に変換して運転しているためにこのような圧力差の問題は起こらない。 Therefore, in the steam absorption refrigerator, when controlling the cooling water temperature, the steam control valve opening corresponding to the cooling water temperature drop is controlled at the same time, in addition to the load amount control or the chilled water outlet temperature control. Therefore, it is necessary to control the excessive flow rate of steam.
In the present invention, the coolant temperature change detected by the external sensor is taken into the operation panel of the steam absorption refrigerator as a control signal, and the steam control corresponding to the coolant temperature change is added to the load amount control or the chilled water outlet temperature control. By controlling the opening of the valve, high-efficiency operation that cannot be achieved by independent control such as load control of the vapor absorption chiller or chilled water outlet temperature control and operation that prevents overflow of heating steam are realized. it can. In the case of an absorption chiller / heater using gas as an energy source, the gas pressure supplied is much lower than that of the steam type, and it is operated by converting to thermal combustion. The pressure difference problem does not occur.

本発明の方法及び装置においては、外気温度（乾球温度）及び相対湿度を計測するセンサーを設け、これらのセンサーによる計測データから湿球温度を算出し、算出結果を利用して計測地域周辺の湿球温度を推定する。そして、推定した湿球温度を基準として、循環する冷却水温度を予め設定したデータテーブルの温度になるように冷却塔ファンモータ単独、又は冷却塔ファンモータと冷却水温度調整弁を同時に動作させ、吸収式冷凍機の運転時に所定の冷却水温度に制御された冷却水を循環して蒸気吸収式冷凍機の省エネルギー運転に寄与するように構成されている。   In the method and apparatus of the present invention, sensors for measuring the outside air temperature (dry bulb temperature) and relative humidity are provided, the wet bulb temperature is calculated from the measurement data obtained by these sensors, and the calculation result is used to calculate the surrounding area of the measurement area. Estimate wet bulb temperature. Then, based on the estimated wet bulb temperature, the cooling tower fan motor alone or the cooling tower fan motor and the cooling water temperature adjustment valve are operated simultaneously so that the circulating cooling water temperature becomes the temperature of the preset data table, The cooling water controlled to a predetermined cooling water temperature is circulated during the operation of the absorption chiller so as to contribute to the energy saving operation of the vapor absorption chiller.

本発明の蒸気吸収式冷凍機の省エネルギー制御運転方法は、蒸気吸収式冷凍機を運転するに際し、乾球温度と相対湿度とを逐次計測し、計測結果を入力し演算して得られる数値を元にして、制御盤に予め入力されているデータテーブルにより、蒸気吸収式冷凍機に循環する冷却水温度を選択・設定し、冷却水が設定温度になるように、冷却塔ファンモータの回転数制御、又は冷却塔ファンモータの回転数制御と冷却水温度調整弁制御を組み合わせた制御のいずれかの方法で制御し、制御盤からの信号を吸収式冷凍機の運転盤に受けて、運転盤では、冷水温度を検出して得る冷房負荷信号及び制御盤からの信号により、蒸気制御弁の開度を決定し、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにすることを特徴としている。   The energy saving control operation method of the vapor absorption refrigerator according to the present invention is based on numerical values obtained by sequentially measuring the dry bulb temperature and relative humidity, and inputting and calculating the measurement results when operating the vapor absorption refrigerator. Then, select and set the cooling water temperature circulating to the steam absorption refrigeration machine using the data table input in advance to the control panel, and control the rotation speed of the cooling tower fan motor so that the cooling water reaches the set temperature. Or by controlling the cooling tower fan motor speed control and cooling water temperature control valve control, and receiving the signal from the control panel in the operation panel of the absorption chiller, , By determining the opening of the steam control valve based on the cooling load signal obtained by detecting the chilled water temperature and the signal from the control panel, preventing the steam for heating from flowing excessively and preventing the cooling water from being overcooled To be characterized by To have.

また、本発明の蒸気吸収式冷凍機の省エネルギー制御運転装置は、蒸気吸収式冷凍機と、この蒸気吸収式冷凍機に接続された運転盤と、この蒸気吸収式冷凍機に冷却水を供給するための冷却水ポンプと、この蒸気吸収式冷凍機に接続された蒸気制御弁を備えた蒸気供給管と、前記蒸気吸収式冷凍機からの冷却水を冷却するための冷却塔とを少なくとも備えた冷房用の冷水を供給するための熱源システムにおいて、乾球温度センサー及び相対湿度センサーが接続された演算器と、この演算器に接続された制御盤と、演算器の数値を元にして循環する冷却水温度を表した、制御盤に予め入力されているデータテーブルと、蒸気吸収式冷凍機の冷却水入口ラインに設けられた冷却水温度センサーと、吸収式冷凍機の冷水出口ラインに設けられ、運転盤に接続された冷水温度センサーとを備え、制御盤と冷却塔ファンモータが接続されて、蒸気吸収式冷凍機に循環される冷却水温度が、データテーブルで設定された温度に制御されるようにし、かつ、制御盤と蒸気制御弁とが運転盤を介して接続されて、制御盤から発信される信号を吸収式冷凍機の運転盤に受けて、運転盤では、冷水温度を検出して得る冷房負荷信号及び制御盤からの信号により、蒸気制御弁の開度の上限が決定され、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにしたことを特徴としている。   Moreover, the energy saving control operation device of the vapor absorption refrigeration machine of the present invention supplies a vapor absorption refrigeration machine, an operation panel connected to the vapor absorption refrigeration machine, and cooling water to the vapor absorption refrigeration machine. A cooling water pump, a steam supply pipe having a steam control valve connected to the steam absorption refrigerator, and at least a cooling tower for cooling the cooling water from the steam absorption refrigerator. In a heat source system for supplying cold water for cooling, it circulates based on an arithmetic unit to which a dry bulb temperature sensor and a relative humidity sensor are connected, a control panel connected to the arithmetic unit, and numerical values of the arithmetic unit. A data table that is pre-input to the control panel showing the cooling water temperature, a cooling water temperature sensor provided in the cooling water inlet line of the vapor absorption refrigerator, and a cooling water outlet line of the absorption refrigerator. ,operation And a control panel and a cooling tower fan motor are connected so that the temperature of the cooling water circulated to the vapor absorption refrigerator is controlled to the temperature set in the data table. In addition, the control panel and the steam control valve are connected via the operation panel, and a signal transmitted from the control panel is received by the operation panel of the absorption chiller, and the operation panel is obtained by detecting the cold water temperature. The upper limit of the opening degree of the steam control valve is determined by the cooling load signal and the signal from the control panel, which prevents the heating steam from flowing excessively and prevents the cooling water from being overcooled. .

