JP2009198088A - Air-conditioning control system, program for air-conditioning control, and air-conditioning control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operational efficiency of the entire air-conditioning system, and to encourage reduction of energy consumption in the air-conditioning system. <P>SOLUTION: This air-conditioning control system controls operating conditions of a plurality of air-conditioning devices in the air-conditioning system including the plurality of air-conditioning devices for conditioning the air in prescribed rooms. A prescribed processing order is set to the plurality of air-conditioning devices according to the flow of air-conditioning load processing in the air-conditioning system, and a range of the operational condition of a low-order air-conditioning device positioned on a downstream side is extracted from the predetermined pre-operating condition relating to the low-order air-conditioning device so that the operating condition of the high-order air-conditioning device positioned at an upstream side among the plurality of air-conditioning devices in the prescribed processing order is achieved. Then the operating condition to minimize energy consumption of the low-order air-conditioning device is specified from the extracted range of operational condition as the operating condition of the low-order air-conditioning device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning control system, an air conditioning control program, and an air conditioning control method for controlling an air conditioning device included in an air conditioning system that performs indoor air conditioning.

  A wide variety of facilities such as heat pumps and turbo chillers are used as air conditioning systems in factories and buildings. And from the viewpoint of preservation of the global environment in recent years, the air conditioning system is controlled in consideration of energy saving and reduction of operation costs. For example, by calculating the power consumption and cost of the entire equipment used for air conditioning based on the mutual relationship between various devices such as heat source equipment, load side equipment, transport equipment, etc. constituting the air conditioning system of the building, A technique for minimizing this has been disclosed (for example, see Patent Document 1).

Moreover, the technique of patent document 2 is disclosed as a technique regarding control of the air conditioning system aiming at reduction of the power consumption of the whole air conditioning system. In this technology, the operation of each device is performed so that the energy consumption of the entire air conditioning system is minimized by taking into account the resistance coefficient related to the piping of the air conditioner, cold / heat generator, and heat release / heat sink that make up the air conditioning system. Conditions are determined.
JP 2002-364901 A Japanese Patent No. 3783859 Japanese Patent Laid-Open No. 2003-120982 JP 2006-266520 A

  In controlling an air conditioning system that considers environmental aspects such as reducing the energy consumption of the air conditioning system and running costs, etc., if the trend of energy used is predicted and the air conditioning system is to be controlled based on that prediction, There is a difference between the forecast and the actual energy consumed, which makes it necessary to perform unexpected control as an air conditioning system, which in turn increases running costs and provides a comfortable air conditioning environment for the user May become difficult.

  In addition, when operating conditions that minimize the energy consumption of individual air conditioners that make up the air conditioning system are found and the energy consumption of the entire air conditioning system is minimized, the air conditioners are physically connected in the air conditioning system. Are connected by piping, etc., and each operation may affect other equipment. For example, it is known to those skilled in the art that a refrigerator greatly depends on a cooling water inlet temperature and a cooling water outlet temperature. Therefore, the operating efficiency of the refrigerator is that of a cooling tower that exhausts the condensation heat of the refrigerator. to be influenced. In the conventional air-conditioning system control technology, the correlation between these air-conditioning equipment is not taken into consideration, so even if the optimum operating conditions of each air-conditioning equipment are This may not necessarily be the optimum condition for the entire facility.

  In view of the above problems, an object of the present invention is to provide an air conditioning system control technique that further improves the operating efficiency of the entire air conditioning system and promotes the reduction of energy consumption in the air conditioning system.

In the present invention, in order to solve the above-described problems, the flow of air conditioning load processing performed in a plurality of air conditioning devices constituting the air conditioning system is sufficiently considered. In other words, by considering the correlation between devices based on the load processing for air conditioning performed by each air conditioning device, the entire air conditioning system is controlled so that the air conditioning system as a whole can be operated more efficiently. As a result, reduction of energy consumption in the air conditioning system is promoted.

  Therefore, first, the present invention is grasped from the viewpoint of an air conditioning control system that controls an operating state of each of a plurality of air conditioning devices with respect to an air conditioning system including a plurality of air conditioning devices for performing air conditioning in a predetermined room. The air conditioning control system includes: a processing order setting unit that sets a predetermined processing order for the plurality of air conditioning devices according to a flow of air conditioning load processing in the air conditioning system; and the predetermined processing order set by the processing order setting unit And an operation control unit that controls a part or all of the operation states of the plurality of air conditioners. Then, the operation control unit sets the target operation state of the higher-order air conditioner located on the upper side among the plurality of air-conditioning apparatuses in the predetermined processing order or the target in the predetermined room. Operation for extracting the range of operable conditions of the lower-order air conditioner located on the lower side in the predetermined processing order from the pre-operated conditions determined in advance for the lower-order air conditioner so that the air-conditioning state is achieved From among the operable condition ranges extracted by the range extraction unit and the operation range extraction unit, an operation condition in which the energy consumption amount of the lower-order air conditioner is in a predetermined minimum state is specified as the predetermined operation condition of the lower-order air conditioner An operation condition output unit that instructs an operation condition of the lower-order air conditioner according to the predetermined operation condition specified by the operation condition specification unit, A.

  An air conditioning control system according to the present invention controls an operating state of an air conditioning system of an air conditioning system including a plurality of air conditioning equipments. In the control, the air conditioning equipment set by the processing order setting unit is controlled. The operation control unit controls each air conditioner according to a predetermined processing order. That is, in the air conditioning control system, operation control of the air conditioning equipment is performed in accordance with the flow of air conditioning load processing of the air conditioning system. Here, the flow of the air conditioning load processing of the air conditioning system refers to air conditioning performed by a plurality of air conditioners sequentially or in parallel in an air conditioning system configured to realize an air conditioning state provided in a predetermined room. This is a flow of processing when the predetermined room is set as the upper side. In other words, the lower side of the flow of the air conditioning load process is the terminal side of the air conditioning process that goes back from the predetermined room for the purpose of air conditioning (for example, the terminal side of the flow of the heat medium for the air conditioning process). Therefore, the air conditioning control system according to the present invention controls air conditioning equipment that follows the flow of the air conditioning load processing, and the air conditioning equipment is a component of the air conditioning system and is subject to control by the air conditioning control system. Is. Here, as an example of the positional relationship of the air conditioning equipment, a general cooling water pump is located upstream from a general cooling tower by following the flow of the heat medium from a predetermined space that is the target of air conditioning. In this case, the cooling water pump is positioned higher than the cooling tower.

