WO2024057410A1

WO2024057410A1 - Air conditioning control device and air conditioning control method

Info

Publication number: WO2024057410A1
Application number: PCT/JP2022/034248
Authority: WO
Inventors: 智祐成井; 利宏妻鹿; 冬樹佐藤; 憲幸長廣; 莉沙村上; 晋一郎大谷; 裕希川野
Original assignee: 三菱電機ビルソリューションズ株式会社; 三菱電機株式会社
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2024-03-21

Abstract

This air conditioning control device comprises: a control level setting unit (3) that, on the basis of the amount of change in the intake temperature of an air conditioner in a given time period immediately after the air conditioner has stopped, sets an energy conservation control level of the air conditioner; and an energy conservation control unit (5) that, on the basis of the energy conservation control level, executes energy conservation control in the air conditioner.

Description

Air conditioning control device and air conditioning control method

The present disclosure relates to an air conditioning control device and an air conditioning control method.

In recent years, due to increasing interest in global warming and reducing environmental impact, there is an increasing need for energy conservation in building equipment. In particular, air conditioning, which consumes most of the electricity in building equipment, requires efficient energy conservation. Things to consider when saving energy in air conditioning include the comfort of the people in the room, in addition to the amount of electricity saved. Patent Document 1 discloses that the energy-saving air conditioning control settings (room temperature settings, humidity settings, air volume settings) are adjusted so that the PMW (Predicted Mean Vote), which is an indoor thermal comfort index, is within a comfortable range. It has been decided that it will fit.

Japanese Patent Application Publication No. 9-217953

To calculate PMV, it is necessary to understand the indoor environment, so multiple environmental measurement devices such as a thermometer, average radiation thermometer, air velocity meter, and hygrometer must be installed indoors. However, there are few office buildings in which multiple measuring devices are installed and managed in every room, and it is difficult to determine air conditioning control settings that realize energy savings in consideration of PMV in all office buildings.

Therefore, an object of the present disclosure is to provide an air conditioning control device and an air conditioning control method that are capable of energy-saving control that suppresses deterioration in comfort even in buildings where multiple environmental measuring instruments are not installed.

An air conditioning control device that controls an air conditioning device according to the present disclosure includes a control level setting unit that sets an energy saving control level of the air conditioning device based on the amount of change in the suction temperature of the air conditioning device for a certain period of time immediately after the air conditioning device is stopped; and an energy saving control unit that executes energy saving control of air conditioning equipment based on the energy saving control level.

An air conditioning control method for controlling an air conditioner according to the present disclosure includes the steps of setting an energy saving control level of the air conditioner based on the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after stopping the air conditioner; and performing energy saving control of air conditioning equipment based on the above.

According to the present disclosure, it is possible to perform energy saving control that suppresses a decrease in comfort even in a building where multiple environmental measuring instruments are not installed.

1 is a diagram showing a configuration of an air conditioning control device 100 according to a first embodiment. 3 is a flowchart showing a processing procedure of the air conditioning control device 100 according to the first embodiment. FIG. 3 is a diagram showing the configuration of an air conditioning control device 100A according to a second embodiment. 10 is a flowchart showing a processing procedure of an air conditioning control device 100A according to a second embodiment. 10 is a diagram showing the configuration of an air conditioning control device 100B according to a third embodiment. FIG. 10 is a flowchart showing a processing procedure of air conditioning control device 100B of Embodiment 3. It is a figure showing the composition of air conditioning control device 100C of Embodiment 4. It is a flowchart showing the processing procedure of 100C of air conditioning control apparatuses of Embodiment 4. It is a figure showing the composition of air conditioning control device 100D of Embodiment 5. 10 is a flowchart showing a processing procedure of an air conditioning control device 100D according to a fifth embodiment. 1 is a diagram showing the configuration of an air conditioning system 1000 according to an embodiment.

Embodiment 1.
In this embodiment, the air conditioning control device sets the energy saving control level based on the amount of change in the suction temperature of the air conditioning equipment for a certain period of time immediately after the air conditioning equipment is stopped. For example, a room in which the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped can be determined to be a room with low heat insulation. When air conditioning equipment is operated in an energy-saving manner in a room with poor insulation, comfort tends to deteriorate. Therefore, the air conditioning control device sets a weak energy saving control level.

