JP2008241161A - Air conditioning control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning control system attaining energy saving while maintaining amenity by setting a target temperature based on users' demands. <P>SOLUTION: An energy-saving target monitoring device 5 computes an energy-saving target achievement degree ΔΦ. A server device 4 comprises a demand information acquiring means 41 acquiring the users' demands from an input device 3, and a control plan making means 43 which changes a target temperature To in a direction to increase energy consumption by comparing demand information Inf for increasing energy consumption with a first reference value K1, changes the target temperature To in a direction to reduce energy consumption by comparing demand information Inf for reducing energy consumption with a second reference value K2, and changes the first and second reference values K1, K2 based on the energy-saving target achievement degree ΔΦ. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioning control system.

  In recent years, social demands for energy conservation due to global warming are increasing. The current energy conservation law obliges the consumer sector not only to improve the energy conservation performance of individual devices, but also to conserve energy in terms of management using BEMS (Building and Energy Management System).

  However, as the actual situation of building management, the building manager does not always operate air conditioning devices such as cooling and heating appropriately from the viewpoint of comfort and energy saving. In particular, with regard to thermal environment management (for example, temperature management) of living spaces where energy saving and comfort are intricately related, a customary target temperature is set for ease of management, and it is received from users who enjoy the thermal environment. Generally, the set value is changed according to a claim.

  In other words, because temperature management is performed without fully considering the characteristics of the building or occupants, the living space is not necessarily kept in a comfortable state for the user, and furthermore, waste of energy consumed by the air conditioner occurs. There is. In addition, some users are dissatisfied with being unable to control their own thermal environment because they are in a thermal environment managed by the building manager.

In response to the problems caused by temperature management of air conditioning control, users' requests for thermal environment are collected in real time from personal computer terminals (hereinafter referred to as personal computers) operated by each individual. There is a method to set the target temperature based on the relationship between the thermal environment desired by the user and the target temperature in real time, the user characteristics that change from moment to moment, the difference between the actual temperature of the living space and the detected temperature, etc. It is possible to change the thermal environment according to the characteristics of each building. (For example, refer to Patent Document 1).
JP 2004-205202 A

  However, in the system in which the target temperature is set based on the user's request as in the above-mentioned Patent Document 1, if the user is not conscious of energy saving, the thermal environment is not concerned about the increase in energy consumption. As a result, it was difficult to save energy.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide an air conditioning control system that enables energy saving while setting a target temperature based on a user's request and maintaining comfort. There is.

  According to the first aspect of the present invention, there is provided an air conditioning equipment that varies the temperature of a space to be air-conditioned, an air conditioning controller that controls the operation of the air conditioning equipment based on the target temperature, and a central control that sets a target temperature in the air conditioning controller. A device, an input device for inputting a request for the temperature of the space from a user existing in the space, and an energy saving target monitoring device for monitoring the energy consumption of the air conditioning facility device. Target value setting means for setting energy saving target values to reduce energy consumption, energy monitoring means for measuring energy consumption of air conditioning equipment, and energy saving target achievement based on energy saving target values and measured energy consumption values The central control device includes request information for acquiring a user's request from the input device. By comparing the obtaining means, the rate of request information for increasing energy consumption with the first reference value, the target temperature is changed in the direction of increasing the energy consumption, and the rate of request information for reducing energy consumption is second. And a control plan drafting means for changing the target temperature in a direction to reduce energy consumption by comparing with the reference value of the first and second reference values based on the achievement degree of the energy saving target. It is characterized by.

  According to this invention, while setting the target temperature based on a user's request and maintaining comfort, the first and second reference values used for setting the target temperature are set based on the achievement level of the energy saving target. As a result, the target temperature is set by correcting the control plan while considering energy saving, so that both comfort and energy saving can be achieved. That is, it is possible to save energy while maintaining the comfort by setting the target temperature based on the user's request.

  According to a second aspect of the present invention, in the first aspect, the control planning means changes the first and second reference values based on the target achievement level of the energy saving and the target temperature or the outside air temperature. Features.

