Air conditioning control device and method

Abstract

To achieve heat load air conditioning control in an air conditioning system in which a VAV unit and a fan coil unit coexist.SOLUTION: An air conditioning control device 10 includes: a zone dividing section 151 for dividing a zone in which an FCU 24 is installed among zones into which a space R is divided into a zone in which the FCU 24 is not installed and a zone in which the FCU 24 is installed; a data acquiring section 150 for acquiring surface temperature data of an object existing in each of the zones after division change; a heat load calculating section 152 for calculating a zone heat load required to control an air-conditioned temperature of a first zone except for the zone in which the FCU 24 is installed among the zones after division change to an indoor set temperature, and calculating an air conditioner heat load to be supplied from an AHU 22; a supply air temperature calculating section 154 for calculating a supply air set temperature of the AHU 22; and a supply air quantity calculating section 155 for calculating a supply air quantity to be supplied to the first zone from VAV units 23-1, 23-2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an air conditioning control technology used in a VAV type central air conditioning system. [Background technology]

[0002] In recent years, buildings with relatively large air-conditioned spaces, such as office buildings, have introduced VAV (Variable Air Volume) central air-conditioning systems as their air-conditioning systems. A VAV central air-conditioning system is a system in which a variable air volume type air-conditioning device (VAV unit) is placed in each zone created by dividing the air-conditioned space into several zones, supplying each zone with air conditioned by the air-conditioning device (AHU: Air Handling Unit), and controlling the volume of the supply air sent to the air-conditioned space by the VAV unit in each zone.

[0003] Conventionally, in such VAV type central air conditioning systems, a load-linked air conditioning control technology has been proposed that utilizes CFD forward analysis and CFD inverse analysis of CFD (Computational Fluid Dynamics), a type of distributed system simulation, as an air conditioning control technology for optimally controlling the thermal environment in a certain zone within the air-conditioned space (see, for example, Patent Documents 1 and 2).

[0004] This type of load-linked air conditioning control technology identifies optimal values ​​for the AHU supply air set temperature and each VAV air volume by repeatedly executing CFD forward analysis processing and CFD inverse analysis processing for each air conditioning control cycle. Specifically, the CFD forward analysis processing derives the temperature distribution in the air conditioned space based on boundary conditions for the air conditioned space, such as the walls, VAV air outlet volume (air volume) and outlet temperature, and the heat generation status from heat sources such as human bodies and PCs (Personal Computers) present in the air conditioned space. In addition, the CFD inverse analysis processing identifies air conditioning control parameters such as the AHU supply air set temperature and each zone's supply air volume, based on the temperature distribution obtained by the CFD forward analysis processing, in which the temperature of the target zone is corrected to the set temperature.

[0005] In such conventional load-linked air conditioning control technology, in order to converge air conditioning control parameters such as the AHU supply air temperature setting and the supply air volume of each zone to the optimal value, it is necessary to repeatedly perform CFD analysis for each air conditioning control cycle of about several minutes. However, because the CFD analysis process requires a huge amount of calculation processing, there is a problem that air conditioning control devices consisting of general industrial controllers cannot keep up with the air conditioning control cycle. For this reason, there is a problem that using an industrial controller with high calculation capacity increases the cost of the air conditioning control device. In addition, there is a problem that the responsiveness of the air conditioning control decreases when the air conditioning control cycle is extended.

[0006] Therefore, a heat load air conditioning control technology has been proposed that calculates the heat load required for air conditioning control based on surface temperature information from an infrared radiation temperature sensor, calculates the supply air temperature setting of the air conditioner based on this heat load, and calculates the supply air volume of each zone based on the supply air temperature setting (see Patent Document 3). With heat load air conditioning control technology, it is possible to eliminate the need for advanced and complicated calculation processing such as conventional CFD analysis processing.

[0007] In the heat load air conditioning control technology disclosed in Patent Document 3, air conditioning parameters (supply air set temperature, supply air volume) are determined from indoor surface temperature information, and air conditioning control is performed. However, whereas a VAV unit can finely adjust the supply air volume, a fan coil unit cannot finely adjust the supply air volume for each zone like a VAV unit can. For this reason, there was an issue that heat load air conditioning control could not be applied to an air conditioning system that combines VAV units and fan coil units. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] JP 2011-89677 A [Patent Document 2] JP 2015-36589 A [Patent Document 3] JP 2020-56546 A Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has been made to solve the above-mentioned problems, and aims to provide an air conditioning control device and method that can realize heat load air conditioning control in an air conditioning system that combines VAV units and fan coil units. [Means for solving the problem]

[0010] The air conditioning control device of the present invention includes a zone dividing unit configured to change the division of the space by dividing a zone in which a fan coil unit is installed, among predetermined zones that virtually divide the same space to be air-conditioned, into two zones, one in which the fan coil unit is not installed and one in which the fan coil unit is installed; a data acquiring unit configured to acquire surface temperature data of objects present in each zone after the division has been changed; and a zone heat load required to control the air conditioning of the first zone to an indoor set temperature for each first zone based on the surface temperature data of a first zone among the zones after the division has been changed, excluding the zone in which the fan coil unit is installed, and data on a known contact area between the first zone and an adjacent zone, and a control unit configured to control an air conditioning unit based on the zone heat load of each of the first zones. the air conditioner thermal load to be supplied to the variable air volume unit from the first zone; a supply air temperature calculation unit configured to calculate a new value of the supply air set temperature of the air conditioner based on the indoor set temperature of each of the first zones and the air conditioner thermal load; a supply air volume calculation unit configured to calculate, for each of the first zones, a new value of the supply air volume to be supplied to the first zone from the variable air volume unit that receives a supply of conditioned air from the air conditioner based on the new value of the supply air set temperature, the indoor set temperature of the first zone, and the zone thermal load of the first zone; and an air conditioning instruction unit configured to notify an air conditioning controller that controls the air conditioner, the variable air volume unit, and the fan coil unit of the new value of the supply air set temperature and the new value of the supply air volume.

[0011] In one configuration example of the air conditioning control device of the present invention, the device further includes a room temperature calculation unit configured to estimate an indoor temperature of each zone for each of the first zones based on the surface temperature data of the first zone, the current supply air setting temperature of the air conditioner, and the current supply air volume to be supplied to the first zone, and a set temperature determination unit configured to determine indoor set temperatures of all zones after the classification change for each of the zones, and the set temperature determination unit determines the cooling set temperature of the first zone for a zone in which the indoor temperature estimated value calculated by the room temperature calculation unit for the first zone is higher than the cooling set temperature of the first zone. The constant temperature is set as the indoor set temperature, and for zones in which the indoor temperature estimated value of the first zone is lower than the heating set temperature of the first zone, the heating set temperature of the first zone is set as the indoor set temperature, for zones in which the indoor temperature measured by a temperature sensor in the second zone in which the fan coil unit is installed is higher than the cooling set temperature of the second zone, the cooling set temperature of the second zone is set as the indoor set temperature, and for zones in which the indoor temperature of the second zone is lower than the heating set temperature of the second zone, the heating set temperature of the second zone is set as the indoor set temperature.

