JP6972462B2 - Air conditioning control system - Google Patents

Description

The present invention relates to an air conditioning control system that schedule-controls one or more installed air conditioning devices.

As an air conditioner for controlling the schedule, Patent Document 1 creates an operation time command for a heater, an air conditioner, etc. for keeping each room at a predetermined temperature based on a seasonal command corresponding to a seasonal transition determination. It is described that the operating time of the heater, the air conditioner, etc. is adjusted so that the room is maintained at a predetermined temperature by transmitting.

Further, Patent Document 2 describes a schedule control device capable of setting a schedule such as when the operation of the air conditioner starts or ends, and adjusts the set temperature at each set time.

All of the schedule control devices described in Patent Documents 1 and 2 schedule control the start and end of operation of the air conditioner so that the room temperature becomes the set temperature.

Japanese Unexamined Patent Publication No. 2004-028440 Japanese Unexamined Patent Publication No. 2005-337614

However, according to the conventional schedule control device described in Patent Documents 1 and 2, although it is possible to schedule control the room temperature to a set temperature, the total amount of electric power consumed by the air conditioner can be appropriately reduced. It was not possible to expect the optimum energy saving effect. Further, these conventional schedule control devices are devices designed to control the schedule from the stage of manufacturing the air conditioner, and schedule the existing general air conditioner that does not have such a schedule control function. Controls could not be applied.

Therefore, an object of the present invention is to provide an air conditioning control system capable of obtaining an optimum energy saving effect by appropriately controlling a plurality of air conditioning devices on a schedule.

Another object of the present invention is to provide an air conditioning control system capable of schedule control even for a general air conditioning device having no schedule control function.

According to the present invention, the air conditioning control system is provided in at least one indoor unit, at least one outdoor unit connected to at least one indoor unit via a refrigerant circuit, and at least one outdoor unit. To switch the state of the outdoor unit to the first state that does not limit the amount of power used, the second state that limits the amount of power used to a predetermined ratio, or the third state that limits the amount of power used to almost zero. The demand control means of the above and the demand control means of at least one outdoor unit are controlled based on a predetermined schedule, and the power consumption of the at least one outdoor unit is set to the first state, the second state or the third state. It is equipped with a schedule control means for switching and controlling. The schedule control means schedule-controls the demand control means with the control contents set according to the season and the time so that the coefficient of performance COP by the outdoor unit exceeds 1.0.

When the schedule control means controls the demand control means of the outdoor unit according to the season and time, the coefficient of performance COP by the outdoor unit is controlled to exceed 1.0, so that the room temperature is adjusted according to the schedule. In addition to being able to control the set temperature, the total amount of power can be reduced according to the season and time, and the optimum energy saving effect can be obtained.

The schedule control means schedule-controls the demand control means so that the state of the outdoor unit first becomes the first state and then becomes the second state from the morning of winter to the predetermined time in the morning. It is preferable to do so.

The schedule control means schedule-controls the demand control means so that the state of the outdoor unit is first changed to the first state and then changed to the second state from noon to a predetermined time in the afternoon in summer. It is also preferable to do so.

In this case, a plurality of indoor units provided in the same building and a plurality of outdoor units connected to the plurality of indoor units via a refrigerant circuit are provided, and the schedule control means is a plurality of indoor units. The machine and a plurality of outdoor units are divided into a plurality of groups, and the states of the outdoor units of the plurality of groups thus divided are configured to rotate so as to alternately repeat the first state and the second state. It is more preferable to be there.

It is also preferable that the schedule control means schedule-controls the demand control means so that the state of the outdoor unit first becomes the second state and then becomes the third state in spring and autumn.

In this case, a plurality of indoor units provided in the same building and a plurality of outdoor units connected to the plurality of indoor units via a refrigerant circuit are provided, and the schedule control means is a plurality of indoor units. The machine and a plurality of outdoor units are divided into a plurality of groups, and the states of the outdoor units of the plurality of groups thus divided are configured to rotate so as to alternately repeat the second state and the third state. It is more preferable to be there.

It is also preferable that the schedule control means schedule-controls the demand control means so that the state of the outdoor unit becomes the first state on a regular holiday or a holiday.

According to the present invention, the room temperature can be controlled to a set temperature according to the schedule, the total electric energy amount can be reduced according to the season and the time, and the optimum energy saving effect can be obtained. Moreover, it is possible to control the schedule of general air-conditioning equipment that does not have a schedule control function.

