JP2003214685A - Air conditioning system - Google Patents
Air conditioning systemInfo
- Publication number
- JP2003214685A JP2003214685A JP2002011073A JP2002011073A JP2003214685A JP 2003214685 A JP2003214685 A JP 2003214685A JP 2002011073 A JP2002011073 A JP 2002011073A JP 2002011073 A JP2002011073 A JP 2002011073A JP 2003214685 A JP2003214685 A JP 2003214685A
- Authority
- JP
- Japan
- Prior art keywords
- air conditioning
- temperature
- air
- measuring means
- room
- 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
Classifications
-
- 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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術の分野】本発明は、例えば、ビルや
病院などの建家内の冷暖房を行う空調システムに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for heating and cooling a building such as a building or a hospital.
【０００２】[0002]
【従来の技術】一般に、ビルの空調システムにおける部
屋温度の制御方式には、部屋の温度を測定してこれが目
標値になるように、熱源機が製造する冷水または温水の
流量を制御する定風量制御方式（ＣＡＶ方式）と、冷水
または温水の水量は一定で風量を変える可変風量制御方
式（ＶＡＶ方式）とがある。また、両者を組み合わせた
ハイブリッド方式もある。2. Description of the Related Art Generally, a room temperature control method in a building air-conditioning system measures a room temperature and controls a flow rate of cold water or hot water produced by a heat source device so that the room temperature reaches a target value. There are a control system (CAV system) and a variable air volume control system (VAV system) in which the volume of cold or hot water is constant and the volume of air is changed. There is also a hybrid system that combines both.
【０００３】定風量制御方式では、冷水(温水)の流量を
制御するために水循環系にポンプとバルブとを設け、ポ
ンプは一定回転数で水を送り出す一方、バルブで所望の
流量に調節する。この定風量制御方法ではポンプ動力が
中問負荷のときに無駄になるので、近年ではバルブでは
なくインバータ制御ポンプにより流量制御が行われる場
合が増えてきた。In the constant air flow rate control system, a pump and a valve are provided in the water circulation system to control the flow rate of cold water (warm water), and the pump sends water at a constant rotation speed while the valve regulates the flow rate to a desired value. In this constant air flow rate control method, the pump power is wasted when the load is medium, so that in recent years, the flow rate control has been performed by the inverter control pump instead of the valve.
【０００４】一方、可変流量制御方式では空調ファンが
一定回転数で空気を循環させ、その空気流量をダンパー
で調節するものである。この空気の流量調節により室温
を目標値に制御する。この場合も省エネルギーの観点か
らダンパーではなくインバータ制御ファンにて空気流量
を制御することが近年行われるようになっている。On the other hand, in the variable flow rate control system, the air conditioning fan circulates air at a constant rotation speed and adjusts the air flow rate with a damper. The room temperature is controlled to a target value by adjusting the flow rate of the air. In this case as well, from the viewpoint of energy saving, controlling the air flow rate by an inverter control fan instead of a damper has recently been performed.
【０００５】このように、従来の空調システムの制御で
は、部屋温度のフィードバックによりバルブやダンパー
を制御し、または、インバータ制御ポンプやインバータ
制御ファンを制御することにより、部屋温度を所定の値
に制御している。As described above, in the conventional control of the air conditioning system, the room temperature is controlled to a predetermined value by controlling the valves and dampers by feedback of the room temperature or by controlling the inverter control pump and the inverter control fan. is doing.
【０００６】一方、冷却塔は熱源機の発生する熱を大気
中に放散するための装置であるが、従来は一定温度の冷
却水を製造するように制御されている。空調用では一般
的に約３２℃程度である。On the other hand, the cooling tower is a device for dissipating the heat generated by the heat source unit into the atmosphere, but conventionally it is controlled so as to produce cooling water at a constant temperature. For air conditioning, it is generally about 32 ° C.
【０００７】[0007]
【発明が解決しようとする課題】ところが、従来の空調
システムでは、水流量または空気流量のみを操作して室
温を制御しているので、必ずしも最もエネルギー消費が
少ない状態で運用されるとは限らない。However, in the conventional air conditioning system, since the room temperature is controlled by operating only the water flow rate or the air flow rate, it is not always operated in the state of the least energy consumption. .
【０００８】冷水戻り温度と冷凍機成績係数（ＣＯＰ）
との間、ファンやポンプに関し、その流量と所要動力と
の間には密接な相関関係がある。冷水戻り温度は一般的
には高いほうが冷凍機成績係数（ＣＯＰ）は高くなる。
また、ファンやポンプの所要動力は良く知られているよ
うに流量の３乗に比例する。特に、インバータ制御ファ
ンとインバータ制御ポンプとを備えた空調システムで
は、水流量と空気流量とをどのようにも調節可能である
が、室温のみにより制御しているので、必ずしも最もエ
ネルギー消費が少ない点で運用されるとは限らなかっ
た。Chilled water return temperature and chiller coefficient of performance (COP)
There is a close correlation between the flow rate of the fan and the pump and the required power. In general, the higher the cold water return temperature, the higher the refrigerator coefficient of performance (COP).
