JP2019020094A - Energy evaluation device and energy evaluation method - Google Patents

Abstract

To provide an energy evaluation technique capable of contributing to energy saving sufficiently compared to a conventional one.SOLUTION: When an energy reduction determination unit determines that an outdoor air temperature exceeds an appropriate outdoor air temperature (step S6; YES), it determines that it is not effective to forcedly acquire outdoor air from the viewpoint of cooling efficiency or the like, instructs a BEMS system to reduce the intake of the outdoor air (step S8), and ends processing. Upon receiving an instruction to reduce the intake of outdoor air, the BEMS system checks indoor COconcentration and performs control to reduce an intake amount of outdoor air so as to keep the COconcentration within a range in which the COconcentration does not exceed 1000 ppm (namely, the allowance of COconcentration).SELECTED DRAWING: Figure 5

Description

  The present invention relates to an energy evaluation technique for air conditioning equipment suitable for energy management of buildings such as buildings.

In recent years, large-scale buildings such as office buildings, commercial facilities, hotels, hospitals, and the like have been strongly interested in efforts to reduce energy (that is, energy conservation).
In air conditioning management of these buildings, a building management company performs centralized management with a central monitoring system (hereinafter referred to as “BEMS system”).

  For example, Patent Literature 1 discloses a technology that automatically collects facility data and environmental data using a BEMS system and can automatically control air conditioning management and the like.

WO2010-016610

  In a building where a BEMS system is introduced, it is possible to maintain and manage facilities distributed on the premises by performing remote operation from a central control room, which has a certain effect on energy saving. However, in the current automatic control by BEMS, it is difficult to say that the adjustment accuracy of air conditioning management is low, and energy is wasted due to excessive air conditioning operation by the air conditioning equipment.

  This invention is made | formed in view of the situation demonstrated above, and it aims at providing the energy evaluation technique of the air-conditioning apparatus which can fully contribute to energy saving compared with the past.

  An energy evaluation apparatus that evaluates BEMS that controls the operation of an air conditioner in a target facility according to an aspect of the present invention and performs energy management, and the CO2 concentration in the target facility detected by a CO2 sensor is set. A first determination unit that determines whether or not the CO2 concentration is equal to or less than a reference value, and a second determination that determines whether or not the outside air temperature detected by the outside air temperature sensor exceeds a set appropriate outside air temperature. And the detected CO2 concentration in the target facility is determined to be equal to or lower than the set CO2 concentration reference value, and the detected outside air temperature exceeds the set appropriate outside air temperature. Includes a control unit that instructs the BEMS to limit the intake amount of the outside air so that the outside air is taken in a range that does not exceed the reference value of the CO2 concentration.

In the above configuration, the apparatus further includes a pre-determination unit that determines whether the detected CO ₂ concentration in the target facility is within an appropriate range, and the first determination unit is is CO ₂ concentration in the facility, if it is determined that not within the proper range, the CO ₂ concentration in the target facility to be detected, to or less than the reference value of the CO ₂ concentration is set The second determination unit determines whether or not the detected outside air temperature exceeds the set appropriate outside temperature, and the control unit sets the CO ₂ concentration in the target facility to be detected. is determined to be CO ₂ or less than the reference value of the density that, and the outside air temperature detected is, when it exceeds the appropriate outside air temperature to be set, to the BEMS, exceeds the reference value of the CO ₂ concentration Limit the intake of outside air so that the outside air is taken in to a limited range. It may be.

In the above configuration, when the pre-determination unit determines that the detected CO ₂ concentration in the target facility is not within the appropriate range, the control unit takes in outside air to the BEMS. It may be instructed to maintain the automatic control.

In the above configuration, the control unit further, when the CO ₂ concentration in the target facility to be detected is determined to exceed the reference value of the CO ₂ concentration to be set, to the BEMS While it is forcibly instructed to take in outside air, the detected outside air temperature even when the detected CO ₂ concentration in the target facility is determined to be equal to or lower than the set CO ₂ concentration reference value. However, when the temperature is not more than the set appropriate outside air temperature, the BEMS may be forcibly instructed to take in outside air.

  The above configuration further includes a baseline calculation unit that calculates a baseline, which is a predicted value of energy consumption based on the current energy usage, and the baseline calculation unit performs IPMVP when calculating the baseline. May be used, and explanatory variables not defined in IPMVP may be used.

  In the above configuration, the explanatory variable may include business situation data that clearly indicates the business day and the non-business day of the target facility.