さらに、本発明の蒸気吸収式冷凍機の省エネルギー制御運転装置は、蒸気吸収式冷凍機と、この蒸気吸収式冷凍機に接続された運転盤と、この蒸気吸収式冷凍機に冷却水を供給するための冷却水ポンプと、この蒸気吸収式冷凍機に接続された蒸気制御弁を備えた蒸気供給管と、前記蒸気吸収式冷凍機からの冷却水を冷却するための冷却塔と、この冷却塔からの冷却水の温度を調節するための冷却水温度調整弁とを少なくとも備えた冷房用の冷水を供給するための熱源システムにおいて、乾球温度センサー及び相対湿度センサーが接続された演算器と、この演算器に接続された制御盤と、演算器の数値を元にして循環する冷却水温度を表した、制御盤に予め入力されているデータテーブルと、蒸気吸収式冷凍機の冷却水入口ラインに設けられた冷却水温度センサーと、吸収式冷凍機の冷水出口ラインに設けられ、運転盤に接続された冷水温度センサーとを備え、制御盤と冷却塔ファンモータ及び冷却水温度調整弁が接続されて、蒸気吸収式冷凍機に循環される冷却水温度が、データテーブルで設定された温度に制御されるようにし、かつ、制御盤と蒸気制御弁とが運転盤を介して接続されて、制御盤から発信される信号を吸収式冷凍機の運転盤に受けて、運転盤では、冷水温度を検出して得る冷房負荷信号及び制御盤からの信号により、蒸気制御弁の開度の上限が決定され、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにしたことを特徴としている。   Furthermore, the energy saving control operation device of the vapor absorption refrigeration machine of the present invention supplies a vapor absorption refrigeration machine, an operation panel connected to the vapor absorption refrigeration machine, and cooling water to the vapor absorption refrigeration machine. A cooling water pump, a steam supply pipe having a steam control valve connected to the steam absorption refrigerator, a cooling tower for cooling the cooling water from the steam absorption refrigerator, and the cooling tower A heat source system for supplying cooling water having at least a cooling water temperature adjustment valve for adjusting the temperature of the cooling water from the air conditioner, and a computing unit to which a dry bulb temperature sensor and a relative humidity sensor are connected; A control panel connected to this computing unit, a data table preliminarily input to the control panel representing the circulating coolant temperature based on the numerical value of the computing unit, and a cooling water inlet line of the vapor absorption refrigerator Provided in A cooling water temperature sensor provided in the cooling water outlet line of the absorption chiller and connected to the operation panel; a control panel, a cooling tower fan motor, and a cooling water temperature regulating valve are connected to The temperature of the cooling water circulated to the absorption refrigerator is controlled to the temperature set in the data table, and the control panel and the steam control valve are connected via the operation panel and transmitted from the control panel. The operation panel of the absorption refrigeration machine receives the generated signal, and the operation panel determines the upper limit of the opening of the steam control valve based on the cooling load signal obtained by detecting the chilled water temperature and the signal from the control panel. It is characterized by preventing excessive flow of steam and preventing excessive cooling of cold water.

本発明は上記のように構成されているので、つぎのような効果を奏する。
（１）乾球温度と相対湿度を計測して湿球温度を演算により導く計算結果を用い、この湿球温度に順応し、予め設定したデータテーブルの温度になるように、冷却塔で冷却する冷却水温度を自動的に温度設定することができ、このため、蒸気吸収式冷凍機に入る冷却水循環温度を低下させて冷温水機の能力、効率を向上させることができる。
（２）外気湿球温度を算出して、蒸気吸収式冷凍機に入る冷温水温度を低下させて冷凍機が消費する蒸気消費量などの加熱用熱量を節減することができる。また、蒸気吸収式冷凍機の冷却水変流量制御を行うシステムにおいて、変流量運転時に生じる運転効率低下を回復させることができる。
（３）冷却水温度制御機能を有する制御装置から発信される信号（冷却水温度の変換信号）を受けて、蒸気制御弁の開度の上限を決定し、加熱用蒸気が過大に流れることを防止（ピークカット運転）し、冷水の冷やし過ぎを防止して、高効率運転を可能にすることができる。 Since this invention is comprised as mentioned above, there exist the following effects.
(1) Measure the dry bulb temperature and relative humidity and use the calculation result to derive the wet bulb temperature by calculation, adapt to this wet bulb temperature, and cool in the cooling tower so that it becomes the temperature of the preset data table The temperature of the cooling water can be automatically set. For this reason, the cooling water circulating temperature entering the steam absorption refrigerator can be lowered to improve the capacity and efficiency of the cold / hot water machine.
(2) to calculate the outside air wet-bulb temperature, can it to save heating heat such as steam consumption refrigerator lowering the hot and cold water temperature entering the vapor absorption chiller consumes. Moreover, in the system which performs the cooling water variable flow rate control of the vapor absorption refrigeration machine, it is possible to recover the lowering of the operation efficiency that occurs during the variable flow rate operation.
(3) Upon receiving a signal (cooling water temperature conversion signal) transmitted from a control device having a cooling water temperature control function, the upper limit of the opening of the steam control valve is determined, and the heating steam flows excessively. It is possible to prevent (peak cut operation), prevent overcooling of cold water, and enable high-efficiency operation.