Further, the required power of the fan and pump is proportional to the cube of the flow rate, as is well known. In particular, in an air conditioning system equipped with an inverter control fan and an inverter control pump, the water flow rate and the air flow rate can be adjusted in any way, but since it is controlled only by room temperature, the energy consumption is not necessarily the lowest. It was not always operated in.
【０００９】いま、図３に示すような空調システムを考
える。熱源機である冷凍機１の温度をＴｒ、その基準温
度をＴｒ０、ポンプ２による冷却流量をＦＷ、その基準
流量をＦＷ０、ポンプ２の動力をＰｐｕｍｐ、その基準
動力をＰｐｕｍｐ０、空調コイル３の温度をＴｃ、その
基準温度をＴｃ０、ファン４による空調風量をＦａ、そ
の基準風量をＦａ０、ファン４の動力をＰｆａｎ、その
基準動力をＰｆａｎ０室内５の室内温度をＴａ、その基
準温度をＴａ０とする。Now, consider an air conditioning system as shown in FIG. The temperature of the refrigerator 1 as a heat source device is Tr, the reference temperature thereof is Tr 0 , the cooling flow rate by the pump 2 is F W , the reference flow rate thereof is F W0 , the power of the pump 2 is P pump , and the reference power thereof is P pump0 , The temperature of the air conditioning coil 3 is Tc, its reference temperature is Tc 0 , the air conditioning air volume by the fan 4 is Fa, its reference air volume is Fa 0 , the power of the fan 4 is P fan , and its reference power is the room temperature of the P fan0 room 5. Ta and its reference temperature are Ta 0 .
【００１０】ポンプ２の動力Ｐｐｕｍｐの関係式は
（１）式に示され、ファン４の動力Ｐｆ ａｎの関係式は
（２）式で示される。また、ポンプ２の動力とファン４
の動力との合計ｆ（Ｔｃ）を（３）式に示す。[0010] relation of power P pump pumps 2 is shown in (1), equation of power P f an, the fan 4 is represented by equation (2). Also, the power of the pump 2 and the fan 4
The total f (Tc) with the power of is shown in the equation (3).
【００１１】[0011]
【数１】
（１）式に示されるように、ポンプ２の動力Ｐｐｕｍｐ
は流量ＦＷの３乗に比例し、また必要流量は負荷が変わ
らなければ温度差に反比例する。同様に、ファン４の動
力Ｐｆａｎも、（２）式に示すように流量Ｆａの３乗に
比例し、また必要流量は負荷が変わらなければ温度差に
反比例する。[Equation 1] As shown in the equation (1), the power P pump of the pump 2
Is proportional to the cube of the flow rate F W , and the required flow rate is inversely proportional to the temperature difference unless the load changes. Similarly, the power P fan of the fan 4 is also proportional to the cube of the flow rate Fa as shown in equation (2), and the required flow rate is inversely proportional to the temperature difference unless the load changes.
【００１２】図４は、（３）式のポンプ２の動力とファ
ン４の動力との合計ｆ（Ｔｃ）を空調コイル温度Ｔｃに
ついてプロットした特性図である。図４に示すように、
総動力ｆ（Ｔｃ）は空調コイル温度Ｔｃにより大きく変
化する。FIG. 4 is a characteristic diagram in which the total f (Tc) of the power of the pump 2 and the power of the fan 4 of the formula (3) is plotted with respect to the air conditioning coil temperature Tc. As shown in FIG.
The total power f (Tc) changes greatly depending on the air conditioning coil temperature Tc.
【００１３】しかるに、従来の空調システムでは部屋温
度のみによりポンプ２またはファン４の制御を行ってい
るので、ポンプ２の動力およびファン４の動力の両者の
最小化は考慮されておらず、例えば、運用点１にて運用
されていた。However, in the conventional air conditioning system, since the pump 2 or the fan 4 is controlled only by the room temperature, the minimization of both the power of the pump 2 and the power of the fan 4 is not taken into consideration. It was operated at operating point 1.
【００１４】一方、冷却塔の製造する冷却水に関して
も、冷却水温度が低いほど冷凍機１の成績係数（ＣＯ
Ｐ）は改善しその消費動力は低減するが、冷却水温度を
低くするためには冷却塔ファンの消費動力が増大すると
いう特性を有する。On the other hand, regarding the cooling water produced by the cooling tower, the coefficient of performance of the refrigerator 1 (CO
Although P) is improved and its power consumption is reduced, it has the characteristic that the power consumption of the cooling tower fan is increased in order to lower the cooling water temperature.