FIG. 1 is a diagram showing the configuration of an air conditioning control device 100 according to the first embodiment.
The air conditioning control device 100 includes an air conditioning temperature information storage section 1, an air conditioning temperature change amount calculation section 2, a control level setting section 3, and an energy saving control section 5.

The air conditioning temperature information storage unit 1 stores information representing the suction temperature of the air conditioning equipment for each hour. The suction temperature of the air conditioner can be collected by a temperature sensor installed at the suction port of the air conditioner.

The air conditioner temperature change amount calculation unit 2 calculates the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. For example, the air conditioning temperature change amount calculation unit 2 calculates the following five change amounts ΔT(1), ΔT(2), ΔT(3), ΔT(4), and ΔT(5).

T0 is the temperature immediately after the air conditioner stops, T3 is the suction temperature of the air conditioner 3 minutes after the air conditioner stops, T6 is the suction temperature of the air conditioner 6 minutes after the air conditioner stops, and 9 is the temperature after the air conditioner stops. The suction temperature of the air conditioner after 1 minute is T9, the suction temperature of the air conditioner 15 minutes after the air conditioner is stopped is T15, and the suction temperature of the air conditioner 30 minutes after the air conditioner is stopped is T30.

ΔT(1)=(T3-T0)/3...(1)
ΔT(2)=(T6-T0)/6...(2)
ΔT(3)=(T9-T0)/9...(3)
ΔT(4)=(T15-T0)/15...(4)
ΔT(5)=(T30-T0)/30...(5)
The control level setting unit 3 sets the energy saving control level of the air conditioner based on the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. For example, when ΔT(1) to ΔT(i) are less than the threshold TH and ΔT(i+1) is greater than or equal to the threshold TH, the control level setting unit 3 sets the energy saving control level of the air conditioner to level L(i). Set to .

At level L (1), the air conditioner stops for 0 minutes in 30 minutes. At level L(2), the air conditioner stops for 3 minutes in 30 minutes. That is, out of 30 minutes, the air conditioning operation time is 27 minutes, and the air conditioning equipment stop time is 3 minutes. At level L (3), the air conditioner stops for 6 minutes in 30 minutes. That is, out of 30 minutes, the air conditioning operation time is 24 minutes, and the air conditioning equipment stop time is 6 minutes. At level L (4), the air conditioner stops for 9 minutes in 30 minutes. That is, out of 30 minutes, the air conditioning operation time is 21 minutes, and the air conditioning equipment is stopped for 9 minutes. At level L (5), the air conditioning equipment stops for 15 minutes in 30 minutes. That is, out of 30 minutes, the air conditioning operation time is 15 minutes, and the air conditioning equipment is stopped for 15 minutes. At level L (6), the air conditioning equipment stops for 30 minutes. That is, out of 30 minutes, the air conditioning operation time is 0 minutes, and the air conditioning equipment stop time is 30 minutes.

For example, when ΔT(1)<TH, ΔT(2)<TH, and ΔT(3)≧TH, the energy saving control level of the air conditioner is set to level L(2).

The threshold TH can be set, for example, to the following THs in the summer, and to the following THw in the winter. THs and THw are as follows when the room temperature immediately after the air conditioner is stopped is Tx, the temperature in the comfortable range in summer is Ts (e.g. 26°C), and the temperature in the comfortable range in winter is Tw (e.g. 22°C). It is expressed by the formula. However, |A| represents the absolute value of A.

THs=|Tx-Ts|...(6)
THw=|Tx−Tw|...(7)
The temperature in the comfort range may be calculated based on PMV. For example, the temperature corresponding to 0.5<PMV<0.5 may be set as the temperature in the comfortable range.

The energy saving control unit 5 can perform energy saving control of air conditioning equipment based on the energy saving control level. For example, the higher the energy saving control level is, the longer the energy saving control unit 5 increases the time during which the air conditioner is stopped within a predetermined period of time (for example, 30 minutes). Specifically, the energy saving control unit 5 controls the energy saving control level to 30 when the energy saving control level is level L(1), L(2), L(3), L(4), L(5), L(6). The stop time of the air conditioner in minutes can be set to 0 minutes, 3 minutes, 6 minutes, 9 minutes, 15 minutes, and 30 minutes.

The energy saving control unit 5 may realize energy saving according to a long-term plan based on the set energy saving control level as follows.