It is a block diagram which shows schematic the whole system configuration in one Embodiment of the air-conditioning control system of this invention. It is a figure which shows the flow of the signal between each element in the air-conditioning control system of FIG. It is a figure which shows the relationship between the load factor of the air-conditioning equipment (air conditioner) controlled by the air-conditioning control system of FIG. 1 and COP. It is a flowchart which shows the process flow of schedule control in the air-conditioning control system of FIG. 1 schematically. It is a figure explaining the effect obtained by the air-conditioning control system of FIG. It is a figure which shows the transition of the annual air-conditioning electric energy in the air-conditioning control system of FIG. It is a figure which shows the transition of the air-conditioning electric energy amount and room temperature at the start of winter in the case where the schedule is not controlled and when the schedule is controlled. It is a figure which shows the transition of the air-conditioning electric energy amount and the average load factor at the peak of summer when the schedule is not controlled and when the schedule is controlled by rotation operation. It is a figure which shows the transition of the air-conditioning electric energy amount and the average load factor in spring and autumn when the schedule is not controlled and when the schedule is controlled by rotation operation.

FIG. 1 schematically shows an overall system configuration in one embodiment of the air conditioning control system of the present invention, and FIG. 2 shows a signal flow between each element in the air conditioning control system of the present invention.

As shown in FIG. 1, the air conditioning control system in the present embodiment is installed outdoors with the indoor unit 11 provided in the building 10, and is connected to the indoor unit 11 via the refrigerant circuit 12. It is equipped with an outdoor unit 13. In the illustrated example, a single indoor unit 11 is provided in the building 10, and one air conditioner is configured by the indoor unit 11 and the outdoor unit 13, but a plurality of indoor units are used as a single outdoor unit. It may correspond to the machine. It should be noted that a plurality of indoor units are provided in the building 10 and a plurality of outdoor units corresponding to the indoor units are provided outdoors so that they can be grouped and controlled separately (group control). Is also good. In the present embodiment, as shown in the figure, a plurality of outdoor units other than the outdoor unit 13 are provided, and each outdoor unit has a refrigerant circuit in a single or a plurality of indoor units provided in a building (not shown). Connected via.

Inside the building 10, a temperature sensor 14 for detecting the indoor temperature and a distribution board 15 for the corresponding outdoor unit 13 or an input / output electric wire thereof are attached to measure the electric energy of the outdoor unit 13. A current sensor (CT sensor) 16 for detecting a current and a gateway device (GW device) 17 connected to the temperature sensor 14 and the CT sensor 16 are provided. In the present embodiment, the room temperature information detected by the temperature sensor 14 is configured to be wirelessly transmitted to the GW device 17, and the current information detected by the CT sensor 16 is transmitted to the GW device 17 by wire. It is configured as follows. The GW device 17 is connected to an IPC cloud server 18 which is a server on the cloud using an IPC (interprocess communication) channel via a high-speed wireless line adopting LTE (next-generation high-speed mobile communication standard) or the like. There is. Further, a demand control device 19 for transmitting a contact signal for demand control is connected by wire to a control terminal of a contact control interface (for example, a demand adapter) of a plurality of outdoor units including the outdoor unit 13. The demand control device 19 is connected to the IPC cloud server 18 via a high-speed wireless line that employs LTE or the like, and various contact signals are obtained based on the schedule control information and the time sent from the IPC cloud server 18. Has a computer function to create and output.

In the present embodiment, two demand control devices 19 connected to each other by a LAN are provided, and each demand control device 19 is provided at each of the demand control terminals of a plurality of (up to eight in the present embodiment) outdoor units. It is connected by wire.

As shown in FIG. 2, the schedule control information of the air conditioner control system is registered in advance in the IPC cloud server 18, and further, the initial setting for control such as the target outdoor unit information that specifies the outdoor unit to be controlled. Initial setting information including information and initial setting information for measurement such as information for designating a temperature sensor and a CT sensor to be measured is registered. The IPC cloud server 18 is configured to send control initial setting information such as target outdoor unit information to the demand control device 19 at the time of initial setting, and also to send schedule control information of the outdoor unit every season. Has been done. On the contrary, the demand control device 19 sends the control state information indicating the control state of the controlled air conditioner, that is, the control state of the outdoor unit 13 to the IPC cloud server 18. Further, the IPC cloud server 18 sends the measurement initial setting information such as the target temperature sensor and the CT sensor information to the GW device 17 at the time of the initial setting. The temperature sensor 14 measures the temperature of the initially set measurement target area, that is, the room 10 in the present embodiment, and the measurement result is sent from the GW device 17 to the IPC cloud server 18. The CT sensor measures the current of the air-conditioning device to be measured, which is initially set, and in the present embodiment, the outdoor unit 13, and the measurement result is sent from the GW device 17 to the IPC cloud server 18.

