JP4816581B2 - Air-conditioner energy-saving analyzer, air-conditioning system, air-conditioner energy-saving analysis method and analysis program - Google Patents

Description

  The present invention relates to an energy saving analyzer, an air conditioning system, an energy saving analysis method for an air conditioner, and an analysis program.

Air conditioners are used in various operating environments, and analysis and diagnosis are required for each air conditioner. For example, in a building such as an office building or a hospital where a plurality of air conditioners are installed, diagnosis of the air conditioning system is performed based on air conditioner operation result data of the air conditioners (for example, Patent Document 1).
JP 2005-003313 A

  By the way, an air conditioner is a device that consumes a large amount of power, and the power consumption is greatly influenced by its operating environment. Therefore, grasping the energy-saving performance of each air conditioner in a building that is used in a variety of environments effectively improves the operating environment of the air conditioner and examines the necessity for refurbishment. Is very important.

  Therefore, the present invention makes it possible to easily and reliably analyze the energy saving performance of each air conditioner, and can easily and efficiently examine the necessity of improvement of the operating environment of the air conditioner and refurbishment. An energy-saving analysis apparatus, an air conditioning system, an energy-saving analysis method, and an analysis program are provided.

An energy-saving analyzer according to a first aspect of the present invention is an energy-saving analyzer that analyzes an energy-saving property of an air conditioner, and includes a reference power consumption setting unit, a first analysis power consumption acquisition unit, a peak detection unit, A peak difference calculation unit, a second analysis power consumption calculation unit, a difference calculation unit, and an energy saving analysis unit. The reference power consumption setting unit sets the reference power consumption in a predetermined time range based on the power consumption acquired for each predetermined time for a plurality of air conditioners. The first analysis power consumption acquisition unit acquires the first analysis power consumption that is the power consumption in the predetermined time range for the air conditioner to be analyzed among the plurality of air conditioners. The peak detection unit detects a peak time of the reference power consumption amount in the predetermined time range. The peak difference calculation unit calculates a peak difference that is a difference between the reference power consumption and the first analysis power consumption at the peak time. The second analysis power consumption calculation unit calculates the second analysis power consumption in the predetermined time range by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time. The difference calculation unit calculates a difference between the reference power consumption and the second analysis power consumption. The energy saving analysis unit analyzes whether or not the energy saving performance of the air conditioner to be analyzed is reduced based on whether or not the difference is included in a predetermined numerical range .

  Here, the difference between the reference power consumption and the second analysis power consumption is the difference between the reference power consumption and the second analysis power consumption at a predetermined time or time group (for example, morning or afternoon) or the integration thereof. Value etc. The subtraction or addition of the peak difference to the first analysis power consumption at each predetermined time means that the peak difference is subtracted from the first analysis power consumption when the peak difference is +, and the first analysis when the peak difference is −. It means adding peak difference to power consumption.

  Here, the energy saving performance of the air conditioner can be analyzed easily and reliably. Therefore, improvement of the operating environment of the air conditioner, examination of necessity for repair, etc. can be performed easily and efficiently.

  The energy-saving analyzer according to the second invention is the energy-saving analyzer according to the first invention, wherein the air conditioner is an indoor unit, and further includes a power consumption calculating unit that calculates the power consumption for each indoor unit.

  Here, since the electric power consumption for every indoor unit can be calculated, the energy-saving analysis for every indoor unit can be analyzed.

  An energy-saving analyzer according to a third aspect of the present invention is the energy-saving analyzer of the first aspect, wherein the energy-saving analysis includes factor determination that affects energy-saving and calculation of the influence degree of the factor.

  Here, the analysis of the energy saving performance includes the determination of the factors affecting the energy saving performance and the calculation of the influence degree of the factors, so that the energy saving performance of the air conditioner can be analyzed more easily and reliably, and the operating environment of the air conditioner can be analyzed. It is possible to easily and efficiently examine the necessity for improvement and refurbishment.

  The energy-saving analyzer according to the fourth invention is the energy-saving analyzer according to the third invention, and the factor is the heat storage load or the sun.

  Here, it is possible to analyze the energy saving performance of the air conditioner more reliably by determining the factors that have the greatest impact on the energy saving performance, and to examine the need for improvement and refurbishment of the operating environment of the air conditioner. Etc. can be performed easily and efficiently.

  An energy saving analysis device according to a fifth invention is the energy saving analysis device according to the first invention, and corrects data in the reference power consumption setting unit or the first analysis power consumption acquisition unit based on the outside air temperature and the set temperature. A data correction unit is further provided.

  Here, by excluding as much influence as possible on the power consumption due to the temperature environment such as the outside air temperature, the inside air temperature, and the set temperature, it is possible to optimize the data that is the basis of the energy saving analysis.