【００１５】図５は、熱源機（冷凍機）がガス炊きボイ
ラによる蒸気吸収式冷凍機である場合の冷却水温度に対
する冷却塔ファンの消費動力（電力消費量）およびガス
消費量の関係を示す特性図である。図５から明らかなよ
うに、冷却水温度によりガスおよび電気の総合動力コス
トは変化する。特に、時間帯により電気料金は大きく変
化するので、従来の一定冷却水温度制御では動力コスト
が最小化されないという問題があった。FIG. 5 shows the relationship between the power consumption (electric power consumption) of the cooling tower fan and the gas consumption amount with respect to the cooling water temperature when the heat source device (refrigerator) is a vapor absorption refrigerator with a gas cooking boiler. It is a characteristic diagram. As is clear from FIG. 5, the total power cost of gas and electricity changes depending on the cooling water temperature. In particular, since the electricity rate changes greatly depending on the time of day, there is a problem that the conventional constant cooling water temperature control does not minimize the power cost.
【００１６】本発明の目的は、最適な省エネルギー化を
図った空調運転を行うことができる空調システムを提供
することである。An object of the present invention is to provide an air conditioning system capable of performing an air conditioning operation with an optimum energy saving.
【００１７】[0017]
【課題を解決するための手段】請求項１の発明に係る空
調システムは、冷水または温水を生産する熱源機と、熱
源機で生産された冷水または温水の熱を空気に熱交換す
る空調コイルと、熱源機と空調コイルとの間の水循環を
受け持つインバータ制御ポンプと、部屋と空調コイルと
の間の空気循環を担当するインバータ制御ファンと、部
屋の温度を測定する室温測定手段と、空調コイルの温度
を測定する空調コイル温度測定手段と、部屋温度があら
かじめ定めた設定温度になるようにインバータ制御ファ
ンを制御すると共に空調コイル温度があらかじめ定めた
設定温度になるようにインバータ制御ポンプを制御する
コントローラとを備えたことを特徴とする。An air conditioning system according to a first aspect of the present invention comprises a heat source device for producing cold water or hot water, and an air conditioning coil for exchanging heat of cold water or hot water produced by the heat source device with air. , An inverter control pump responsible for water circulation between the heat source unit and the air conditioning coil, an inverter control fan responsible for air circulation between the room and the air conditioning coil, a room temperature measuring means for measuring the temperature of the room, and an air conditioning coil Air-conditioning coil temperature measuring means for measuring the temperature, and a controller for controlling the inverter control fan so that the room temperature becomes a predetermined set temperature and for controlling the inverter control pump so that the air-conditioning coil temperature becomes the predetermined set temperature. It is characterized by having and.
【００１８】請求項１の発明に係る空調システムにおい
ては、熱源機で生産された冷水または温水の熱を空調コ
イルで空気に熱交換し、その空気を部屋に供給する。コ
ントローラは、室温測定手段で測定した部屋温度があら
かじめ定めた設定温度になるようにインバータ制御ファ
ンを制御すると共に、空調コイル温度測定手段で計測し
た空調コイル温度があらかじめ定めた設定温度になるよ
うにインバータ制御ポンプを制御する。これにより、イ
ンバータ制御ポンプとインバータ制御ファンとの総合動
力が最小化になるように制御する。In the air conditioning system according to the first aspect of the present invention, the heat of the cold water or the hot water produced by the heat source machine is exchanged with the air by the air conditioning coil, and the air is supplied to the room. The controller controls the inverter control fan so that the room temperature measured by the room temperature measuring means reaches a predetermined set temperature, and also controls the air conditioning coil temperature measured by the air conditioning coil temperature measuring means to the predetermined set temperature. Controls the inverter-controlled pump. Thus, the total power of the inverter control pump and the inverter control fan is controlled to be minimized.
【００１９】請求項２の発明に係る空調システムは、請
求項１の発明において、空調コイル温度測定手段に代え
て、戻り温度測定手段により冷水または温水の熱源機へ
の戻り温度を測定し、コントローラは、戻り温度測定手
段で測定された熱源機への冷水または温水の戻り温度に
基づいてインバータ制御ポンプを制御することを特徴と
する。According to a second aspect of the present invention, in the air conditioning system according to the first aspect of the present invention, instead of the air conditioning coil temperature measuring means, the return temperature measuring means measures the return temperature of the cold water or the hot water to the heat source machine, and the controller. Is characterized in that the inverter control pump is controlled based on the return temperature of the cold water or the hot water to the heat source device measured by the return temperature measuring means.