  According to this invention, when energy consumption is large, it is possible to improve the energy saving target achievement efficiency by facilitating control in the energy saving direction.

  According to a third aspect of the present invention, in the first or second aspect, the central control device sets a start temperature, which is a target temperature set in the air-conditioning control device by the control planning means when the next operation starts, to the target for energy saving. It is characterized by comprising start temperature determining means for determining based on the achievement level.

  According to the present invention, it is possible to efficiently improve the degree of achievement of energy saving targets.

  As described above, the present invention has an effect of enabling energy saving while setting the target temperature based on the user's request and maintaining comfort.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
FIG. 1 shows a configuration of an air conditioning control system according to the present embodiment, in which one or a plurality of users exist and a thermal environment is constructed by the system (for example, a floor in a building, each room, or a wide area). Public area) On the air-conditioning equipment 1 and air-conditioning control device 2 installed in A, and on a communication network NT (Ethernet (registered trademark), etc.) in which each user in the space A inputs desired information Inf for the temperature of the space A A plurality of input devices 3 composed of personal personal computer terminals, and a central point connected to each input device 3 via a communication network NT and setting a target temperature To of space A based on the desired information Inf input by each user It is comprised by the control apparatus (henceforth a server apparatus) 4 and the energy-saving target monitoring apparatus 5 which monitors the energy consumption of the air-conditioning equipment 1.

  The server device 4 collects the request information Inf from the input device 3 via the communication network NT and the request information Inf, and the request information Inf is totalized and registered in the database 42 of the total contents and determination criteria. Based on the determination criteria, a control plan drafting means 43 for deriving the target temperature To of the space A and passing it to the air conditioning control device 2 via the communication network NT, and a history memory for storing the history of the desired information Inf, the target temperature To, etc. The means 44 and the control plan drafting means 43 are constituted by a start temperature determining means 45 for determining a start temperature Ts which is a target temperature set in the air conditioning control device 2 at the start of the next operation.

  Further, the energy saving target monitoring device 5 includes an energy saving target setting means 52 for setting an energy saving target value Φ1 for reducing the energy consumption of the air conditioning equipment 1, an energy monitoring means 53 for measuring the energy consumption E of the air conditioning equipment 1, The energy saving target achievement degree calculating means 51 is configured to calculate the energy saving target achievement degree ΔΦ based on the energy saving target value Φ1 and the measured value of the consumed energy E.

  As shown in FIG. 2A, the air conditioning equipment 1 used in the system of the present embodiment is installed in the air conditioning equipment room 100 in the form of cold / hot water from a heat source (not shown) composed of a refrigerator (cooling tower) or a boiler. It consists of an air conditioner consisting of an installed air conditioner 101, a duct 102 disposed in the space A, and an outlet 104, and heats and cools air (heat exchange with air) in the air conditioner 101, The heat-exchanged air is supplied into the space A from the dozen or more outlets 104 provided in the space A that is the floor of the environment control target through the duct 102. As for the return air, an air conditioner is used that secures a return air path 105 indicated by a broken line from the central passage of the space A toward the air conditioning equipment room 100, mixes the outside air at the same time, and performs air conditioning. In this air conditioning equipment, the air conditioner 101 changes the supply air temperature and controls the room temperature.

  Here, the thermal environment control target space A of the present embodiment is an office floor, for example, and a large number of desks 106 are arranged in the space A as shown in FIG. It has come to be used. In such a space A, the input device 3 which is a personal computer on the desk used by the user who enjoys the thermal environment accesses a WEB server (not shown) in the server device 4 and inputs content for inputting environmental information to the WEB. By obtaining from the server, the request information input means 31 is realized. In the illustrated example, it is assumed that a system capable of communicating with the server device 4 is constructed for all the input devices 3 via the communication network NT, and the request information input means 31 is provided between the server device 4 and the input device 3. General browser software that realizes Each input device 3 has an air conditioning number (a number that identifies the air conditioning area of the air conditioning equipment 1) and unique identification information (for example, an individual name or an e-mail address) of the air conditioning equipment 1 as a target when inputting environmental information Etc.) and the environmental information Inf is delivered to the server device 4 together with the unique identification information and the air conditioning number.