  ADVANTAGE OF THE INVENTION According to this invention, the energy evaluation technique of the air-conditioning apparatus which can fully contribute to energy saving compared with the past can be provided.

It is a figure which shows schematic structure of an energy evaluation system. It is a figure which shows the hardware constitutions of an energy evaluation apparatus. It is the figure which illustrated the sample of base line B1 in air conditioning. It is the figure which illustrated various information contained in baseline related information. It is a flowchart which shows the energy reduction determination process performed by the energy reduction determination part.

  Embodiments according to the present invention will be described below with reference to the drawings. However, the embodiment described below is merely an example, and does not exclude application of various modifications and techniques not explicitly described below. That is, the present invention can be implemented with various modifications without departing from the spirit of the present invention.

A. This embodiment
[Outline of energy-saving driving support technology]
The inventors of the present application use IPMVP (International Performance Measurement & Verification Protocol), which is one of the international standards for diagnosing the operation of air conditioners, in order to objectively and scientifically evaluate the energy saving amount, Explanatory variables (details will be described later) that are not defined in IPMVP are used to improve the prediction accuracy of energy usage. In addition, although mentioned later for details, in this embodiment, the data regarding energy consumption (henceforth "energy data") and the data regarding outside temperature (henceforth "outside air temperature data") are the following (1). ) And (2), and analyze with basic statistics.
(1) Obtain energy data for the past year from the BEMS device.
(2) Acquire external temperature data for the past year in the area where the building to be evaluated exists from the JMA system.

FIG. 1 is a diagram showing a schematic configuration of an energy evaluation system 1000. The energy evaluation system 1000 according to the present embodiment is a system that evaluates the energy consumption associated with the operation of the air conditioner, for example, by managing the operation of the air conditioner provided in the building.
The energy evaluation system 1000 includes a BEMS device 100 that controls the operation of target facility (building, etc.) equipment and performs overall energy management, and an energy evaluation device 700 that performs energy evaluation associated with air conditioning management of the target facility. Yes.

[Energy Evaluation Device 700]
FIG. 2 is a diagram illustrating a hardware configuration of the energy evaluation apparatus 700.
The energy evaluation apparatus 700 is configured by an information processing apparatus such as a personal computer. The energy evaluation apparatus 700 includes a memory 702 such as a ROM or a RAM that stores various control programs executed by the CPU 701, an input device 703 including a keyboard, mouse, operation buttons, and the like, an output device 704 including a liquid crystal panel, A storage device 705 such as a hard disk, a communication device 706 provided with each communication interface, and the like are provided.

  The energy evaluation apparatus 700 provides the functions of the baseline calculation unit 710 and the energy reduction determination unit 720 by causing the CPU 701 to read and interpret / execute software stored in the memory 702 or the like. Further, the energy related information DB 810, the facility use related information DB 820, and the weather information DB 830 are stored in the memory 702 or the like.

The baseline calculation unit 710 calculates a predicted value (baseline) B1 of energy consumption based on the current energy usage. On the other hand, the energy reduction determination unit 720 determines whether energy can be reduced by controlling the intake of outside air based on the CO ₂ concentration obtained by the CO ₂ sensor 300.

[Description of Baseline Calculation Unit 710]
The baseline calculation unit 710 calculates an energy predicted value (baseline) Bl using the following formula (1).
(Baseline) B1 = α * (Cooling Degree Day) CDD + β * (Heating Degree Day) HDD + γ * (Business Status) Bc + δ * (Operation Status Correction) A1 + ε * (Equipment Load Correction) A2 + Const (1)

  As described above, in this embodiment, in calculating the baseline Bl, not only variables based on IPMVP (specifically, cooling degree day CDD and heating degree day HDD) are utilized, but also explanatory variables not defined in IPMVP. (Specifically, the accuracy of the baseline B1 is improved by utilizing the business situation Bc, the operation situation correction A1, and the equipment load correction A2). In addition, the inventors of the present application support energy reduction by utilizing the baseline B1 obtained in the present embodiment, so that 14% ( Compared to conventional products, energy saving is possible (May 2017).