[0012] In addition, in one configuration example of the air conditioning control device of the present invention, the set temperature determination unit determines the indoor set temperature for a zone in which the indoor temperature estimated value of the first zone is equal to or lower than the cooling set temperature of the first zone and equal to or higher than the heating set temperature of the first zone, so that the air conditioner operation mode of the first zone is a blowing mode, and determines the indoor set temperature for a zone in which the indoor temperature estimated value of the second zone is equal to or lower than the cooling set temperature of the second zone and equal to or higher than the heating set temperature of the second zone, so that the air conditioner operation mode of the second zone is a blowing mode. In addition, in one configuration example of the air conditioning control device of the present invention, the set temperature determination unit sets the average value of the surface temperatures of objects present in a zone where the indoor temperature estimated value of the first zone is lower than the cooling set temperature of the first zone and is higher than the heating set temperature of the first zone as the indoor set temperature of the first zone, and sets the average value of the surface temperatures of objects present in a zone where the indoor temperature of the second zone is lower than the cooling set temperature of the second zone and is higher than the heating set temperature of the second zone as the indoor set temperature of the second zone.

[0013] In addition, in one configuration example of the air conditioning control device of the present invention, the heat load calculation unit calculates, for each first zone, an object supply heat amount supplied to the first zone from the surface of an object present in the first zone based on surface temperature data of the first zone, calculates, for each first zone, an adjacent zone supply heat amount supplied from the adjacent zone to the first zone based on the indoor set temperature of the first zone and the indoor set temperature of the adjacent zone and the contact area data, and calculates the sum of the object supply heat amount and the adjacent zone supply heat amount for each first zone to obtain the zone heat load. Furthermore, in one configuration example of the air conditioning control device of the present invention, the supply air temperature calculation unit calculates an average set temperature which is the average value of the indoor set temperatures of each of the first zones, and calculates a new value of the supply air set temperature based on the average set temperature, the known minimum airflow of the air conditioner, and the air conditioner thermal load.

[0014] The air-conditioning control method of the present invention includes a first step of changing the division of the space by dividing a zone in which a fan coil unit is installed, among predetermined zones that virtually divide the same space to be air-conditioned, into two zones, a zone in which the fan coil unit is not installed and a zone in which the fan coil unit is installed; a second step of acquiring surface temperature data of objects present in each zone after the division has been changed; and a second step of calculating, for each first zone, a zone heat load required to control the first zone to an indoor set temperature based on the surface temperature data of a first zone excluding the zone in which the fan coil unit is installed among the zones after the division has been changed and data on a known contact area between the first zone and an adjacent zone, and calculating a zone heat load for each of the first zones. The method includes a third step of calculating an air conditioner thermal load to be supplied from the air conditioner to a variable air volume unit based on a load; a fourth step of calculating a new value of the supply air set temperature of the air conditioner based on the indoor set temperature and the air conditioner thermal load of each of the first zones; a fifth step of calculating, for each first zone, a new value of the supply air volume to be supplied to the first zone from a variable air volume unit that receives a supply of conditioned air from the air conditioner based on the new value of the supply air set temperature, the indoor set temperature of the first zone, and the zone thermal load of the first zone; and a sixth step of notifying an air conditioning controller that controls the air conditioner, the variable air volume unit, and the fan coil unit of the new value of the supply air set temperature and the new value of the supply air volume.

[0015] Moreover, one configuration example of the air-conditioning control method of the present invention further includes, between the second step and the third step, a seventh step of estimating an indoor temperature of each zone for each of the first zones based on the surface temperature data of the first zone, the current supply air setting temperature of the air conditioner, and the current supply air volume to be supplied to the first zone, and an eighth step of determining indoor setting temperatures of all zones after the classification change for each of the zones, and the eighth step includes determining the cooling setting temperature of the first zone for a zone in which the indoor temperature estimated value calculated in the seventh step for the first zone is higher than the cooling setting temperature of the first zone. The method includes a step of setting the set temperature as an indoor set temperature, and for a zone in which the indoor temperature estimated value of the first zone is lower than the heating set temperature of the first zone, setting the heating set temperature of the first zone as the indoor set temperature, for a zone in which the indoor temperature measured by a temperature sensor of the second zone in which the fan coil unit is installed is higher than the cooling set temperature of the second zone, setting the cooling set temperature of the second zone as the indoor set temperature, and for a zone in which the indoor temperature of the second zone is lower than the heating set temperature of the second zone, setting the heating set temperature of the second zone as the indoor set temperature.

[0016] In addition, in one configuration example of the air conditioning control method of the present invention, the eighth step is characterized by including a step of determining an indoor set temperature for a zone in which the indoor temperature estimated value of the first zone is equal to or lower than the cooling set temperature of the first zone and equal to or higher than the heating set temperature of the first zone, such that the air conditioner operation mode of the first zone is a blowing mode, and determining an indoor set temperature for a zone in which the indoor temperature estimated value of the second zone is equal to or lower than the cooling set temperature of the second zone and equal to or higher than the heating set temperature of the second zone, such that the air conditioner operation mode of the second zone is a blowing mode. Furthermore, in one configuration example of the air conditioning control method of the present invention, the eighth step is characterized by including a step of setting the average value of the surface temperatures of objects present in a zone in which the indoor temperature estimated value of the first zone is equal to or lower than the cooling set temperature of the first zone and equal to or higher than the heating set temperature of the first zone as the indoor set temperature of the first zone, and setting the average value of the surface temperatures of objects present in a zone in which the indoor temperature of the second zone is equal to or lower than the cooling set temperature of the second zone and equal to or higher than the heating set temperature of the second zone as the indoor set temperature of the second zone. Effect of the Invention

[0017] According to the present invention, a zone in which a fan coil unit is installed is divided into two zones, one in which a fan coil unit is not installed and one in which a fan coil unit is installed, and heat load air conditioning control is performed in the same manner as in the conventional manner for the first zone in which a fan coil unit is not installed, thereby making it possible to realize heat load air conditioning control in an air conditioning system that mixes variable air volume units and fan coil units.