【００２０】請求項２の発明に係る空調システムにおい
ては、請求項１の発明の作用に加え、コントローラは、
戻り温度測定手段で測定された熱源機への冷水または温
水の戻り温度に基づいてインバータ制御ポンプを制御す
る。これにより、空調コイル温度測定手段を新たに設け
る必要がなく、インバータ制御ポンプとインバータ制御
ファンとの総合動力が最小化になるように制御できる。In the air conditioning system according to the invention of claim 2, in addition to the operation of the invention of claim 1, the controller is
The inverter control pump is controlled based on the return temperature of the cold water or the hot water to the heat source device measured by the return temperature measuring means. As a result, it is not necessary to additionally provide an air conditioning coil temperature measuring means, and control can be performed so that the total power of the inverter control pump and the inverter control fan is minimized.
【００２１】請求項３の発明に係る空調システムは、請
求項１の発明において、空調コイル温度測定手段に代え
て、空気の部屋への噴出温度を測定する部屋噴出温度測
定手段を設け、コントローラは、部屋噴出温度測定手段
で測定された空気の部屋への噴出温度に基づいてインバ
ータ制御ポンプを制御することを特徴とする。An air conditioning system according to a third aspect of the present invention is the air conditioning system according to the first aspect of the invention, in which, instead of the air conditioning coil temperature measuring means, room ejection temperature measuring means for measuring the ejection temperature of air into the room is provided, and the controller is It is characterized in that the inverter control pump is controlled based on the temperature at which the air blown into the room is measured by the room blowout temperature measuring means.
【００２２】請求項３の発明に係る空調システムにおい
ては、請求項１の発明の作用に加え、コントローラは、
部屋噴出温度測定手段で測定された空気の部屋への噴出
温度に基づいてインバータ制御ポンプを制御する。この
場合、コントローラは空気噴出温度と空調コイル温度と
の差について補正して制御する。これにより、インバー
タ制御ポンプとインバータ制御ファンとの総合動力が最
小化になるように制御できる。In the air conditioning system according to the invention of claim 3, in addition to the operation of the invention of claim 1, the controller is
The inverter control pump is controlled based on the temperature of the air blown into the room measured by the room blowout temperature measuring means. In this case, the controller corrects and controls the difference between the air ejection temperature and the air conditioning coil temperature. Thereby, the total power of the inverter control pump and the inverter control fan can be controlled to be minimized.
【００２３】請求項４の発明に係る空調システムは、請
求項１の発明において、コントローラは、インバータ制
御ファンとインバータ制御ポンプとの合計動力が最小に
なるように空調コイル温度の設定値を最適化計算により
求めることを特徴とする。The air conditioning system according to a fourth aspect of the present invention is the air conditioning system according to the first aspect, wherein the controller optimizes the set value of the air conditioning coil temperature so that the total power of the inverter control fan and the inverter control pump is minimized. It is characterized by being calculated.
【００２４】請求項４の発明に係る空調システムにおい
ては、請求項１の発明の作用に加え、コントローラは、
インバータ制御ファンとインバータ制御ポンプとの合計
動力が最小になるように空調コイル温度の設定値を最適
化計算により求め、その設定値になるように制御する。
従って、インバータ制御ポンプとインバータ制御ファン
との総合動力を最小化でき、省エネルギー化を図れる。In the air conditioning system according to the invention of claim 4, in addition to the operation of the invention of claim 1, the controller is
The setting value of the air conditioning coil temperature is obtained by optimization calculation so that the total power of the inverter control fan and the inverter control pump is minimized, and control is performed so as to reach the setting value.
Therefore, the total power of the inverter control pump and the inverter control fan can be minimized, and energy can be saved.
【００２５】請求項５の発明に係る空調システムは、請
求項１の発明において、熱源機は冷却塔を備えたガス式
吸収式冷凍機であり、コントローラは、電気料金または
あらかじめ設定されたタイムスケジュールに応じて、冷
却塔の冷却水温度の設定値を変更することを特徴とす
る。According to a fifth aspect of the present invention, in the air-conditioning system according to the first aspect, the heat source unit is a gas absorption refrigerator having a cooling tower, and the controller is an electricity charge or a preset time schedule. The setting value of the cooling water temperature of the cooling tower is changed according to the above.
【００２６】請求項５の発明に係る空調システムにおい
ては、請求項１の発明の作用に加え、コントローラは、
電気料金またはあらかじめ設定されたタイムスケジュー
ルに応じて、ガス式吸収式冷凍機の冷却塔の冷却水温度
の設定値を変更する。これにより、効率的にガス式吸収
式冷凍機を運転できる。In the air conditioning system according to the invention of claim 5, in addition to the operation of the invention of claim 1, the controller is
The set value of the cooling water temperature of the cooling tower of the gas absorption refrigerator is changed according to the electricity rate or a preset time schedule. As a result, the gas absorption refrigerator can be efficiently operated.
