WO2024219192A1 - 環境制御システム、環境制御方法、及び、プログラム - Google Patents
環境制御システム、環境制御方法、及び、プログラム Download PDFInfo
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- WO2024219192A1 WO2024219192A1 PCT/JP2024/012999 JP2024012999W WO2024219192A1 WO 2024219192 A1 WO2024219192 A1 WO 2024219192A1 JP 2024012999 W JP2024012999 W JP 2024012999W WO 2024219192 A1 WO2024219192 A1 WO 2024219192A1
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- Prior art keywords
- temperature
- air
- space
- air conditioner
- cooling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/62—Tobacco smoke
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/80—Electric charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/60—Energy consumption
Definitions
- the present invention relates to an environmental control system, an environmental control method, and a program.
- Patent document 1 discloses an air conditioning system equipped with an air conditioner and an exhaust means for exhausting air from an indoor space.
- the present invention provides an environmental control system that can determine how to control air conditioning and ventilation equipment while taking into account comfort and energy conservation.
- An environmental control system is an environmental control system that controls the environment in a specified space within a facility, and the specified space is provided with an air conditioner and a ventilation device that supplies and/or exhausts air.
- the system is equipped with an estimation unit that estimates the cooling load of the specified space, the cooling effect when the ventilation device is used, and a first power consumption of the air conditioner required to obtain the cooling effect by the air conditioner instead of the ventilation device based on the temperature outside the facility and the temperature inside the facility, and a control unit that controls the air conditioner and the ventilation device based on the estimation result of the estimation unit, thereby bringing the temperature of the specified space closer to a target temperature.
- An environmental control method is an environmental control method executed by a computer for controlling the environment in a specified space in a facility, the specified space being provided with an air conditioner and a ventilation device for supplying and/or exhausting air, the environmental control method including an estimation step of estimating the cooling load of the specified space, the cooling effect when the ventilation device is used, and a first power consumption of the air conditioner required to obtain the cooling effect by the air conditioner instead of the ventilation device based on the temperature outside the facility and the temperature inside the facility, and a control step of controlling the air conditioner and the ventilation device based on the estimation result in the estimation step, thereby bringing the temperature of the specified space closer to a target temperature.
- a program according to one aspect of the present invention is a program for causing the computer to execute the environmental control method.
- An environmental control system can determine how to control air conditioners and ventilation equipment, taking into account comfort and energy conservation.
- FIG. 1 is a block diagram showing a functional configuration of an environmental control system according to an embodiment.
- FIG. 2 is a flowchart of an example of operation in the morning mode in a bedroom space.
- FIG. 3 is a flowchart of an example of operation in the morning mode in the living space.
- FIG. 4 is a flowchart of an example of operation of the daytime mode in a bedroom space.
- FIG. 5 is a diagram showing an example of a stepwise change in the target temperature.
- FIG. 6 is a flowchart of an example of operation in the evening mode in a bedroom space.
- FIG. 7 is a flowchart of an example of operation in the evening mode in the living space.
- FIG. 8 is a flowchart of a modified example of the operation of the evening mode in a bedroom space.
- FIG. 1 is a block diagram showing a functional configuration of an environmental control system according to an embodiment.
- FIG. 2 is a flowchart of an example of operation in the morning mode in a bedroom space
- FIG. 9 is a diagram showing the change over time in outdoor air temperature-room temperature caused by operating a ventilation device.
- FIG. 10 is a diagram showing the relationship between the difference between the room temperature and the target temperature (vertical axis) and time (horizontal axis) for each cooling output.
- FIG. 11 is a diagram showing the relationship between cooling output (vertical axis) and room temperature (horizontal axis) for each set temperature.
- each figure is a schematic diagram and is not necessarily a precise illustration.
- the same reference numerals are used for substantially the same configurations, and duplicate explanations may be omitted or simplified.
- Fig. 1 is a block diagram showing the functional configuration of an environmental control system according to an embodiment.
- the environmental control system 10 shown in FIG. 1 is a system capable of controlling the environment in the house 100, and specifically, is a temperature control system capable of controlling the temperature in the house 100.
- the environmental control system 10 includes an air conditioner 21 and a ventilation device 22 installed in the bedroom space 20, an air conditioner 31 and a ventilation device 32 installed in the living space 30, an exhaust fan 41 installed in the corridor 40 leading to the bedroom space 20, a temperature sensor 51, a humidity sensor 52, a mobile terminal 70, a server device 80, and a weather information distribution server 90.
- Each of the bedroom space 20 and the living space 30 is an example of a predetermined space (room) in the house 100. Note that, in addition to the two rooms, the bedroom space 20 and the living space 30, there are other rooms in the house 100, but they are not shown in FIG. 1.
- the living space 30 may be interpreted as a space including a living space and a dining space.
- Air conditioner 21 is a device that takes in air from bedroom space 20, adjusts the temperature of the air, and blows it out into bedroom space 20. Air conditioner 21 is capable of both cooling and heating operations, but it is sufficient if it is capable of at least cooling operation.
- the ventilation equipment 22 is a device that can independently supply and exhaust air in the bedroom space 20.
- the ventilation equipment 22 includes a supply air fan 23 for supplying air outside the house 100 to the bedroom space 20, and an exhaust fan 24 for exhausting air from the bedroom space 20 outside the house 100.
- the ventilation equipment 22 may include two or more supply air fans 23, or two or more exhaust fans 24.
- the supply air fan 23 is described as having three modes: high-power operation, low-power operation, and stopped, and the exhaust fan 24 is described as having two modes: operating and stopped.
- the ventilation equipment 22 is described as equipment that actively uses a fan to both supply and exhaust air, it may be equipment that actively supplies or exhausts air and naturally (actively) supplies or exhausts the other air through an air vent. In other words, the ventilation equipment 22 may be equipment that (actively) supplies or exhausts air at least one of the two.
- Air conditioner 31 is a device that takes in air from living space 30, adjusts the temperature of the air, and blows it out into living space 30. Air conditioner 31 is capable of both cooling and heating operations, but it is sufficient if it is capable of at least cooling operation.
- the ventilation equipment 32 is a device that can independently supply and exhaust air in the living space 30.
- the ventilation equipment 32 includes a supply air fan 33 for supplying air outside the house 100 to the bedroom space 20, and an exhaust fan 34 for exhausting air in the living space 30 outside the house 100.
- the ventilation equipment 32 may include two or more supply air fans 33, or two or more exhaust fans 34.
- the supply air fan 33 has three modes: high-power operation, low-power operation, and stopped, and the exhaust fan 34 is described as having two modes: operating and stopped.