  And the operation control of the air-conditioning equipment according to the flow of this air-conditioning load process is further performed by the operation range extraction unit, the operation condition specifying unit, and the operation condition output unit. The operation range extraction unit takes into account the correlation in the air conditioning processing between the upper air conditioning equipment and the lower air conditioning equipment arranged along the flow of the air conditioning load processing and the correlation with the predetermined room, in other words, the lower air conditioning equipment In consideration of the effect on the upper air conditioner or the predetermined room, the operating condition (operable condition) for operating the lower air conditioner is extracted. That is, according to the operation range extraction unit, the lower-order air conditioner in a positional relationship (positional relationship in the flow of the air-conditioning load process) that can affect the operation state of the predetermined room or the higher-order air conditioner is achieved. A range of operable conditions is extracted. The upper air conditioner and the lower air conditioner referred to here indicate the relative relationship between the two air conditioners in the flow of air conditioning load processing. Accordingly, one air conditioner can take the position of the upper air conditioner and the position of the lower air conditioner.

Here, the operation range extraction unit performs the extraction from the pre-operation conditions when extracting the operable condition range. This pre-operation condition is an operation condition set in advance for each of the air conditioners. When the air conditioner is a lower air conditioner, it affects the operation state of the upper air conditioner located on the upper side. This is the operating condition including the parameters to be affected. Thereby, the operation range extraction part can extract the range of the operable condition in consideration of the correlation between the air conditioning devices in consideration of the flow of the air conditioning load processing.

  Then, the operating condition specifying unit specifies the operating condition of the lower air conditioner corresponding to the range from the viewpoint of energy consumption from the operable condition range extracted by the operating range extracting unit. In this specification, the energy consumption of the lower-order air conditioner is determined from the viewpoint of the energy consumption that sets the energy consumption of the lower-order air conditioner to a predetermined minimum state. The predetermined minimum state referred to here is preferably the smallest energy consumption of the lower-order air conditioner. However, it also includes a state in which a certain amount of energy consumption can be reduced in consideration of the operating environment of the lower-order air conditioning equipment. Therefore, the operation condition specifying unit selects a plurality of conditions from the operable condition range extracted by the operation range extraction unit based on the viewpoint of energy consumption, and finally determines based on the selected condition. The predetermined operating condition may be specified.

  Then, the operation condition output unit instructs the operation condition to the lower air conditioner according to the predetermined operation condition specified by the operation condition specifying unit, thereby realizing the operation state of the upper air conditioner and In the low-order air conditioner, the energy consumption amount can be set to a predetermined minimum state. The control by the operation control unit up to the above is performed for some or all of the plurality of air conditioners of the air conditioning system, and when looking at the entire air conditioner system, the operation state of each air conditioner to be controlled is The desired state is achieved and the energy consumption of the entire air conditioning system is kept low, so that efficient operation is achieved.

  Here, in the air conditioning control system, the air conditioner set at the highest level in the predetermined processing order set by the processing order setting unit is an air conditioner according to a set room temperature instruction relating to a room temperature to be set in the predetermined room. The operation control unit performs the operation state of the air conditioner according to the predetermined processing order starting from the secondary terminal device from the secondary terminal device side. You may make it control sequentially toward an air-conditioning apparatus. In other words, the secondary terminal device that provides air conditioned into a predetermined room is the highest air conditioner, and the air conditioner is controlled by controlling the operating state of each air conditioner that constitutes the air conditioning system according to the flow of the air conditioning load process. It is possible to efficiently operate the entire air conditioning system while taking into account the correlation between the devices. Here, the set room temperature instruction may be a room temperature instruction set by a user such as a resident in a predetermined room or an operation manager of the air conditioning system, or a room temperature instruction set in advance in the air conditioning system. There may be. Moreover, as an example of the secondary side terminal device, an air conditioner that performs air conditioning in a predetermined room, a variable air volume device that adjusts the flow rate of conditioned air from the air conditioner, and the like can be given.

  In the air conditioning control system, the operation state control of the air conditioner by the operation control unit is an intermediate position excluding the highest and lowest air conditioners in the predetermined process order set by the process order setting unit. It may be possible to start with the air conditioning equipment as a starting point. That is, since the operation control unit can control from any intermediate position in the flow of air conditioning load processing, the air conditioning control system can cope with various operations of air conditioning equipment in the air conditioning system.

Here, in the air conditioning control system described above, the operation range extraction unit is configured such that the partial load factor of the lower air conditioner is equal to or higher than a predetermined load factor at which a target operation state required for the upper air conditioner is achieved. The range of the operable condition formed by one or a plurality of operation parameters of the lower air conditioner may be extracted from the preliminary operation conditions. That is, the partial load factor required in the lower air conditioner in order to achieve the target operating state in the upper air conditioner is defined as the operating condition where the lower air conditioner can exhibit the operation condition. Is extracted by the operating range extraction unit. By extracting the range of the operable condition in this way, it is possible to specify the predetermined operating condition in the lower air conditioner in a state where the operation state in the upper air conditioner is secured. For example, equipment is selected to be operated at 100% load at the time of designing the air conditioning system, but the air conditioning equipment is rarely operated at the rated capacity when it is outside the peak time such as midday in midsummer. Conventionally, the air conditioner control system according to the present invention sets the partial load factor of the lower air conditioner to the target required for the upper air conditioner, while the operation is performed with the output reduced for each air conditioner. Since the operation is performed together, it is possible to cover the air conditioning load within a necessary range while realizing the comfort of the predetermined space.

  In the air conditioning control system described above, the operating condition specifying unit sets the operating condition that minimizes the energy consumption amount of the lower-order air conditioning equipment in the range of the operable condition extracted by the operating range extracting unit. It may be specified as a condition, or an average of a plurality of operating conditions that minimizes the energy consumption of the lower air conditioner among the operating conditions included in the range of the operable condition may be specified as the predetermined condition. Thereby, the energy consumption in each of the air-conditioning equipment constituting the air-conditioning system can be minimized, and as a result, the energy consumption in the entire air-conditioning system can be kept low.

  Here, regarding the correlation between the upper air conditioner and the lower air conditioner in the flow of air conditioning load processing in the air conditioning control system up to the above, a plurality of upper air conditioners may be arranged for one lower air conditioner. . That is, in the air conditioning control system, the processing order setting unit may include the upper air conditioning equipment related to the one lower air conditioning equipment for one lower air conditioning equipment in a part or all of the predetermined processing order. A plurality of units are set, and the operation range extraction unit sets the range of the operable condition of the one lower air conditioner corresponding to each of the plurality of upper air conditioners as the pre-operation condition of the one lower air conditioner. The operation condition specifying unit may extract each from the inside, and the operation condition specifying unit may specify one operation condition as the predetermined operation condition from among all the operation possible condition ranges extracted by the operation range extracting unit. That is, in the flow of air conditioning load processing, when the correlation between air conditioning devices is not a serial relationship but a parallel relationship (that is, a plurality of upper air conditioning devices are arranged in parallel with respect to one lower air conditioning device). The air conditioning control system according to the present invention is also applicable. In other words, the air conditioning control system according to the present invention is a system that can be applied to a plurality of air conditioning devices associated by air conditioning load processing.