蒸気吸収式冷凍機の運転時に所定の冷却水温度に制御された冷却水を循環して蒸気吸収式冷凍機の省エネルギー運転を行うという目的を、推定した湿球温度を基準として、循環する冷却水温度を予めデータテーブルの温度を選択し制御されるように、冷却塔ファンモータ単独、又は冷却塔ファンモータと冷却水温度調整弁を同時に動作させることにより実現した。   Cooling water that circulates based on the estimated wet bulb temperature for the purpose of circulating the cooling water controlled to a predetermined cooling water temperature during the operation of the vapor absorption refrigerator and performing energy saving operation of the steam absorption refrigerator The temperature was realized by operating the cooling tower fan motor alone or the cooling tower fan motor and the cooling water temperature regulating valve at the same time so that the temperature in the data table was selected and controlled in advance.

以下、本発明の実施の形態について説明するが、本発明は下記の実施の形態に何ら限定されるものではなく、適宜変更して実施することができるものである。
図１は、本発明の実施の第１形態による蒸気吸収式冷凍機の省エネルギー運転装置を示し、図３はその制御フローを示している。 Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments, and can be implemented with appropriate modifications.
FIG. 1 shows an energy saving operation device of a vapor absorption chiller according to a first embodiment of the present invention, and FIG. 3 shows a control flow thereof.

図１に示すように、冷房用の冷水を供給するための熱源システムは、蒸気吸収式冷凍機１０と、この吸収式冷凍機１０に冷却水を供給するための冷却水ポンプ１２と、前記蒸気吸収式冷凍機１０からの冷却水を冷却するための冷却塔１４とを少なくとも備えている。１８は冷水ポンプ、２２はファンモータの駆動信号接続用端子、２４は冷却ファン、２６は冷却塔ファンモータである。なお、冷却塔ファンモータ２６の制御器は制御盤３４内に搭載されている。   As shown in FIG. 1, a heat source system for supplying cooling water for cooling includes a steam absorption refrigeration machine 10, a cooling water pump 12 for supplying cooling water to the absorption chiller 10, and the steam. And a cooling tower 14 for cooling the cooling water from the absorption refrigerator 10. 18 is a cold water pump, 22 is a fan motor drive signal connection terminal, 24 is a cooling fan, and 26 is a cooling tower fan motor. The controller for the cooling tower fan motor 26 is mounted in the control panel 34.

さらに、蒸気吸収式冷凍機１０に運転盤４２が接続され、この蒸気吸収式冷凍機１０に水蒸気を供給する蒸気供給管４４に蒸気制御弁４６が設けられ、制御盤３４と蒸気制御弁４６とが運転盤４２を介して接続されて、制御盤３４から発信される信号を受けて蒸気制御弁４６の開度の上限が決定され、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないように構成されている。   Further, an operation panel 42 is connected to the vapor absorption refrigeration machine 10, a steam control valve 46 is provided in a steam supply pipe 44 that supplies water vapor to the vapor absorption refrigeration machine 10, and the control panel 34, the steam control valve 46, Are connected via the operation panel 42, and the upper limit of the opening degree of the steam control valve 46 is determined in response to a signal transmitted from the control panel 34, thereby preventing the heating steam from flowing excessively and cooling the cold water. It is configured not to occur too much.

このように構成された熱源システムにおいて、乾球温度センサー２８及び相対湿度センサー３０が接続された演算器３２と、この演算器３２に接続された制御盤３４と、演算器３２の数値を元にして循環する冷却水温度を表した、制御盤３４に予め入力されているデータテーブル３６と、蒸気吸収式冷凍機１０の冷却水入口ライン３８に設けられた冷却水温度センサー４０と、吸収式冷凍機１０の冷水出口ライン４８に設けられた冷水温度センサー５０とを備え、この冷水温度センサー５０と運転盤４２が接続され、制御盤３４と冷却塔ファンモータ２６が接続されて、吸収冷温水機１０に循環される冷却水温度がデータテーブル３６で設定された温度に制御され、かつ、制御盤３４からの信号を吸収式冷凍機１０の運転盤４２に受けて、冷水温度検出により得られる運転盤４２への冷房負荷信号及び制御盤３４からの信号により、運転盤４２が信号を発して蒸気制御弁４６の開度を決定し、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないように構成されている。
図２８は、冷却水温度と蒸気制御弁４６の開度との関係の一例を示している。例えば、冷却水温度が３０℃の時は、蒸気制御弁４６の開度を８０％とし、冷却水温度が２２℃の時は、蒸気制御弁４６開度を３０％とするように制御する。 In the heat source system configured as described above, based on the arithmetic unit 32 to which the dry bulb temperature sensor 28 and the relative humidity sensor 30 are connected, the control panel 34 connected to the arithmetic unit 32, and the numerical values of the arithmetic unit 32. A data table 36 that is input in advance to the control panel 34, a cooling water temperature sensor 40 provided in the cooling water inlet line 38 of the vapor absorption refrigerator 10, and an absorption refrigeration. The cold water temperature sensor 50 provided in the cold water outlet line 48 of the machine 10 is connected, the cold water temperature sensor 50 and the operation panel 42 are connected, the control panel 34 and the cooling tower fan motor 26 are connected, and the absorption cold water heater 10 is controlled to a temperature set in the data table 36, and a signal from the control panel 34 is received by the operation panel 42 of the absorption chiller 10 to cool the cooling water. Based on the cooling load signal to the operation panel 42 obtained by temperature detection and the signal from the control panel 34, the operation panel 42 generates a signal to determine the opening degree of the steam control valve 46, and the heating steam flows excessively. It is configured to prevent and prevent overcooling of the cold water.
FIG. 28 shows an example of the relationship between the cooling water temperature and the opening degree of the steam control valve 46. For example, when the cooling water temperature is 30 ° C., the opening degree of the steam control valve 46 is set to 80%, and when the cooling water temperature is 22 ° C., the opening degree of the steam control valve 46 is set to 30%.