- the exhaust fan 41 is an exhaust device that exhausts air from the hallway 40 outside the house 100. In the environmental control system 10, the exhaust fan 41 is described as having two modes: on and off.
- the temperature sensor 51 is a sensor that senses the temperature (room temperature) inside the house 100.
- the temperature sensor 51 is realized by a temperature measuring element such as a thermistor, a thermocouple, or an infrared detection element.
- a temperature measuring element such as a thermistor, a thermocouple, or an infrared detection element.
- the temperature sensor 51 in the description of the operation targeted at the bedroom space 20, the temperature sensor 51 is installed in the bedroom space 20 and measures the temperature of the bedroom space 20, and in the description of the operation targeted at the living space 30, the temperature sensor 51 is installed in the living space 30 and measures the temperature of the living space 30.
- the humidity sensor 52 is a sensor that senses the humidity inside the house 100.
- the humidity sensor 52 is realized by a humidity measuring element such as a capacitance type humidity sensor element or a resistance change type humidity sensor element.
- the humidity sensor 52 in the description of the operation targeted at the bedroom space 20, the humidity sensor 52 is installed in the bedroom space 20 and measures the humidity in the bedroom space 20, and in the description of the operation targeted at the living space 30, the humidity sensor 52 is installed in the living space 30 and measures the humidity in the living space 30.
- the gateway device 60 is a device that allows the air conditioning equipment 21, the ventilation equipment 22, the air conditioning equipment 31, the ventilation equipment 32, the exhaust fan 41, the temperature sensor 51, and the humidity sensor 52 to communicate with the server device 80 via the wide area communication network 110.
- the gateway device 60 may be connected to each of the air conditioning equipment 21, the ventilation equipment 22, the air conditioning equipment 31, the ventilation equipment 32, the exhaust fan 41, the temperature sensor 51, and the humidity sensor 52 by wire or wirelessly.
- a device that converts a control signal into an infrared signal may be provided between the gateway device 60 and the air conditioning equipment 21 (or the air conditioning equipment 31) in order to realize remote control of an existing home appliance.
- the mobile terminal 70 is a portable information terminal (user interface device) through which the user of the environmental control system 10 inputs information necessary to control the environment within the house 100.
- the mobile terminal 70 also presents the current operating status of the above-mentioned air conditioning equipment 21 and other equipment to the user.
- the mobile terminal 70 is, for example, a smartphone or tablet terminal on which a dedicated application program for the environmental control system 10 is installed.
- the server device 80 is a cloud server that performs information processing for controlling the environment within the house 100.
- the server device 80 includes a communication unit 81, an information processing unit 82, and a storage unit 83.
- the communication unit 81 is a communication module (communication circuit) that enables the server device 80 to communicate with the gateway device 60 and the weather information distribution server 90 via the wide area communication network 110.
- the control unit 86 can control the air conditioning equipment 21, the ventilation equipment 22, the air conditioning equipment 31, the ventilation equipment 32, and the exhaust fan 41 by causing the communication unit 81 to transmit control signals to the gateway device 60.
- the communication performed by the communication unit 81 is, for example, wired communication, but may also be wireless communication. There is no particular limitation on the communication standard used for the communication.
- the information processing unit 82 performs information processing to control the environment within the house 100.
- the information processing unit 82 is realized, for example, by a microcomputer, but may also be realized by a processor.
- the information processing unit 82 has an acquisition unit 84, an estimation unit 85, and a control unit 86 as functional components.
- the functions of the acquisition unit 84, the estimation unit 85, and the control unit 86 are realized, for example, by a microcomputer or a processor (hardware) constituting the information processing unit 82 executing a computer program (software) stored in the storage unit 83.
- the detailed functions of the acquisition unit 84, the estimation unit 85, and the control unit 86 will be described later.
- the storage unit 83 is a storage device that stores information necessary for information processing, computer programs executed by the information processing unit 82, and the like.
- the storage unit 83 is realized, for example, by a HDD (Hard Disk Drive), but may also be realized by a semiconductor memory, etc.
- the weather information distribution server 90 is a cloud server that distributes external environment information indicating the temperature and humidity of the area to which the house 100 belongs (i.e., the temperature and humidity outside the house 100) to the server device 80.
- the weather information distribution server 90 can communicate with the server device 80 via the wide area communication network 110.
- the environmental control system 10 can control air conditioning equipment 21, ventilation equipment 22, air conditioning equipment 31, ventilation equipment 32, and exhaust fans 41 (hereinafter also referred to as air conditioning equipment 21, etc.) so as to achieve both comfort and energy conservation (hereinafter also simply referred to as energy conservation) throughout the day in each of the bedroom space 20 and the living space 30.
- Figure 2 is a flowchart of an example of the operation of the morning mode in the bedroom space 20.
- the user instructs the server device 80 in advance to start the morning mode operation at a specified time (such as midnight) by performing an operation on the mobile terminal 70 to turn on the morning mode operation.
- the user also sets the target temperature in the house 100 in the server device 80 by performing an operation on the mobile terminal 70 to set the target temperature.
- the acquisition unit 84 of the server device 80 uses the communication unit 81 to acquire temperature information indicating the current temperature (hereinafter also referred to as room temperature) inside the house 100 from the temperature sensor 51, acquire humidity information indicating the current humidity inside the house 100 from the humidity sensor 52, and acquire external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S11).
- room temperature the current temperature
- humidity information indicating the current humidity inside the house 100 from the humidity sensor 52
- external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S11).
- the acquisition unit 84 can also acquire information indicating the latest temperature and humidity outside the house 100 from these temperature and humidity sensors.
- control unit 86 determines whether the room temperature is higher than the target temperature (S12). If the control unit 86 determines that the room temperature is equal to or lower than the target temperature (No in S12), it performs the process of step S11 again when a first predetermined time (e.g., one minute) has elapsed since the process of step S11 was performed (S11).
- a first predetermined time e.g., one minute
- control unit 86 may determine whether the duration of the cooling operation of the air conditioner 21 is equal to or longer than a second predetermined time (e.g., 10 minutes), and may turn off the cooling operation of the air conditioner 21 if it is equal to or longer than the second predetermined time.
- a second predetermined time e.g. 10 minutes
- control unit 86 determines whether the room temperature is higher than the target temperature (Yes in S12), it determines whether the room temperature is higher than the temperature outside the house 100 (hereinafter also referred to as the outside temperature) (S13).
- the control unit 86 determines that the room temperature is equal to or lower than the outside temperature (No in S13)
- it turns on the cooling operation of the air conditioner 21, stops the exhaust fan 24, and stops the supply fan 23 or operates it at low power (S19a).