  In such an air conditioning control system, in each operable condition range extracted by the operating range extraction unit, one operable condition range and another operable condition range are part or all of them. In the case of overlapping, the operation condition specifying unit specifies, as the predetermined operation condition, an operation condition in which the energy consumption amount of the lower-order air conditioner is minimized among the operation conditions in the overlapped operable condition range, or You may make it specify the average of several operating conditions from which the energy consumption of this low-order air conditioning apparatus becomes the minimum among the operating conditions contained in the range of a driving | operation possible condition as said predetermined condition. By doing in this way, the energy consumption in the low-order air conditioning apparatus set as a low-order side can be restrained low in the state where the driving | running state in the some high-order air conditioning equipment set as a high-order side was ensured. .

  Further, in the air conditioning control system, in each of the operable condition ranges extracted by the operating range extracting unit, when the one operable condition range and another operable condition range do not overlap, the operating condition specifying unit May specify the predetermined operating condition based on an operating condition that minimizes the energy consumption amount of the lower-order air conditioner in each operable condition range. By doing in this way, the operation state in the plurality of upper air conditioners set as the upper side is secured, and the energy consumption in the lower air conditioner set as the lower side is made as low as possible. Can be suppressed.

  In the air conditioning control system described above, the operation control unit controls the operating state of each air conditioner from the upper air conditioner toward the lower air conditioner. You may make it the process regarding the driving | running state of each air conditioner performed toward the air conditioner of the side. That is, in the air conditioning control system described above, in the predetermined processing order set by the processing order setting unit, based on the operating state of one air conditioner for which the operating condition is commanded by the operating condition output unit, You may make it further provide the driving | running state estimation part which estimates the driving | running state of the air conditioning apparatus located in the upper rank side of an air conditioning apparatus. In other words, by using the flow of the air conditioning load process in the air conditioning system and taking into account the influence of the operating state of the lower air conditioner on the upper air conditioner, the estimation process by the operating state estimating unit can be performed. As a result, it is possible to allow the facility manager to simulate how many degrees Celsius the room temperature will be if the chilled water outlet temperature of the refrigerator is changed by 1 ° C., for example, and can be used for confirmation before execution. It can also be used for guidance before driving and for educating unskilled drivers.

  Here, the technical idea of the air conditioning control system according to the present invention described above can also be applied to a program that causes a computer that controls the air conditioning equipment constituting the air conditioning system to execute a predetermined operation. The technical idea can also be applied to a method for controlling an air conditioner constituting the air conditioning system.

  It is possible to further improve the operation efficiency of the entire air conditioning system and promote the reduction of energy consumption in the air conditioning system.

  Here, an embodiment of an air conditioning control system according to the present invention will be described based on the drawings.

  FIG. 1 shows an air conditioning control system 50 according to the present invention, which is an integrated control system that controls the operating states of various air conditioning devices that constitute the air conditioning system 1. The air conditioner control system 50 and the air conditioner system 1 are connected by an instrumentation signal such as communication to control the operation state of each air conditioner. In addition, a central monitoring device 90 is also connected to these systems by instrumentation signals such as communication, so that the user can efficiently monitor the state of the control and the like. In this invention, although the said user is not limited to a specific person, as an example, the room occupant air-conditioned by the air-conditioning system 1, the operation manager of the said air-conditioning system, the maintenance person of a building, etc. Is included. In the following, these are simply referred to as “users”.

  Here, the air-conditioning equipment constituting the air-conditioning system 1 is a control equipment required for air-conditioning the indoor space for living, work, etc., and roughly divides the air-conditioning directly into the room. A so-called secondary air conditioner and a so-called heat source device that supplies a heat medium to the secondary air conditioner are included. These secondary-side air conditioning equipment and heat source equipment provide a comfortable air-conditioning environment for users by performing load processing for air conditioning along a series of flows. It will be described later. Examples of heat source equipment include turbo chillers, cooling towers, heat pumps, ice heat storage units, boilers, primary pumps, and related valves, and secondary air conditioning equipment includes air handling units, fan coil units, floor blowing. Examples include fan units, secondary pumps, ventilation devices such as total heat exchangers, and valves and dampers related to them. Furthermore, the air conditioner is a valve constituting the air conditioning system 1 (secondary equipment is installed on the secondary side, primary equipment is installed on the primary side) or damper (installed only on the secondary side). Etc. may be included. Here, the header side is the primary side, and the pipe extending from the header to the load side (indoor side) to the indoor side terminal device is the secondary side.

  Here, in FIG. 1, each air-conditioning device that is a control target of the air-conditioning control system 50 is displayed as a control unit surrounded by a dotted frame. And this air-conditioning control system 50 does not control each air-conditioning equipment which is these control units individually, but the correlation via the air-conditioning load process which exists between each air-conditioning equipment (in FIG. The correlation is schematically shown by arrows, in particular, the solid line for the “secondary air conditioner” on the right is connected to the air as the heat medium, and the solid line for the “secondary air conditioner” is the heat medium. In this way, each air conditioner is linked and controlled. In particular, as described above, there is heat energy transfer between the heat source device and the secondary side air conditioner via the heat medium for air conditioning load processing, and between the heat source devices and between the secondary side air conditioners. Since the same heat energy transfer exists, the air conditioning control system 50 fully considers the correlation between these air conditioning devices, links the air conditioning devices, and consequently the air conditioning system 1. Control the whole efficiently.

  By controlling the air conditioning control system 50, the energy consumption of the entire air conditioning system 1 can be suppressed as much as possible, and an efficient air conditioning environment can be provided. Moreover, even if the air conditioning system 1 itself is an existing facility, by applying the air conditioning control system 50 according to the present invention thereto, the air conditioning capacity of the air conditioning system can be sufficiently drawn and the operation efficiency of the entire system can be improved. It becomes possible. Therefore, details of the air conditioning control system 50 will be described below.

  FIG. 2 shows an air conditioning system 1 including an air conditioner 10, which is an air conditioner, a variable water volume pump (secondary pump) 20, a turbo chiller 30, and a cooling tower 40, for air conditioning the room 5. It is a figure which shows schematic structure of the air-conditioning control system 50 integrated in order to control the air conditioning system 1 whole. The air conditioning system 1 will be described along the flow of air conditioning load processing for the room 5. When the indoor 5 side is the upper side of the flow of air conditioning load processing, the air conditioner located at the top is the air conditioner (air handling unit having a coil through which water passes) 10. The air conditioner 10 supplies air conditioned in the room 5 via the supply duct 14 so that the deviation between the set room temperature according to the room temperature request from the user and the room temperature sensor 6 that detects the state value of the room 5 is eliminated. To do. Next, the air conditioning device located on the lower side of the air conditioner 10 in the flow of the air conditioning load process is the variable amount pump 20. The variable water pump 20 is a pump capable of variably supplying a heat medium necessary for air conditioning processing of the air conditioner 10. Note that the supply of the heat medium is performed via a supply pipe 24 formed as a circulation path.