  Here, “cooling degree day CDD” is the sum of the difference between the reference temperature for cooling the room (specifically, using energy usage data for a certain period in the past) and the daily average temperature, “Heating Degree Day HDD” refers to a reference temperature for starting heating (specifically, using energy usage data for a certain period in the past), and a period in which the daily average temperature is lower than the reference temperature is the heating period. This is the sum of the difference between the reference temperature and the average daily temperature for the day when the average daily temperature that appears within this period is lower than the reference temperature. Here, the day with the same cooling degree day CDD means that the same amount of cooling energy is required in the target facility. Therefore, when the cooling energy is different on the same cooling degree day CDD, it can be considered that the cooling energy can be reduced (potential). Therefore, it is possible to effectively reduce the air conditioning energy by analyzing and specifying the conditions (conditions) of such a day. The same applies to not only the cooling degree day CDD but also the heating degree day HDD. In other words, a day with the same heating degree day HDD means that the same amount of heating energy is required in the target facility. Therefore, it can be considered that there is a possibility (potential) that the cooling energy can be reduced when the heating energy is different on the same heating degree day HDD.

  “Business status Bc” distinguishes business days and non-business days. For example, the value of business days (in principle, Monday to Friday) is defined as “1”, and non-business days (in principle, Saturdays). , Sundays and holidays) is defined as “0”. As will be described later, the business situation data indicating the business situation Bc is obtained from the manager of the target facility, and the data is stored in the facility use related information DB 820.

  Further, “operation status correction A1” indicates an item for correcting that the amount of energy used fluctuates due to an increase or decrease in the number of visitors. For example, when the target facility is an office building, the operating condition correction A1 is set based on large holiday information (Golden Week, Bon Festival, New Year's holiday, etc.). The large holiday information is obtained from the manager of the target facility, and the data is stored in the facility use related information DB 820. Of course, the parameters that affect the number of visitors are not limited to large holiday information, but event information (international exhibitions, etc.) in target facilities and surrounding areas, and trouble information (for example, large-scale disasters) Occurrence), various parameters can be employed.

  “Equipment load correction A2” indicates an item for correcting that the amount of energy used fluctuates due to reasons such as equipment maintenance. For example, the equipment load correction A2 is set based on the periodic maintenance information of the target facility (for example, maintenance is performed between 23:00 and 03:00 every three months). The reasons for equipment maintenance include various factors such as emergency maintenance (diagnosis due to equipment failure occurrence), replacement of various devices (sensors, etc.), maintenance software update, etc. in addition to periodic maintenance. In the following description, these are collectively referred to as “facility maintenance information”. The equipment maintenance information is obtained from the manager of the target facility, and the data is stored in the facility use related information DB 820.

FIG. 3 is a diagram illustrating a sample of the base line Bl in cooling.
In FIG. 3, the cooling degree day CDD is shown by a line graph, the amount of cold water used is a vertical bar graph (with hatching), and the base line Bl of the amount of cold water used is shown by a vertical bar graph (without hatching). Various information necessary for obtaining the above-described baseline B1 is stored in the energy related information DB 810, the facility use related information DB 820, the weather data DB 830, and the like. Further, in the following description, when there is no need to particularly distinguish various information necessary for obtaining the baseline Bl, these information are collectively referred to as “baseline related information Br”.

<Baseline related information Br>
FIG. 4 is a diagram illustrating various types of information included in the baseline related information Br.
As shown in FIG. 4, the baseline related information Br includes energy related information Ir, facility use related information If, and weather information Iw.

<Energy related information Ir>
The energy-related information Ir is information related to energy spent for air conditioning management for a certain period in the past (assuming the past year in this embodiment), and includes daily energy usage data D1, air conditioning operating time data D2, It includes room temperature data D3, CO ₂ data D4, humidity data D5, and energy unit price information D6. In the following description, when it is not necessary to distinguish each energy related information Ir, these pieces of information are collectively referred to as “energy data”.

  The daily energy usage data D1 includes the daily average outside air temperature, power usage, chilled water usage, and steam usage in the area where the target facility is located (eg, Tokyo). Upper limit, lower limit), ideal heating value (upper limit, lower limit), and the like. The daily energy usage data D1 is generated by the energy usage meter 600 and supplied to the BEMS system 100. The daily energy usage data D1 accumulated in the BEMS system 100 is transmitted from the BEMS system 100 to the energy evaluation apparatus 700 after obtaining permission from the manager of the target facility.

  The air conditioning operating time data D2 is data indicating the operating time of the air conditioning, and is transmitted from the BEMS system 100 to the energy evaluation apparatus 700 in units of one hour, for example. The room temperature data D3 is data indicating the room temperature detected by the room temperature sensor 400, and is transmitted from the room temperature sensor 400 to the energy evaluation apparatus 700 in units of one hour, for example. The room temperature sensor 400 is installed in each room of the target facility. The energy evaluation apparatus 700 can analyze the room temperature transition using the room temperature sensors 400 of all the rooms, but can also analyze the room temperature transition using only the specific room temperature sensor 400.