- the control unit 86 mainly operates the air conditioner 21.
- the set temperature of the air conditioner 21 is set to, for example, the same temperature as the target temperature.
- step S14 onwards is carried out as follows.
- the estimation unit 85 calculates the enthalpy of the air outside the house 100 (Hout) and the enthalpy of the air inside the house 100 (Hin) (S14).
- Hout is calculated based on the temperature and humidity outside the house 100 indicated by the external environment information.
- Hin is calculated based on the temperature inside the house 100 indicated by the temperature information and the humidity inside the house 100 indicated by the humidity information.
- the estimation unit 85 estimates (estimates) the cooling effect and the energy saving effect due to the ventilation (the operation of the ventilation device 22) (S15).
- the cooling effect and the energy saving effect are calculated based on the following formulas, for example.
- Cooling effect (Hin - Hout) x amount of outside air introduced x specific gravity of air [W]
- Energy saving effect cooling effect/COP of air conditioner 21-power consumption of ventilation device 22 [W]
- the amount of outside air introduced in the formula for calculating the cooling effect is the design value of the supply air volume when the supply air fan 23 is operating at high power.
- the amount of outside air introduced (supply air volume) is stored in advance in the memory unit 83. Note that when the ventilation device 22 supplies air from the vent without using the supply air fan 23, the amount of outside air introduced is close to the exhaust air volume of the exhaust fan 24.
- the power consumption of the ventilation equipment 22 in the calculation formula for the energy saving effect means the design value of the power consumption of the ventilation equipment 22 required to obtain the cooling effect by ventilation (hereinafter also referred to as the second power consumption), and is pre-stored in the memory unit 83.
- the cooling effect/COP (Coefficient of Performance) of the air conditioning equipment 21 means the power consumption (hereinafter also referred to as the first power consumption) of the air conditioning equipment 21 required to obtain a cooling effect equivalent to that achieved by ventilation by operating the air conditioning equipment 21 instead of the ventilation equipment 22.
- the energy saving effect means the first power consumption - the second power consumption.
- the COP of the air conditioning equipment 21 is a design value and is stored in advance in the memory unit 83.
- the estimation unit 85 estimates (estimates) the cooling load in the bedroom space 20 and the estimated power consumption of the air conditioner 21 (also referred to as estimated air conditioning power) (S16).
- Estimated air conditioning power Cooling load / COP [W]
- the number 100 in the cooling load calculation formula corresponds to the estimated amount of heat generated per user.
- the number of users means the number of users of the bedroom space 20, and is, for example, input in advance into the mobile terminal 70 and stored in advance in the memory unit 83.
- the number of users may be detected by a human presence sensor, a camera, or a thermal image sensor (thermal imaging camera) installed in the bedroom space 20.
- the thermal image sensor may also be installed in the air conditioning equipment 21.
- Wall heat transfer multiplied by (outdoor temperature - room temperature) means the thermal effect from the wall. Note that when calculating the cooling load, at least one of the thermal effect from the floor, the thermal effect from the ceiling, and the thermal effect from heat-generating equipment installed in the bedroom space 20 may be further taken into consideration.
- the wall heat transfer of the bedroom space 20 is pre-stored in the memory unit 83.
- the control unit 86 judges whether the energy saving effect estimated in step S15 is greater than 0 (S17). That is, the control unit 86 judges whether the first power consumption of the air conditioning equipment 21 is greater than the second power consumption of the ventilation equipment 22.
- the control unit 86 judges that the energy saving effect is equal to or less than 0 (that is, the second power consumption of the ventilation equipment 22 is greater) (No in S17)
- it turns on the cooling operation of the air conditioning equipment 21, stops the exhaust fan 24, and stops the supply air fan 23 or operates it at low output (S19a). That is, the control unit 86 mainly operates the air conditioning equipment 21.
- the set temperature of the air conditioning equipment 21 is set to, for example, the same temperature as the target temperature.
- control unit 86 determines whether or not the energy saving effect is greater than 0 (i.e., the first power consumption of the air conditioner 21 is greater) (Yes in S17), it determines whether or not the cooling effect due to ventilation estimated in step S15 is greater than the cooling load in the bedroom space 20 estimated in step S16 (S18). In other words, it determines whether or not it is possible to make the temperature of the bedroom space 20 reach the target temperature (to lower the temperature) by operating the ventilation device 22.
- control unit 86 determines that the cooling effect of ventilation is equal to or less than the cooling load in the bedroom space 20 (No in S18), it turns on the cooling operation of the air conditioner 21, operates the exhaust fan 24, and operates the supply air fan 23 at high output (S19b). In other words, the control unit 86 uses the air conditioner 21 and the ventilation device 22 in combination.
- the set temperature of the air conditioner 21 is set to, for example, the same temperature as the target temperature.
- control unit 86 determines that the cooling effect of ventilation is greater than the cooling load in the bedroom space 20 (Yes in S18), it turns off the cooling operation of the air conditioner 21, operates the exhaust fan 24, and operates the supply fan 23 at high power (S19c). In other words, the control unit 86 mainly operates the ventilation device 22.
- the control unit 86 determines whether or not the termination requirements have been met (S20).
- An example of a termination requirement is that the user has performed an operation to stop the air conditioning equipment 21 on the mobile terminal 70. If the control unit 86 determines that the termination requirements have not been met (No in S20), it performs the process of step S11 again (S11) when a first predetermined time (e.g., one minute) has elapsed since the process of step S11 was performed. On the other hand, if the control unit 86 determines that the termination requirements have been met (Yes in S20), it ends the operation of the morning mode.
- a first predetermined time e.g., one minute
- the information indicating that the air conditioner 21 has been stopped and transmitted from the mobile terminal 70 to the server device 80 is information indicating that no one is present in the bedroom space 20 after this information is received (i.e., information indicating the presence or absence of a person).
- the environmental control system 10 switches between primarily operating the ventilation equipment 22, using both the cooling operation of the air conditioner 21 and the operation of the ventilation equipment 22, or primarily operating the air conditioner 21 for cooling.
- Such an environmental control system 10 can achieve both comfort and energy efficiency in the bedroom space 20.
- FIG. 3 is a flowchart of an example of the operation of the morning mode in the living space 30. Note that the operation of the morning mode in the living space 30 is performed in parallel with the operation of the morning mode in the bedroom space 20. The operation of the morning mode in the living space 30 is performed on the assumption that no one is present in the living space 30.