  Further, the air conditioner located on the lower side of the variable amount pump 20 in the flow of the air conditioning load process is the turbo refrigerator 30. The turbo refrigerator 30 has a function of adjusting the temperature of the heat medium by exchanging heat with the heat medium flowing through the supply pipe 24. That is, the heat consumed in the air-conditioning space is reproduced and supplied via the heat medium. The heat medium used on the condenser side of the turbo chiller 30 is supplied through a supply pipe 44 formed as a circulation path, and flows into the cooling tower 40 described later. Finally, the cooling tower 40 is the air conditioning device located on the lower side of the turbo chiller 30 in the flow of the air conditioning load processing and located at the lowest level of the flow. The cooling tower 40 has a function of adjusting the temperature of the heat medium flowing through the supply pipe 44 by heat exchange with the outside air. That is, heat is applied to the air conditioner in order to favorably operate the air conditioner that generates heat to be supplied to the air conditioning purpose space.

As described above, the air conditioning system 1 shown in FIG. 2 is configured by providing the air conditioner 10, the variable amount pump 20, the turbo chiller 30, and the cooling tower 40 in order from the upper side in the flow of air conditioning load processing. As a result, an air conditioning environment of the room 5 is formed. Each air conditioner is provided with a controller (DDC) for driving the air conditioner, and this controller is controlled by a central processing unit (CPU) 140 provided on the air conditioning control system 50 side. Specifically, the air conditioner 10 is provided with a controller 11 for the air conditioner 10. The controller 11 is connected to the room temperature sensor 6 and further detects an air volume sensor (FE) 12 for detecting an air volume (supply air volume) of the supply air flowing through the supply duct 14 and a temperature (supply temperature) of the supply air. The temperature sensor (TED) 13 is also connected. Then, the controller 11 drives and controls the air conditioner 10 in accordance with signals from these and control instructions from the CPU 140.

  Next, the variable amount pump 20 is provided with a controller 21 for the variable amount pump 20. The controller 21 includes a pressure sensor (PE) 22 that detects the pressure (water supply pressure) of water, which is a heat medium flowing through the supply pipe 24, and a water amount sensor (FE) 23 that detects the flow rate (water supply water amount) of the heat medium. Connected. And according to the signal from these and the control instruction | indication from CPU140, the controller 21 carries out drive control of the variable_volume | distance_rate pump 20. The turbo refrigerator 30 is provided with a controller 31 for the turbo refrigerator 30. The controller 31 includes a temperature sensor (TEW) 32 that detects the temperature (cold water outlet temperature) of the heat medium sent from the turbo chiller 30 to the supply pipe 24, and the heat medium sent to the turbo chiller 30 from the supply pipe 44. Is connected to a temperature sensor (TEW) 33 for detecting the temperature of the water (cooling water inlet temperature: inlet temperature as viewed from the refrigerator 30). The controller 31 drives and controls the inverter and vanes of the turbo chiller 30 in accordance with signals from these and control instructions from the CPU 140. Finally, the cooling tower 40 is provided with a controller 41 for the cooling tower 40. The controller 41 includes a temperature sensor (TEW) 42 that detects the temperature of the heat medium sent to the cooling tower 40 from the supply pipe 44 (cooling water temperature: the temperature of the inlet to the cooling tower), and the surroundings of the cooling tower 40. It is connected to an outside air wet bulb temperature sensor (WB) 43 that detects the outside air wet bulb temperature of the outside air. Then, the controller 41 drives and controls the fans of the cooling tower 40 in accordance with signals from these and control instructions from the CPU 140.

  In the air conditioning system 1 and the air conditioning control system 50 configured as described above, each air conditioning device is controlled by the CPU 140. Therefore, FIG. 3 illustrates each function in the control performed by the CPU 140 as an image of a function unit. The functions of the functional units imaged in FIG. 3 are exhibited mainly by executing a predetermined control program in the CPU 140. Below, it demonstrates centering on the correlation of each function part.

  The air conditioning control system 50 illustrated in FIG. 3 includes a processing order setting unit 51, an operation control unit 52, an operation state estimation unit 53, and an information reception unit 54. Furthermore, as a functional unit forming the operation control unit 52, an operation range extraction unit 52A, an operation condition specifying unit 52B, and an operation condition output unit 52C are included. The processing order setting unit 51 is a functional unit that recognizes the flow of the air conditioning load processing described above and sets it for controlling each air conditioning device. The operation control unit 52 is a functional unit that controls each air conditioning device based on the flow of the air conditioning load processing set by the processing order setting unit 51. The control by the operation control unit 52 is specifically performed by the operation range extraction unit 52A, the operation condition specifying unit 52B, and the operation condition output unit 52C. The operation state estimation unit 53 is a functional unit for estimating the operation state of the air conditioning equipment using the flow of the air conditioning load process set by the processing order setting unit 51. The information receiving unit 54 receives various information signals sent from the air conditioning system 1 and passes them to the operation control unit 52. Details of the functions exhibited by these functional units will be described later.

Here, the CPU 140 stores a table corresponding to each air conditioner and showing the correlation between the operation conditions of the device and the energy consumption in the device, and a conceptual diagram of the table is shown in FIG. FIG. 4A is a table of energy consumption of the air conditioner 10. Using the air supply air volume detected by the air flow sensor 12 and the air supply temperature detected by the temperature sensor 13 as operating condition parameters, the power and heat of the air supply fan in the air conditioner 10 (the inlet / outlet temperature difference and the flow rate of the air conditioner 10). Are calculated for each cell (values a and b are illustrated in the figure). FIG. 4B is a table of the energy consumption amount of the variable amount pump 20. With the water supply pressure detected by the pressure sensor 22 and the water supply amount detected by the water amount sensor 23 as parameters of the operating conditions, the power value of the variable amount pump 20 is input for each cell (in the figure, the value) c)). FIG. 4C is a table relating to the energy consumption of the turbo chiller 30. The cooling water outlet temperature detected by the temperature sensor 32 and the cooling water temperature detected by the temperature sensor 33 are defined as the operating condition parameters by the input rate of the centrifugal chiller 30 (operating power / rated power at a predetermined output). .) Is input for each cell (in the figure, the value d is exemplified). The power that is the energy consumption amount of the turbo chiller 30 is calculated by multiplying the rated power by the partial load factor and the input rate. FIG. 4D is a table of energy consumption of the cooling tower 40. The cooling water temperature detected by the temperature sensor 42 and the outdoor air wet bulb temperature sensor 43 detected by the outdoor air wet bulb temperature sensor 43 are used as operating condition parameters. (The value e is illustrated in the figure). Note that the number of air conditioners is not limited to one in the same system. For example, a plurality of air conditioners may be provided in the same system. Regarding the numerical values in the above table in such a case, when the parameter to be adopted is “amount” such as energy consumption, the total value for a plurality of vehicles is expressed as “ratio” such as partial load factor. In some cases, an average value over a plurality of units may be used.