  An energy-saving analyzer according to a sixth invention is the energy-saving analyzer according to the first invention, further comprising an output unit that outputs a result of the energy-saving analysis, and the output unit outputs the result of the analysis as a degree of influence. Are output in ascending or descending order.

  Here, by outputting the results of energy-saving analysis in ascending or descending order of the magnitude of impact, the energy-saving performance of the air conditioner can be analyzed more easily, and the operating environment of the air conditioner can be improved or improved. Necessity can be studied easily and efficiently.

  An air conditioning system according to a seventh aspect includes the energy-saving analyzer according to the first aspect.

An energy saving analysis method according to an eighth invention is an energy saving analysis method for analyzing an energy saving property of an air conditioner, wherein a reference power consumption setting step, a first analysis power consumption acquisition step, a peak detection step, , A peak difference calculating step, a second analysis power consumption calculating step, a difference calculating step, and an energy saving analysis step. In the reference power consumption setting step, for a plurality of air conditioners, a reference power consumption in a predetermined time range is set based on the power consumption acquired at each predetermined time. In the first analysis power consumption acquisition step, the first analysis power consumption, which is the power consumption in the predetermined time range, is acquired for the air conditioner to be analyzed among the plurality of air conditioners. In the peak detection step, a peak time of the reference power consumption in the predetermined time range is detected. In the peak difference calculating step, a peak difference that is a difference between the reference power consumption and the first analysis power consumption is calculated at the peak time. In the second analysis power consumption calculation step, the second analysis power consumption in the predetermined time range is calculated by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time. . In the difference calculation step, a difference between the reference power consumption and the second analysis power consumption is calculated. In the energy saving analysis step, the presence / absence of a decrease in energy saving of the air conditioner to be analyzed is analyzed based on whether or not the difference is included in a predetermined numerical range .

An energy saving analysis program according to a ninth invention is a computer program for analyzing an energy saving property of an air conditioner, wherein a reference power consumption setting step, a first analysis power consumption acquisition step, a peak detection step, , A peak difference calculating step, a second analysis power consumption calculating step, a difference calculating step, and an energy saving analysis step. In the reference power consumption setting step, for a plurality of air conditioners, a reference power consumption in a predetermined time range is set based on the power consumption acquired at each predetermined time. In the first analysis power consumption acquisition step, the first analysis power consumption, which is the power consumption in the predetermined time range, is acquired for the air conditioner to be analyzed among the plurality of air conditioners. In the peak detection step, a peak time of the reference power consumption in the predetermined time range is detected. In the peak difference calculating step, a peak difference that is a difference between the reference power consumption and the first analysis power consumption is calculated at the peak time. In the second analysis power consumption calculation step, the second analysis power consumption in the predetermined time range is calculated by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time. . In the difference calculation step, a difference between the reference power consumption and the second analysis power consumption is calculated. In the energy saving analysis step, the presence / absence of a decrease in energy saving of the air conditioner to be analyzed is analyzed based on whether or not the difference is included in a predetermined numerical range .

  According to the present invention, it is possible to easily and surely analyze the energy saving performance of an air conditioner, and it is possible to easily and efficiently examine the necessity of improvement of the operating environment of the air conditioner or refurbishment. To do.

  FIG. 1 shows an overall configuration diagram of an air conditioning system 100 including an energy-saving analyzer 1 for an air conditioner according to an embodiment of the present invention.

<1. Configuration of air conditioning system>
As shown in FIG. 1, an air-conditioning system 100 includes an air-conditioning control device 70 connected to an energy-saving analysis device 1 for an air conditioner according to the present invention, and an air-conditioning capable of communicating with the air-conditioning control device 70 via a communication line or the like. 2 groups of outdoor units and 3 groups of indoor units. The air conditioning control device 70 is a computer that manages the air conditioners 2 and 3 via a network such as a LAN in a building. The energy-saving analyzer 1 may be provided as a part of the air conditioning control device, or may be provided in a separate computer. The air conditioner is composed of two outdoor units and three indoor units. The indoor unit 3 is installed on the ceiling of each air conditioning target space.

<1.1. Configuration of energy-saving analyzer>
FIG. 2 schematically shows the configuration of the energy-saving analyzer 1. The energy-saving analyzer 1 mainly includes a power consumption calculation unit 10, a power consumption holding unit 11, a reference power consumption setting unit 12, a first analysis power consumption acquisition unit 13, and a peak detection unit 14. A peak difference calculation unit 15, a second analysis power consumption calculation unit 16, a difference calculation unit 17, and an energy saving analysis unit 18. The energy saving analysis apparatus 1 is realized by a computer or the like, and as shown by dotted lines in the figure, each unit includes an arithmetic control unit C including a CPU, a memory M, an output device O such as a monitor and a printer, a keyboard, Arranged in an input device I including a mouse or the like. In the energy-saving analyzer 1, each unit operates according to an analysis program P stored in the memory M in advance.