- the acquisition unit 84 of the server device 80 uses the communication unit 81 to acquire temperature information indicating the current room temperature inside the house 100 from the temperature sensor 51, acquire humidity information indicating the current humidity inside the house 100 from the humidity sensor 52, and acquire external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S21). Note that if a temperature sensor that measures the temperature outside the house 100 and a humidity sensor that measures the humidity outside the house 100 are installed outside the house 100 (building) on the premises of the house 100, the acquisition unit 84 can also acquire information indicating the latest temperature and humidity outside the house 100 from these temperature and humidity sensors.
- control unit 86 determines whether the room temperature is higher than the target temperature (S22). If the control unit 86 determines that the room temperature is equal to or lower than the target temperature (No in S22), it turns off the cooling operation of the air conditioner 31, stops the exhaust fan 34, and stops the supply fan 33 (S27a).
- control unit 86 determines whether the room temperature is higher than the target temperature (Yes in S22), it determines whether the room temperature is higher than the outside air temperature (S23). When the control unit 86 determines that the room temperature is equal to or lower than the outside air temperature (No in S23), it turns off the cooling operation of the air conditioner 31, stops the exhaust fan 34, and stops the supply fan 33 (S27a).
- the estimation unit 85 calculates the enthalpy of the air outside the house 100 (Hout) and the enthalpy of the air inside the house 100 (Hin) (S24).
- Hout is calculated based on the temperature and humidity outside the house 100 indicated by the external environment information.
- Hin is calculated based on the temperature inside the house 100 indicated by the temperature information and the humidity inside the house 100 indicated by the humidity information.
- the estimation unit 85 estimates (estimates) the cooling effect and the energy saving effect due to the ventilation (the operation of the ventilation device 32) (S25).
- the cooling effect and the energy saving effect are calculated based on the following formulas, for example.
- Cooling effect (Hin - Hout) x amount of outside air introduced x specific gravity of air [W]
- Energy saving effect cooling effect/COP of air conditioner 31 ⁇ power consumption of ventilation device 32 [W]
- the amount of outside air introduced in the calculation formula for the cooling effect is the design value of the supply air volume when the supply air fan 33 is operating at high power.
- the amount of outside air introduced (supply air volume) is stored in advance in the memory unit 83. Note that when the ventilation device 22 supplies air from the vent without using the supply air fan 23, the amount of outside air introduced is close to the exhaust air volume of the exhaust fan 24.
- the power consumption of the ventilation device 32 in the calculation formula for the energy saving effect means the design value of the power consumption of the ventilation device 32 required to obtain the cooling effect by ventilation (hereinafter also referred to as the second power consumption), and is pre-stored in the memory unit 83.
- the cooling effect/coefficient of performance (COP) of the air conditioning equipment 31 means the power consumption (hereinafter also referred to as the first power consumption) of the air conditioning equipment 31 required to obtain a cooling effect equivalent to that achieved by ventilation by operating the air conditioning equipment 31 instead of the ventilation equipment 32.
- the energy saving effect means the first power consumption - the second power consumption.
- the COP of the air conditioning equipment 31 is pre-stored in the memory unit 83.
- the control unit 86 determines whether the energy saving effect estimated in step S25 is greater than 0 (S26). That is, the control unit 86 determines whether the first power consumption of the air conditioner 31 is greater than the second power consumption of the ventilation device 32. When the control unit 86 determines that the energy saving effect is equal to or less than 0 (that is, the second power consumption of the ventilation device 32 is greater) (No in S26), it turns off the cooling operation of the air conditioner 31, stops the exhaust fan 34, and stops the supply fan 33 (S27a).
- control unit 86 determines that the energy saving effect is greater than 0 (i.e., the first power consumption of the air conditioner 31 is greater) (Yes in S26), it turns off the cooling operation of the air conditioner 31, operates the exhaust fan 34, and operates the supply fan 33 at high power (S27b).
- the control unit 86 determines whether or not the termination requirement has been met (S28).
- the termination requirement is that the user has performed an operation to stop the air conditioning equipment 21 in the bedroom space 20 on the mobile terminal 70. If the control unit 86 determines that the termination requirement has not been met (No in S28), it performs the processing of step S21 again (S21) when a first predetermined time (e.g., one minute) has elapsed since the processing of step S21 was performed. On the other hand, if the control unit 86 determines that the termination requirement has been met (Yes in S28), it ends the operation of the morning mode.
- a first predetermined time e.g., one minute
- the information indicating that the air conditioner 21 has been stopped and transmitted from the mobile terminal 70 to the server device 80 is information indicating that no one is present in the bedroom space 20 after this information is received (i.e., information indicating the presence or absence of a person).
- the environmental control system 10 does not operate the air conditioner 31 for cooling, and operates the ventilation device 32 to bring the temperature of the living space 30 closer to the target temperature only when the energy saving effect is greater than 0.
- Such an environmental control system 10 can pre-cool the living space 30 to the extent that energy saving effect can be obtained, in preparation for when someone comes into the living space 30.
- the user issues a command to the server device 80 to execute the daytime mode operation in advance by performing an operation on the mobile device 70 to turn on the daytime mode operation.
- the acquisition unit 84 uses the communication unit 81 to acquire temperature information indicating the current room temperature from the temperature sensor 51, acquire humidity information indicating the current humidity inside the house 100 from the humidity sensor 52, and acquire external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S31). Note that if a temperature sensor that measures the temperature outside the house 100 and a humidity sensor that measures the humidity outside the house 100 are installed outside the house 100 (building) within the premises of the house 100, the acquisition unit 84 can also acquire information indicating the latest temperature and humidity outside the house 100 from these temperature and humidity sensors.
- the control unit 86 determines whether the room temperature is higher than both the outside air temperature and the target temperature (S32). If the control unit 86 determines that the room temperature is higher than both the outside air temperature and the target temperature (Yes in S32), it turns off the cooling operation of the air conditioner 21, operates the exhaust fan 24, stops the supply fan 23, and operates the exhaust fan 41 (S33a). In other words, the control unit 86 exhausts heat by ventilation in the bedroom space 20 and the hallway 40.
- control unit 86 determines that the room temperature is equal to or lower than the outside temperature or equal to or lower than the target temperature (No in S32), it turns off the cooling operation of the air conditioner 21, stops the exhaust fan 24, stops the supply air fan 23, and stops the exhaust fan 41 (S33b).
- the control unit 86 determines whether or not the termination requirements have been met (S34).
- the termination requirements are that the user has operated the mobile terminal 70 to turn on the cooling operation of the air conditioner 21 in the bedroom space 20, or that evening mode operation (described below) has begun. If the control unit 86 determines that the termination requirements have not been met (No in S34), it performs the processing of step S31 again (S31) when a first predetermined time (e.g., one minute) has elapsed since the processing of step S31 was performed. On the other hand, if the control unit 86 determines that the termination requirements have been met (Yes in S34), it ends the daytime mode operation.