このように構成された装置において、図３に示すように、吸収式冷凍機１０を運転するに際し、乾球温度と相対湿度とを逐次計測し、計測結果を入力し演算して得られる数値（湿球温度）を元にして、制御盤３４に予め入力されているデータテーブル３６により、吸収式冷凍機１０に循環する冷却水温度を選択・設定し、冷却水が設定温度になるように、冷却塔ファンモータ２６の回転数を制御をする。すなわち、自動設定した温度になるように冷却塔ファンモータ２６の回転数を可変させて制御する。   In the apparatus configured as described above, as shown in FIG. 3, when the absorption refrigerator 10 is operated, the dry bulb temperature and the relative humidity are sequentially measured, and numerical values obtained by inputting and calculating the measurement results ( Based on the wet bulb temperature), the temperature of the cooling water circulating to the absorption refrigerator 10 is selected and set by the data table 36 input in advance to the control panel 34 so that the cooling water becomes the set temperature. The number of rotations of the cooling tower fan motor 26 is controlled. That is, the rotation speed of the cooling tower fan motor 26 is varied and controlled so that the temperature is automatically set.

図７は、データテーブルの一例を示し、外気状態（乾球温度、相対湿度）に対する冷却水設定温度（Ｔｃｗ℃）を表している。すなわち、乾球温度と相対湿度の計測結果から演算して得られる数値を元にして、図７のデータテーブルに示すように１０℃から３２℃までの間で設定した、一例として６階段の温度（Ｔｃｗ℃）に設定する。この場合、設定温度（Ｔｃｗ）、設定温度の幅は、運転条件、外気条件により修正可能な変数である。なお、６階段をさらに増やし、温度幅を小さく修正することも可能である。このデータテーブルを用いて、図８に示すフローにしたがって、冷却水設定温度への制御が行われる。   FIG. 7 shows an example of the data table, which represents the cooling water set temperature (Tcw ° C.) with respect to the outside air state (dry bulb temperature, relative humidity). That is, based on numerical values obtained by calculation from the measurement results of dry bulb temperature and relative humidity, as shown in the data table of FIG. Set to (Tcw ° C). In this case, the set temperature (Tcw) and the set temperature range are variables that can be corrected according to the operating conditions and the outside air conditions. It is also possible to further increase the six steps and correct the temperature range to be small. Using this data table, the control to the cooling water set temperature is performed according to the flow shown in FIG.

設定温度への制御を冷却塔ファン２４の速度制御によって行う場合について説明する。すなわち、この時の速度制御目標値をＴｃｗ（データテーブル値）とする。つぎに、設定温度６パターンにおける制御の例を挙げる。
図１０は６パターンのうちのパターン（１）を示している。このパターン（１）は、Ｔｃｗ３２℃の時に冷却水温度が３２℃から３７℃の間で変化すると、ファン速度を低速回転から１００％回転の間で変化させるパターンを示している。同様に、図１１はパターン（２）を、図１２はパターン（３）を、図１３はパターン（４）を、図１４はパターン（５）を、図１５はパターン（６）を示している。 A case where the control to the set temperature is performed by the speed control of the cooling tower fan 24 will be described. That is, the speed control target value at this time is Tcw (data table value). Next, an example of control in the set temperature six patterns will be given.
FIG. 10 shows pattern (1) out of six patterns. This pattern (1) shows a pattern in which when the cooling water temperature changes between 32 ° C. and 37 ° C. when Tcw is 32 ° C., the fan speed is changed between low speed rotation and 100% rotation. Similarly, FIG. 11 shows pattern (2), FIG. 12 shows pattern (3), FIG. 13 shows pattern (4), FIG. 14 shows pattern (5), and FIG. 15 shows pattern (6). .

図２は、本発明の実施の第２形態による蒸気吸収式冷凍機の省エネルギー運転装置を示し、図４はその制御フローを示している。   FIG. 2 shows an energy saving operation device for a vapor absorption refrigerator according to a second embodiment of the present invention, and FIG. 4 shows a control flow thereof.

図２に示すように、冷房用の冷水を供給するための熱源システムは、蒸気吸収式冷凍機１０と、この吸収式冷凍機１０に冷却水を供給するための冷却水ポンプ１２と、前記吸収式冷凍機１０からの冷却水を冷却するための冷却塔１４と、この冷却塔１４からの冷却水の温度を調節するための冷却水温度調整弁１６とを少なくとも備えている。１８は冷水ポンプ、２０は冷却水温度調整弁の駆動装置、２２はファンモータの駆動信号接続用端子、２４は冷却ファン、２６は冷却塔ファンモータである。なお、冷却水温度調整弁１６は、一例として三方弁で構成され、設定温度になるように、三方弁を流れる冷却水流量を制御する構成である。また、冷却塔ファンモータ２６の制御器、弁１６の制御器は制御盤３４ａ内に搭載されている。   As shown in FIG. 2, the heat source system for supplying cooling water for cooling includes a vapor absorption refrigerator 10, a cooling water pump 12 for supplying cooling water to the absorption refrigerator 10, and the absorption. The cooling tower 14 for cooling the cooling water from the type refrigerator 10 and the cooling water temperature adjusting valve 16 for adjusting the temperature of the cooling water from the cooling tower 14 are provided. Reference numeral 18 denotes a cold water pump, 20 denotes a driving device for a cooling water temperature adjusting valve, 22 denotes a fan motor drive signal connection terminal, 24 denotes a cooling fan, and 26 denotes a cooling tower fan motor. In addition, the cooling water temperature adjustment valve 16 is comprised with a three-way valve as an example, and is a structure which controls the flow volume of the cooling water which flows through a three-way valve so that it may become preset temperature. The controller for the cooling tower fan motor 26 and the controller for the valve 16 are mounted in the control panel 34a.

さらに、蒸気吸収式冷凍機１０に運転盤４２が接続され、この蒸気吸収式冷凍機１０に水蒸気を供給する蒸気供給管４４に蒸気制御弁４６が設けられ、制御盤３４ａと蒸気制御弁４６とが運転盤４２を介して接続されて、制御盤３４ａから発信される信号を受けて蒸気制御弁４６の開度の上限が決定され、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないように構成されている。   Further, an operation panel 42 is connected to the vapor absorption refrigeration machine 10, a steam control valve 46 is provided in a steam supply pipe 44 that supplies water vapor to the vapor absorption refrigeration machine 10, and the control panel 34 a, the steam control valve 46, Are connected via the operation panel 42, and the upper limit of the opening degree of the steam control valve 46 is determined by receiving a signal transmitted from the control panel 34a, preventing the heating steam from flowing excessively, and cooling the cold water. It is configured not to occur too much.