[0018] In addition, by providing a room temperature calculation unit and a set temperature determination unit, the present invention can apply heat load air conditioning control to an air conditioning system in which the cooling set temperature and heating set temperature for each zone can be set individually. In the present invention, a dead zone can be set by the cooling set temperature and heating set temperature, so hunting in the air conditioning control can be prevented. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a block diagram showing the configuration of an air conditioning system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing the configuration of an air conditioning controller according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a flowchart illustrating the operations of the air conditioning control device, the air conditioning controller, the VAV unit, and the fan coil unit according to the first embodiment of the present invention. [Figure 4]FIG. 4 is a diagram showing an example in which the division of space is changed in the first embodiment of the present invention. [Diagram 5] FIG. 5 is a block diagram showing the configuration of an air conditioning system according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a flowchart illustrating the operations of the air conditioning control device, the air conditioning controller, the VAV unit, and the fan coil unit according to the second embodiment of the present invention. [Figure 7] FIG. 7 is a diagram showing an example of the configuration of a computer that realizes the air conditioning control device and the air conditioning controller according to the first and second embodiments of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] [First Example] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing the configuration of an air conditioning system according to a first embodiment of the present invention. The air conditioning system 20 includes an air conditioning control device 10, an air conditioning controller 21, an air conditioner (AHU) 22, VAV units 23-1 and 23-2 which are variable air volume units, and a fan coil unit (FCU) 24.

[0021] The air conditioning control device 10 is made up of an arithmetic processing device such as an industrial controller or a server device, and has the function of calculating and instructing supply air parameters such as the supply air volume and supply air set temperature used in the AHU 22 and VAV units 23-1, 23-2 based on data detected from the space R to be air conditioned. The air conditioning control device 10 is connected to the air conditioning controller 21 and a facility management device 31 of the facility management system 30 via communication line L1.

[0022] The air conditioning controller 21, the AHU 22, N (N is an integer equal to or greater than 2, and in this embodiment N=2) VAV units 23-1, 23-2, and the FCU 24 are connected to each other via a communication line L2. The air conditioning controller 21 is an industrial controller and has the function of controlling the AHU 22, the VAV units 23-1, 23-2, and the FCU 24 based on air supply parameters instructed by the air conditioning control device 10.

[0023] The AHU 22 has a function of generating conditioned air at a supply temperature specified by the air conditioning controller 21, and sending the air to the VAV units 23-1 and 23-2. The VAV units 23-1, 23-2 are general variable air volume units installed in each of multiple zones Z of the space R, and have the function of supplying conditioned air blown from the AHU 22 to the space R at the supply air volume specified by the air conditioning controller 21.

[0024] In the example of FIG. 1, a space R is divided into two (N=2) zones Z1 and Z2, and VAV units 23-1 and 23-2 are installed in each zone. In the following, this is generalized to a case where one AHU 22 is installed in the space R, and N zones Z n A case will be described as an example in which N VAV units 23-i are connected in one-to-one correspondence with (n=1, 2, . . . , N).

[0025] The number of zones and VAV units and the relationship between the zones and the VAV units are not limited to those in this embodiment, and it is sufficient that at least one VAV unit is placed in one zone. For example, if multiple VAV units are installed in one zone, the present invention can be applied in the same manner as described below by replacing these multiple VAV units with one representative VAV unit to calculate the supply air volume of the zone, and then dividing the finally obtained supply air volume among the respective VAV units.

[0026] Furthermore, the number of AHUs 22 is not limited to that in this embodiment. For example, even in a configuration in which a plurality of AHUs 22 are arranged in the space R and a plurality of VAV units are connected to each AHU 22, the present invention can be applied in the same manner as described below by calculating the air conditioner thermal load and supply air volume for each AHU 22 (for each air conditioning system).

[0027] In this embodiment, the FCU 24 is disposed in zone Z2. A heat medium (cold water or hot water) supplied from a heat source unit (not shown) is sent to the FCU 24, passes through the FCU 24, and is returned to the heat source unit. The FCU 24 exchanges heat between the heat medium and air (return air) returning from zone Z2 to the FCU 24, or between a mixed air (a mixture of return air and outside air) and the heat medium, and sends the cooled or heated air to zone Z2. The flow rate of the heat medium passing through the FCU 24 is controlled by a valve of the FCU 24.

[0028] The facility management system 30 manages each zone Z of a space R that is a management target facility. n Specifically, a system such as a human detection system may be used. The facility management system 30 mainly comprises a facility management device 31 and a plurality of infrared sensors 32, which are connected to each other via a communication line L3.

[0029] The facility management device 31 is composed of an industrial controller, and processes the temperature distribution (thermal image) detected by each infrared sensor 32 to identify each zone Z. n The device has a function of detecting pairs of the surface temperature and the surface area of ​​each object present within the room and notifying the pair of surface temperature data to the air conditioning control device 10. If there are areas with different surface temperatures on the surface of an object, it is sufficient to detect pairs of the surface temperature and the surface area of ​​each of these areas separately.

[0030] For surface area, Zone Z nAlternatively, the projection area on the imaging plane when an object present in the vicinity of the infrared sensor 32 is imaged by the infrared sensor 32 may be used. This makes it possible to obtain a surface area corresponding to the surface temperature detected by the infrared sensor 32, and to more accurately calculate the amount of heat supplied to the object, which will be described later. Note that the surface area of ​​the object may be calculated based on the projection area in a two-dimensional image captured by a single infrared sensor 32, or may be calculated three-dimensionally using a multi-faceted image captured by two or more infrared sensors 32.

[0031] The infrared sensors 32 are composed of infrared sensors such as thermopiles, thermistors, and porometers, and have a function of detecting a temperature distribution indicating the surface temperature of an object O, such as a wall, floor, desk, PC, or person, located within their own detection range, and outputting the temperature distribution to the facility management device 31. Based on the detection range of each infrared sensor 32, the infrared sensors 32 may be distributed on, for example, the ceiling and walls of the space R so as to cover the entire space R.

[0032] Next, the configuration of the air conditioning control device 10 will be described in detail with reference to Fig. 1. The air conditioning control device 10 includes a communication I / F unit 11, an operation input unit 12, a display unit 13, a storage unit 14, and a calculation processing unit 15.

[0033] The communication I / F unit 11 has a function of performing data communication between the air conditioning controller 21 and the facility management device 31 via the communication line L1. The operation input unit 12 is made up of operation input devices such as a keyboard, a touch panel, a mouse, operation buttons, and switches, and has the function of detecting an operator's operation and outputting it to the calculation processing unit 15 . The display unit 13 is made up of display elements such as an LCD or an LED, and has the function of visually displaying the data output from the arithmetic processing unit 15 .

[0034] The memory unit 14 is made up of a storage device such as a hard disk or semiconductor memory, and has the function of storing a program 14P and various processing data used for the air conditioning control processing executed by the calculation processing unit 15. The program 14P is stored in advance in the memory unit 14 from an external device or recording medium connected to the air conditioning control device 10. The data stored in the memory unit 14 includes spatial shape data including shape data of the space R, position data of the VAV units 23-1, 23-2, and position data of the FCU 24, thermal imaging data and surface temperature data acquired from the facility management system 30, and zone Z data. n The data includes zone data including the position data and contact area data with adjacent zones, performance data of the AHU 22, performance data of the VAV units 23-1 and 23-2, and performance data of the FCU 24.