The IPC cloud server 18 includes a plurality of GW devices including the GW device 17, a plurality of demand control devices including the demand control device 19, a wireless communication device for transmitting and receiving information and instructions via a high-speed wireless line, a server main body, and the server body. It has a database that stores the control program of the server and the schedule control information for each air conditioner (outdoor unit), and each outdoor unit is based on the predetermined schedule control information stored in the database. Perform demand control. This demand control controls the schedule for 365 days and 24 hours, and determines the state of the outdoor unit as the first state (100% control, no demand control) that does not limit the amount of power used, and the amount of power used. Switch to the second state (for example, 40% control) that limits the ratio, or the third state (thermo-off) that limits the power consumption to almost zero, and the performance coefficient COP by each outdoor unit exceeds 1.0. The schedule is controlled according to the control contents set according to the season and the time. In the present embodiment, the state of the outdoor unit is controlled to three states of the first state, the second state and the third state, but the number of controlled states is limited to three in this way. It is not something that is done, and it may be four or more. Further, although the second state is controlled by 40%, this ratio may be another value exceeding 0% and less than 100%. Further, the control time of the first state, the second state and the third state is not limited to the time described later.

FIG. 3 shows the relationship between the load factor of the air conditioning equipment (outdoor unit, air conditioner) controlled by the air conditioning control system of the present embodiment and the coefficient of performance COP. By performing demand control of the outdoor unit based on the predetermined schedule control information as described above, the air conditioner is not operated in the inefficient load factor area 30 where the COP is 1.0 or less, but the COP. It can be operated in a high COP area (area 31 with an efficient load factor, an area where the load factor is around 50%) exceeding 1.0.

The coefficient of performance COP (Coefficient Of Performance) is an index indicating the consumption efficiency of the air conditioner, and is a value indicating the amount of electric power used to keep the air at a constant temperature, and is calculated by the following formula.
COP = (rated cooling or heating capacity (kW)) / (rated power consumption (kW))
The higher the COP value, the more efficiently the heating and cooling is performed, and the lower the COP value, the lower the efficiency. Therefore, if the schedule is controlled so as to improve the COP, the amount of power used for air conditioning can be reduced. That is, if the schedule is controlled so that the COP exceeds 1.0, the room temperature can be controlled to the set temperature according to the schedule, and the total electric energy can be reduced according to the season and time, thereby achieving the optimum energy saving effect. It will be possible to obtain.

FIG. 4 schematically shows a processing flow of schedule control in the air conditioning control system of the present embodiment. The server main body of the IPC cloud server 18 executes the schedule control process as shown in the figure according to the installed control program.

First, the air conditioner (outdoor unit) to be controlled is determined (step S1). Next, the database is referred to, and it is determined whether or not the controlled area of the air conditioner is an area for which schedule control should be performed (step S2). When it is determined that the air conditioner is in an area where schedule control is not performed (NO), a signal instructing to perform 100% control (no demand control, contact 0 control) for 24 hours is sent to the demand control of the air conditioner. Transmission to the device using LTE (step S3). As a result, the demand control device outputs a contact 0 signal that turns on the contact 0 of the demand control terminal of the outdoor unit to the control terminal for 24 hours.

If it is determined in step S2 that the air conditioner is in an area where schedule control should be performed (YES), the database and the current date are referred to, and the controlled area of the air conditioner is a regular holiday, a holiday, or a holiday. It is determined whether it is a special holiday (step S4). If it is determined that it is a regular holiday, a holiday, or a special holiday (YES), the process proceeds to step S3 described above, and a signal instructing to perform 100% control (no demand control, contact 0 control) for 24 hours. Is transmitted to the demand control device of the air conditioner using LTE. As a result, the demand control device outputs a contact 0 signal that turns on the contact 0 of the demand control terminal of the outdoor unit to the control terminal for 24 hours.

If it is determined in step S4 that it is not a regular holiday, a holiday, or a special holiday (NO), the database and the current date are referred to, the daily schedule control information of the air conditioner is read out, and the air conditioner is used. It is transmitted to the demand control device of the device using LTE (step S5). As a result, the demand control device creates a contact signal for each time and outputs it to the demand control terminal of the outdoor unit. The demand control device is configured to create a contact signal based on the previously received daily schedule control information and output it to the demand control terminal until the next schedule control information is received.