  The server device 4 constitutes the core of the system of the present embodiment, has data acquisition timing, etc., and when each input device 3 is activated and content for entering environment information is automatically started, A function of providing necessary data to the input device 3 corresponding to the rising is provided.

  That is, the content for inputting the environment information is set to automatically start when the input device 3 is activated, and the input device 3 accesses the server device 4 at the same time when the input device 3 is activated, and a signal ( Identification information) is sent, and necessary information such as a question format is acquired from the server apparatus 4 side. Note that the configuration in which the input device 3 transmits a signal indicating its activation to the server device 4 is not limited to the above configuration.

  FIG. 3 shows a monitor screen after the input device 3 is activated. The user of the input device 3 inputs request information Inf indicating a request for the temperature of the current space A. This is a screen for selecting and inputting a request for temperature such as “I want you to lower the temperature”, and check the check fields C1 and C2 corresponding to the request using a pointing device such as a mouse. When the transmission button B1 is clicked, the request information Inf of the specific user at that time is uploaded to the server device 4 together with the self identification information and the air conditioning number. Further, the screen for inputting the request information Inf can be displayed on the input device 3 at an arbitrary timing not only when the input device 3 is started but also by a user operation or an instruction from the server device 4. it can.

  The request information acquisition means 41 collects the request information Inf transmitted to the server apparatus 4 side by using browser software client software installed in each input device 3 used by the user, and stores history information. The process of writing to 44 is performed. For information transmitted from the user's input device 3 through the communication network NT, an external storage device indicates which user has transmitted at what position in the space A from the transmitted identification information of the input device 3. Is specified based on the personal information and the identification information stored in the ID, and the arrangement information of the input device 3 associated with the identification information, and the above-mentioned request information Inf is associated with the identification information and the air conditioning number. In addition, it is stored in the history storage means 44.

  For the request information Inf collected from the input device 3 in this way, the control plan drafting means 43 of the server device 4 is stored in the database 42 and the request information Inf stored in the history storage means 44. And calculate the ratio (request rate) to the total number of users of the two conflicting demand information such as “I want you to raise the temperature” and “I want you to lower the temperature”. The target temperature To is determined by the consensus building logic that compares the ratio with the criterion rule. Here, the air-conditioning equipment 1 is cooling the space A, and the request to “increase the temperature” is request information to reduce the energy consumption, and the request to “decrease the temperature” increases the energy consumption. It is request information to be made. The total number of users is determined by the number of activated input devices 3 and the number of users in the space A counted by an entrance / exit management device (not shown).

  As shown in FIG. 4, the determination criteria rule stored in the database 42 is a request rate that “the temperature is desired to be increased” on the vertical axis and a request rate that “the temperature is desired to be decreased” on the horizontal axis. Take the line connecting both points with a request rate of 100% and the line that connects the zero point from the point where 65% wants to raise the temperature and 35% wants the temperature to fall. The area surrounded by the vertical axis of 0% is designated as the target temperature rise area “▲”, the line connecting both points with the desired rate of 100%, “I want to raise the temperature” is 35%, “Temperature The area surrounded by the line connecting the 65% point to the 0 point and the "Want to increase the temperature" line with the 0% horizontal axis is the target temperature drop region "▼". A region sandwiched between the rising region “▲” and the target temperature decreasing region “▼” is set as the target temperature maintaining region “■”. However, if the number of declarations is small, it is assumed that the user is not dissatisfied with the environment, and the request rate of “I want to lower the temperature” is less than or equal to the first reference value K1 with respect to the total number of users. The area where the request rate is less than or equal to the second reference value K2 is also set as the target temperature maintenance area “■”. In this determination criterion rule, the first reference value K1 and the second reference value K2 vary depending on the energy saving target achievement degree ΔΦ by the energy saving target monitoring device 5 described later.