  Further, these tables shown in FIG. 4 are used to specify the operating conditions of each control device while taking into account the correlation between the upper air conditioner and the lower air conditioner. That is, these tables reflect the positional relationship in which each air conditioning device in the air conditioning system 1 is arranged. Specific identification of the operating conditions of each air conditioner using these tables will be described in detail with reference to FIGS. 7 and 8 to be described later. By the way, the data relating to the energy consumption amount of each air conditioner shown in FIG. 4 is also used for the processing by the above-described operation control unit 52, particularly the operation range extraction unit 52A and the operation condition specifying unit 52B. Therefore, a method for creating data relating to these energy consumption amounts will be described with reference to FIGS. Here, FIG. 5 is a diagram showing a table structure of energy consumption of the air conditioner, and FIG. 6 is a flowchart showing a procedure for determining data values stored in the table.

  Here, the energy consumption table of each air conditioner indicates that the upper air conditioner of the air conditioner is the target operating state to be achieved or the target air condition to be achieved in the room 5 (hereinafter referred to as “upper air conditioner”). It shows the energy consumption required for the air conditioner in order to cover the operating condition required for the air conditioner for realizing the “target state of the device” or simply “target state”). . And the energy consumption of the air conditioner which should be stored in a table changes with target conditions, such as a high-order air conditioner, and the operating condition of the said air conditioner. Therefore, the energy consumption amount table of each air conditioner is set for each target state of the upper air conditioner or the like using the operation condition of the air conditioner as a parameter.

Here, as described above, the parameters of the two operating conditions (for example, in the case of the air conditioner 10, the supply air amount and the supply air temperature) are set in the energy consumption table of each air conditioner. Therefore, in this embodiment, the energy consumption amount of each air conditioner is calculated according to the following formula.
Energy consumption E (i, j) L = A (i) × B (j) × Rated capacity × Partial load factor L × Efficiency L (Equation 1)
Here, the integers i and j correspond to the rows and columns of the energy consumption table. A (i) is a rated capacity correction coefficient determined by one operating condition value C1 (i), i = 1 to m, and B (j) is one operating condition value C2 (j). , j = 1 to n, the rated capacity correction factor. The rated capacity is an ability determined by the specifications of each air conditioner. The partial load factor L is the ratio of the actual output to the rated capacity of each air conditioner, and is set in increments of 0.1 in the range of L = 0.1 to 1.0. The efficiency L is the ratio of the energy consumption to the output of each air conditioner and is a value that varies depending on the partial load factor L.

Then, according to the flow shown in FIG. 6, the energy consumption of the lower air conditioner is calculated for each target state of the upper air conditioner or the like using the two operating conditions of the lower air conditioner as parameters. Specifically, in S101, the range C1 (i), i = 1 to m of one operating condition 1 is set. Next, in S102, the range C2 (j), j = 1 to n of the other operating condition 2 is set. Further, in S103, the above-described rated capacity, efficiency, and two correction factors A (i) and B (j) are set, and in S104, the air conditioner higher than the air conditioner for which energy consumption is set. The target value P at (which is a numerical value of the target state) is set. Then, by the processes of S104 to S107 and S110 to S115, the operation conditions 1 and 2 are used as parameters, and the target value P is repeatedly calculated for each partial load factor at each of the operation condition values C1 (i) and C2 (j). Done.

  In the middle of the repeated calculation, in S108, it is determined whether or not the target value P can be achieved with the partial load factor L. If a negative determination is made here, the partial load factor L is increased by 0.1, and the determination in S108 is performed again. If an affirmative determination is made, the energy consumption E (i, j) L is calculated according to the above equation 1 (S109). When calculation has been completed for all target values P in the upper control device (when affirmed in S116), it is assumed that calculation of energy consumption has been completed, and calculation for all target values P has been completed. When there is not (when negative determination is made in S116), the calculation of energy consumption is continued from the processing of S104.

  The structure of the table constituted by the energy consumption values calculated in this way will be described with reference to FIG. The table shown in FIG. 5 shows the energy consumption at a certain target value P as a set of matrix forms, assigns values C1 (i) of operating conditions 1 to the rows of the matrix, and sets C2 (j) of operating conditions 2 Assign to a column. In the i row and j column of the table, the energy consumption E (i, j) under the operating conditions C1 and C2 calculated according to the previous flow is input for 10 partial load factors L = 0.1 to 1.0. A table is created in a matrix format for all target values P1, P2, P3, etc. Each table shown in FIG. 4 is a matrix format table corresponding to one target value P.

  Next, control of each air conditioner of the air conditioning system 1 by the CPU 140 in the air conditioning control system 50 will be described with reference to FIGS. 7 and 8. FIG. 7 is a flow of control by the air conditioning control system 50 performed by the CPU 140. The control is realized by each functional unit shown in FIG. 3, and FIG. 8 shows each air conditioning when the control flow shown in FIG. 7 is performed. It is a figure which shows the condition of the process of the energy consumption table corresponding to an apparatus. Moreover, the control shown in FIG. 7 is started when the user starts the air conditioner 10 or the like.

  First, in S201, information acquisition of the room temperature detected by the room temperature sensor 6 by the information receiving unit 54 and the set room temperature according to the room temperature request from the user is performed. After that, in S202, the processing order setting unit 51 sets the processing order of the air conditioning devices constituting the air conditioning system 1 that is the control target of the air conditioning control system 50, that is, the processing order of the air conditioning devices along the flow of the air conditioning load processing. Recognize from the upper side to the lower side and set it as the processing sequence for control. In the present embodiment, as shown in FIG. 2, the “processing order” that sets the order of the air conditioner 10, the variable amount pump 20, the turbo chiller 30, and the cooling tower 40 is set by the processing order setting unit 51. When the process of S202 ends, the process proceeds to S203.

  In S203, control of each air conditioning device by the operation control unit 52 is started. The control by the operation control unit 52 is sequentially performed from the higher-order air conditioner to the lower-order air conditioner in accordance with the process order set by the process order setting unit 51. Next, in S204, the range of operable conditions is extracted by the operating range extracting unit 52A. This range of operable conditions is a range of operating conditions that can be adopted by lower-order air conditioners in order to achieve the target state of the higher-order air conditioners. The parameters set as the operable conditions are determined for each air conditioner as described above.