【００２７】[0027]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は本発明の実施の形態に係わる空調システム
の構成図である。熱源機である冷凍機１は冷水を発生
し、ポンプ２により冷水流量が調整されて空調コイル３
に供給される。ポンプ２はインバータ６ａで駆動制御さ
れるインバータ制御ポンプである。このインバータ６ａ
はコントローラ７により制御される。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram of an air conditioning system according to an embodiment of the present invention. The refrigerator 1 which is a heat source device generates cold water, and the flow rate of the cold water is adjusted by the pump 2 so that the air conditioning coil 3
Is supplied to. The pump 2 is an inverter control pump whose drive is controlled by the inverter 6a. This inverter 6a
Are controlled by the controller 7.
【００２８】空調コイル３は冷凍機１からの冷水を空気
と熱交換する。空調コイル３で熱交換された空気は、フ
ァン４により風量が制御されて室内５に供給される。フ
ァン４はインバータ６ｂで駆動制御されるインバータ制
御ファンである。このインバータ６ｂはコントローラ７
により制御される。The air conditioning coil 3 exchanges heat with the cold water from the refrigerator 1. The air that has undergone heat exchange in the air conditioning coil 3 is supplied to the room 5 with its air volume controlled by the fan 4. The fan 4 is an inverter control fan whose drive is controlled by the inverter 6b. This inverter 6b is a controller 7
Controlled by.
【００２９】また、室内５の部屋温度Ｔａを測定する室
温測定手段８が設けられ、この室温測定手段８で測定さ
れた部屋温度Ｔａはコントローラ７に入力される。さら
に、空調コイル３の空調コイル温度Ｔｃを測定する空調
コイル温度測定手段９が設けられ、この空調コイル温度
測定手段９で測定された空調コイル温度Ｔｃもコントロ
ーラ７に入力される。コントローラ７は、部屋温度Ｔａ
があらかじめ定めた設定温度になるようにインバータ６
ｂを介してインバータ制御ファン４を制御すると共に、
空調コイル温度Ｔｃがあらかじめ定めた設定温度になる
ようにインバータ６ａを介してインバータ制御ポンプ２
を制御する。A room temperature measuring means 8 for measuring the room temperature Ta of the room 5 is provided, and the room temperature Ta measured by the room temperature measuring means 8 is input to the controller 7. Further, an air conditioning coil temperature measuring means 9 for measuring the air conditioning coil temperature Tc of the air conditioning coil 3 is provided, and the air conditioning coil temperature Tc measured by the air conditioning coil temperature measuring means 9 is also input to the controller 7. The controller 7 controls the room temperature Ta.
So that the temperature reaches a preset temperature
While controlling the inverter control fan 4 via b,
The inverter control pump 2 is provided via the inverter 6a so that the air conditioning coil temperature Tc becomes a preset temperature.
To control.
【００３０】すなわち、コントローラ７は、部屋温度Ｔ
ａと空調コイル温度Ｔｃとを入力信号とし、ポンプ２と
ファン４とをインバータ６ａ、６ｂにより制御する。コ
ントローラ７のアルゴリズムは、ＰＩＤ制御器が２個備
わったものであり、１つは部屋温度Ｔａの設定値からの
偏差が零になるようにファン動力を制御し、他方は空調
コイル温度Ｔｃが所定値になるようにポンプ動力を制御
する。空調コイル温度Ｔｃの設定値は、総合動力が最小
になるように以下の（４）式により求める。That is, the controller 7 controls the room temperature T
The pump 2 and the fan 4 are controlled by the inverters 6a and 6b by using a and the air conditioning coil temperature Tc as input signals. The algorithm of the controller 7 is provided with two PID controllers, one controls fan power so that the deviation from the set value of the room temperature Ta becomes zero, and the other controls the air conditioning coil temperature Tc to a predetermined value. Control the pump power to the value. The set value of the air conditioning coil temperature Tc is obtained by the following equation (4) so that the total power is minimized.
【００３１】[0031]
【数２】
一般に、空調コイル３は一つのビルに多数あり、その各
々について（４）式にて温度設定値を決定することにな
る。このように、空調コイル３の温度Ｔｃを測定する空
調コイル温度測定手段９を設け、部屋温度Ｔａと共に、
ポンプ２とファン４の流量制御により各々の温度が目標
値になるように調節する。この場合、空調コイル３の温
度設定値は、ポンプ２とファン４の総合動力を最小化
（図４における運転点２）するように決定する。[Equation 2] Generally, there are many air-conditioning coils 3 in one building, and the temperature setting value is determined for each of them by the equation (4). In this way, the air conditioning coil temperature measuring means 9 for measuring the temperature Tc of the air conditioning coil 3 is provided, and together with the room temperature Ta,
By controlling the flow rates of the pump 2 and the fan 4, the respective temperatures are adjusted to the target values. In this case, the temperature setting value of the air conditioning coil 3 is determined so as to minimize the total power of the pump 2 and the fan 4 (operating point 2 in FIG. 4).