The energy saving control unit 5 calculates the target power consumption of the target air conditioner per day when energy saving control of the target air conditioner is executed for a certain period of time at the set energy saving control level. More specifically, the energy saving control unit 5 calculates the target power consumption of the target air conditioner for a certain period when energy saving control of the target air conditioner is executed for a certain period (for example, one year) at the set energy saving control level. calculate. The energy saving control unit 5 calculates the target power consumption of the target air conditioner per day from the target power consumption of the target air conditioner for a certain period.

For example, the energy saving control unit 5 sets the power consumption of the target air conditioner last year as Pp, the coefficient for the energy saving control level L(k) of the air conditioner as a(k), and the number of operating days of the target air conditioner in one year as ND. , when the set energy saving control level of the air conditioner is L(i), according to the following formula, the target power reduction ΔPc of the target air conditioner for one year, the target power consumption Pt of the target air conditioner for one year, The target power consumption Pd of the target air conditioner per day is calculated.

a(k)<a(k+1)...(8)
ΔPc=Pp×a(i)...(9)
Pt=Pp-ΔPc=Pp{1-a(i)}...(10)
Pd=Pt/ND...(11)
The energy saving control unit 5 operates the target air conditioner without energy saving control, and when the power consumption of the target air conditioner on that day is expected to exceed the target power consumption Pd of the target air conditioner per day, Then, the target air conditioner is operated under energy-saving control at the set energy-saving control level L(i). By operating the air conditioner for one year in this manner, the target power reduction ΔPc of the target air conditioner for one year can be achieved.

A case where the power consumption of the target air conditioner on that day is expected to exceed the target power consumption Pd of the target air conditioner per day means, for example, if the power consumption of the target air conditioner on that day is expected to exceed the target power consumption Pd of the target air conditioner per day. The case where the target power consumption Pd is expected to be exceeded is a case where the difference dP between the power consumption of the target air conditioner and the target power consumption Pd on that day is less than or equal to a threshold value. This threshold value may be changed based on the current time.

FIG. 2 is a flowchart showing the processing procedure of the air conditioning control device 100 of the first embodiment.

In step S101, if it is necessary to set or change the energy saving control level, the process proceeds to step S102.

In step S102, the air conditioning temperature information storage unit 1 accumulates suction temperature information of the air conditioning equipment sent from a temperature sensor placed at the suction port of the air conditioning equipment.

In step S103, the air conditioner temperature change amount calculation unit 2 calculates the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped.

In step S104, the control level setting unit 3 sets the energy saving control level.

In step S105, the energy saving control unit 5 calculates the target power consumption Pd of the target air conditioner per day when the energy saving control level set in step S104 is applied.

In step S106, the energy saving control unit 5 operates the target air conditioner without energy saving control, and if the power consumption of the target air conditioner on that day is expected to exceed the target power consumption Pd of the target air conditioner per day. Then, the target air conditioner is operated under energy saving control at the energy saving control level set in step S104.

According to this embodiment, by setting the energy saving control level using information on the intake temperature of air conditioners, even in offices where PWV cannot be calculated due to lack of multiple environmental measuring instruments, energy saving control reduces comfort. It is possible to prevent this from happening.

Embodiment 2.
In this embodiment, the air conditioning control device sets the energy saving control level of the air conditioning equipment based on the amount of change in the intake temperature of the air conditioning equipment as well as information on the average occupancy time of the room in which the air conditioning equipment is installed. . For example, if a person stays in a room for a short time, it can be assumed that energy saving control will reduce the impact of deterioration of comfort on people, so it is considered that there is no problem even if a strong energy saving control level is set. The average occupancy time in a room can be calculated based on the entry/exit history information of the entry/exit management system.

FIG. 3 is a diagram showing the configuration of an air conditioning control device 100A according to the second embodiment. The air conditioning control device 100A of the second embodiment differs from the air conditioning control device 100 of the first embodiment in the following points.

The air conditioning control device 100A further includes an entry/exit information storage section 6 and an occupancy time calculation section 7. The air conditioning control device 100A includes a control level setting section 3A instead of the control level setting section 3 of the first embodiment.

The entry/exit information storage unit 6 stores entry/exit information representing the history of entry/exit of each person in each room in the building.