このように構成された熱源システムにおいて、乾球温度センサー２８及び相対湿度センサー３０が接続された演算器３２と、この演算器３２に接続された制御盤３４ａと、演算器３２の数値を元にして循環する冷却水温度を表した、制御盤３４ａに予め入力されているデータテーブル３６と、吸収式冷凍機１０の冷却水入口ライン３８に設けられた冷却水温度センサー４０と、吸収式冷凍機１０の冷水出口ライン４８に設けられた冷水温度センサー５０とを備え、この冷水温度センサー５０と運転盤４２が接続され、制御盤３４ａと冷却塔ファンモータ２６及び冷却水温度調整弁１６の両方が接続されて、吸収式冷凍機１０に循環される冷却水温度がデータテーブル３６で設定された温度に制御され、かつ、制御盤３４ａからの信号を吸収式冷凍機１０の運転盤４２に受けて、冷水温度検出により得られる運転盤４２への冷房負荷信号及び制御盤３４ａからの信号により、運転盤４２が信号を発して蒸気制御弁４６の開度を決定し、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないように構成されている。
図２８は、冷却水温度と蒸気制御弁４６の開度との関係の一例を示している。例えば、冷却水温度が３０℃の時は、蒸気制御弁４６の開度を８０％とし、冷却水温度が２２℃の時は、蒸気制御弁４６開度を３０％とするように制御する。 In the heat source system configured as described above, based on the arithmetic unit 32 to which the dry bulb temperature sensor 28 and the relative humidity sensor 30 are connected, the control panel 34a connected to the arithmetic unit 32, and the numerical values of the arithmetic unit 32. A data table 36 that is input in advance to the control panel 34a, the cooling water temperature sensor 40 provided in the cooling water inlet line 38 of the absorption chiller 10, and an absorption chiller. The cold water temperature sensor 50 provided in the 10 cold water outlet lines 48 is connected to the cold water temperature sensor 50 and the operation panel 42, and both the control panel 34a, the cooling tower fan motor 26 and the cooling water temperature adjustment valve 16 are connected. The cooling water temperature that is connected and circulated to the absorption refrigerator 10 is controlled to the temperature set in the data table 36, and the signal from the control panel 34a is absorbed. In response to the cooling load signal to the operation panel 42 and the signal from the control panel 34a, which is received by the operation panel 42 of the refrigerator 10 and detected by the cold water temperature detection, the operation panel 42 generates a signal to increase the opening of the steam control valve 46. It is determined so that the heating steam is prevented from flowing excessively and the cooling water is not cooled too much.
FIG. 28 shows an example of the relationship between the cooling water temperature and the opening degree of the steam control valve 46. For example, when the cooling water temperature is 30 ° C., the opening degree of the steam control valve 46 is set to 80%, and when the cooling water temperature is 22 ° C., the opening degree of the steam control valve 46 is set to 30%.

このように構成された装置において、図４に示すように、吸収式冷凍機１０を運転するに際し、乾球温度と相対湿度とを逐次計測し、計測結果を入力し演算して得られる数値（湿球温度）を元にして、制御盤３４ａに予め入力されているデータテーブル３６により、吸収式冷凍機１０に循環する冷却水温度を選択・設定し、冷却水が設定温度になるように、冷却塔ファンモータ２６の回転数及び冷却水温度調整弁１６を制御をする。すなわち、自動設定した温度になるように冷却塔ファンモータ２６の回転数を可変させ、冷却水温度の変化に併せて、冷却水温度調整弁１６の作動設定値を連動可変させて制御する。   In the apparatus configured as described above, as shown in FIG. 4, when the absorption refrigerator 10 is operated, the dry bulb temperature and the relative humidity are sequentially measured, and numerical values obtained by inputting and calculating the measurement results ( Based on the wet bulb temperature), the temperature of the cooling water circulating to the absorption refrigerator 10 is selected and set by the data table 36 input in advance to the control panel 34a so that the cooling water becomes the set temperature. The number of rotations of the cooling tower fan motor 26 and the cooling water temperature adjusting valve 16 are controlled. That is, the number of rotations of the cooling tower fan motor 26 is varied so that the temperature is automatically set, and the operation set value of the cooling water temperature adjustment valve 16 is controlled in conjunction with the change in the cooling water temperature.

吸収式冷凍機１０からの冷却水温度が高い時は、図５に示すように吸収式冷凍機１０からの冷却水の全量又は一部を冷却塔１４へ送り、ここで冷却し、冷却水温度調整弁１６の冷却塔側から入る量と冷却塔をバイパスして弁１６に入る量を制御し、温度を調整して、冷却水ポンプ１２により吸収式冷凍機１０に循環する。
一方、冷却塔１４からの冷却水出口温度が低く、吸収式冷凍機入口温度が所定の温度より低い時は、図６に示すように、吸収式冷凍機１０から戻る冷却水を冷却塔１４へ送らずに、全量又は一部がバイパスして冷却水温度調整弁１６を経由して、冷却水ポンプ１２により吸収冷温水機１０に循環する。すなわち、冷却水温度調整弁１６を制御して、冷却塔側から入る量と冷却塔をバイパスして弁１６に入る量を制御して、吸収冷温水機１０に入る冷却水温度を制御している。 When the temperature of the cooling water from the absorption chiller 10 is high, as shown in FIG. 5, the whole or part of the cooling water from the absorption chiller 10 is sent to the cooling tower 14, where it is cooled, and the cooling water temperature The amount of the regulating valve 16 that enters from the cooling tower side and the amount that enters the valve 16 by bypassing the cooling tower are controlled, the temperature is adjusted, and the cooling water pump 12 circulates it to the absorption refrigerator 10.
On the other hand, when the cooling water outlet temperature from the cooling tower 14 is low and the absorption refrigerator inlet temperature is lower than a predetermined temperature, the cooling water returning from the absorption refrigerator 10 is sent to the cooling tower 14 as shown in FIG. Without being sent, the whole or a part is bypassed and circulated to the absorption chiller / heater 10 by the cooling water pump 12 via the cooling water temperature adjusting valve 16. That is, the cooling water temperature adjusting valve 16 is controlled, the amount entering from the cooling tower side and the amount entering the valve 16 bypassing the cooling tower are controlled, and the cooling water temperature entering the absorption chiller water heater 10 is controlled. Yes.