- a first predetermined time e.g., one minute
- the information transmitted from the mobile terminal 70 to the server device 80 indicating that an operation to turn on the cooling operation of the air conditioner 21 has been performed is information indicating that a person is present in the bedroom space 20 after this information is received (i.e., information indicating the presence or absence of a person).
- the environmental control system 10 does not operate the air conditioner 21 because it is assumed that no one is in the bedroom space 20, and exhausts heat through ventilation only when the room temperature is high.
- the environmental control system 10 can prepare for evening mode operation after daytime mode operation.
- the server device 80 When the server device 80 is instructed to execute daytime mode operation and the morning mode operation ends, the server device 80 starts daytime mode operation.
- the daytime mode operation in the living space 30 is performed according to a flowchart similar to that of FIG. 2, and therefore the flowchart is not shown.
- the bedroom space 20 air conditioner 21, ventilation equipment 22, exhaust fan 24, and supply fan 23 in the explanation of FIG. 2 can be read as living space 30, air conditioner 31, ventilation equipment 32, exhaust fan 34, and supply fan 33.
- the amount of solar radiation may be taken into consideration when estimating (calculating) the cooling load in step S16.
- the estimation unit 85 can estimate the amount of solar radiation based on the output fluctuations of the solar panels.
- the estimation unit 85 can also estimate the amount of solar radiation based on the output fluctuations of solar panels installed in street lights installed in the block.
- the conditions for ending the daytime mode operation in the living space 30 are that the user has operated the mobile terminal 70 to turn on the cooling operation of the air conditioner 21 in the bedroom space 20, or that the evening mode operation (described below) has begun.
- the information transmitted from the mobile terminal 70 to the server device 80 indicating that an operation to turn on the cooling operation of the air conditioner 21 has been performed is information indicating that a person is present in the bedroom space 20 after this information is received (i.e., information indicating the presence or absence of a person).
- the environmental control system 10 switches between primarily operating the ventilation equipment 32, using both the cooling operation of the air conditioner 31 and the operation of the ventilation equipment 32, or primarily operating the air conditioner 31 for cooling.
- Such an environmental control system 10 can achieve both comfort and energy efficiency in the living space 30.
- the control unit 86 performs environmental control based on target temperature + X1 (X1 > 0), and after time t1 and before time t2, performs environmental control based on target temperature + X2 (X2 ⁇ X1). Furthermore, after time t2 and before time t3, the control unit 86 performs environmental control based on target temperature + X3 (X3 ⁇ X2), and after time t3 and before the time of entry into the bedroom space 20, performs environmental control based on the target temperature.
- Case A in FIG. 5, which shows the temperature change when the target temperature is changed in stages in this way, can bring the temperature of the bedroom space 20 closer to the target temperature more efficiently than case B, in which environmental control was performed based on the target temperature from the beginning.
- Figure 6 is a flowchart of an example of the operation of the evening mode in the bedroom space 20.
- the operation of the evening mode in the bedroom space 20 is generally the same as the operation of the morning mode in the bedroom space 20, so the same processes are given the same step numbers and detailed explanations are omitted.
- the user turns on the evening mode operation and performs an operation on the mobile terminal 70 to specify the entry time into the bedroom space 20, thereby instructing the server device 80 in advance to execute the evening mode operation.
- information indicating the entry time into the bedroom space 20 is stored in the memory unit 83.
- the information indicating the entry time into the bedroom space 20 is information indicating that a person is present in the bedroom space 20 after the entry time (i.e., information indicating the presence or absence of a person).
- the acquisition unit 84 of the server device 80 uses the communication unit 81 to acquire temperature information indicating the current room temperature inside the house 100 from the temperature sensor 51, acquire humidity information indicating the current humidity inside the house 100 from the humidity sensor 52, and acquire external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S11). Note that if a temperature sensor that measures the temperature outside the house 100 and a humidity sensor that measures the humidity outside the house 100 are installed outside the house 100 (building) within the grounds of the house 100, the acquisition unit 84 can also acquire information indicating the latest temperature and humidity outside the house 100 from these temperature and humidity sensors.
- control unit 86 determines whether the room temperature is higher than the target temperature + X (S12x).
- X is one of the values X1, X2, X3, and 0 depending on the current time.
- control unit 86 determines that the room temperature is equal to or lower than the target temperature + X (No in S12x), it performs the process of step S11 again (S11) when a first predetermined time (e.g., 1 minute) has elapsed since the process of step S11 was performed.
- a first predetermined time e.g. 1 minute
- the control unit 86 may determine whether the duration of the cooling operation of the air conditioner 21 is equal to or higher than a second predetermined time (e.g., 10 minutes), and may turn off the cooling operation of the air conditioner 21 if it is equal to or higher than the second predetermined time.
- control unit 86 determines whether the room temperature is higher than the target temperature + X (Yes in S12x), it determines whether the room temperature is higher than the temperature outside the house 100 (hereinafter also referred to as the outside temperature) (S13).
- the subsequent processing of steps S13 to S18 is similar to the processing of steps S13 to S18 in FIG. 2, so a detailed description will be omitted.
- control unit 86 determines in step S13 that the room temperature is equal to or lower than the outside air temperature (No in S13), and if it determines in step S17 that the energy saving effect is equal to or lower than 0 (No in S17), it turns on the cooling operation of the air conditioner 21, stops the exhaust fan 24, and stops the supply fan 23 or operates it at low output (S19x).
- the set temperature of the air conditioner 21 at this time is set to, for example, the target temperature + X.
- X takes on any of the values X1, X2, X3, and 0 depending on the current time.
- control unit 86 determines in step S18 that the cooling effect of ventilation is equal to or less than the cooling load in the bedroom space 20 (No in S18), it turns on the cooling operation of the air conditioner 21, operates the exhaust fan 24, and operates the supply fan 23 at high output (S19y). In other words, the control unit 86 uses the air conditioner 21 and the ventilation device 22 in combination.
- the set temperature of the air conditioner 21 is set to, for example, the target temperature + X.
- control unit 86 determines in step S18 that the cooling effect of ventilation is greater than the cooling load in the bedroom space 20 (Yes in S18), it turns off the cooling operation of the air conditioner 21, operates the exhaust fan 24, and operates the supply fan 23 at high power (S19c). In other words, the control unit 86 mainly operates the ventilation device 22.
- the control unit 86 determines whether or not the termination requirement has been met (S20).