The room occupancy time calculation unit 7 calculates the average occupancy time of the room in which the target air conditioner is installed, based on the entry/exit history information stored in the entry/exit information storage unit 6. If there are three users of room R, A, B, and C, the one-year average of A's time in the room on working days and the one-year average of B's time in the room on working days. and the one-year average value of the time spent in the room on work days for C can be set as the average time spent in the room R. Even when a person temporarily leaves the room, the occupancy state does not end, and the occupancy time can continue. If you return to the room after leaving the room for more than the specified time, the total time you spent in the room before leaving the room and the time you spent in the room after returning will be counted as the total time on that working day. This can be the time spent in the room.

Similarly to the first embodiment, the control level setting unit 3A specifies the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. The control level setting unit 3A modifies the specified energy saving control level based on the average occupancy time of the room in which the target air conditioner is installed.

If the average occupancy time in the room is less than a threshold value (for example, 30 minutes), the control level setting unit 3A sets the control level setting unit 3A to set the level of comfort for a certain period of time immediately after stopping the air conditioner, since it is considered that there is no need to strictly achieve comfort when the average occupancy time in the room is less than a threshold value (for example, 30 minutes). The energy saving control level of the air conditioner is set to a level one step higher than the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(3).

The control level setting unit 3A determines that if the average time spent in the room exceeds a threshold (for example, 30 minutes), there is a high possibility that long-term work will be performed and it is necessary to achieve comfort. Therefore, the energy saving control level of the air conditioner is set to the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is maintained at L(2).

FIG. 4 is a flowchart showing the processing procedure of the air conditioning control device 100A of the second embodiment.

Steps S201 to S203 and S207 to S208 are the same as steps S101 to S103 and S105 to S106 in FIG. 2, so the description will not be repeated.

In step S204, the entry/exit information storage unit 6 stores entry/exit information representing the entry/exit history of each person in each room in the building.

In step S205, the occupancy time calculation unit 7 calculates the average occupancy time TX in the room where the target air conditioner is installed, based on the entry/exit information stored in the entry/exit information storage unit 6.

In step S206, the control level setting unit 3A determines the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped, as in the first embodiment.

The control level setting unit 3A sets an energy saving control level L(i+1) which is one step higher than the energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner when the average occupancy time TX is less than the threshold value. , set the energy saving control level for air conditioning equipment. When the average occupancy time TX exceeds the threshold, the control level setting unit 3A sets the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner as the energy saving control level of the air conditioner.

According to the present embodiment, by increasing the number of judgment materials for setting the energy saving control level, it is possible to make a more appropriate judgment that takes into consideration the degree of influence of deterioration of comfort.

Embodiment 3.
In this embodiment, the air conditioning control device sets the energy saving control level of the air conditioning equipment based on information on the annual usage rate of the room in addition to the amount of change in the intake temperature of the air conditioning equipment. For example, if the annual usage rate of a room is low, it can be assumed that the effect of energy saving on deterioration of comfort for people will be small, so it is considered that there is no problem in setting a strong energy saving control level. The annual usage rate of a room can be calculated based on operating information of building equipment (air conditioning equipment and lighting equipment).

FIG. 5 is a diagram showing the configuration of an air conditioning control device 100B according to the third embodiment. The air conditioning control device 100B of the third embodiment differs from the air conditioning control device 100 of the first embodiment in the following points.

The air conditioning control device 100B further includes an equipment operation information storage section 8 and a usage rate calculation section 9. The air conditioning control device 100B includes a control level setting section 3B instead of the control level setting section 3 of the first embodiment.

The equipment operation information storage unit 8 stores equipment operation information representing the operation history of building equipment (air conditioners and lighting devices) in each room in the building.

The usage rate calculation unit 9 calculates the usage rate of the room in which the target air conditioner is installed, based on the equipment operation information stored in the equipment operation information storage unit 8.

For example, the usage rate calculation unit 9 calculates the annual usage rate of the room in which the target air conditioner is installed. The annual usage rate of the room where the target air conditioning equipment is installed is the value obtained by dividing the annual usage time T1 of the room where the target air conditioning equipment is installed by the annual usage time T2 of the building in which the room is included. It is. The annual usage time T1 of the room where the target air conditioner is installed is the period during which the equipment (air conditioner and/or lighting equipment) was operated in the room where the target air conditioner is installed. It's time. The annual usage time T2 of a building is the time during which equipment (air conditioning equipment and/or lighting equipment) was operating in any room in the building in one year.

Similarly to Embodiment 1, the control level setting unit 3B specifies the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. The control level setting unit 3 modifies the specified energy saving control level based on the usage rate of the room in which the target air conditioner is installed.