図７は、データテーブルの一例を示し、外気状態（乾球温度、相対湿度）に対する冷却水設定温度（Ｔｃｗ℃）を表している。すなわち、乾球温度と相対湿度の計測結果から演算して得られる数値を元にして、図７のデータテーブルに示すように１０℃から３２℃までの間で設定した、一例として６階段の温度（Ｔｃｗ℃）に設定する。この場合、設定温度（Ｔｃｗ）、設定温度の幅は、運転条件、外気条件により修正可能な変数である。なお、６階段をさらに増やし、温度幅を小さく修正することも可能である。このデータテーブルを用いて、図９に示すフローにしたがって、冷却水設定温度への制御が行われる。   FIG. 7 shows an example of the data table, which represents the cooling water set temperature (Tcw ° C.) with respect to the outside air state (dry bulb temperature, relative humidity). That is, based on numerical values obtained by calculation from the measurement results of dry bulb temperature and relative humidity, as shown in the data table of FIG. Set to (Tcw ° C). In this case, the set temperature (Tcw) and the set temperature range are variables that can be corrected according to the operating conditions and the outside air conditions. It is also possible to further increase the six steps and correct the temperature range to be small. Using this data table, control to the cooling water set temperature is performed according to the flow shown in FIG.

つぎに、設定温度への制御を冷却塔ファンモータ２６の回転数制御と冷却水温度調整弁１６で行う場合について説明する。本例では、実施の第１形態におけるファンの速度制御に加えて、弁開閉制御を行う。すなわち、この時の弁開度制御基準値をＴｃｗ（データテーブル値）とする。つぎに、設定温度６パターンにおける制御の例を挙げる。
図１６は６段階のうちのパターン（１）の冷却塔ファン制御を示し、図１７は冷却水温度調整弁制御を示している。このパターン（１）の図１７は、Ｔｃｗ３２℃の時に冷却水温度が３２℃から２７℃の間で変化すると、弁１６の開度を全開から全閉の間で変化させるパターンを示している。同様に、図１８、図１９はパターン（２）を、図２０、図２１はパターン（３）を、図２２、図２３はパターン（４）を、図２４、図２５はパターン（５）を、図２６、図２７はパターン（６）を示している。 Next, the case where the control to the set temperature is performed by the rotation speed control of the cooling tower fan motor 26 and the cooling water temperature adjusting valve 16 will be described. In this example, valve opening / closing control is performed in addition to the fan speed control in the first embodiment. In other words, the valve opening control reference value at this time is Tcw (data table value). Next, an example of control in the set temperature six patterns will be given.
FIG. 16 shows the cooling tower fan control of the pattern (1) among the six stages, and FIG. 17 shows the cooling water temperature adjusting valve control. FIG. 17 of this pattern (1) shows a pattern in which when the cooling water temperature changes between 32 ° C. and 27 ° C. at Tcw of 32 ° C., the opening degree of the valve 16 is changed from fully open to fully closed. Similarly, FIGS. 18 and 19 show pattern (2), FIGS. 20 and 21 show pattern (3), FIGS. 22 and 23 show pattern (4), and FIGS. 24 and 25 show pattern (5). 26 and 27 show the pattern (6).

本発明の実施の第１形態による蒸気吸収式冷凍機の省エネルギー制御運転装置の系統的概略構成図である。It is a systematic schematic block diagram of the energy-saving control operation apparatus of the vapor | steam absorption refrigerator by 1st Embodiment of this invention. 本発明の実施の第２形態による蒸気吸収式冷凍機の省エネルギー制御運転装置の系統的概略構成図である。It is a systematic schematic block diagram of the energy-saving control operation apparatus of the vapor | steam absorption refrigerator by the 2nd Embodiment of this invention. 図１に示す装置の制御フロー図である。It is a control flow figure of the apparatus shown in FIG. 図２に示す装置の制御フロー図である。FIG. 3 is a control flow diagram of the apparatus shown in FIG. 2. 冷却水温度が高い時の冷却水の流れを示す説明図である。It is explanatory drawing which shows the flow of the cooling water when a cooling water temperature is high. 冷却水温度が低い時の冷却水の流れを示す説明図である。It is explanatory drawing which shows the flow of the cooling water when a cooling water temperature is low. データテーブルの一例で、外気状態に対する冷却水設定温度を示す表である。It is an example of a data table, and is a table | surface which shows the cooling water preset temperature with respect to an external air state. 図７に示すデータテーブルの冷却水設定温度に、冷却塔ファンモータにより制御するフロー図である。FIG. 8 is a flowchart for controlling the cooling water set temperature of the data table shown in FIG. 7 by a cooling tower fan motor. 図７に示すデータテーブルの冷却水設定温度に、冷却塔ファンモータ及び冷却水温度調整弁により制御するフロー図である。FIG. 8 is a flowchart for controlling the cooling water set temperature of the data table shown in FIG. 7 by a cooling tower fan motor and a cooling water temperature adjusting valve. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（１）を示すグラフである。It is a graph which shows the pattern (1) in the case of performing control to setting temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（２）を示すグラフである。It is a graph which shows the pattern (2) in the case of performing control to preset temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（３）を示すグラフである。It is a graph which shows the pattern (3) when controlling to preset temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（４）を示すグラフである。It is a graph which shows the pattern (4) when controlling to preset temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（５）を示すグラフである。It is a graph which shows the pattern (5) in the case of performing control to preset temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファンモータの回転数を制御して行う場合のパターン（６）を示すグラフである。It is a graph which shows the pattern (6) in the case of performing control to preset temperature by controlling the rotation speed of a cooling tower fan motor. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（１）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (1) in the case of performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（１）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (1) when performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（２）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (2) when performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（２）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (2) when performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（３）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (3) when performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（３）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (3) when performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（４）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (4) in the case of performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（４）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (4) when performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（５）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (5) when performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（５）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (5) when performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（６）における冷却塔ファン制御を示すグラフである。It is a graph which shows the cooling tower fan control in the pattern (6) when performing control to setting temperature by cooling tower fan control and cooling water temperature control valve control. 設定温度への制御を冷却塔ファン制御及び冷却水温度調整弁制御にて行う場合のパターン（６）における冷却水温度調整弁制御を示すグラフである。It is a graph which shows the cooling water temperature adjustment valve control in the pattern (6) in the case of performing control to setting temperature by cooling tower fan control and cooling water temperature adjustment valve control. 冷却水温度と蒸気制御弁の開度との関係を示すグラフである。It is a graph which shows the relationship between a cooling water temperature and the opening degree of a steam control valve.