  The control plan drafting means 43 uses the result of monitoring the energy consumption by the energy saving target monitoring device 5 to perform consensus formation processing according to the above-mentioned criteria rule, and specifically performs processing according to the flowchart of FIG. First, in the energy saving target monitoring measure 5, the energy saving target setting means 52 reads the energy saving target value Φ1 set by the administrator of this system (step S 1), and the energy monitoring means 53 is actually acquired from the air conditioning equipment 1. Is read (step S2). Then, the energy saving target achievement degree calculation means 51 calculates the energy saving degree [Φ2 = (Eo−) from the consumed energy Eo for a predetermined period (for example, one month) estimated from the past results of the same period and the actual consumed energy E. E) / Eo] is calculated (step S3), and then the energy saving target achievement degree [ΔΦ = Φ2-Φ1] is calculated (step S4).

  In the server device 4, the start temperature determination unit 45 determines that the energy that can be consumed has a margin if the calculated energy saving target achievement degree ΔΦ is high, as shown in FIG. 6, and makes the start temperature Ts comfortable. If the energy saving target achievement degree ΔΦ is low, it is determined that there is no room for energy that can be consumed, and the start temperature Ts is set in the energy saving direction (in the direction of increasing the temperature during cooling). ). Then, when information on the start temperature Ts is transmitted to the air conditioning control device 2 and the start temperature Ts is set as the target temperature To of the air conditioning control device 2, the air conditioning control device 2 uses the room temperature sensor 2a that measures the temperature in the space A. The air conditioning equipment 1 is controlled so that the temperature measurement data measured by the room temperature sensor 2a matches the target temperature To = Ts (step S5). Therefore, since the start temperature Ts is set based on the energy saving target achievement degree ΔΦ, the energy saving target achievement degree ΔΦ can be improved efficiently.

  Next, the control plan drafting means 43 sets the first reference value K1 and the second reference value K2 in the determination criterion rule of FIG. 4 according to the energy saving target achievement degree ΔΦ calculated by the energy saving target monitoring device 5 ( Step S6). As shown in FIGS. 7 (a) and 7 (b), if the energy saving target achievement degree ΔΦ is low, the first reference value K1 that is the adoption standard of the request information for increasing the energy consumption is increased, and the energy consumption is reduced. The second reference value K2, which is the adoption criterion for the desired information to be reduced, is reduced to facilitate control in the energy saving direction. On the other hand, if the energy saving target achievement degree ΔΦ is high, the first reference value K1 that is the adoption standard of the request information that increases the energy consumption is reduced, and the second reference value that is the adoption standard of the request information that reduces the consumption energy. Increase K2 to facilitate control in the comfort direction.

  Then, the request information acquisition unit 41 sequentially stores the request information Inf from each input device 3 in the history storage unit 44 (step S7), and the control plan planning unit 43 records the latest request information Inf for each user. It is extracted from the storage means 44 as valid data (step S8), a request rate is calculated from the valid data of these request information Inf, and a consensus building logic based on the determination criterion rule area and the request rate of FIG. Thus, the target temperature To is determined (step S9). That is, the above-calculated desired rate is plotted in the determination criterion rule of FIG. 4, and the current target temperature To is maintained when the plotted position is in the range of ■, and in the case of ▼, the current target temperature To A temperature lower than To by a predetermined value (for example, Δt = 0.5 ° C.) is set as a new target temperature To, and if within the range of ▲, it is increased from the current target temperature To by a predetermined value (for example, Δt = 0.5 ° C.). The new temperature is set as a new target temperature To (step S10). After deriving the target temperature To, the control plan drafting unit 43 updates the feedback information for displaying the control content of the air conditioning by the input device 3 (step S11).

  In this way, the first and second reference values K1 and K2 used for the consensus building logic are set to the energy saving target achievement degree ΔΦ while maintaining the comfort by setting the target temperature To based on the user's request by the consensus building logic. Since the target temperature To is set by correcting the control plan while considering energy saving, it is possible to achieve both comfort and energy saving.