The control level setting unit 3B determines that when the usage rate of a room is below a threshold value (for example, 50%), the room is not used much, so increasing the energy saving rate will have a small impact on the residents when considering the building as a whole. Since it is considered that there is no need to strictly achieve comfort, it is necessary to set the air conditioner to a level one level higher than the energy saving control level that corresponds to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. Set the energy saving control level. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(3).

The control level setting unit 3B determines that when the usage rate of the room exceeds a threshold (for example, 50%), it is likely that long hours of work will be performed and it is necessary to achieve comfort. The energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is set as the energy saving control level of the air conditioner. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is maintained at L(2).

FIG. 6 is a flowchart showing the processing procedure of the air conditioning control device 100B of the third embodiment.

Steps S301 to S303 and S307 to S308 are similar to steps S101 to S103 and S105 to S106 in FIG. 2, so the description will not be repeated.

In step S304, the equipment operation information storage unit 8 stores the operation information of the equipment (air conditioning equipment and lighting equipment) in the building.

In step S305, the usage rate calculation unit 9 calculates the usage rate R1 of the room in which the target air conditioner is installed, based on the operation information stored in the equipment operation information storage unit 8.

In step S306, the control level setting unit 3B determines the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped, as in the first embodiment.

When the usage rate R1 of the room in which the target air conditioner is installed is below the threshold, the control level setting unit 3B sets the energy saving control level one step higher than the energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner. The high energy saving control level L(i+1) is set as the energy saving control level of the air conditioner. When the usage rate R1 of the room in which the target air conditioner is installed exceeds the threshold, the control level setting unit 3B sets the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner to the air conditioner. energy saving control level.

Embodiment 4.
In this embodiment, the air conditioning control device sets the energy saving control level of the air conditioning equipment based on the amount of change in the suction temperature of the air conditioning equipment as well as information on the gender ratio of people in the room. Air conditioning control equipment generates a lot of heat when a high percentage of men are in the room, so it can be assumed that the impact of deteriorating comfort will be greater in the summer, so we set a weak energy-saving control level and reduce the comfort in the winter. Since it can be assumed that the impact of The male-female ratio of people in the room can be calculated based on attribute information of people in the room included in entry/exit history information of the entry/exit management system.

FIG. 7 is a diagram showing the configuration of an air conditioning control device 100C according to the fourth embodiment. The air conditioning control device 100C of the fourth embodiment differs from the air conditioning control device 100 of the first embodiment in the following points.

The air conditioning control device 100C further includes an entrance/exit information storage section 6C and a gender ratio calculation section 10. The air conditioning control device 100C includes a control level setting section 3C instead of the control level setting section 3 of the first embodiment.

The entry/exit information storage unit 6C stores entry/exit history of each person in each room in the building and entry/exit information indicating each person's gender.

The gender ratio calculation unit 10 calculates the gender ratio of people who use the room where the target air conditioner is installed, based on the entry/exit information stored in the entry/exit information storage unit 6C.

Similarly to the first embodiment, the control level setting unit 3C specifies the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after stopping the air conditioner, and sets the specified energy saving control level. Modifications will be made based on the gender ratio of the people using the room where the target air conditioner is installed.

The control level setting unit 3C stops the air conditioning equipment when the ratio of men using the room is higher than the ratio of women, because the amount of heat generated from the human body is large, and it is thought that comfort will deteriorate in the summer. The summer energy saving control level of the air conditioner is set to a level one step lower than the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(1). The control level setting unit 3C sets the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped when the proportion of men using the room is higher than the proportion of women using the room. Set the energy saving control level for equipment outside of summer. Here, summer can be defined as three months of June, July, and August, for example.

The control level setting unit 3C stops the air conditioning equipment when the proportion of women using the room is higher than the proportion of men, because the amount of heat generated from the human body is small, and it is thought that comfort will deteriorate in winter. The winter energy saving control level of the air conditioner is set to a level one level lower than the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(1). The control level setting unit 3C sets the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped, when the proportion of women using the room is higher than the proportion of men. Set the energy saving control level for equipment outside of winter. Here, the winter season can be defined as, for example, three months of December, January, and February.

The control level setting unit 3C sets the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped when the proportion of women and men who use the room is equal. Set the equipment to the energy saving control level for all seasons.