符号の説明Explanation of symbols

１０ 蒸気吸収式冷凍機
１２ 冷却水ポンプ
１４ 冷却塔
１６ 冷却水温度調整弁
１８ 冷水ポンプ
２０ 弁の駆動装置
２２ ファンモータの駆動信号接続用端子
２４ 冷却ファン
２６ 冷却塔ファンモータ
２８ 乾球温度センサー
３０ 相対湿度センサー
３２ 演算器
３４ 制御盤
３４ａ 制御盤
３６ データテーブル
３８ 冷却水入口ライン
４０ 冷却水温度センサー
４２ 運転盤
４４ 蒸気供給管
４６ 蒸気制御弁
４８ 冷水出口ライン
５０ 冷水温度センサー DESCRIPTION OF SYMBOLS 10 Steam absorption refrigerator 12 Cooling water pump 14 Cooling tower 16 Cooling water temperature control valve 18 Cooling water pump 20 Valve drive device 22 Fan motor drive signal connection terminal 24 Cooling fan 26 Cooling tower fan motor 28 Dry bulb temperature sensor 30 Relative humidity sensor 32 Calculator 34 Control panel 34a Control panel 36 Data table 38 Cooling water inlet line 40 Cooling water temperature sensor 42 Operation panel 44 Steam supply pipe 46 Steam control valve 48 Cold water outlet line 50 Cooling water temperature sensor

Claims (3)