Table 1 shows an example of schedule control of air conditioning equipment according to the date (season) and time.

For example, if the date is December 10 in winter, this schedule control is performed 100% control (without demand control) for 20 minutes from 00:00 to 10:00 (operation 1), and then 40. % Control (contact 1 control) is performed for 10 minutes (operation 2), and the cycle of operation 1 and operation 2 is repeated every 30 minutes until 10 o'clock. From 10:00 to 24:00, 40% control is performed for 50 minutes (operation 1), 0% control (contact 2 control) is performed for 10 minutes (operation 2), and this operation 1 and operation 2 are performed until 24:00. It is a control that repeats the cycle of.

In this schedule control, the demand control device receives the schedule control information for one day in the corresponding month and day from the IPC cloud server 18, and turns on the contact 0 of the demand control terminal of the outdoor unit from 0:00 to 10:00. The contact 0 signal to be turned on is output for 20 minutes, and then the contact 1 signal for turning on the contact 1 is output for 10 minutes, which is repeated. From 10:00 to 24:00, the contact 1 signal for turning on the contact 1 of the demand control terminal of the outdoor unit is output for 50 minutes, and then the contact 2 signal for turning on the contact 2 is repeatedly output for 10 minutes.

Further, for example, if the month and day is August 1st in summer, 100% control (without demand control) is performed for 20 minutes from 00:00 to 16:00 (operation 1), and then 40% control (operation 1). Contact 1 control) is performed for 10 minutes (operation 2), and the cycle of operation 1 and operation 2 is repeated every 30 minutes until 16:00. From 16:00 to 24:00, 40% control is continuously performed.

In this schedule control, the demand control device receives the schedule control information for one day in the corresponding month and day from the IPC cloud server 18, and turns on the contact 0 of the demand control terminal of the outdoor unit from 0:00 to 16:00. The contact 0 signal to be turned on is output for 20 minutes, and then the contact 1 signal for turning on the contact 1 is output for 10 minutes, which is repeated. From 16:00 to 24:00, it continues to output the contact 1 signal that turns on the contact 1 of the demand control terminal of the outdoor unit.

Further, for example, if the date is April or October in spring or autumn, the time is from 00:00 to 24:00, 40% control (contact 1 control) is performed for 40 minutes (operation 1), and then 0%. Control (contact 2 control) is performed for 20 minutes (operation 2), and the cycle of operation 1 and operation 2 is repeated every hour for 24 hours.

In this schedule control, the demand control device receives the schedule control information for one day in the corresponding month and day from the IPC cloud server 18, and turns on the contact 1 of the demand control terminal of the outdoor unit from 0:00 to 24:00. The contact 1 signal is output for 40 minutes, and then the contact 2 signal for turning on the contact 2 is repeatedly output for 20 minutes.

After that, the IPC cloud server 18 determines whether or not the schedule control has been performed for all the air-conditioning devices (step S6), and if it determines that the schedule control has not been performed (NO), returns to step S1 and repeats the above process. If it is determined in step S6 that the schedule control has been performed for all the air conditioning devices (YES), the schedule control process is terminated.

By performing such schedule control, the effects described below can be obtained.
(1) Rise of winter From December 1st to March 31st, especially from 07:00 to 10:00 (in stores, companies, etc., the time may differ depending on the business hours), contact 0 (100% control) is set. The cycle of contact 1 (40% control) is repeated for 20 minutes and 10 minutes, and normal control is performed after 10 o'clock. At the start of winter, the difference between the outside air temperature and the required indoor air temperature is often large, and the amount of heat is required until heat is stored. Therefore, at the start of winter, heat storage is promoted as a minimum demand control. After that, by starting the normal control from a predetermined time (10 o'clock in this example), it is possible to obtain an energy saving effect while maintaining comfort.
(2) Summer peak From July 1st to September 30th, especially from 12:00 to 16:00, the cycle of contact 0 (100% control) for 20 minutes and contact 1 (40% control) for 10 minutes is repeated. Since the outside temperature rises during the peak of summer, the temperature rise is suppressed as a minimum demand control during this peak, and normal control is performed outside the peak to obtain an energy saving effect while maintaining comfort. be able to.
(3) Spring and autumn (off-season)
Contact 1 (40% control) for 40 minutes, Contact 2 (0% control, thermo-off) 20 for all days (24 hours) from April 1st to June 30th and October 1st to November 30th. Repeat the minute cycle. Since the load factor of the air conditioner is low and the COP decreases during the off-season in spring and autumn, control including thermo-off is performed during this off-season, and rotation operation is performed especially when multiple air conditioners are installed in the room. As a result, it is possible to obtain an energy saving effect while maintaining comfort.
(4) Regular holidays, holidays, or special holidays Since air conditioning is basically not performed on this day, energy saving effect can be obtained by not performing demand control with contact 0 (100% control) for 24 hours. Operate by controlling the temperature of the air conditioner itself only when necessary.