[0035] The calculation processing unit 15 has a CPU (Central Processing Unit) and its peripheral circuits, and has a function of realizing various processing functions by making the CPU work in cooperation with the program 14P in the storage unit 14. The main processing units realized by the calculation processing unit 15 include a data acquisition unit 150, a zone division unit 151, a heat load calculation unit 152, a supply air parameter calculation unit 153, and an air conditioning instruction unit 156. The supply air parameter calculation unit 153 is composed of a supply air temperature calculation unit 154 and a supply air volume calculation unit 155.

[0036] The data acquisition unit 150 receives the facility management information of each zone Z from the facility management device 31 of the facility management system 30 via the communication I / F unit 11 and the communication line L1. n A function of acquiring a pair of the surface temperature Tw and the surface area Aw of an object present in each zone Z and storing them as surface temperature data in the memory unit 14; n The facility management device 31 has a function of acquiring a human detection result that detects a person present within the facility and storing the result as human detection data in the memory unit 14. The data acquisition unit 150 and the heat load calculation unit 152 may calculate the surface temperature and surface area of ​​the object based on the thermal imaging data acquired from the facility management device 31.

[0037] The zone division unit 151 divides the zone Z in which the FCU 24 is installed. n The division of the space R is changed by dividing the space R into two zones: a zone where the FCU 24 is not installed and a zone where the FCU 24 is installed. Hereinafter, the N zones Z n For the X zones after the division change, let Znew i (i = 1, 2, , X). Also, let Znew be X zones. i Of these, N zones Znew do not have FCU24 installed. j For (j=1,2,...,N), the zone Znew where FCU24 is installed k Let (k=N+1, ,X) be Q (X=N+Q). The number of zones after reclassification, X, is the number of zones before reclassification, N, plus the number of zones divided into two.

[0038] The heat load calculation unit 152 calculates the zone Znew based on the surface temperature data and the zone data acquired from the storage unit 14. j The indoor temperature setting Tsp j Zone heat load Qz required for air conditioning control j Znew j The function to calculate each zone heat load Qz j Based on this, the air conditioner heat load Q that should be supplied from AHU22 AHU It also has the function of calculating

[0039] More specifically, the heat load calculation unit 152 calculates the zone Znew based on the surface temperature data. j From the surface of the object in the zone Znew j The amount of heat supplied to the object Qw j and the ability to calculate the zone Znew based on the zone data j Adjacent zone Z of r From Zone Znew j Heat supply quantity Qr to adjacent zone j and the function to calculate the amount of heat supplied to the object Qw j and adjacent zone heat supply Qr j Znew is a place for harmony j Zone heat load Qzj It also has the function of calculating for each zone.

[0040] The supply air temperature calculation unit 154 calculates the temperature of each zone Znew j Indoor set temperature Tsp j and air conditioner heat load Q AHU Based on this, it has a function of calculating the supply air set temperature Tsa of the AHU 22. More specifically, the supply air temperature calculation unit 154 calculates the supply air temperature Znew j Indoor set temperature Tsp j The function to calculate the average set temperature Tsp, which is the average of the above, and the minimum airflow W of the AHU22 AHUmin With the low pressure specific heat C and density ρ of air, the air conditioner heat load Q AHU and calculating the supply air set temperature Tsa by subtracting the result of the division from the average set temperature Tsp.

[0041] In addition, the supply air temperature calculation unit 154 has a function of setting the minimum supply air temperature as the supply air set temperature Tsa when the obtained supply air set temperature Tsa is lower than the minimum supply air temperature of the AHU 22, and a function of setting the maximum supply air temperature as the supply air set temperature Tsa when the obtained supply air set temperature Tsa is higher than the maximum supply air temperature of the AHU 22. The supply air volume calculation unit 155 calculates the supply air set temperature Tsa and the room set temperature Tsp j Based on the surface temperature data, each zone Znew j Air supply volume Wz j Znew j It has the function of calculating every

[0042] The air conditioning instruction unit 156 receives the supply air set temperature Tsa of the AHU 22 calculated by the supply air temperature calculation unit 154 and the zone Znew calculated by the supply air volume calculation unit 155. j Air supply volume Wz j The communication I / F unit 11 has a function of issuing instructions to the air conditioning controller 21 of the air conditioning system 20 via the communication I / F unit 11 and the communication line L1.

[0043] 2 is a block diagram showing the configuration of the air conditioning controller 21. The air conditioning controller 21 includes a communication I / F unit 26, a storage unit 27, and a calculation processing unit . The communication I / F unit 26 has a function of performing data communication with the air conditioning control device 10 via the communication line L1, and also performing data communication with the AHU 22, the VAV units 23-1, 23-2, and the FCU 24 via the communication line L2.

[0044] The memory unit 27 is made up of a storage device such as a hard disk or a semiconductor memory, and has a function of storing a program 27P and various processing data used for the air conditioning control processing executed by the arithmetic processing unit 28. The program 27P is stored in advance in the memory unit 27 from an external device or a recording medium connected to the air conditioning controller 21.

[0045] The calculation processing unit 28 has a CPU and its peripheral circuits, and has a function of realizing various processing functions by causing the CPU to cooperate with the program 27P in the storage unit 27. The main processing units realized by the calculation processing unit 28 include a receiving unit 280, an operation amount calculation unit 281, an intake air temperature control unit 282, an air volume calculation unit 283, an air volume control unit 284, an air volume notification unit 285, and an FCU control unit 286.

[0046] Next, the operations of the air conditioning control device 10, the air conditioning controller 21, the VAV units 23-1 and 23-2, and the FCU 24 of this embodiment will be described with reference to FIG. First, the zone division unit 151 divides the zone Z in which the FCU 24 is installed. n The division of the space R is changed by dividing the space R into two zones, one where the FCU 24 is not installed and one where the FCU 24 is installed (step S100 in FIG. 3). n For the X zones after the division change, let Znew i (i = 1, 2, , X). Also, let Znew be X zones. i Among them, N zones where FCU24 is not installed are called Znew j(j=1,2,···,N), the zone where FCU24 is installed is Znew k Let (k = N + 1, ,X).

[0047] The storage unit 14 stores in advance spatial shape data including shape data of the space R, position data of the VAV units 23-1 and 23-2, position data of the FCU 24, etc. n The zone data including the position data is stored in advance. The zone division unit 151 can change the division of the space R based on this data.

[0048] An example of changing the division of the space R shown in FIG. 1 is shown in FIG. 4. In the example of FIG. 4, the zone Z2 in which the FCU 24 is installed is divided into two zones: a zone Znew2 in which the FCU 24 is not installed, and a zone Znew3 in which the FCU 24 is installed. The zone Z2 may be divided equally into the two zones Znew2 and Znew3. The zone division unit 151 divides the zone Znew after the division change. i and stores this position data in the storage unit 14. In the following processing of this embodiment, when the word "zone" is simply mentioned, it means the zone after the classification change.