冷水出口温度により蒸気制御弁を制御する蒸気吸収式冷凍機を運転するに際し、冷却塔周辺の乾球温度と相対湿度とを逐次計測し、冷却塔と蒸気吸収式冷凍機とを循環する冷却水の温度が、計測された乾球温度と相対湿度を入力し演算して得られる湿球温度に応じた、冷却塔で冷却可能な低い温度になるように、制御盤に予め入力されているデータテーブルにより、目標冷却水設定温度を選択・設定し、
冷却水が前記目標冷却水設定温度になるように、冷却塔ファンモータの回転数制御、又は冷却塔ファンモータの回転数制御と冷凍機から冷却塔への冷却水の一部を冷却塔をバイパスさせるためのバイパス弁の機能を備えた冷却水温度調整弁制御を組み合せた制御のいずれかの方法で制御し、
制御盤からの目標冷却水設定温度信号を吸収式冷凍機の運転盤に受けて、冷水出口温度により蒸気制御弁を制御する運転盤では、制御盤からの目標冷却水設定温度信号に対応して蒸気制御弁の開度の上限を決定して制御することで、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにすることを特徴とする蒸気吸収式冷凍機の省エネルギー制御運転方法。 When operating a steam absorption chiller that controls the steam control valve according to the chilled water outlet temperature, the cooling water that circulates between the cooling tower and the steam absorption refrigeration equipment is measured by sequentially measuring the dry bulb temperature and relative humidity around the cooling tower. Is pre-input to the control panel so that the temperature of the cooler can be cooled by the cooling tower in accordance with the wet bulb temperature obtained by inputting and calculating the measured dry bulb temperature and relative humidity . Select and set the target cooling water set temperature using the table,
The cooling tower fan motor rotation speed control or cooling tower fan motor rotation speed control and a part of the cooling water from the refrigerator to the cooling tower are bypassed to the cooling tower so that the cooling water reaches the target cooling water set temperature. Control by any method of control combined with cooling water temperature adjustment valve control with a bypass valve function to
The target cooling water set temperature signal from the control panel receives the operation panel of the absorption refrigerator, the operation panel to control the steam control valve by coolant outlet temperature versus the target cooling water set temperature signal from the control panel response Then, by determining and controlling the upper limit of the opening of the steam control valve, it is possible to prevent the heating steam from flowing excessively and prevent the cooling water from being overcooled. Machine energy-saving control operation method. 蒸気吸収式冷凍機と、この蒸気吸収式冷凍機に接続され冷水出口温度により蒸気制御弁を制御する運転盤と、この蒸気吸収式冷凍機に冷却塔からの冷却水を供給して循環するための冷却水ポンプと、この蒸気吸収式冷凍機に接続された蒸気制御弁を備えた蒸気供給管と、前記蒸気吸収式冷凍機からの冷却水を冷却するための冷却塔とを少なくとも備えた冷房用の冷水を供給するための熱源システムにおいて、
冷却塔周辺の乾球温度センサー及び相対湿度センサーが接続され、計測された乾球温度及び相対湿度を演算して得られる湿球温度に応じて、冷却水の温度が冷却塔で冷却可能な低い温度になるように、制御盤に予め入力されているデータテーブルにより、目標冷却水設定温度を選択・設定する、演算器及びこれに接続された制御盤と、蒸気吸収式冷凍機の冷却水入口ラインに設けられ冷却水温度を計測する冷却水温度センサーと、吸収式冷凍機の冷水出口ラインに設けられ、運転盤に接続された冷水温度センサーと、を備え、
制御盤は前記冷却水温度が、データテーブルで設定された目標冷却水設定温度になるように、冷却塔ファンモータを制御し、
かつ、制御盤と運転盤が接続されて、制御盤から発信される目標冷却水設定温度信号を吸収式冷凍機の運転盤に受け、冷水温度センサーにより冷水出口温度を検出して得る冷房負荷信号により蒸気制御弁を制御する運転盤では、制御盤からの目標冷却水設定温度信号に対応して蒸気制御弁の開度の上限を決定して制御することで、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにしたことを特徴とする蒸気吸収式冷凍機の省エネルギー制御運転装置。 A steam absorption refrigerator, an operation panel connected to the vapor absorption refrigerator and controlling a steam control valve according to a cold water outlet temperature, and supplying cooling water from a cooling tower to the steam absorption refrigerator for circulation . A cooling water pump, a steam supply pipe provided with a steam control valve connected to the steam absorption refrigeration machine, and a cooling tower for cooling the cooling water from the steam absorption refrigeration machine In the heat source system for supplying cold water for
A dry bulb temperature sensor and a relative humidity sensor around the cooling tower are connected , and the temperature of the cooling water is low enough to be cooled by the cooling tower according to the wet bulb temperature obtained by calculating the measured dry bulb temperature and relative humidity. Select and set the target cooling water set temperature based on the data table previously input to the control panel so as to reach the temperature, the calculator and the control panel connected thereto, and the cooling water inlet of the steam absorption refrigerator A cooling water temperature sensor for measuring the cooling water temperature provided in the line, and a cold water temperature sensor provided in the cooling water outlet line of the absorption refrigerator and connected to the operation panel,
The control panel the cooling water temperature, so that the set target coolant temperature setting data table, Gyoshi control the cooling tower fan motor,
And it is connected the control panel and the OPERATION board is, accept the target cooling water set temperature signal transmitted from the control board to the operation panel of the absorption refrigerating machine may detect the coolant outlet temperature by the cold water temperature sensor cooling In the operation panel that controls the steam control valve by the load signal, the upper limit of the opening of the steam control valve is determined and controlled in response to the target cooling water set temperature signal from the control panel , so that the heating steam becomes excessive. An energy-saving control operation device for a vapor absorption refrigeration machine, characterized in that it is prevented from flowing and excessive cooling of cold water does not occur. 蒸気吸収式冷凍機と、この蒸気吸収式冷凍機に接続され冷水出口温度により蒸気制御弁を制御する運転盤と、この蒸気吸収式冷凍機に冷却塔からの冷却水を供給して循環するための冷却水ポンプと、この蒸気吸収式冷凍機に接続された蒸気制御弁を備えた蒸気供給管と、前記蒸気吸収式冷凍機からの冷却水を冷却するための冷却塔と、この冷却塔からの冷却水の温度を調節するための冷却水温度調整弁とを少なくとも備えた冷房用の冷水を供給するための熱源システムにおいて、
冷却塔周辺の乾球温度センサー及び相対湿度センサーが接続され、計測された乾球温度及び相対湿度を演算して得られる湿球温度に応じて、冷却水の温度が冷却塔で冷却可能な低い温度になるように、制御盤に予め入力されているデータテーブルにより、目標冷却水設定温度を選択・設定する、演算器及びこれに接続された制御盤と、蒸気吸収式冷凍機の冷却水入口ラインに設けられ冷却水温度を計測する冷却水温度センサーと、吸収式冷凍機の冷水出口ラインに設けられ、運転盤に接続された冷水温度センサーと、を備え、
制御盤は前記冷却水温度が、データテーブルで設定された目標冷却水設定温度になるように、冷却塔ファンモータ及び冷凍機から冷却塔への冷却水の一部を冷却塔をバイパスさせるためのバイパス弁の機能を備えた冷却水温度調整弁を制御し、
かつ、制御盤と運転盤が接続されて、制御盤から発信される目標冷却水設定温度信号を吸収式冷凍機の運転盤に受け、冷水温度センサーにより冷水出口温度を検出して得る冷房負荷信号により蒸気制御弁を制御する運転盤では、制御盤からの目標冷却水設定温度信号に対応して蒸気制御弁の開度の上限を決定して制御することで、加熱用蒸気が過大に流れることを防止し、冷水の冷やし過ぎが生じないようにしたことを特徴とする蒸気吸収式冷凍機の省エネルギー制御運転装置。 A steam absorption refrigerator, an operation panel connected to the vapor absorption refrigerator and controlling a steam control valve according to a cold water outlet temperature, and supplying cooling water from a cooling tower to the steam absorption refrigerator for circulation . A cooling water pump, a steam supply pipe having a steam control valve connected to the steam absorption refrigeration machine, a cooling tower for cooling the cooling water from the steam absorption refrigeration machine, and the cooling tower A heat source system for supplying cooling water having at least a cooling water temperature adjusting valve for adjusting the temperature of the cooling water of
A dry bulb temperature sensor and a relative humidity sensor around the cooling tower are connected , and the temperature of the cooling water is low enough to be cooled by the cooling tower according to the wet bulb temperature obtained by calculating the measured dry bulb temperature and relative humidity. Select and set the target cooling water set temperature based on the data table previously input to the control panel so as to reach the temperature, the calculator and the control panel connected thereto, and the cooling water inlet of the steam absorption refrigerator A cooling water temperature sensor for measuring the cooling water temperature provided in the line, and a cold water temperature sensor provided in the cooling water outlet line of the absorption refrigerator and connected to the operation panel,
The control panel is for bypassing the cooling tower with a part of the cooling water from the cooling tower fan motor and the refrigerator to the cooling tower so that the cooling water temperature becomes the target cooling water set temperature set in the data table . Gyoshi control the cooling water temperature control valve having the function of the bypass valve,
And it is connected the control panel and the OPERATION board is, accept the target cooling water set temperature signal transmitted from the control board to the operation panel of the absorption refrigerating machine may detect the coolant outlet temperature by the cold water temperature sensor cooling In the operation panel that controls the steam control valve by the load signal, the upper limit of the opening of the steam control valve is determined and controlled in response to the target cooling water set temperature signal from the control panel , so that the heating steam becomes excessive. An energy-saving control operation device for a vapor absorption refrigeration machine, characterized in that it is prevented from flowing and excessive cooling of cold water does not occur.
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