FIG. 5 explains the effect obtained by the air conditioning control system of the present embodiment, and shows that the excess air conditioning power can be reduced by performing the schedule control. That is, when the amount of air conditioning power before control is controlled by, for example, 50%, the broken line portion above 50% is reduced, and the COP below 50% is further improved.

FIG. 6 shows the results of actually measuring the transition of the annual air-conditioning power amount in the air-conditioning control system of the present embodiment, and the horizontal axis represents the month and day, and the vertical axis represents the air-conditioning power amount. As shown in the figure, the amount of air-conditioning power is considerably large on average in winter 60 from January to March, and its peak is in the morning. In the summer 61 from July to August, the amount of air-conditioning power is large on average, and its peak is in the afternoon. In spring 62 from April to May and autumn 63 in October, air conditioning is not used much, and the load factor is low because the amount of air conditioning power is low even when using it.

FIG. 7 shows changes in the amount of air-conditioning power and the room temperature at the start of winter when the schedule is not controlled and when the schedule is controlled. In the figure, the horizontal axis represents time, and the vertical axis represents air conditioning electric energy and room temperature. Further, a is the amount of air-conditioning power when demand control is performed so that the room temperature is within the range of 17 ° C to 28 ° C of the Industrial Hygiene Safety Law without schedule control, b is the room temperature in that case, and c is 00: 00- When the schedule is controlled by 100% control at 10:00 and 40% control from 10:00 to 24:00, and demand control is performed so that the room temperature is within the range of 17 ° C to 28 ° C of the Industrial Hygiene Safety Law. The amount of air-conditioning power and d represent the room temperature in that case.

When the schedule was not controlled, the room temperature b became 17.1 ° C. at 08:00, which was within the room temperature range of the Industrial Safety and Health Act, and 40% control was started. When the schedule was not controlled in this way, the room temperature b was difficult to rise because the control was 40%, and the temperature did not reach 20 ° C. in the morning. It was 14:00 when the temperature reached 20 ° C. On the other hand, when the schedule is controlled, the room temperature d is 17.5 ° C. at 08:00. Further, at 09:00, the room temperature d was 20.1 ° C. when the schedule was controlled, but the room temperature b was 17.2 ° C. when the schedule was not controlled. At 10:00, the room temperature d was 21.6 ° C. when the schedule was controlled, but the room temperature b was 17.4 ° C. when the schedule was not controlled. When the schedule is controlled, it will be 40% control after 10:00.

FIG. 8 shows the transition of the air conditioning power amount and the average load factor at the peak of summer when the schedule is not controlled and the schedule is controlled by the rotation operation. In the figure, the horizontal axis represents the time, and the vertical axis represents the air conditioning power amount and the average load factor. Further, e is the average load factor when the schedule is not controlled, and f is one group when the air conditioning equipment is divided into two groups and the schedule is controlled by rotation operation at 60-minute intervals of 100% control and 40% control. It represents the amount of air conditioning power of.

When the schedule is not controlled, the average load factor e is constant at about 30% throughout the day. On the other hand, when a plurality of air conditioners are divided into two groups and schedule control is performed in which 100% control and 40% control are rotated at intervals of 60 minutes, the air conditioning power amount f of one group is average. The load factor has increased and the energy saving effect has improved. It was confirmed that the average load factor increases and the energy saving effect is improved even if 100% control and 40% control are alternately operated without rotation operation.

FIG. 9 shows changes in the amount of air conditioning power and the average load factor in spring and autumn when the schedule is not controlled and when the schedule is controlled by rotation operation. In the figure, the horizontal axis represents the time, and the vertical axis represents the air conditioning power amount and the average load factor. Further, g is the average load factor when the schedule is not controlled, and h and i are the cases where the air conditioner is divided into two groups and the schedule is controlled by rotation operation at 60-minute intervals of 100% control and 40% control. It represents the amount of air conditioning power for each of the two groups.