【００３２】ここで、空調コイル温度測定手段９に代え
て、冷水または温水の熱源機への戻り温度を測定する戻
り温度測定手段を設け、インバータ制御ポンプ戻り温度
測定手段で測定された冷凍機１への冷水または温水の戻
り温度に基づいてインバータ制御ポンプ２を制御するこ
とも可能である。冷凍機１の戻り水温とした場合には、
元々戻り水温を検出する戻り温度測定手段は冷却水の温
度制御のために設けられているので、新たに空調コイル
温度測定手段９を設ける必要がなく、最適な省エネルギ
ー化を図った空調が可能となる。Here, instead of the air conditioning coil temperature measuring means 9, a return temperature measuring means for measuring the return temperature of the cold water or the hot water to the heat source machine is provided, and the refrigerator 1 measured by the inverter control pump return temperature measuring means. It is also possible to control the inverter control pump 2 on the basis of the return temperature of cold water or hot water. When the return water temperature of the refrigerator 1 is used,
Since the return temperature measuring means for originally detecting the return water temperature is provided for controlling the temperature of the cooling water, it is not necessary to newly provide the air conditioning coil temperature measuring means 9, and it is possible to perform the air conditioning with the optimum energy saving. Become.
【００３３】また、空調コイル温度測定手段９に代え
て、空気の部屋への噴出温度を測定する部屋噴出温度測
定手段を設け、部屋噴出温度測定手段で測定された空気
の部屋への噴出温度に基づいてインバータ制御ポンプ２
を制御することも可能である。この場合には、空気噴出
温度と空調コイル温度Ｔｃとの差についてあらかじめ補
正しておくことになる。Further, instead of the air-conditioning coil temperature measuring means 9, a room ejection temperature measuring means for measuring the ejection temperature of air into the room is provided, and the ejection temperature of air into the room measured by the room ejection temperature measuring means is set. Based on inverter control pump 2
It is also possible to control In this case, the difference between the air ejection temperature and the air conditioning coil temperature Tc is corrected in advance.
【００３４】一方、部屋温度Ｔａと空調コイル温度Ｔｃ
とを同時にファン４とポンプ２とを使って制御する多入
出力アルゴリズムをコントローラ７に採用することもで
きる。この場合の多入出力アルゴリズムの代表例として
はモデル予測制御アルゴリズムがある。On the other hand, the room temperature Ta and the air conditioning coil temperature Tc
It is also possible to adopt a multi-input / output algorithm for controlling the controller 7 using the fan 4 and the pump 2 at the same time as the controller 7. A model predictive control algorithm is a typical example of the multiple input / output algorithm in this case.
【００３５】図２は、熱源機として電動機ファンを持つ
冷却塔を備えたガス式吸収式冷凍機を有する空調システ
ムでの冷却水温度のタイムスケジュールの一例の特性図
である。図２では、夏の冷却水温度のタイムスケジュー
ルを設定した場合を示している。夏場は相対的にガスの
値段が安く、昼間の重負荷時の電気代が高いので、図２
に示すように、昼間の重負荷時にガスを多く使用する設
定が最適設定となる。一方、冬場は、相対的にガスの値
段が高いことと容易に冷却水温度が下げられることか
ら、対応した低い冷却水温度にするのが最適なタイムス
ケジュールとなる。FIG. 2 is a characteristic diagram of an example of a time schedule of cooling water temperature in an air conditioning system having a gas absorption refrigerator having a cooling tower having an electric motor fan as a heat source device. FIG. 2 shows a case where a time schedule of the cooling water temperature in summer is set. Since the price of gas is relatively low in the summer and the electricity bill during heavy load during the day is high,
As shown in, the optimal setting is the setting that uses a large amount of gas during heavy load in the daytime. On the other hand, in winter, since the cost of gas is relatively high and the cooling water temperature can be easily lowered, it is an optimal time schedule to set a correspondingly low cooling water temperature.
【００３６】このように、電気料金またはガス料金を考
慮してあらかじめタイムスケジュールを設定する。例え
ば、冷水温度の設定温度が、与えられた電気料金に対し
て冷却塔動力と冷凍機動力または供給蒸気エネルギー、
または供給ガス熱量の和を最小化するように決める。そ
して、コントローラ７は、設定されたタイムスケジュー
ルに応じて、冷却塔の冷却水温度の設定値を変更して制
御する。As described above, the time schedule is set in advance in consideration of the electricity charge or the gas charge. For example, the set temperature of the chilled water temperature is, for a given electricity rate, cooling tower power and refrigerator power or supply steam energy,
Alternatively, it is decided to minimize the sum of heat quantity of the supply gas. Then, the controller 7 changes and controls the set value of the cooling water temperature of the cooling tower according to the set time schedule.