[0049] Next, the data acquisition unit 150 acquires thermal imaging data of the space R from the facility management device 31 of the facility management system 30 via the communication I / F unit 11 and the communication line L1. The data acquisition unit 150 processes the acquired thermal image of the space R to obtain thermal imaging data of each zone Znew i The surface temperature Tw of an object present in the zone and a pair of the surface area Aw of the object are detected for each zone, and are stored in the storage unit 14 as surface temperature data (step S101 in FIG. 3). i Since the position data of each zone Znew in the thermal image is stored in the storage unit 14, the data acquisition unit 150 i It is possible to recognize the position of the object. If there are regions with different surface temperatures on the surface of an object, it is sufficient to detect the pair of the surface temperature and its surface area for each of these regions separately.

[0050] Next, the heat load calculation unit 152 calculates the heat load of the zone Znew in which the FCU 24 is installed. k Excluding Zone Znew j The surface temperature data, the zone data stored in the storage unit 14, and the manager of the air conditioning system or the zone Znew j Zone set by residents of Znew j Indoor set temperature Tsp j Based on Znew j The indoor temperature setting Tsp j Zone heat load Qz required to control air conditioning j ,Zone Znew j The zone Znew is calculated every time (step S102 in FIG. 3). j Indoor set temperature Tsp j About Znew j Zone Z before the classification change n The indoor set temperature Tsp n can be used.

[0051] Zone Znew j Zone heat load Qz j Znew j From objects present in zone Znew j The amount of heat supplied to the object Qw j And, Zone Znew j Adjacent zone Z adjacent to r From Zone Znew j Heat supply quantity Qr to adjacent zone j Therefore, the zone heat load Qz j As shown in the following equation (1), the heat supply quantity Qw j and adjacent zone heat supply Qr j It can be calculated by adding Qz j =Qw j +Qr j (1)

[0052] Here, the zone Znew j Surface temperature data of the zone Znew jThe zone Znew contains m sets (m = 1, 2, . . . , M, M is an integer equal to or greater than 2) of data pairs of the surface temperature Tw and the surface area Aw of the object existing within the zone Znew. j The m-th surface temperature included in the surface temperature data is Tw (j,m) , surface temperature Tw (j,m) The m-th surface area that pairs with Aw (j,m) Then, the zone Znew j From objects present in zone Znew j The convective heat transfer rate to air in Kw, zone Znew j Set the indoor temperature to Tsp j Then, the zone Znew j From objects present in zone Znew j The amount of heat supplied to the object Qw j is calculated by the following formula (2). Note that the convection heat conductivity Kw can be calculated by using a known value, for example, as described in the literature "Tanaka Shunroku et al., "Latest Architectural Environmental Engineering," Inoue Shoin, Revised 3rd Edition, July 10, 2007."

[0053]

number

[0054] The storage unit 14 stores the zone Z n Location data and Zone Z n However, since the division of the space R has been changed by the zone dividing unit 151, it is necessary to modify the data of the contact area in accordance with this change. The shape data of the space R is stored in the storage unit 14 in advance, and the zone Znew after the division has been changed by the zone dividing unit 151 is i The position data of the new zone Znew is registered. The heat load calculation unit 152 calculates the heat load by calculating the heat load of the new zone Znew based on the contact area data stored in advance in the storage unit 14, the shape data of the space R, and the new zone Znew. i Based on the location data and the zone Znew j and adjacent zone Z r (r=1,2,...,X, r≠j) (j,r) Generate data.

[0055] Adjacent Zone Z r From Zone Znew j The convection heat transfer coefficient of the air in the air is Kz, and the person in charge of the air conditioning system or the person in the adjacent zone Z r Neighborhood zone Z established by residents of r Set the indoor temperature to Tn (j,r) =Tsp r Then, the adjacent zone Z r From Zone Znew j Heat supply quantity Qr to adjacent zone j is calculated by the following formula (3): Note that the convection thermal conductivity Kz may be empirically determined in advance through field experiments in the space R or through actual operation.

[0056]

number

[0057] The heat load calculation unit 152 calculates the amount of heat supplied to the object Qw by the formula (2). j Znew j The amount of heat supplied to the adjacent zone Qr is calculated using equation (3). j Znew j Calculate the zone heat load Qz by formula (1). j Znew j It is sufficient to perform the calculation every time (step S102).

[0058] After that, the heat load calculation unit 152 calculates the heat load of the zone Znew in which the FCU 24 is installed, as shown in the following formula (4). k Each zone Znew except for Znew3 in Fig. 4 j Zone heat load Qz j By adding these up, the air conditioner heat load Q to be supplied from AHU 22 to VAV units 23-1 and 23-2 is calculated. AHU (Step S103 in FIG. 3) In the example in FIG. 4, the sum of the zone heat loads Qz1 and Qz2 of the zones Znew1 and Znew2 is calculated.

[0059]

number

[0060] Next, the supply air temperature calculation unit 154 calculates the supply air temperature Znew in which the FCU 24 is installed, as shown in the following formula (5). k Each zone except Znew j Indoor set temperature Tsp j The average set temperature Tsp is calculated (step S104 in FIG. 3). AHU Each zone in Znew j Zone heat load Qz j By weighting, the indoor set temperature Tsp j The weighted average of these is used as the average set temperature Tsp.

[0061]

number

[0062] Next, the supply air temperature calculation unit 154 calculates the supply air temperature of the zone Znew k Each zone except Znew j Average set temperature Tsp and air conditioner heat load Q AHU Based on this, the supply air set temperature Tsa of the AHU 22 is calculated (step S105 in FIG. 3). AHUmin The low pressure specific heat of air is C(=1006[J / (kg K)]), and the density of air is ρ(=1.2[kg / m 3 ]), the supply air set temperature Tsa is calculated using the following equation (6).

[0063]

number

[0064] In addition, the supply air temperature calculation unit 154 checks whether the supply air set temperature Tsa calculated by the formula (6) is within the operable range of the AHU 22 set in the performance data (the minimum supply air temperature Tsa min and maximum supply air temperature Tsamax Specifically, the supply air temperature calculation unit 154 adjusts the supply air temperature Tsa so that the supply air set temperature Tsa calculated by the formula (6) falls within the range of the minimum supply air temperature Tsa min If it is below the minimum supply air temperature Tsa min is the supply air set temperature Tsa, and the supply air set temperature Tsa calculated using equation (6) is the maximum supply air temperature Tsa max If it exceeds the maximum supply air temperature Tsa max is the supply air set temperature Tsa.

[0065] The supply air volume calculation unit 155 calculates the supply air volume setting temperature Tsa and the zone Znew in which the FCU 24 is installed. k Excluding Zone Znew j Indoor set temperature Tsp j And, Zone Znew j Zone heat load Qz j Based on the Znew j Air supply volume Wz j Znew j The low pressure specific heat of air is C and the density of air is ρ. The supply air volume Wz j can be calculated using the following equation (7).

[0066]

number

[0067] The air conditioning instruction unit 156 receives the supply air set temperature Tsa of the AHU 22 calculated by the supply air temperature calculation unit 154 and the zone Znew calculated by the supply air volume calculation unit 155. j Air supply volume Wz j The air conditioning controller 21 is notified of this through the communication I / F unit 11 and the communication line L1 (Step S108 in FIG. 3).