In this embodiment, the energy saving control unit 5C sets the power consumption of the target air conditioner in the last year to Pp, the coefficient for the energy saving control level L(k) of the air conditioner to a(k), and the power consumption of the target air conditioner in one year. The number of operating days is ND, the energy saving control level of the air conditioner set in summer and winter is L(i), the energy saving control level of the air conditioner set in summer is L(s), and the energy saving control level of the air conditioner set in winter is L(s). When the energy saving control level is L(w), the target air conditioner's target power reduction ΔPc for one year, the target power consumption Pt of the target air conditioner's per day, and the target air conditioner's target power consumption per day are calculated according to the following formula. The target power consumption Pd is calculated.

a(k)<a(k+1)...(8)
ΔPc=(1/2)×Pp×a(i)+(1/4)×Pp×a(s)+(1/4)Pp×a(w)...(9A)
Pt=Pp-ΔPc...(10)
Pd=Pt/ND...(11)
FIG. 8 is a flowchart showing the processing procedure of the air conditioning control device 100C according to the fourth embodiment.

Steps S401 to S403 and S408 are similar to steps S101 to S103 and S106 in FIG. 2, so the description will not be repeated.

In step S404, the entry/exit information storage unit 6C stores the entry/exit history of each person in each room in the building and entry/exit information indicating the gender of each person.

In step S405, the male-female ratio calculation unit 10 calculates the male-female ratio of people using the room where the target air conditioner is installed, based on the entry/exit information stored in the entry/exit information storage unit 6C.

In step S406, the control level setting unit 3C determines the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped, as in the first embodiment.

The control level setting unit 3C sets an energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner when the proportion of men who use the room where the target air conditioner is installed is higher than the proportion of women. The energy saving control level L(i-1), which is one step lower than the above, is set as the energy saving control level for the air conditioner in the summer.

The control level setting unit 3C sets an energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner when the proportion of women who use the room where the target air conditioner is installed is higher than the proportion of men. The energy saving control level L(i-1), which is one step lower than the above, is set as the energy saving control level for the air conditioner in winter.

The control level setting unit 3C determines the energy saving control level of the air conditioner outside of summer when the proportion of men who use the room where the target air conditioner is installed is higher than the ratio of women, and the level of energy saving control when the target air conditioner is installed. The energy saving control level of air conditioners outside of winter when the proportion of women using the room is higher than the proportion of men, and the ratio of men and women using the room where the target air conditioner is installed. The energy saving control level of the air conditioner in all seasons when the values are equal is set to the energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner.

In step S407, the energy saving control unit 5C calculates the target power consumption Pd of the target air conditioner per day when applying the energy saving control level set in step S406.

According to the present embodiment, by considering the degree of influence of deterioration of comfort due to differences in the attributes of the occupants, it is possible to set an appropriate energy saving control level for each room depending on the season.

Embodiment 5.
In this embodiment, the air conditioning control device sets the energy saving control level of the air conditioning equipment based on the amount of change in the suction temperature of the air conditioning equipment as well as the requests of the people using the room. Requests from people using the room can be collected through periodic questionnaires.

FIG. 9 is a diagram showing the configuration of an air conditioning control device 100D according to the fifth embodiment. The air conditioning control device 100D of the fifth embodiment differs from the air conditioning control device 100 of the first embodiment in the following points.

The air conditioning control device 100D further includes a request storage section 11 and an evaluation result extraction section 13. The air conditioning control device 100D includes a control level setting section 3D instead of the control level setting section 3 of the first embodiment.

The request storage unit 11 stores the requests regarding comfort of each person who uses the room where the target air conditioner is installed. The request storage unit 11 stores periodic questionnaire results as requests. The questionnaire results include a multi-level evaluation of comfort (comfortable, somewhat comfortable, neutral, somewhat uncomfortable, uncomfortable).

The evaluation result extraction unit 13 extracts evaluation results regarding the comfort of the room in which the air conditioner is installed, based on the questionnaire results stored in the request storage unit 11. If the request storage unit 11 stores the questionnaire results of a plurality of people, the evaluation result extraction unit 13 can select the evaluation result of the comfort of the room as a representative of the evaluation results of the plurality of people regarding the comfort.