- the termination requirement is, for example, that the time for the user to enter the bedroom space 20 has arrived. If the control unit 86 determines that the termination requirement has not been met (No in S20), it performs the processing of step S11 again (S11) when a first predetermined time (for example, one minute) has elapsed since the processing of step S11 was performed. On the other hand, if the control unit 86 determines that the termination requirement has been met (Yes in S20), it ends the operation of the evening mode.
- the environmental control system 10 performs environmental control in the bedroom space 20 in the evening mode based on the target temperature + X (X > 0), and gradually reduces the value of X. This allows the environmental control system 10 to efficiently bring the temperature of the bedroom space 20 closer to the target temperature.
- the user turns on the evening mode operation and performs an operation on the mobile terminal 70 to specify the entry time into the bedroom space 20, thereby instructing the server device 80 in advance to execute the evening mode operation.
- information indicating the entry time into the bedroom space 20 is stored in the memory unit 83.
- the information indicating the entry time into the bedroom space 20 is information indicating that a person is present in the bedroom space 20 after the entry time (i.e., information indicating the presence or absence of a person).
- step S41 When the third predetermined time before the time of entry into the bedroom space 20 arrives, the process of step S41 is performed.
- steps S41 to S48 are the same as the processes of steps S11 to S18 in FIG. 2.
- the bedroom space 20 the air conditioning equipment 21, the ventilation equipment 22, the exhaust fan 24, and the supply fan 23 in the explanation of the processes of steps S11 to S18 can be read as the living space 30, the air conditioning equipment 31, the ventilation equipment 32, the exhaust fan 34, and the supply fan 33.
- control unit 86 determines in step S48 that the cooling effect of ventilation is equal to or less than the cooling load in the living space 30 (No in S48), it turns on the cooling operation of the air conditioner 31, stops the exhaust fan 24, and stops the supply fan 33 at high output (S49b). In other words, the control unit 86 uses the air conditioner 31 and the ventilation device 32 in combination.
- the set temperature of the air conditioner 31 is set to, for example, the target temperature.
- control unit 86 determines in step S48 that the cooling effect of ventilation is greater than the cooling load in the living space 30 (Yes in S48), it turns off the cooling operation of the air conditioner 31, stops the exhaust fan 34, and operates the supply fan 33 at high power (S49c). In other words, the control unit 86 mainly operates the ventilation device 32.
- the control unit 86 determines whether or not the termination requirement has been met (S50).
- the termination requirement is, for example, that the time for the user to enter the bedroom space 20 has arrived. If the control unit 86 determines that the termination requirement has not been met (No in S50), it performs the processing of step S41 again (S41) when a first predetermined time (for example, one minute) has elapsed since the processing of step S41 was performed. On the other hand, if the control unit 86 determines that the termination requirement has been met (Yes in S50), it ends the operation of the evening mode.
- the environmental control system 10 stops the exhaust fan 24 when performing any of steps S49a, S49b, and S49c during evening mode operation in the living space 30.
- This allows the environmental control system 10 to create positive pressure in the living space 30, thereby allowing the cool air in the living space 30 to be introduced into the bedroom space 20, where cool air is next required.
- the environmental control system 10 can make effective use of the cool air in the living space 30.
- Fig. 8 is a flowchart of a modified example of the operation of the evening mode in the bedroom space 20.
- the user turns on the evening mode operation and performs an operation on the mobile terminal 70 to specify the entry time into the bedroom space 20, thereby instructing the server device 80 in advance to execute the evening mode operation.
- information indicating the entry time into the bedroom space 20 is stored in the memory unit 83.
- the information indicating the entry time into the bedroom space 20 is information indicating that a person is present in the bedroom space 20 after the entry time (i.e., information indicating the presence or absence of a person).
- the acquisition unit 84 of the server device 80 uses the communication unit 81 to acquire temperature information indicating the current room temperature inside the house 100 from the temperature sensor 51, and acquires external environment information indicating the latest temperature outside the house 100 from the weather information distribution server 90 (S61). Note that if a temperature sensor that measures the temperature outside the house 100 is installed outside the house 100 (building) within the grounds of the house 100, the acquisition unit 84 can also acquire information indicating the latest temperature outside the house 100 from this temperature sensor.
- the estimation unit 85 determines that the room temperature indicated by the temperature information is higher than the outside air temperature indicated by the external environment information (S62), it estimates the time N1 until the outside air temperature minus the room temperature becomes minimum (constant) by operating the ventilation device 22 (S63).
- Figure 9 is a diagram showing the change over time in the outside air temperature minus the room temperature by operating the ventilation device 22. Note that the formula for estimating the time N1 is generated in advance, for example, by actually measuring the outside air temperature minus the room temperature when the ventilation device 22 is operated, and is stored in the memory unit 83.
- the control unit 86 operates the ventilation device 22 for the time N1, and then stops the ventilation device 22 (S64).
- the acquisition unit 84 uses the communication unit 81 to acquire temperature information indicating the current room temperature inside the house 100 from the temperature sensor 51, acquire humidity information indicating the current humidity inside the house 100 from the humidity sensor 52, and acquire external environment information indicating the latest temperature and humidity outside the house 100 from the weather information distribution server 90 (S65). Note that if a temperature sensor that measures the temperature outside the house 100 and a humidity sensor that measures the humidity outside the house 100 are installed outside the house 100 (building) on the premises of the house 100, the acquisition unit 84 can also acquire information indicating the latest temperature and humidity outside the house 100 from these temperature and humidity sensors.
- the estimation unit 85 estimates the time N2 until the room temperature reaches the target temperature when the air conditioner 21 is operated based on the difference between the enthalpy of the air outside the house 100 (Hout) and the enthalpy of the air inside the house 100 (Hin), which is determined by the information acquired in step S65 (S66).
- the time N2 is the time until the difference between the room temperature and the target temperature becomes zero.
- the time N2 is simulated for each cooling output (air volume) of the air conditioner 21.
- FIG. 10 is a diagram showing the relationship between the difference between the room temperature and the target temperature (vertical axis) and time (horizontal axis) for each cooling output. Note that the time N2 may be corrected taking into account the volume of the bedroom space 20, the heat transfer, and the heat load of heat-generating equipment, etc.
- the control unit 86 selects the cooling output that satisfies tcd>N2, where N2 x cooling output is the smallest, when the remaining time from the current time to the entry time is tcd (S67).
- the control unit 86 also selects the set temperature of the air conditioner 21 (S68).
- Figure 11 is a diagram showing the relationship between the cooling output (vertical axis) and the room temperature (horizontal axis) for each set temperature.