[0068] The receiving unit 280 of the air conditioning controller 21 receives the supply air set temperature Tsa and the supply air volume Wz notified from the air conditioning control device 10 via the communication I / F unit 26 and the communication line L1. jThe manipulated variable calculation unit 281 of the air conditioning controller 21 calculates the manipulated variable using a predetermined control calculation algorithm (e.g., PID) so that the notified supply air set temperature Tsa and the supply air temperature of the AHU 22 coincide (FIG. 3, step S109).

[0069] The supply air temperature control unit 282 of the air conditioning controller 21 notifies the AHU 22 of the operation amount calculated by the operation amount calculation unit 281 via the communication I / F unit 26 and communication line L2 (step S110 in FIG. 3). In this way, the amount of heat transfer medium (cold water or hot water) supplied to the cooling coil or heating coil of the AHU 22 is adjusted according to the operation amount, and the supply air temperature is controlled.

[0070] The air volume calculation unit 283 of the air conditioning controller 21 calculates the air volume of each zone Znew j Air supply volume Wz j The total required air volume is calculated by adding up the values ​​of (FIG. 3, step S111). The air volume control unit 284 of the air conditioning controller 21 determines the fan rotation speed of the AHU 22 based on the value of the total required air volume, and controls the fan of the AHU 22 to achieve the determined fan rotation speed (FIG. 3, step S112). In this way, the volume of the supply air sent out from the AHU 22 is controlled.

[0071] The air volume notification unit 285 of the air conditioning controller 21 receives the air volume Znew j Air supply volume Wz j are transmitted to the corresponding zones Z through the communication I / F unit 26 and the communication line L2. n As is clear from the above definition, the zone Znew after the division change is notified to the VAV unit 23-n. j (j=1,2,...,N) are the zones Z before the classification change. n (n=1,2,...,N). Each VAV unit 23-n receives the supply air volume Wz n =Wz j In order to ensure this, the opening degree of the damper in the device itself is controlled (FIG. 3, step S114).

[0072] On the other hand, the FCU control unit 286 of the air conditioning controller 21 is k Indoor temperature Tcr k Znew k Indoor set temperature Tsp k In this manner, the flow rate of the heat transfer medium passing through the FCU 24 is controlled by the valve of the FCU 24, and the FCU 24 supplies cooled or heated air to the FCU 24 as Znew. k Send to.

[0073] Zone Znew k Indoor set temperature Tsp k About Znew k Zone Z before the classification change n The indoor set temperature Tsp n You can also use the zone Znew k Indoor temperature Tcr k For the zone Znew, a value measured by a temperature sensor provided at the intake port of the FCU 24 may be used. If the FCU 24 does not have a temperature sensor, the zone Znew k The indoor temperature measured by the temperature sensor 25 installed in the k This can be done as follows.

[0074] The air conditioning control device 10 executes the process of Fig. 3 for each preset air conditioning control cycle, except that the process of step S100 needs to be executed only once at the start of air conditioning control.

[0075] As described above, in this embodiment, the zone in which an FCU is installed is divided into two zones: a zone in which an FCU is not installed and a zone in which an FCU is installed. In the zone in which an FCU is not installed, heat load air conditioning control is performed in the same manner as in the conventional method, and in the zone in which an FCU is installed, individual air conditioning control by the FCU is performed. This makes it possible to realize heat load air conditioning control in an air conditioning system that combines VAV units and FCUs.

[0076] [Second Example] Next, a second embodiment of the present invention will be described. In the first embodiment, the current value of the indoor temperature is not known for a zone where an FCU is not installed. However, if the current value of the indoor temperature is not known, it is not known which set temperature should be aimed for if one wishes to set the cooling set temperature and the heating set temperature separately, and therefore the cooling set temperature and the heating set temperature cannot be set. In other words, the first embodiment cannot be applied to an air conditioning system in which the cooling set temperature and the heating set temperature can be set separately. In addition, if the cooling set temperature and the heating set temperature cannot be set separately, there is no dead zone, and there is a problem that hunting of the air conditioning control is likely to occur. Therefore, in this embodiment, it is possible to set the cooling set temperature and the heating set temperature separately in heat load air conditioning control.

[0077] 5 is a block diagram showing the configuration of an air conditioning system according to this embodiment. The air conditioning system 20a includes an air conditioning control device 10a, an air conditioning controller 21, an AHU 22, VAV units 23-1 and 23-2, and an FCU 24.

[0078] The air conditioning control device 10a includes a communication I / F unit 11, an operation input unit 12, a display unit 13, a storage unit 14, and a calculation processing unit 15a. The main processing units realized by the calculation processing unit 15a include a data acquisition unit 150, a zone division unit 151, a heat load calculation unit 152, an air supply parameter calculation unit 153, an air conditioning instruction unit 156, a room temperature calculation unit 157, and a set temperature determination unit 158.

[0079] The configuration of the air conditioning controller 21 is the same as in the first embodiment. Next, the operations of the air conditioning control device 10a, the air conditioning controller 21, the VAV units 23-1 and 23-2, and the FCU 24 of this embodiment will be described with reference to FIG.

[0080] The operations of the zone division unit 151 and the data acquisition unit 150 (steps S200 and S201 in FIG. 6) are the same as those in the first embodiment. The room temperature calculation unit 157 calculates the temperature of the zone Znew in which the FCU 24 is installed. k Each zone except Znew j The surface temperature data of the objects present in the zone (surface temperature Tw and surface area Aw), the previous calculation result of the supply air setting temperature Tsa, and the zone Znew j Air supply volume Wz j Previous calculation results and indoor temperature Tcr j Based on the time since the last calculation of the zone Znew in which the FCU24 is installed k Each zone except Znew j Indoor temperature Tcr j Znew j The estimation is performed every 10 seconds (step S202 in FIG. 6).

[0081]

number

[0082] The room temperature calculation unit 157 calculates the room temperature Tcr by the formula (8). j [℃] is estimated for each zone. C is the specific heat of air (≒1006 [J / (kg·℃)]), ρ is the density of air (≒1.2 [kg / m 3 ]), K m is the convective heat transfer coefficient of the surface (usually 9[W / (m 2 ·K)], S j [m 2 ] is Zone Znew j Surface area of ​​Taverage j [℃] is the zone Znew j is the average surface temperature [℃].

[0083] Next, the set temperature determination unit 158 ​​determines whether the temperature is within the range of the zone Znew j Zone set by residents of Znew j Cooling setting temperature Tspc j and the zone Znew calculated by the room temperature calculation unit 157 j Estimated indoor temperature Tcr j (Step S203 in FIG. 6) and the estimated indoor temperature Tcr j is the cooling setting temperature Tspc jIf it is higher, the cooling setting temperature Tspc j Znew j Indoor set temperature Tsp j (Step S204 in FIG. 6). Zone Znew j Cooling setting temperature Tspc j About Znew j Zone Z before the classification change n Cooling set temperature Tspc n can be used.