The CO ₂ data D4 is data indicating the purpose of complying with laws and regulations such as the Building Management Law and the CO ₂ concentration necessary for analyzing the air-conditioning environment, and is detected by the CO ₂ sensor 300. The CO ₂ sensor 300 is provided in the vicinity of the entrance / exit of each floor, for example. CO ₂ CO ₂ concentration detected by the sensor 300, the CO ₂ sensor 300 as CO ₂ data D4, it is transmitted to the energy evaluation unit 700 for example by the hour. The humidity data D5 is data indicating the humidity detected by the humidity sensor 500, and is transmitted from the humidity sensor 500 to the energy evaluation apparatus 700 in units of one hour, for example. The humidity sensor 500 is installed in each room of the target facility.

  The energy unit price information D6 is information necessary for calculating the energy cost, and each unit price is shown for each category such as steam, cold water, electric power, and steam. The energy unit price information D6 is described in invoice data from each energy company. The energy evaluation device 700 receives bill data including energy unit price information D6 from each energy company via the Internet or the like. The invoice data can be received from each energy company by obtaining permission from the manager of the target facility.

<Facility usage related information If>
The facility use related information If is information related to a target facility for a certain period in the past (assuming the past year is assumed in the present embodiment), such as operation status data D21, equipment load status data D22, business status data D23, and date. It includes another number of visitors data D24 and occupancy rate data D25. The facility use related information If shown below is transmitted from the control center (not shown) of the target facility to the energy evaluation apparatus 700 by obtaining permission from the manager of the target facility. In the following description, when it is not necessary to particularly distinguish each facility use related information If, these pieces of information are collectively referred to as “facility use data”.

  The operation status data D21 is data representing the operation status of the target facility. For example, information for specifying the date and time accompanied by a significant increase in energy consumption, and a large holiday with a significant decrease in energy consumption (for example, (Golden Week, Obon, year-end and New Year)).

  The equipment load status data D22 is information for specifying the date and time that accompanies a significant decrease in energy consumption for reasons such as equipment maintenance. The business status data D23 is information for specifying the business day and non-business day of the target facility, and the value of the business day (Monday to Friday) is “1”, and the non-business day (Saturday, Sunday, holiday). The value is defined as “0”. Daily visitor count data D24 represents the number of people who have entered the target facility, and occupancy rate data D25 is the ratio of the number of tenants actually occupying the number of tenants that can be occupying the entire facility. Is the data that represents.

<Weather information Iw>
The meteorological information Iw is meteorological information for a certain period of time in the area where the target facility exists (hereinafter also referred to as “target area”) (in this embodiment, the past one year is assumed). Information indicating the maximum temperature, minimum temperature, and average temperature is included. The energy evaluation apparatus 700 acquires weather information for a certain past period in the target area by accessing a database of the Japan Meteorological Agency, for example. Note that it is arbitrary from which information source the weather information is obtained.

[Description of Energy Reduction Judgment Unit 720]
<Points of energy reduction>
For example, consider the case of cooling on a day when the outside air temperature is high (specifically, the day when the outside air temperature exceeds the ideal value). When the cooling operation of the air conditioner 200 is controlled so that the room temperature in the facility is kept constant, if outside air having a high temperature is put into the facility, the extra air that has been put in the facility will be extra. Energy for cooling (hereinafter also referred to as “cooling energy”) is required. Therefore, it is desirable not to take in outside air when considering the cooling efficiency. However, when the indoor CO ₂ concentration exceeds the recommended value (for example, 1000 ppm), there is a risk of adversely affecting the human body, such as a decrease in thinking ability and concentration. Therefore, in this embodiment, from the viewpoint of energy efficiency, the intake amount of outside air is controlled so that the indoor CO ₂ concentration does not exceed 1000 ppm in order to maintain an appropriate indoor environment while restricting the intake of outside air. In this way, effective energy reduction is realized. Hereinafter, the details of the energy reduction determination process executed by the energy reduction determination unit 720 will be described with reference to FIG.

<Energy reduction judgment process>
The energy reduction determination unit 720 grasps the CO ₂ concentration detected by the CO ₂ sensor 300 (step S1), and determines whether or not the detected CO ₂ concentration is within an appropriate range (step S2). The proper range of the CO ₂ concentration, for example in view of the recommended value of the CO ₂ concentration in the room, which may be 1000 ppm ± alpha, either set to any range is optional.