  Here, since the air conditioner 10 which is the highest-order air conditioner in the above order does not have a higher-order air conditioner, “the room temperature detected by the room temperature sensor 6 and the set room temperature according to the room temperature request from the user” "To eliminate the deviation" is the "target state of the higher-order air conditioning equipment", and this is "transmitted" to the air conditioner 10 to determine the operating conditions to be adopted by the air conditioner 10. become. In this embodiment, in order to achieve the target state of the higher-order air conditioner or the like, the lower-order air conditioner is informed so that the target state is considered in the lower-order air conditioner. ". Specifically, the CPU 140 is connected to each air conditioner and the room temperature sensor 6 by an instrumentation signal such as communication, whereby the target state is transmitted. Therefore, when the process related to the air conditioner 10 is performed in S204, the set room temperature and the air conditioning load that are the target state of the room 5 are transmitted from the room temperature sensor 6 and the like, and the operation of the air conditioner 10 that can achieve this target state The range of possible conditions is extracted by the operating range extraction unit 52A. The schematic diagram is shown in the upper and middle stages of FIG. The upper diagram schematically shows the air conditioning state realized in the room 5 in a matrix form, and the hatched portion is the target state of the room 5, which is realized by the operation of the air conditioner 10. It will be. The middle diagram is a schematic diagram of an energy consumption table for the air conditioner 10. In the drawing, the state of transmission of the target state from the indoor 5 side to the air conditioner 10 side is indicated by an arrow 60. With respect to the extraction of the operable condition, the operating range extraction unit 52A has a partial load factor that can cover the transmitted air conditioning load and the operating condition range of “supply air temperature” and “supply air volume” that can maintain the set room temperature. 61 is extracted as the range of operable conditions. When the process of S204 ends, the process proceeds to S205.

  Next, the processing of S205 to S207 is performed by the operating condition specifying unit 52B. First, in S205, it is determined whether or not there is one operating condition that minimizes the energy consumption of the corresponding air conditioner in the operable condition range extracted in S204. For example, the operating condition specifying unit 52B determines whether or not there is one operating condition that is the minimum value among the energy consumptions stored in the cells in the operable condition range 61 extracted as shown in FIG. judge. Here, if an affirmative determination is made, in S206, the one operating condition is specified as a predetermined operating condition according to the present invention (an operating condition that should be set in order to minimize the energy consumed in the corresponding air conditioner). Is done. In the example shown in FIG. 8, the minimum energy consumption condition 62 in the extraction range 61 is specified as the predetermined condition. If a negative determination is made in S205, a predetermined operating condition is calculated in S207 based on a plurality of operating conditions that minimize energy consumption. For example, when the plurality of operation conditions are adjacent operation conditions (for example, operation conditions corresponding to adjacent cells in the table), the average of the respective operation conditions may be set as the predetermined operation condition. In addition, when the plurality of operation conditions are not close to each other, any one of the plurality of operation conditions may be set as the predetermined condition, and preferably the current air conditioning among the plurality of operation conditions. An operation condition with little fluctuation from the operation state of the device is set as a predetermined condition. When the processes of S206 and S207 are completed, the process proceeds to S208.

  In S208, it is determined whether or not the specification of the predetermined operation condition in the lowest air conditioner has been completed. In the present embodiment, it is determined whether or not the specification of the predetermined operation condition in the cooling tower 40 has been completed. If a negative determination is made here, the processing subsequent to S204 is performed again for the next lower-order air conditioner. If a positive determination is made here, the process proceeds to S209.

  Here, in the present embodiment, following the example of the air conditioner 10, the specification of predetermined operation conditions for the variable amount pump 20, the turbo chiller 30, and the cooling tower 40 will also be mentioned. That is, by the determination in S208, the predetermined operation conditions for the variable amount pump 20, the turbo chiller 30, and the cooling tower 40, which are performed in accordance with the processing order set in S202, are specified as follows.

First, as for the variable amount pump 20, as described above, the coil unit in the air conditioner 10 is configured so that the air conditioner 10 can achieve the operation state under the energy consumption minimum condition 62 which is a predetermined condition of the air conditioner 10. The water flow state of the water flowing through is transmitted to the variable amount pump 20 as a target state on the air conditioner 10 side. And the range of the operable condition of the variable amount water pump 20 which can achieve this target state on the air conditioner 10 side is extracted by the operating range extraction unit 52A. The schematic diagram is shown in the middle and lower parts of FIG. The lower diagram is a schematic diagram of an energy consumption table for the variable amount pump 20. In the drawing, the state of transmission of the target state from the air conditioner 10 side to the variable water amount pump 20 side is indicated by an arrow 60 '. For the extraction of the operable condition of the variable amount pump 20, there is an operable condition range 61 ′ of “water supply flow rate” and “water supply pressure” that can achieve a partial load ratio equal to or higher than the water flow state transmitted as the target state. It is extracted as a range of operable conditions. Further, the above-described operation condition specifying unit 52B specifies a predetermined operation condition 62 ′ from the range 61 ′ of the above-described operable conditions.

  Next, for the centrifugal chiller 30, since the operation state of the variable amount pump 20 under the predetermined operation condition is achieved by the variable amount pump 20, the water supply flow rate and the supply temperature of the variable amount pump 20 are This is transmitted to the turbo chiller 30 side as the target state of the variable amount pump 20. And the range of the operable condition of the turbo chiller 30 that makes it possible to achieve this target state on the variable amount pump 20 side is extracted by the operating range extraction unit 52A. Specifically, for the extraction of the operable condition of the turbo chiller 30, the amount of cooling heat obtained by multiplying the water flow rate transmitted as the target state by a predetermined temperature difference (for example, a 5 degree difference set as a specification value in the design) Operation with "cold water outlet temperature" and "cooling water temperature" that can achieve the water supply temperature with a partial load factor that can meet the requirements (for example, if the heat medium is cold water, the temperature can be lower than the target water supply temperature) A range of possible conditions is extracted as a range of operable conditions. Further, the above-described operation condition specifying unit 52B specifies a predetermined operation condition for the turbo chiller 30 from the range of the operable condition.

  Next, with respect to the cooling tower 40, since the operation state of the turbo chiller 30 under predetermined operating conditions is achieved by the turbo chiller 30, the cooling heat amount, the cooling water temperature, and the outside air humidity from the turbo chiller 30 are achieved. The sphere temperature is transmitted to the cooling tower 40 side as the target state. And the range of the operable condition of the cooling tower 40 that can achieve this target state on the turbo refrigerator 30 side is extracted by the operating range extraction unit 52A. Specifically, for the extraction of the operable condition of the cooling tower 40, at a partial load factor that can cover the transmitted cooling heat amount at the outside air wet bulb temperature above the target value so that the capacity of the cooling tower can be sufficiently secured, In addition, the range of operable conditions of “cooling water temperature” and “outside air wet bulb temperature” that can achieve the cooling water temperature (for example, when the heat medium is cold water, the temperature is equal to or lower than the target cooling water temperature). Is extracted as the range of the operable condition. Furthermore, the above-described operating condition specifying unit 52B specifies a predetermined operating condition for the cooling tower 40 from the range of the operable condition.