[0084] The set temperature determination unit 158 ​​is also configured to determine whether the temperature is within the range of the zone Znew k Zone set by residents of Znew k Cooling setting temperature Tspc k and the zone Znew measured by the temperature sensor of FCU24 or the temperature sensor 25 k Indoor temperature Tcr k (Step S203) and compare the indoor temperature Tcr k is the cooling setting temperature Tspc k If it is higher, the cooling setting temperature Tspc k Znew k Indoor set temperature Tsp k (Step S204). k Cooling setting temperature Tspc k About Znew k Zone Z before the classification change n Cooling set temperature Tspc n can be used.

[0085] The set temperature determination unit 158 ​​determines the estimated indoor temperature Tcr j is the cooling setting temperature Tspc j If you are the administrator of the air conditioning system or the zone Znew j Zone set by residents of Znew j Heating setting temperature Tsph j and Znew j Estimated indoor temperature Tcr j(Step S205 in FIG. 6) and the estimated indoor temperature Tcr j Heating setting temperature Tsph j If lower, the heating setting temperature Tsph j Znew j Indoor set temperature Tsp j (Step S206 in FIG. 6). Zone Znew j Heating setting temperature Tsph j About Znew j Zone Z before the classification change n The heating temperature setting Tsph n can be used.

[0086] In addition, the set temperature determination unit 158 ​​determines the indoor temperature Tcr k is the cooling setting temperature Tspc k If you are the administrator of the air conditioning system or the zone Znew k Zone set by residents of Znew k Heating setting temperature Tsph k and Znew k Indoor temperature Tcr k (Step S205) and compare the indoor temperature Tcr k Heating setting temperature Tsph k If lower, the heating setting temperature Tsph k Znew k Indoor set temperature Tsp k (Step S206). Zone Znew k Heating setting temperature Tsph k About Znew k Zone Z before the classification change n The heating temperature setting Tsph n can be used.

[0087] The set temperature determination unit 158 ​​also determines whether the zone Znew k Excluding Zone Znew j Estimated indoor temperature Tcr j Znew j Cooling setting temperature Tspc jBelow and zone Znew j Heating setting temperature Tsph j If so, zone Znew j Zone Znew is set so that the air conditioner operation mode is in fan mode. j Indoor set temperature Tsp j (Step S207 in FIG. 6).

[0088] Similarly, the set temperature determination unit 158 ​​determines whether the zone Znew k Indoor temperature Tcr k Znew k Cooling setting temperature Tspc k Below and zone Znew k Heating setting temperature Tsph k If so, zone Znew k Zone Znew is set so that the air conditioner operation mode is in fan mode. k Indoor set temperature Tsp k is determined (step S207).

[0089] In the fan mode, in which neither cooling nor heating is performed, air is supplied for the purpose of ventilation and humidity control in the room. j The average surface temperature Tw of the objects in the zone Znew j Indoor set temperature Tsp j Similarly, the set temperature determination unit 158 ​​determines, for example, the zone Znew k The average surface temperature Tw of the objects in the zone Znew k Indoor set temperature Tsp k Let us assume that. The set temperature determination unit 158 ​​performs the above-mentioned processes of steps S203 to S207 for each zone.

[0090] The process of steps S208 to S221 in Fig. 6 is similar to the process of steps S102 to S115 in Fig. 3. The difference from steps S102 to S115 is that in the process of steps S208 to S221, the zone Znew j Indoor set temperature Tsp jThe zone Znew determined by the set temperature determination unit 158 k Indoor set temperature Tsp k The point is that it uses and.

[0091] In this way, in this embodiment, heat load air conditioning control can be applied to an air conditioning system in which the cooling set temperature and heating set temperature for each zone can be set individually by providing a room temperature calculation unit 157 and a set temperature determination unit 158. In this embodiment, a dead zone can be set by the cooling set temperature and heating set temperature, so hunting in the air conditioning control can be prevented.

[0092] The air conditioning control devices 10, 10a and the air conditioning controller 21 described in the first and second embodiments can each be realized by a computer equipped with a CPU, a storage device, and an interface, and a program that controls these hardware resources. An example of the configuration of this computer is shown in FIG.

[0093] The computer comprises a CPU 300, a storage device 301, and an interface device (I / F) 302. In the case of the air conditioning control devices 10, 10a, the communication I / F unit 11, the operation input unit 12, the display unit 13, etc. are connected to the I / F 302. In the case of the air conditioning controller 21, the communication I / F unit 26, etc. are connected to the I / F 302. In such a computer, a program for realizing the air conditioning control method of the present invention is stored in the storage device 301. The CPU 300 of each device executes the processing described in the first and second embodiments in accordance with the program stored in the storage device 301. [Industrial Applicability]

[0094] The present invention can be applied to air conditioning control. [Explanation of symbols]

[0095] 10, 10a... air conditioning control device, 11, 26... communication I / F section, 12... operation input section, 13... display section, 14, 27... memory section, 15, 15a... calculation processing section, 20, 20a... air conditioning system, 21... air conditioning controller, 22... air conditioner, 23-1, 23-2... VAV unit, 24... fan coil unit, 25... temperature sensor, 30... facility management system, 31... facility management device, 32... infrared sensor, 150... data data acquisition unit, 151...zone division unit, 152...heat load calculation unit, 153...supply air parameter calculation unit, 154...supply air temperature calculation unit, 155...supply air volume calculation unit, 156...air conditioning instruction unit, 157...room temperature calculation unit, 158...set temperature determination unit, 280...reception unit, 281...operation amount calculation unit, 282...supply air temperature control unit, 283...air volume calculation unit, 284...air volume control unit, 285...air volume notification unit, 286...FCU control unit, R...space, Z i ...zone, L1, L2, L3...communication lines.

Claims

1. a zone dividing unit configured to change the division of the space by dividing a zone in which a fan coil unit is installed, among predetermined zones that virtually divide the same space to be air-conditioned, into two zones, a zone in which the fan coil unit is not installed and a zone in which the fan coil unit is installed; A data acquisition unit configured to acquire surface temperature data of objects present in each zone after the division change; a heat load calculation unit configured to calculate, for each first zone, a zone heat load required to control air conditioning of the first zone to an indoor set temperature based on the surface temperature data of a first zone among the zones after the classification change, excluding the zone in which the fan coil unit is installed, and data on a known contact area between the first zone and an adjacent zone, and to calculate an air conditioner heat load to be supplied from an air conditioner to a variable air volume unit based on each zone heat load of the first zone; a supply air temperature calculation unit configured to calculate a new value of the supply air set temperature of the air conditioner based on the indoor set temperature of each of the first zones and the air conditioner thermal load; a supply air volume calculation unit configured to calculate, for each of the first zones, a new value of the supply air volume to be supplied to the first zone from a variable air volume unit that receives a supply of conditioned air from the air conditioner, based on a new value of the supply air set temperature, an indoor set temperature of the first zone, and a zone thermal load of the first zone; an air conditioning instruction unit configured to notify an air conditioning controller that controls the air conditioner, the variable air volume unit, and the fan coil unit of a new value of the supply air set temperature and a new value of the supply air volume.