Since the detected CO ₂ concentration is within the appropriate range (step S2; YES), the energy reduction determination unit (pre-determination unit) 720 is normally controlled to take in outside air in consideration of the CO ₂ concentration. If it is determined, an instruction is sent to the BEMS system 100 to maintain automatic control of intake of outside air (step S3). The BEMS system 100 continues automatic control of intake of outside air in accordance with an instruction from the energy reduction determination unit 720.

On the other hand, the energy reduction determination unit (first determination unit) 720 normally controls the intake of outside air in consideration of the CO ₂ concentration because the detected CO ₂ concentration is not within the appropriate range (step S2; NO). If it is determined that it is not, it is determined whether or not the detected CO ₂ concentration is equal to or less than the recommended value (reference value; for example, 1000 ppm) of the indoor CO ₂ concentration (step S4). When the detected CO ₂ concentration exceeds 1000 ppm (step S4; NO), the energy determination unit (control unit) 720 clearly determines that the indoor CO ₂ concentration is abnormal. _2. Instruct the BEMS system 100 to forcibly take in outside air in order to lower the concentration (step S5). In this case, the BEMS system 100 may control the intake amount of the outside air in consideration of the current humidity detected by the humidity sensor 400. Note that the BEMS system 100 may forcibly take in the outside air until the indoor CO ₂ concentration becomes 1000 ppm or less, and thereafter, may end the taking in the outside air in consideration of cooling efficiency.

On the other hand, when the detected CO ₂ concentration is 1000 ppm or less (step S4; YES), the energy reduction determination unit (second determination unit) 720 does not recognize that the indoor CO ₂ concentration is abnormal. Therefore, it is determined whether or not the outside air temperature exceeds the appropriate outside air temperature (step S6). Here, the appropriate outside air temperature is set to 25 ° C., for example, in summer, but what value is set can be set / changed according to the system operation. Moreover, the energy reduction determination part 720 calculates | requires the outside temperature in the said time, for example using the outside temperature data of the said target facility obtained from the Meteorological Agency, for example, and it is determined whether the calculated | required outside temperature exceeds the appropriate outside temperature. You may judge. Of course, an outside air temperature sensor (not shown) is installed in the target facility, not an external information source (the Japan Meteorological Agency), and it is determined whether or not the appropriate outside air temperature is exceeded based on the outside air temperature detected by the outside air temperature sensor. Also good.

If the energy reduction determination unit (control unit) 720 determines that the outside air temperature does not exceed the appropriate outside air temperature (step S6; NO), even if the outside air is taken in to reduce the indoor CO ₂ concentration, the cooling energy is greatly increased. Therefore, the BEMS system 100 is instructed to forcibly take in outside air (in other words, the cooling efficiency is not significantly deteriorated) (step S7). By forcibly taking in outside air, for example, the indoor CO ₂ concentration can be lowered to a value sufficiently lower than 1000 ppm (for example, 600 ppm), and the increase in indoor CO ₂ concentration due to insufficient ventilation adversely affects the human body etc. Can be reliably prevented. In this case, the BEMS system 100 may control the intake amount of the outside air in consideration of the current humidity detected by the humidity sensor 400.

On the other hand, when the energy reduction determination unit (control unit) 720 determines that the outside air temperature exceeds the proper outside air temperature (step S6; YES), the influence of the current indoor CO ₂ concentration on the human body, the cooling efficiency, In consideration of the above, it is determined that it is not a good idea to forcibly take in the outside air, and the BEMS system 100 is instructed to restrict the intake of the outside air (step S8), and the processing is terminated. BEMS system 100 receives an instruction to narrow the outside air intake, check the CO ₂ concentration in the room, the CO ₂ concentration is recommended values (i.e., the reference value 1000 ppm) does not exceed the magnitude (CO ₂ concentration Control is performed to reduce the intake amount of outside air so as to be within the margin.

  As described above, in an environment where the outside air temperature exceeds the appropriate outside air temperature, it is possible to reduce the cooling energy and improve the cooling efficiency by reducing the intake amount of the outside air having a high temperature.

  In the above embodiment, the case where the cooling energy is reduced and the cooling efficiency is improved has been described as an example. However, the present invention can be similarly applied to the case where the heating energy is reduced and the heating efficiency is improved.

  Further, in this specification, “unit” does not simply mean a physical configuration, but also includes a case where processing executed by the “unit” is realized by software. Further, even if a process executed by one “unit” or device is realized by two or more physical configurations or devices, a process executed by two or more “units” or devices is performed by one physical means or device. May be realized.