  When all the predetermined operating conditions for each air conditioner are specified, in S209, the operation control output unit 52C outputs a command for the specified operating condition specified for each air conditioner. Driving is performed. Thus, in this air conditioning system control process, since the predetermined operating conditions of each air conditioner are specified along the flow of the air conditioning load process, the operating state required by each air conditioner is reliably performed, and the air conditioning system 1 Overall energy consumption can be kept as low as possible.

  In the control flow shown in FIG. 7, control by the air conditioning control system 50 is started with the room temperature sensor 6 that detects the room temperature of the room 5 as a starting point. Instead, air conditioning equipment in the middle of the flow of air conditioning load processing is used. It is good also as a starting point of this control. That is, this air conditioning system control process can be performed starting from the air conditioner so that the operating state of any of the air conditioners becomes a desired state.

<Modification 1>
Here, in the above embodiment, the flow of the air conditioning load processing of the air conditioning equipment configured by the air conditioning system 1 starts from the room temperature sensor 6, the air conditioner 10, the variable amount pump 20, the turbo chiller 30,
The cooling towers 40 are arranged in series. However, the air-conditioning control system 50 according to the present invention can be applied to air-conditioning devices arranged in parallel rather than in series. In this case, as shown in FIG. 9, the operating range extraction unit 52A determines the operating conditions for enabling the operating state to be achieved by the air conditioner at the upper level, and the energy consumption by the lower level air conditioner. Extract each in the table. In FIG. 9, the extraction ranges 61A and 61B are extracted by the operation range extraction unit 52A, and at this time, the respective extraction ranges overlap in the range 61C. Therefore, the operation condition specifying unit 52B specifies the energy consumption minimum condition 62, which is the operation condition range in which the energy consumption is minimum, from the overlapping range 61C as the predetermined operation condition in the lower air conditioner.

  In addition, as shown in FIG. 10, when the operable condition ranges extracted by the operation range extracting unit 52A do not overlap, the operation condition that minimizes the energy consumption in each of the extraction ranges 61A and 61B is specified. Further, the one with the lower energy consumption is finally specified as the predetermined operating condition. When the operation conditions specified in the extraction ranges 61A and 61B are close to each other (for example, operation conditions corresponding to adjacent cells in the table), the average of the respective operation conditions is specified as the predetermined operation condition. May be.

  9 and 10 includes, for example, a top-level air conditioner (air conditioner in the case of FIG. 2) such as a room temperature sensor 6 provided in the room 5 shown in FIG. It is also possible to apply a device that issues an instruction to 10). That is, even when a plurality of room temperature sensors 6 are associated with one air conditioner 10, as described above, the air conditioning control system 50 according to the present invention can be applied.

<Modification 2>
In the embodiments described above, the air conditioning system control process shown in FIG. 7 using the table shown in FIG. 4 was performed using the room temperature sensor 6 as the starting point of the flow of the air conditioning load process. As a modification thereof, a reception device that accepts a set room temperature from the user may be used instead of the room temperature sensor 6 at the start point of the air conditioning load processing flow. The controller 11 of the air conditioner 10 is connected to the accepting device, and the air conditioner 10 sends air conditioned in the room 5 via a supply pipe in accordance with an instruction regarding a set temperature received from the user. Supply.

  The air conditioning system control process shown in FIG. 7 is started when the user starts the air conditioner 10 by the accepting device 6. In this case, in the air conditioning system control process, the information receiving unit 54 acquires information on the set room temperature received from the user via the receiving device. The set room temperature acquired in this way and the air conditioning load required for the realization thereof are “transmitted” to the air conditioner 10 as “target state of the host air conditioning control device”, and each of the air conditioning devices described above. The operating conditions are identified. Therefore, the energy consumption of the entire air conditioning system 1 can be suppressed as low as possible by the control.

<Modification 3>
In the above-described embodiments, the predetermined operating conditions of each air conditioner are determined so that the flow of the air conditioning load processing in the air conditioning system proceeds from the upper side to the lower side. You may perform the process regarding an air conditioner so that it may progress to a high-order side. That is, since the flow reflects the correlation between the air conditioners, a new process using the flow is proposed. For example, it is possible to estimate the operating state of the air conditioner located on the upper side when the operating condition of the air conditioner located on the lower side is changed from the relevance of the energy consumption table described above. This estimation process is executed by the operation state estimation unit 53. As a result, it is possible to allow the facility manager to simulate how many degrees Celsius the room temperature will be if the chilled water outlet temperature of the refrigerator is changed by 1 ° C., for example, and can be used for confirmation before execution. It can also be used for guidance before driving and for educating unskilled drivers.

It is a figure which shows the correlation structure of the air conditioning control system and air conditioning system which concern on the Example of this invention. It is a figure showing composition of an air-conditioning system to which an air-conditioning control system concerning an example of the present invention is applied. It is the figure which imaged each function part of the air-conditioning control system which concerns on the Example of this invention. It is a figure which shows schematic structure of the energy consumption table set for each air-conditioning apparatus in the air-conditioning control system which concerns on the Example of this invention. It is a figure which shows the detailed structure of the energy consumption table shown by FIG. It is a flowchart which shows the procedure for producing the energy consumption table shown by FIG. It is a flowchart for control of the driving | running state of each air conditioner performed by the air conditioning control system which concerns on the Example of this invention. It is a figure which shows roughly the extraction of the range of a driving | operation possible condition at the time of the control shown in FIG. 7, and the specific mode of a predetermined driving | running condition. It is the 1st figure which shows roughly the extraction of the range of operable conditions at the time of control of the air-conditioning equipment performed by the air-conditioning control system concerning other examples of the present invention, and the specific situation of predetermined operating conditions. . It is the 2nd figure which shows roughly the extraction of the range of a driving | operation possible condition in the case of control of the air-conditioning apparatus performed by the air-conditioning control system which concerns on the other Example of this invention, and the specific mode of a predetermined operating condition. .