For example, a representative of the evaluation results of multiple people can be obtained as follows. An integer value of 1 to 5 is assigned to the 5-level evaluation. Assign "5" to "comfortable", "4" to "somewhat comfortable", "3" to "neutral", "2" to "somewhat uncomfortable", "1" to "uncomfortable", and multiple people's evaluations By calculating the average value, the evaluation result of the integer value closest to the average value can be used as a representative of the evaluation results of multiple people. For example, if the average value of the evaluation results of multiple people is "4.6", it is possible to select "comfortable", which represents the integer value "5" closest to "4.6", as the representative of the evaluation results of multiple people. can. Alternatively, the most frequent evaluation result may be used as a representative of the evaluation results of a plurality of people.

Similarly to Embodiment 1, the control level setting unit 3D specifies the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped. The control level setting unit 3D modifies the specified energy saving control level based on the evaluation result of the comfort of the room in which the target air conditioner is installed.

The control level setting unit 3D sets the control level for a certain period of time immediately after stopping the air conditioner because it is considered that there will be no problem even if the energy saving control level is increased when the evaluation result of the comfort of the room is "comfortable", which is the highest. The energy saving control level of the air conditioner is set to a level one step higher than the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(3).

The control level setting unit 3D sets the control level for a certain period of time immediately after the air conditioner is stopped because it is considered that there is a risk that comfort may be impaired by energy saving control when the room comfort evaluation result is "uncomfortable", which is the lowest. The energy saving control level of the air conditioner is set to a level one step lower than the energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is corrected to L(1).

The control level setting unit 3D controls the air conditioner's performance for a certain period of time immediately after the air conditioner is stopped, when the room comfort evaluation result is intermediate, ``slightly comfortable,'' ``neutral,'' or ``slightly uncomfortable.'' The energy saving control level of the air conditioner is set to the energy saving control level corresponding to the amount of change in suction temperature. For example, when the energy saving control level corresponding to the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped is L(2), the control level is maintained at L(2).

FIG. 10 is a flowchart showing the processing procedure of the air conditioning control device 100D of the fifth embodiment.

Steps S501 to S503 and S507 to S508 are similar to steps S101 to S103 and S105 to S106 in FIG. 2, so the description will not be repeated.

In step S504, the request storage unit 11 stores the requests regarding comfort of each person who uses the room where the target air conditioner is installed.

In step S505, the evaluation result extraction unit 13 extracts evaluation results regarding the comfort of the room in which the air conditioner is installed from the questionnaire results stored in the request storage unit 11.

In step S506, the control level setting unit 3D determines the energy saving control level L(i) based on the amount of change in the suction temperature of the air conditioner immediately after the air conditioner is stopped, as in the first embodiment.

When the evaluation result regarding the comfort of the room indicates "comfortable", the control level setting unit 3D sets an energy saving control level that is one level higher than the energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner. L(i+1) is set to the energy saving control level of the air conditioner.

When the evaluation result regarding the comfort of the room indicates "uncomfortable", the control level setting unit 3D sets an energy saving control level L that is one step lower than the energy saving control level L(i) based on the amount of change in the intake temperature of the air conditioner. (i-1) is set as the energy saving control level of the air conditioner.

The control level setting unit 3D sets an energy-saving control level L ( i) is set to the energy saving control level of the air conditioner.

(air conditioning system)
FIG. 11 is a diagram showing the configuration of an air conditioning system 1000 according to an embodiment.

The air conditioning system 1000 includes a main storage device 25, an auxiliary storage device 26, an air conditioning device 21, a processor 24, a temperature sensor 22, and a communication interface 23, which are connected by a bus 27.

The main storage device 25 stores air conditioning control programs and the like.
The auxiliary storage device 26 stores data generated by execution of the processor 24 and the like.

Energy saving control is performed on the air conditioner 21.
The processor 24 executes the air conditioning control program stored in the main storage device 25 to perform the functions of the air conditioning control device described in the first to fifth embodiments.

The temperature sensor 22 is placed at the suction port of the air conditioner 21 and detects the suction temperature of the air conditioner 21. Temperature sensor 22 sends information representing the detected suction temperature to processor 24 .

The communication interface 23 performs data communication with external equipment.
The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

1 Air conditioning temperature information storage unit, 2 Air conditioning temperature change calculation unit, 3, 3A, 3B, 3C, 3D control level setting unit, 5, 5C Energy saving control unit, 6, 6C Entry/exit information storage unit, 7 Occupancy time calculation Part, 8 Equipment operation information storage part, 9 Usage rate calculation part, 10 Male to female ratio calculation part, 11 Request storage part, 13 Evaluation result extraction part, 21 Air conditioner, 22 Temperature sensor, 23 Communication interface, 24 Processor, 25 Main memory Device, 26 Auxiliary storage device, 27 Bus, 100, 100A, 100B, 100C, 100D Air conditioning control device, 1000 Air conditioning system.