  Then, the new target temperature To (target temperature To = target temperature To ± Δt) is stored in the history storage means 44, and information on the target temperature To is transmitted to the air conditioning control device 2 so that the air conditioning control device 2 has a new information. A process for setting the target temperature To is performed (step S12), and after this process, the process of returning to step S1 and performing the consensus formation process for the target temperature To using the above-described energy saving target achievement degree ΔΦ until the system operation is stopped. Repeat (however, the process of determining the start temperature Ts in step S5 is omitted). The air conditioning control device 2 controls the air conditioning equipment 1 so that the temperature measurement data measured by the room temperature sensor 2a matches the determined target temperature To.

  Further, as indicated by the broken line in FIG. 5, the setting of the first reference value K1 and the second reference value K2 in step S6 is set based on not only the energy saving target achievement degree ΔΦ but also the target temperature To. Thus, the energy saving target achievement degree ΔΦ can be improved efficiently. In this case, in addition to the setting processing of the first and second reference values K1 and K2 based on the energy saving target achievement degree ΔΦ, if the current target temperature To is a value with large energy consumption, a request to increase the energy consumption. The first reference value K1, which is the information adoption standard, is increased, and the second reference value K2, which is the requirement information adoption standard for reducing energy consumption, is reduced, thereby facilitating control in the energy saving direction. The setting process of the first and second reference values K1 and K2 based on the target temperature To can be similarly configured even when the outside air temperature is used instead of the target temperature To.

  In addition, in the said embodiment, although mainly illustrating about the case where the air conditioning equipment 1 is cooling the space A, when the air conditioning equipment 1 heats the space A, "I want you to raise temperature." The request becomes request information Inf for increasing the energy consumption, and the request “I want to lower the temperature” becomes the request information Inf for reducing the energy consumption, and can be processed in the same manner as during cooling.

It is a figure showing the composition of the air-conditioning control system of an embodiment. It is a figure which shows the space of air-conditioning control object same as the above, Comprising: (a) is the example of arrangement | positioning of the air-conditioning equipment in space, (b) is the example of arrangement | positioning of the input device and server apparatus in space. It is a figure which shows the monitor screen of an input device same as the above. It is a figure which shows a judgment standard rule same as the above. It is a figure which shows the flowchart of an air-conditioning control process same as the above. It is a figure which shows the setting process of the starting temperature same as the above. (A) (b) It is a figure which shows the setting process of the 1st, 2nd reference value same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air-conditioning equipment 2 Air-conditioning control apparatus 3 Input device 4 Server apparatus 41 Request information acquisition means 43 Control plan drafting means 45 Start temperature determination means 5 Energy-saving target monitoring apparatus 51 Energy-saving target achievement calculation means 52 Energy-saving target setting means 53 Energy monitoring means A space NT communication network

Claims (3)

An air conditioning equipment that varies the temperature of the air conditioning target space, an air conditioning controller that controls the operation of the air conditioning equipment based on the target temperature, a central controller that sets the target temperature in the air conditioning controller, and the space An input device for inputting a request for the temperature of the space from the user to perform, and an energy saving target monitoring device for monitoring the energy consumption of the air conditioning equipment,
The energy saving target monitoring device includes a target value setting means for setting an energy saving target value for reducing the energy consumption of the air conditioning equipment, an energy monitoring means for measuring the energy consumption of the air conditioning equipment, and an energy saving target value and a measured value of the energy consumption. And a target achievement level calculation means for calculating a target level of energy saving based on
The central controller compares the first reference value with the request information acquisition means for acquiring the user's request from the input device and the target information rate for increasing the energy consumption. The target temperature is changed in a direction to reduce the energy consumption by comparing the second reference value with the rate of the desired information for changing the temperature and reducing the energy consumption, and the first and second reference values are used for the energy saving. An air conditioning control system comprising: a control plan drafting means that changes based on the degree of achievement of the target.   2. The air conditioning control system according to claim 1, wherein the control planning means changes the first and second reference values based on a target achievement level of the energy saving and a target temperature or an outside air temperature.   The central control device includes a start temperature determining unit that determines a start temperature, which is a target temperature set in the air-conditioning control device by the control plan drafting unit at the start of the next operation, based on a degree of achievement of the energy saving target. The air conditioning control system according to claim 1 or 2.

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