  The steps in each process described above in this specification can be arbitrarily changed in order or executed in parallel as long as the process contents do not contradict each other.

  A program for performing each process described in this specification may be stored in a recording medium. If this recording medium is used, the above program can be installed in a computer (such as the energy evaluation apparatus 700) constituting the energy evaluation system 1000. Here, the recording medium storing the program may be a non-transitory recording medium. The non-transitory recording medium is not particularly limited, but may be a recording medium such as a CD-ROM.

1000 ... Energy evaluation system, 100 ... BEMS system, 200 ... air conditioning equipment, 300 ... CO ₂ sensor, 400 ... temperature sensor, 500 ... temperature sensor, 600 ... energy use meter, 700 ... energy evaluation unit, 710 ... baseline Calculation unit, 720 ... energy reduction determination unit, 810 ... energy related information DB, 820 ... facility use related information DB, 830 ... weather information DB.

Claims (7)

An energy evaluation device that evaluates BEMS that controls the operation of air conditioning equipment in a target facility and performs energy management,
A first determination unit configured to determine whether or not the detected CO ₂ concentration in the target facility is equal to or less than a set CO ₂ concentration reference value;
A second determination unit that determines whether or not the detected outside air temperature exceeds a set appropriate outside air temperature;
The detected CO ₂ concentration in the target facility is determined to be less than or equal to the set reference value of the CO ₂ concentration, and the detected outside air temperature exceeds the set appropriate outside air temperature. And a control unit that instructs the BEMS to limit the intake amount of the outside air so that the outside air is taken in a range that does not exceed the reference value of the CO ₂ concentration. A pre-determination unit that determines whether the detected CO ₂ concentration in the target facility is within an appropriate range;
When the pre-determination unit determines that the CO ₂ concentration in the target facility is not within the appropriate range, the first determination unit determines the detected CO ₂ concentration in the target facility. Determine whether it is below the reference value of the set CO ₂ concentration,
The second determination unit determines whether the detected outside air temperature exceeds a set appropriate outside air temperature,
The controller determines that the detected CO ₂ concentration in the target facility is equal to or less than a reference value of the set CO ₂ concentration, and the detected outside air temperature is set to the appropriate When the outside air temperature is exceeded, the BEMS is instructed to limit the intake amount of the outside air so that the outside air is taken in a range not exceeding a reference value of the CO ₂ concentration. The energy evaluation apparatus described. The controller is
When the pre-determination unit determines that the detected CO ₂ concentration in the target facility is not within the appropriate range, automatic control of the outside air intake should be maintained for the BEMS. The energy evaluation apparatus according to claim 2, which instructs to that effect. The control unit further includes:
When it is determined that the detected CO ₂ concentration in the target facility exceeds the set reference value of the CO ₂ concentration, the BEMS is forcibly instructed to take in the outside air. on the other hand,
Even if it is determined that the detected CO ₂ concentration in the target facility is equal to or less than the reference value of the set CO ₂ concentration, the detected outside air temperature is set to the appropriate outside air to be set. The energy evaluation device according to any one of claims 1 to 3, wherein when the temperature is equal to or lower than the temperature, the BEMS is forcibly instructed to take in the outside air. A baseline calculation unit that calculates a baseline that is a predicted value of energy consumption based on the current energy usage;
The base line calculation unit uses a variable that conforms to IPMVP and uses an explanatory variable that is not defined in the IPMVP when calculating the baseline. The energy evaluation apparatus described.   The energy evaluation apparatus according to claim 5, wherein the explanatory variable includes business situation data that clearly indicates a business day and a non-business day of the target facility. An energy evaluation method for evaluating BEMS that controls the operation of air conditioning equipment in a target facility and performs energy management,
A first determination step of determining whether or not the detected CO ₂ concentration in the target facility is equal to or less than a set CO ₂ concentration reference value;
A second determination step of determining whether or not the detected outside air temperature exceeds a set appropriate outside air temperature;
In the first determination step, it is determined that the detected CO ₂ concentration in the target facility is equal to or less than a set reference value of the CO ₂ concentration, and in the second determination step, the detected When the outside air temperature exceeds the set appropriate outside air temperature, the amount of outside air taken in is adjusted so that the outside air is taken into the BEMS within a range not exceeding the reference value of the CO ₂ concentration. An energy evaluation method including a control step for instructing a limit.

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