When the schedule is not controlled, the average load factor g is constant at about 15% throughout the day. On the other hand, when a plurality of air-conditioning devices are divided into two groups and schedule control is performed in which 40% control and 0% control (thermo-off) are rotated at 30-minute intervals, the air-conditioning power amount h of the two groups is performed. In and i, the average load factor increased and the energy saving effect improved. It was confirmed that the average load factor increases and the energy saving effect is improved even if the alternating operation of 40% control and 0% control is performed without the rotation operation.

In the air conditioning control system of the present invention, if the IPC cloud server 18 receives the room temperature information detected by the temperature sensor 14 via the GW device 17 and the room temperature is outside the specified temperature range (for example, 17 ° C to 28 ° C), The demand control based on the schedule may be forcibly released, and the demand control may be restarted when the room temperature returns to the specified temperature range.

In the schedule control described above, the IPC cloud server 18 sends the schedule control information for one day in the corresponding month and day to the demand control device, and the demand control device is individually based on the schedule control information for one day. Demand control is performed by creating a contact signal. According to such control, the amount of communication between the IPC cloud server 18 and the demand control device is reduced, and the load on the LTE wireless line can be reduced. However, in the air conditioning control system of the present invention, the IPC cloud server 18 creates individual contact signals according to the schedule control information for one day, and transmits the contact signals to the demand control device for demand control. It may be configured as follows.

All of the above-described embodiments are illustrative and not limited to the present invention, and the present invention can be carried out in various other modifications and modifications. Therefore, the scope of the present invention is defined only by the scope of claims and the equivalent scope thereof.

10 Building 11 Indoor unit 12 Refrigerant circuit 13 Outdoor unit 14 Temperature sensor 15 Distribution board 16 CT sensor 17 GW device 18 IPC cloud server 19 Demand control device

Claims (7)

It is provided in each of at least one indoor unit provided indoors, at least one outdoor unit provided outdoors and connected to the at least one indoor unit via a refrigerant circuit, and at least one outdoor unit. To switch the state of the outdoor unit to the first state that does not limit the amount of power used, the second state that limits the amount of power used to a predetermined ratio, or the third state that limits the amount of power used to almost zero. The demand control means of the at least one outdoor unit is controlled based on the demand control means of the above and the demand control means of the at least one outdoor unit, and the power consumption of the at least one outdoor unit is controlled by the first state and the second state. Alternatively, it is provided with a schedule control means for switching to and controlling the third state, and a temperature sensor provided separately from the indoor unit and the outdoor unit to detect the indoor temperature .
The schedule control means is configured to schedule control the demand control means with control contents set according to the season and time so that the coefficient of performance COP by the outdoor unit exceeds 1.0 .
The demand control means cancels the demand control based on the schedule if the temperature in the room detected by the temperature sensor is out of the specified temperature range, and demands when the temperature in the room returns to the specified temperature range. An air conditioning control system characterized by being configured to resume control. The schedule control means controls the demand so that the state of the outdoor unit first changes to the first state from the morning of winter to a predetermined time in the morning, and then changes to the second state. The air conditioning control system according to claim 1, wherein the means are scheduled and controlled. The schedule control means controls the demand so that the state of the outdoor unit first changes to the first state from noon to a predetermined time in the afternoon, and then changes to the second state. The air conditioning control system according to claim 1 or 2, wherein the means are scheduled and controlled. A plurality of indoor units provided in the same building and a plurality of outdoor units connected to the plurality of indoor units via a refrigerant circuit are provided, and the schedule control means is the plurality of indoor units. The machine and the plurality of outdoor units are divided into a plurality of groups, and the state of the outdoor units of the divided groups is configured to rotate so as to alternately repeat the first state and the second state. The air conditioning control system according to claim 3, wherein the air conditioning control system is characterized by the above. The schedule control means schedule-controls the demand control means so that the state of the outdoor unit first becomes the second state and then becomes the third state in spring and autumn. The air conditioning control system according to any one of claims 1 to 4, wherein the air conditioning control system is characterized by the above. A plurality of indoor units provided in the same building and a plurality of outdoor units connected to the plurality of indoor units via a refrigerant circuit are provided, and the schedule control means is the plurality of indoor units. The machine and the plurality of outdoor units are divided into a plurality of groups, and the state of the outdoor units of the divided groups is configured to rotate so as to alternately repeat the second state and the third state. The air conditioning control system according to claim 5, wherein the air conditioning control system is characterized by the above. Any of claims 1 to 6, wherein the schedule control means schedule-controls the demand control means so that the state of the outdoor unit becomes the first state on a regular holiday or a holiday. The air conditioning control system according to item 1.

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