- control unit 86 After the control unit 86 operates the air conditioner 21 in cooling mode for a time Tint with the settings selected in steps S67 and S68 (S69), it determines whether the room temperature is higher than the target temperature (S70). If the control unit 86 determines that the room temperature is higher than the target temperature (Yes in S70), it performs the process of step S67 again (S67). On the other hand, if the control unit 86 determines that the room temperature is equal to or lower than the target temperature, it causes the air conditioner 21 to perform low-output cooling mode (S71).
- the environmental control system 10 when operating in evening mode in the bedroom space 20, the environmental control system 10 operates the ventilation equipment 22 at the beginning to bring the room temperature closer to the outside temperature, and then has the air conditioning equipment 21 perform cooling operations, thereby efficiently bringing the temperature in the bedroom space 20 closer to the target temperature.
- control of the air conditioners and ventilation equipment in each of the bedroom space 20 and the living space 30 has been described, but the control of the air conditioners and ventilation equipment described in the above embodiment may also be performed in spaces other than the bedroom space 20 and the living space 30.
- inventions derived from the disclosure of this specification are, for example, the following inventions.
- the inventions derived from the disclosure of this specification will be described together with the effects and the like obtained by the inventions.
- an environmental control system 10 controls the environment in a predetermined space in a facility.
- the predetermined space is provided with an air conditioner and a ventilation device that supplies and exhausts air.
- the environmental control system 10 includes an estimation unit 85 that estimates the cooling load of the predetermined space, the cooling effect when the ventilation device is used, and the first power consumption of the air conditioner required to obtain the cooling effect by the air conditioner instead of the ventilation device based on the temperature outside the facility and the temperature inside the facility, and a control unit 86 that controls the air conditioner and the ventilation device based on the estimation result of the estimation unit 85 to bring the temperature of the predetermined space closer to a target temperature.
- the house 100 of the above embodiment is an example of a facility, and each of the bedroom space 20 and the living space 30 is an example of a predetermined space.
- the operation of the morning mode in the bedroom space 20, the operation of the daytime mode in the living space 30, the operation of the evening mode in the bedroom space 20, and the operation of the evening mode in the living space 30 are examples of the operation of controlling the air conditioner and the ventilation device based on the estimation result of the estimation unit 85.
- Such an environmental control system 10 can determine how to control air conditioning and ventilation equipment, taking into account comfort and energy conservation.
- control unit 86 operates the ventilation equipment when the estimated first power consumption is greater than the second power consumption of the ventilation equipment required to obtain a cooling effect, or uses the operation of the ventilation equipment in combination with the cooling operation of the air conditioner, and operates the air conditioner in cooling mode when the first power consumption is equal to or less than the second power consumption.
- control unit 86 is the environmental control system 10 of invention 2, in which when the estimated first power consumption is greater than the second power consumption, the control unit 86 operates the ventilation equipment when the cooling effect is equal to or less than the cooling load, and uses both the operation of the ventilation equipment and the cooling operation of the air conditioner when the cooling effect is greater than the cooling load.
- Such an environmental control system 10 can achieve both comfort and energy conservation in a given space by switching between operating primarily the ventilation equipment 22, using both the cooling operation of the air conditioner 21 and the operation of the ventilation equipment 22, or operating primarily the air conditioner 21 for cooling.
- the facility is provided with a plurality of designated spaces, and an air conditioner and a ventilation device are provided in each of the plurality of designated spaces, and the control unit 86 controls the air conditioner and the ventilation device in each of the plurality of designated spaces based on the estimation result of the estimation unit 85.
- the bedroom space 20 and the living space 30 are examples of the plurality of designated spaces.
- the control unit 86 switches the operation mode for controlling the air conditioner and the ventilation equipment based on the estimation result of the estimation unit 85, to another operation mode, based on the presence/absence information of people in a specified space, in the environmental control system 10 of any of inventions 1 to 4.
- the switching of the operation mode is, for example, switching between morning mode, daytime mode, and evening mode.
- Invention 6 is an environmental control method for controlling the environment in a predetermined space in a facility, executed by a computer such as an environmental control system 10, in which an air conditioner and a ventilation device for supplying and/or exhausting air are provided in the predetermined space, and the environmental control method includes an estimation step of estimating the cooling load of the predetermined space, the cooling effect when the ventilation device is used, and a first power consumption of the air conditioner required to obtain the cooling effect by the air conditioner instead of the ventilation device, based on the temperature outside the facility and the temperature inside the facility, and a control step of controlling the air conditioner and the ventilation device based on the estimation result in the estimation step, thereby bringing the temperature of the predetermined space closer to a target temperature.
- the estimation step is, for example, step S15 and step S16
- the control step is, for example, step S19a, step S19b, and step S19c.
- Invention 7 is a program for causing a computer to execute the environmental control method described in invention 6.
- the environmental control system is realized by multiple devices.
- the components (particularly functional components) of the environmental control system may be allocated in any way to the multiple devices.
- the environmental control system may also be realized as a single device.
- the environmental control system may be realized as a single device that corresponds to a server device.
- the method of communication between the devices in the above embodiment is not particularly limited. Furthermore, communication between the devices may involve a relay device (such as a broadband router) (not shown).
- a relay device such as a broadband router
- processing performed by a specific processing unit may be executed by another processing unit.
- the order of multiple processes may be changed, and multiple processes may be executed in parallel.
- each component may be realized by executing a software program suitable for each component.
- Each component may be realized by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.
- each component may be realized by hardware.
- each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.
- the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM.
- the present invention may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.
- the present invention may be realized as a server device according to the above-described embodiments.
- the present invention may also be realized as an environmental control method executed by a computer such as the environmental control system according to the above-described embodiments, or as a program (in other words, a computer program product) for causing a computer to execute the environmental control method.
- the present invention may also be realized as a computer-readable non-transitory recording medium on which such a program is recorded.
- the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may conceive, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the spirit of the present invention.