【００３７】このように、電気料金の時間変化に応じ
て、冷却塔の電動ファン動力費用と冷凍機１の所要動力
費用との和が最小になるように冷却水温度を制御する。As described above, the cooling water temperature is controlled so that the sum of the electric fan power cost of the cooling tower and the required power cost of the refrigerator 1 is minimized according to the time change of the electricity rate.
【００３８】[0038]
【発明の効果】以上述べたように、本発明によれば、空
調コイルの温度制御により、最適な省エネルギー化を図
った空調運転が可能となる。また、冷却水温度と所要電
力および所要ガスを考慮に入れた時間帯による冷却水の
最適なタイムスケジューリングにより、コストが最もか
からないように最適運転を行うことができるので、大幅
なコスト低減を図ることができる。As described above, according to the present invention, the temperature control of the air conditioning coil enables the air conditioning operation with the optimum energy saving. In addition, by optimally scheduling the cooling water according to the time zone that takes into consideration the cooling water temperature, the required electric power, and the required gas, it is possible to perform the optimal operation so that the cost will not be the most, so it is possible to significantly reduce the cost. You can
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施の形態に係わる空調システムの構
成図。FIG. 1 is a configuration diagram of an air conditioning system according to an embodiment of the present invention.
【図２】本発明の実施の形態における熱源機として電動
機ファンを持つ冷却塔を備えたガス式吸収式冷凍機を有
する空調システムでの冷却水温度のタイムスケジュール
の一例の特性図。FIG. 2 is a characteristic diagram of an example of a time schedule of cooling water temperature in an air conditioning system having a gas absorption refrigerator having a cooling tower having an electric motor fan as a heat source device in the embodiment of the present invention.
【図３】従来の空調システムの構成図。FIG. 3 is a configuration diagram of a conventional air conditioning system.
【図４】空調システムにおけるポンプ動力とファン動力
との合計を空調コイル温度についてプロットした特性
図。FIG. 4 is a characteristic diagram in which a total of pump power and fan power in an air conditioning system is plotted with respect to an air conditioning coil temperature.
【図５】空調システムの冷凍機がガス炊きボイラによる
蒸気吸収式冷凍機である場合の冷却水温度に対する冷却
塔ファンの消費動力（電力消費量）およびガス消費量の
関係を示す特性図。FIG. 5 is a characteristic diagram showing a relationship between power consumption (electric power consumption) and gas consumption of the cooling tower fan with respect to cooling water temperature when the refrigerator of the air conditioning system is a vapor absorption refrigerator using a gas cooking boiler.
１…冷凍機、２…ポンプ、３…空調コイル、４…ファ
ン、５…室内、６…インバータ、７…コントローラ、８
…室温測定手段、９…空調コイル温度測定手段1 ... Refrigerator, 2 ... Pump, 3 ... Air conditioning coil, 4 ... Fan, 5 ... Indoor, 6 ... Inverter, 7 ... Controller, 8
... Room temperature measuring means, 9 ... Air conditioning coil temperature measuring means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 船津 徹也 東京都府中市東芝町１番地 株式会社東芝 府中事業所内 (72)発明者 岩渕 一徳 東京都府中市東芝町１番地 株式会社東芝 府中事業所内 (72)発明者 中田 裕二 東京都港区芝浦一丁目１番１号 株式会社 東芝本社事務所内 (72)発明者 内藤 君永 神奈川県川崎市幸区堀川町66番地２ 東芝 アイティー・ソリューション株式会社内 Ｆターム(参考） 3L060 AA03 CC01 CC02 CC05 DD02 DD05 EE32 EE34 3L061 BE02 BF02 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Tetsuya Funazu No. 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Office (72) Inventor Kazunori Iwabuchi No. 1 Toshiba-cho, Fuchu-shi, Tokyo Toshiba Corporation Fuchu Office (72) Inventor Yuji Nakata 1-1 Shibaura, Minato-ku, Tokyo Co., Ltd. Toshiba headquarters office (72) Inventor Kiminaga 2 Horikawa-cho 66, Saiwai-ku, Kawasaki City, Kanagawa Prefecture Toshiba IT Solution Co., Ltd. F-term (reference) 3L060 AA03 CC01 CC02 CC05 DD02 DD05 EE32 EE34 3L061 BE02 BF02
Claims (5)
源機で生産された冷水または温水の熱を空気に熱交換す
る空調コイルと、熱源機と空調コイルとの間の水循環を
受け持つインバータ制御ポンプと、部屋と空調コイルと
の間の空気循環を担当するインバータ制御ファンと、部
屋の温度を測定する室温測定手段と、空調コイルの温度
を測定する空調コイル温度測定手段と、部屋温度があら
かじめ定めた設定温度になるようにインバータ制御ファ
ンを制御すると共に空調コイル温度があらかじめ定めた
設定温度になるようにインバータ制御ポンプを制御する
コントローラとを備えたことを特徴とする空調システ
ム。1. A heat source device for producing cold water or hot water, an air conditioning coil for exchanging heat of the cold water or hot water produced by the heat source device with air, and an inverter control for water circulation between the heat source device and the air conditioning coil. The pump, the inverter control fan in charge of air circulation between the room and the air conditioning coil, the room temperature measuring means for measuring the temperature of the room, the air conditioning coil temperature measuring means for measuring the temperature of the air conditioning coil, and the room temperature An air conditioning system comprising: a controller that controls an inverter control fan so that a predetermined set temperature is obtained, and a controller that controls an inverter control pump so that an air conditioning coil temperature becomes a predetermined set temperature.