Explanation of symbols

1 ... Air conditioning system 10 ... Air conditioner 140 ... Central processing unit (CPU)
20 .... Variable water pump 30 ... Turbo refrigerator 40 ... Cooling tower 50 ... Air conditioning control system

Claims (13)

For an air conditioning system including a plurality of air conditioning devices for performing air conditioning in a predetermined room, an air conditioning control system that controls the operating state of each of the plurality of air conditioning devices,
In accordance with the flow of air conditioning load processing in the air conditioning system, a processing order setting unit that sets a predetermined processing order for the plurality of air conditioning devices;
An operation control unit that controls a part or all of the operation states of the plurality of air conditioners according to the predetermined processing order set by the processing order setting unit,
The operation controller is
The target operating state of the higher-order air conditioner located on the upper side among the plurality of air conditioners in the predetermined processing order is achieved, or the target air-conditioning state in the predetermined room is achieved An operation range extracting unit that extracts a range of operable conditions of the lower-order air conditioner located on the lower side in the predetermined processing order from the preset pre-operation conditions for the lower-order air conditioner;
An operation condition specifying unit that specifies, as a predetermined operation condition of the lower-order air conditioner, an operation condition in which the energy consumption amount of the lower-order air conditioner is in a predetermined minimum state from the operable condition range extracted by the operation range extraction unit When,
In accordance with the predetermined operation condition specified by the operation condition specifying unit, an operation condition output unit that instructs an operation condition of the lower-order air conditioner,
Air conditioning control system. The air conditioner set at the highest level in the predetermined processing order set by the processing order setting unit is a secondary terminal device that performs air conditioning in accordance with a set room temperature instruction related to the room temperature to be set in the predetermined room. And
The operation control unit sequentially controls the operation state of the air conditioner according to the predetermined processing order starting from the secondary terminal device toward the lowest air conditioner from the secondary terminal device side.
The air conditioning control system according to claim 1. The operation state control of the air conditioner by the operation control unit starts from an intermediate air conditioner excluding the highest and lowest air conditioners in the predetermined process order set by the process order setting unit. Is possible,
The air conditioning control system according to claim 1. The operation range extracting unit is configured to perform one or more operations of the lower air conditioner so that a partial load factor of the lower air conditioner is equal to or higher than a predetermined load factor at which a target operation state required for the upper air conditioner is achieved. A range of the operable conditions formed by parameters is extracted from the preliminary operating conditions;
The air-conditioning control system according to any one of claims 1 to 3. The operating condition specifying unit specifies, as the predetermined condition, an operating condition that minimizes the energy consumption amount of the lower-order air conditioner in the range of the operable condition extracted by the operating range extracting unit, or the operable condition The average of a plurality of operating conditions that minimize the energy consumption of the lower air conditioning equipment among the operating conditions included in the range is specified as the predetermined condition.
The air conditioning control system according to any one of claims 1 to 4. The processing order setting unit sets a plurality of the upper air conditioning devices related to the one lower air conditioning device for one lower air conditioning device in a part or all of the predetermined processing order,
The operation range extraction unit extracts the range of operable conditions of the one lower air conditioner corresponding to each of the plurality of upper air conditioners from the pre-operation conditions of the one lower air conditioner,
The operation condition specifying unit specifies one operation condition as the predetermined operation condition from the range of all the operation possible conditions extracted by the operation range extraction unit,
The air conditioning control system according to any one of claims 1 to 5. In each of the operable condition ranges extracted by the operating range extracting unit, when one operable condition range and another operable condition range overlap partly or entirely, the operating condition specifying unit is: Among the operating conditions in the overlapping operating condition range, the operating condition that minimizes the energy consumption of the lower-order air conditioner is specified as the predetermined operating condition, or the operating conditions included in the operating condition range Among them, the average of a plurality of operating conditions that minimize the energy consumption of the lower air conditioning equipment is specified as the predetermined condition.
The air conditioning control system according to claim 6.   In each operable condition range extracted by the operating range extraction unit, when one operable condition range does not overlap with another operable condition range, the operating condition specifying unit The air conditioning control system according to claim 6, wherein the predetermined operation condition is specified based on an operation condition that minimizes an energy consumption amount of the lower-order air conditioner. In the predetermined processing order set by the processing order setting unit, the air conditioner located on the upper side of the air conditioner based on the operating state of the one air conditioner for which the operation condition is commanded by the operation condition output unit The driving state estimation unit for estimating the driving state of
The air conditioning control system according to any one of claims 1 to 8, further comprising: For an air conditioning system including a plurality of air conditioners for air conditioning in a predetermined room, a program for causing a computer to control the operation state of each of the plurality of air conditioners,
In the computer,
A processing order setting step for setting a predetermined processing order for the plurality of air conditioners according to the flow of air conditioning load processing in the air conditioning system;
In accordance with the predetermined processing order set in the processing order setting step, an operation control step for controlling a part or all of the operation state among the plurality of air conditioners is executed,
The operation control step includes
The target operating state of the higher-order air conditioner located on the upper side among the plurality of air conditioners in the predetermined processing order is achieved, or the target air-conditioning state in the predetermined room is achieved An operation range extracting step of extracting a range of operable conditions of the lower-order air conditioner located on the lower side in the predetermined processing order from pre-operating conditions set in advance for the lower-order air conditioner;
An operation condition specifying step for specifying, as a predetermined operation condition of the lower air conditioner, an operation condition in which the energy consumption amount of the lower air conditioner is in a predetermined minimum state from the operable condition range extracted by the operation range extracting unit When,
In accordance with the predetermined operation condition specified by the operation condition specifying unit, an operation condition output step for instructing an operation condition of the lower-order air conditioner,
A program for air conditioning control. In the processing order setting step, the predetermined processing includes: automatically setting the room temperature in the predetermined room to the target air conditioning temperature; or accepting the target air conditioning temperature that is a room temperature requirement in the predetermined room issued by a user. Set to the top in the order,
In the operation control step, based on the target air conditioning temperature, the operation state of the air conditioner according to the predetermined processing order is sequentially controlled from the air conditioner side toward the lowest air conditioner.
The program for air-conditioning control of Claim 10. The operation state control of the air conditioner in the operation control step starts with an intermediate air conditioner excluding the highest and lowest air conditioners in the predetermined process order set in the process order setting step as a starting point. Is possible,
The program for air-conditioning control of Claim 10. For an air conditioning system including a plurality of air conditioners for air conditioning in a predetermined room, a control method for controlling the operating state of each of the plurality of air conditioners,
A processing order setting step for setting a predetermined processing order for the plurality of air conditioners according to the flow of air conditioning load processing in the air conditioning system;
An operation control step of controlling a part or all of the operation states of the plurality of air conditioners according to the predetermined processing order set in the processing order setting step,
The operation control step includes
The target operating state of the higher-order air conditioner located on the upper side among the plurality of air conditioners in the predetermined processing order is achieved, or the target air-conditioning state in the predetermined room is achieved An operation range extracting step of extracting a range of operable conditions of the lower-order air conditioner located on the lower side in the predetermined processing order from pre-operating conditions set in advance for the lower-order air conditioner;
An operation condition specifying step for specifying, as a predetermined operation condition of the lower air conditioner, an operation condition in which the energy consumption amount of the lower air conditioner is in a predetermined minimum state from the operable condition range extracted by the operation range extracting unit When,
In accordance with the predetermined operation condition specified by the operation condition specifying unit, an operation condition output step for instructing an operation condition of the lower-order air conditioner,
An air conditioning control method.

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