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Abstract
Description
[構成]
まず、実施の形態に係る環境制御システムの構成について説明する。図1は、実施の形態に係る環境制御システムの機能構成を示すブロック図である。
環境制御システム10は、寝室空間20、及び、リビング空間30のそれぞれにおいて、1日を通して、快適性と省エネルギー性(以下、単に、省エネ性とも記載する)とが両立するように、空調機器21、換気機器22、空調機器31、換気機器32、及び、排気ファン41(以下、空調機器21等とも記載される)を制御することができる。
冷却効果=(Hin-Hout)×外気導入量×空気の比重[W]
省エネ効果=冷却効果/空調機器21のCOP-換気機器22の消費電力[W]
冷房負荷=100×ユーザ数+壁熱貫流×(外気温-室温)[W]
想定空調電力=冷房負荷/COP[W]
次に、リビング空間30におけるモーニングモードの動作について説明する。図3は、リビング空間30におけるモーニングモードの動作例のフローチャートである。なお、リビング空間30におけるモーニングモードの動作は、寝室空間20におけるモーニングモードの動作と並行して行われる。リビング空間30におけるモーニングモードの動作は、リビング空間30に人がいないことを想定した動作である。
冷却効果=(Hin-Hout)×外気導入量×空気の比重[W]
省エネ効果=冷却効果/空調機器31のCOP-換気機器32の消費電力[W]
次に、日中の暑い時間帯に行われるデイタイムモードの動作について説明する。図4は、寝室空間20におけるデイタイムモードの動作例のフローチャートである。
次に、リビング空間30におけるデイタイムモードの動作について説明する。リビング空間30におけるデイタイムモードの動作は、寝室空間20におけるデイタイムモードの動作と並行して行われる。
次に、夕方以降に行われるイブニングモードの動作について説明する。寝室空間20におけるイブイングモードの動作においては、当初は寝室空間20に人がいないため寝室空間20を最終的な目標温度にする必要はないが、人が寝室空間20を使用する頃には寝室空間20が最終的な目標温度になっている必要がある。そこで、制御部86は、当初は、目標温度+X(X>0)を基準に環境制御を行い、Xの値を段階的に小さくする。図5は、目標温度の段階的な変更例を示す図である。
次に、リビング空間30におけるイブイングモードの動作について説明する。図7は、リビング空間30におけるイブニングモードの動作例のフローチャートである。リビング空間30におけるイブニングモードの動作は、寝室空間20におけるイブニングモードの動作と並行して行われる。
寝室空間20におけるイブニングモードの動作は、以下のような動作であってもよい。図8は、寝室空間20におけるイブニングモードの動作の変形例のフローチャートである。
上記実施の形態では、東南アジアなどの温暖な地域における利用を想定して、空調機器21または空調機器31が冷房動作を行うときの動作モードの例について説明した。しかしながら、空調機器21または空調機器31が暖房動作を行うときにも同様の動作モードを実現することができる。
本明細書の開示内容から導き出される発明は、例えば以下のような発明である。以下、本明細書の開示内容から導き出される発明について、当該発明によって得られる効果等と合わせて説明する。
以上、実施の形態について説明したが、本発明は、上記実施の形態に限定されるものではない。
20 寝室空間
21、31 空調機器
22、32 換気機器
23、33 給気ファン
24、34、41 排気ファン
30 リビング空間
40 廊下
51 温度センサ
52 湿度センサ
60 ゲートウェイ装置
70 携帯端末
80 サーバ装置
81 通信部
82 情報処理部
83 記憶部
84 取得部
85 推定部
86 制御部
90 気象情報配信サーバ
100 住宅
110 広域通信ネットワーク
Claims (7)
- 施設内の所定空間における環境を制御する環境制御システムであって、
前記所定空間には、空調機器と、給気及び排気の少なくとも一方を行う換気機器とが設けられ、
前記施設外の温度、及び、前記施設内の温度に基づいて、前記所定空間の冷房負荷、前記換気機器を使用した場合の冷却効果、及び、前記換気機器に代えて前記空調機器によって前記冷却効果を得るために必要な前記空調機器の第1消費電力を推定する推定部と、
前記推定部の推定結果に基づいて、前記空調機器及び前記換気機器の制御を行うことにより、前記所定空間の温度を目標温度に近づける制御部とを備える
環境制御システム。 - 前記制御部は、
推定された前記第1消費電力が、前記冷却効果を得るために必要な前記換気機器の第2消費電力よりも大きい場合、前記換気機器を動作させるか、または、前記換気機器の動作と前記空調機器の冷房動作とを併用し、
前記第1消費電力が前記第2消費電力以下である場合、前記空調機器を冷房動作させる
請求項1に記載の環境制御システム。 - 前記制御部は、推定された前記第1消費電力が前記第2消費電力よりも大きい場合、
前記冷却効果が前記冷房負荷以下であるときには、前記換気機器を動作させ、
前記冷却効果が前記冷房負荷よりも大きいときには、前記換気機器の動作と前記空調機器の冷房動作とを併用する
請求項2に記載の環境制御システム。 - 前記施設内には、複数の前記所定空間が設けられ、
前記空調機器、及び、前記換気機器は、複数の前記所定空間のそれぞれに設けられ、
前記制御部は、複数の前記所定空間のそれぞれにおいて、前記推定部の推定結果に基づく前記空調機器及び前記換気機器の制御を行う
請求項1に記載の環境制御システム。 - 前記制御部は、前記所定空間における人の在不在情報に基づいて、前記推定部の推定結果に基づく前記空調機器及び前記換気機器の制御を行う動作モードを、他の動作モードに切り替える
請求項1~4のいずれか1項に記載の環境制御システム。 - コンピュータによって実行される、施設内の所定空間における環境を制御する環境制御方法であって、
前記所定空間には、空調機器と、給気及び排気の少なくとも一方を行う換気機器とが設けられ、
前記環境制御方法は、
前記施設外の温度、及び、前記施設内の温度に基づいて、前記所定空間の冷房負荷、前記換気機器を使用した場合の冷却効果、及び、前記換気機器に代えて前記空調機器によって前記冷却効果を得るために必要な前記空調機器の第1消費電力を推定する推定ステップと、
前記推定ステップにおける推定結果に基づいて、前記空調機器及び前記換気機器の制御を行うことにより、前記所定空間の温度を目標温度に近づける制御ステップとを含む
環境制御方法。 - 請求項6に記載の環境制御方法を前記コンピュータに実行させるためのプログラム。
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|---|---|---|---|---|
| JP2014070827A (ja) * | 2012-09-28 | 2014-04-21 | Daikin Ind Ltd | 換気装置のコントローラ |
| JP2017220918A (ja) * | 2016-06-10 | 2017-12-14 | パナソニックIpマネジメント株式会社 | 制御システム、及び、制御方法 |
| JP6270996B2 (ja) * | 2014-05-12 | 2018-01-31 | 三菱電機株式会社 | 空調装置 |
| JP2019168194A (ja) * | 2018-03-26 | 2019-10-03 | 三菱電機株式会社 | 外気処理ユニット |
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| JP2014070827A (ja) * | 2012-09-28 | 2014-04-21 | Daikin Ind Ltd | 換気装置のコントローラ |
| JP6270996B2 (ja) * | 2014-05-12 | 2018-01-31 | 三菱電機株式会社 | 空調装置 |
| JP2017220918A (ja) * | 2016-06-10 | 2017-12-14 | パナソニックIpマネジメント株式会社 | 制御システム、及び、制御方法 |
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