2. 2. The air conditioning control device according to claim 1, a room temperature calculation unit configured to estimate an indoor temperature of each zone for each of the first zones based on the surface temperature data of the first zone, a current supply air temperature setting of the air conditioner, and a current supply air volume to be supplied to the first zone; and a set temperature determination unit configured to determine, for each zone, an indoor set temperature for each of the zones after the zone division change, the set temperature determination unit sets, for a zone where the indoor temperature estimated value calculated by the room temperature calculation unit for the first zone is higher than the cooling set temperature of the first zone, the cooling set temperature of the first zone as the indoor set temperature, for a zone where the indoor temperature estimated value of the first zone is lower than the heating set temperature of the first zone, the heating set temperature of the first zone as the indoor set temperature, for a zone where the indoor temperature measured by a temperature sensor in a second zone in which the fan coil unit is installed is higher than the cooling set temperature of the second zone, the cooling set temperature of the second zone as the indoor set temperature, and for a zone where the indoor temperature of the second zone is lower than the heating set temperature of the second zone, the heating set temperature of the second zone as the indoor set temperature.

3. 3. The air conditioning control device according to claim 2, The set temperature determination unit determines an indoor set temperature for a first zone where the indoor temperature estimated value is equal to or lower than the cooling set temperature of the first zone and equal to or higher than the heating set temperature of the first zone, so that the air conditioner operation mode of the first zone is a blowing mode, and determines an indoor set temperature for a second zone where the indoor temperature estimated value is equal to or lower than the cooling set temperature of the second zone and equal to or higher than the heating set temperature of the second zone, so that the air conditioner operation mode of the second zone is a blowing mode.

4. 4. The air conditioning control device according to claim 3, The set temperature determination unit sets the average value of the surface temperatures of objects present in a zone where the indoor temperature estimated value of the first zone is below the cooling set temperature of the first zone and is equal to or higher than the heating set temperature of the first zone as the indoor set temperature of the first zone, and sets the average value of the surface temperatures of objects present in a zone where the indoor temperature of the second zone is below the cooling set temperature of the second zone and is equal to or higher than the heating set temperature of the second zone as the indoor set temperature of the second zone.

5. 2. The air conditioning control device according to claim 1, The air conditioning control device is characterized in that the heat load calculation unit calculates, for each first zone, an object supply heat amount supplied to the first zone from the surface of an object present in the first zone based on surface temperature data of the first zone, calculates, for each first zone, an adjacent zone supply heat amount supplied from the adjacent zone to the first zone based on the indoor set temperature of the first zone, the indoor set temperature of the adjacent zone, and the contact area data, and calculates the sum of the object supply heat amount and the adjacent zone supply heat amount for each first zone to obtain the zone heat load.

6. 2. The air conditioning control device according to claim 1, The air conditioning control device is characterized in that the supply air temperature calculation unit calculates an average set temperature, which is the average value of the indoor set temperatures of each of the first zones, and calculates a new value of the supply air set temperature based on the average set temperature, the known minimum airflow of the air conditioner, and the air conditioner thermal load.

7. a first step of changing the division of the space by dividing a zone in which a fan coil unit is installed, among predetermined zones that virtually divide the same space to be air-conditioned, into two zones, a zone in which the fan coil unit is not installed and a zone in which the fan coil unit is installed; A second step of acquiring surface temperature data of objects present in each zone after the division change; a third step of calculating, for each of the first zones, a zone heat load required for controlling air conditioning of the first zone to an indoor set temperature based on the surface temperature data of the first zones excluding the zone in which the fan coil unit is installed among the zones after the reclassification and on data of a known contact area between the first zone and an adjacent zone, and calculating an air conditioner heat load to be supplied from an air conditioner to a variable air volume unit based on the zone heat load of each of the first zones; a fourth step of calculating new values ​​of the supply air setpoint temperatures of the air conditioners based on the indoor setpoint temperatures of each of the first zones and the air conditioner thermal loads; a fifth step of calculating, for each of the first zones, a new value of the supply air volume to be supplied to the first zone from a variable air volume unit that receives a supply of conditioned air from the air conditioner, based on the new value of the supply air volume set temperature, the indoor temperature set point of the first zone, and the zone heat load of the first zone; and a sixth step of notifying an air conditioning controller that controls the air conditioner, the variable air volume unit, and the fan coil unit of the new value of the supply air set temperature and the new value of the supply air volume.

8. The air conditioning control method according to claim 7, a seventh step between the second step and the third step, of estimating an indoor temperature of each of the first zones based on the surface temperature data of the first zone, a current supply air temperature setting of the air conditioner, and a current supply air volume to be supplied to the first zone; and an eighth step of determining, for each zone, an indoor set temperature for each of the zones after the division change; the eighth step includes a step of setting the cooling set temperature of the first zone as the indoor set temperature for a zone in which the indoor temperature estimated value for the first zone calculated in the seventh step is higher than the cooling set temperature of the first zone, setting the heating set temperature of the first zone as the indoor set temperature for a zone in which the indoor temperature estimated value for the first zone is lower than the heating set temperature of the first zone, setting the cooling set temperature of the second zone as the indoor set temperature for a zone in which the indoor temperature measured by a temperature sensor in a second zone in which the fan coil unit is installed is higher than the cooling set temperature of the second zone, and setting the heating set temperature of the second zone as the indoor set temperature for a zone in which the indoor temperature of the second zone is lower than the heating set temperature of the second zone.

9. The air conditioning control method according to claim 8, The eighth step of the air conditioning control method includes a step of determining an indoor set temperature for a first zone whose indoor temperature estimated value is equal to or lower than a cooling set temperature for the first zone and equal to or higher than a heating set temperature for the first zone such that the air conditioner operation mode for the first zone is a blowing mode, and determining an indoor set temperature for a second zone whose indoor temperature is equal to or lower than a cooling set temperature for the second zone and equal to or higher than a heating set temperature for the second zone such that the air conditioner operation mode for the second zone is a blowing mode.

10. The air conditioning control method according to claim 9, The eighth step of the air conditioning control method includes a step of setting an average value of surface temperatures of objects present in a zone where the indoor temperature estimated value of the first zone is equal to or lower than the cooling set temperature of the first zone and equal to or higher than the heating set temperature of the first zone as the indoor set temperature of the first zone, and setting an average value of surface temperatures of objects present in a zone where the indoor temperature of the second zone is equal to or lower than the cooling set temperature of the second zone and equal to or higher than the heating set temperature of the second zone as the indoor set temperature of the second zone.

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