温度測定手段により冷水または温水の熱源機への戻り温
度を測定し、コントローラは、戻り温度測定手段で測定
された熱源機への冷水または温水の戻り温度に基づいて
インバータ制御ポンプを制御することを特徴とする請求
項１記載の空調システム。2. Instead of the air-conditioning coil temperature measuring means, the return temperature measuring means measures the return temperature of the cold water or the hot water to the heat source machine, and the controller cools the cold water or the hot water to the heat source machine measured by the return temperature measuring means. The air conditioning system according to claim 1, wherein the inverter control pump is controlled based on the return temperature of the hot water.
の部屋への噴出温度を測定する部屋噴出温度測定手段を
設け、コントローラは、部屋噴出温度測定手段で測定さ
れた空気の部屋への噴出温度に基づいてインバータ制御
ポンプを制御することを特徴とする請求項１記載の空調
システム。3. A room ejection temperature measuring means for measuring the ejection temperature of air into the room is provided in place of the air conditioning coil temperature measuring means, and the controller ejects the air measured by the room ejection temperature measuring means into the room. The air conditioning system according to claim 1, wherein the inverter control pump is controlled based on the temperature.
とインバータ制御ポンプとの合計動力が最小になるよう
に空調コイル温度の設定値を最適化計算により求めるこ
とを特徴とする請求項１に記載の空調システム。4. The air conditioning system according to claim 1, wherein the controller obtains the set value of the air conditioning coil temperature by optimization calculation so that the total power of the inverter control fan and the inverter control pump is minimized. .
凍機であり、コントローラは、電気料金またはあらかじ
め設定されたタイムスケジュールに応じて、冷却塔の冷
却水温度の設定値を変更することを特徴とする請求項１
に記載の空調システム。5. The heat source machine is a gas absorption refrigerator having a cooling tower, and the controller changes the set value of the cooling water temperature of the cooling tower according to the electricity rate or a preset time schedule. Claim 1 characterized by the above.
Air conditioning system described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002011073A JP4112868B2 (en) | 2002-01-21 | 2002-01-21 | Air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002011073A JP4112868B2 (en) | 2002-01-21 | 2002-01-21 | Air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003214685A true JP2003214685A (en) | 2003-07-30 |
| JP4112868B2 JP4112868B2 (en) | 2008-07-02 |
Family
ID=27648635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002011073A Expired - Lifetime JP4112868B2 (en) | 2002-01-21 | 2002-01-21 | Air conditioning system |
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| Country | Link |
|---|---|
| JP (1) | JP4112868B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275400A (en) * | 2005-03-29 | 2006-10-12 | Toyo Netsu Kogyo Kk | Air conditioning unit |
| JP2009264599A (en) * | 2008-04-22 | 2009-11-12 | Ntt Facilities Inc | Rack air conditioning system, method for operating the same, and rack type air conditioner |
| CN102418965A (en) * | 2011-09-16 | 2012-04-18 | 浙江大学 | Multifunctional frequency conversion central air-conditioning experimental platform |
| CN105509411A (en) * | 2016-01-29 | 2016-04-20 | 合肥美的电冰箱有限公司 | Refrigerator control method system and refrigerator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7010341B1 (en) | 2020-07-29 | 2022-01-26 | フジテック株式会社 | Elevator, control panel, elevator control method |
-
2002
- 2002-01-21 JP JP2002011073A patent/JP4112868B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275400A (en) * | 2005-03-29 | 2006-10-12 | Toyo Netsu Kogyo Kk | Air conditioning unit |
| JP2009264599A (en) * | 2008-04-22 | 2009-11-12 | Ntt Facilities Inc | Rack air conditioning system, method for operating the same, and rack type air conditioner |
| CN102418965A (en) * | 2011-09-16 | 2012-04-18 | 浙江大学 | Multifunctional frequency conversion central air-conditioning experimental platform |
| CN105509411A (en) * | 2016-01-29 | 2016-04-20 | 合肥美的电冰箱有限公司 | Refrigerator control method system and refrigerator |
| CN105509411B (en) * | 2016-01-29 | 2018-02-13 | 合肥美的电冰箱有限公司 | A kind of controlling method for refrigerator system and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4112868B2 (en) | 2008-07-02 |
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