Claims

An air conditioning control device that controls air conditioning equipment,
a control level setting unit that sets an energy saving control level of the air conditioner based on the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped;
An air conditioning control device comprising: an energy saving control section that executes energy saving control of the air conditioner based on the energy saving control level.
The energy saving control unit calculates a target power consumption of the air conditioner per day when energy saving control of the air conditioner is executed for a certain period of time at the energy saving control level,
The energy saving control unit operates the air conditioner without the energy saving control and sets the energy saving control level when the power consumption on that day is expected to exceed or exceed the target power consumption of the air conditioner per day. The air conditioning control device according to claim 1, wherein the air conditioning device is operated by:
The energy saving control unit calculates a target power consumption of the air conditioner for the certain period when energy saving control is performed on the air conditioner for a certain period at the energy saving control level, and calculates a target power consumption of the air conditioner for the certain period. The air conditioning control device according to claim 2, wherein the target power consumption of the air conditioner per day is calculated from .
The air conditioning control device according to any one of claims 1 to 3, wherein the energy saving control unit increases the time during which the air conditioner is stopped within a predetermined time as the energy saving control level is higher.
comprising a room occupancy time calculation unit that calculates an average occupancy time in a room in which the air conditioning equipment is installed,
The control level setting unit specifies an energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after stopping the air conditioner, and sets the specified energy saving control level to the average occupancy time in the room. The air conditioning control device according to any one of claims 1 to 4, wherein the air conditioning control device is modified based on.
The air conditioning control according to claim 5, wherein the control level setting unit sets the energy saving control level of the air conditioner to a level higher than the specified energy saving control level when the average occupancy time in the room is equal to or less than a threshold value. Device.
comprising a usage rate calculation unit that calculates the usage rate of a room in which the air conditioning equipment is installed,
The control level setting unit specifies an energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped, and sets the specified energy saving control level based on the usage rate of the room. The air conditioning control device according to any one of claims 1 to 4, wherein the air conditioning control device is modified by:
The air conditioning control device according to claim 7, wherein the control level setting unit sets the energy saving control level of the air conditioner to a level higher than the specified energy saving control level when the usage rate of the room is below a threshold value.
comprising a male-female ratio calculation unit that calculates the male-female ratio of people who use the room in which the air conditioning equipment is installed,
The control level setting unit specifies an energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped, and sets the specified energy saving control level to the amount of change in the intake temperature of the air conditioner. The air conditioning control device according to any one of claims 1 to 4, wherein the air conditioning control device is modified based on the gender ratio.
The control level setting unit sets a summer energy saving control level of the air conditioner to a higher level than the specified energy saving control level when a male ratio of people using the room is higher than a female ratio. Item 9. Air conditioning control device according to item 9.
The control level setting unit sets a winter energy saving control level of the air conditioner to a level lower than the specified energy saving control level when the proportion of women using the room is higher than the proportion of men. Item 9. Air conditioning control device according to item 9.
comprising an evaluation result extraction unit that extracts evaluation results regarding the comfort of the room in which the air conditioning equipment is installed,
The control level setting unit specifies an energy saving control level corresponding to the amount of change in the intake temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped, and sets the specified energy saving control level to the level of comfort of the room. The air conditioning control device according to any one of claims 1 to 4, wherein the air conditioning control device is modified based on the evaluation result.
The evaluation result extraction unit acquires evaluation results of multiple stages regarding the comfort of the room,
The control level setting unit sets the energy saving control level of the air conditioner to a level higher than the identified energy saving control level when the comfort evaluation is the highest,
The air conditioning control device according to claim 12, wherein the energy saving control level of the air conditioner is set to a lower level than the specified energy saving control level when the comfort evaluation is the lowest.
An air conditioning control method for controlling air conditioning equipment,
setting an energy saving control level for the air conditioner based on the amount of change in the suction temperature of the air conditioner for a certain period of time immediately after the air conditioner is stopped;
An air conditioning control method comprising: executing energy saving control of the air conditioner based on the energy saving control level.