  The power consumption calculation unit 10 calculates the power consumption for each indoor unit 3. For example, the power consumption is calculated for each indoor unit 3 by apportioning the power consumption measured for each floor or each outdoor unit based on the operation time or by using a measuring instrument for each indoor unit 3. Calculate the power consumption.

  The power consumption holding unit 11 accumulates the power consumption for each indoor unit 3 in the building acquired from the power consumption calculation unit 10 for each predetermined time range in association with the measurement time and the like. In the present embodiment, the predetermined time range is one day.

  The reference power consumption setting unit 12 calculates an average value of the daily power consumption of the plurality of indoor units 3 in the building or a part thereof acquired by the power consumption holding unit 11 for each time. Set as the reference power consumption for minutes. The reference power consumption is grasped as a change curve indicating a change in the Y-axis power consumption for one day with respect to the X-axis time, for example, as indicated by a dotted line in FIGS. In this way, by averaging the power consumption of the plurality of indoor units 3 in the building or a part of the building, it is possible to acquire a reference power consumption that is less influenced by the operating environment such as sunlight and heat storage load.

  The first analysis power consumption acquisition unit 13 operates by receiving a command signal from the input unit 62 as a trigger. Specifically, the first analysis power consumption acquisition unit 13 specifies the current power consumption (hereinafter referred to as the first analysis power consumption) of the indoor unit 3 to be analyzed, which is designated by the command, Obtained via the power consumption calculation unit 10 or the like at every predetermined time, and as shown in FIG. 3A, it is grasped as a change curve of the power consumption for one day as with the reference power consumption.

  The peak detection unit 14 detects the peak time of the reference power consumption received from the reference power consumption setting unit 12.

  The peak difference calculation unit 15 acquires the reference power consumption and the peak time from the peak detection unit 14 and acquires the first analysis power consumption from the first analysis power consumption acquisition unit 13. Then, a peak difference that is a difference between the reference power consumption and the first analysis power consumption at the same peak time is calculated. The peak difference calculation unit 15 also determines whether the peak difference is + or-and holds it.

  When the peak difference is + as shown in FIG. 3A, the second analysis power consumption calculation unit 16 subtracts the peak difference from the first analysis power consumption at each predetermined time. Calculate the analysis power consumption. That is, as shown in FIG. 3A, the second analysis power consumption is calculated so that the peak of the change curve of the first analysis power consumption matches the peak of the change curve of the reference power consumption. The change curve is the result of moving the change curve of the analysis power consumption. On the other hand, when the peak difference is −, the second analysis power consumption is calculated by adding the peak difference to the first analysis power consumption at each predetermined time.

  The difference calculation unit 17 calculates a difference between the reference power consumption and the second analysis power consumption. Here, the difference corresponds to the area of the shape difference between the change curve of the first analysis power consumption and the change curve of the reference power consumption, for example, as shown in FIG. This difference may be calculated as a value obtained by accumulating and integrating the difference for one day of the indoor unit 3 to be analyzed for a predetermined period (for example, 30 days).

  The energy saving property analysis unit 18 analyzes the energy saving property of each air conditioner from the difference or the time or time range corresponding to the difference. Specifically, as shown in FIG. 3B, when the difference exceeds a predetermined numerical range at the morning time, the degree of increase in power consumption due to the heat storage load is large, that is, there is a decrease in energy saving performance. Is determined. On the other hand, when the difference exceeds a predetermined numerical range at the afternoon time, it is determined that there is a decrease in energy saving due to the western sun. Moreover, the influence degree of the energy saving property which the factor by these operating environments gives to an air conditioner is calculated according to the magnitude | size of a difference.

  The monitor 61 is a screen as shown in FIG. 5, for each indoor unit 3, as described above, the factors due to the operating environment (the influence degree of the heat storage load and the influence degree due to the western sun) and the influence degree of the energy saving property of the factor Output in descending order (or ascending order).

  The input unit 62 inputs ID information and the like of the air conditioner to be analyzed to identify the indoor unit 3 to be analyzed, and the energy saving analysis device 1 starts the energy saving analysis process. This input may be input through a predetermined screen. For example, as shown in the output example of FIG. 5, a screen showing the layout of a building air conditioner is displayed, and a command is input to analyze the energy saving of each indoor unit 3, each floor, or the indoor unit 3 in the entire building. . Further, the input unit 62 does not have to be in the same apparatus as the energy saving analysis apparatus 1, and may be input from another terminal through a network.

<1.2. Operation of energy-saving analyzer>
The operation of the energy saving analyzer 1 will be described with reference to the flowchart of FIG.

  First, an analysis command is input via the input unit 62 (step S101). Next, the current power consumption of the indoor unit 3 to be analyzed specified by the analysis command, that is, the first analysis power consumption is acquired via the power consumption calculation unit 10 or the first analysis power consumption acquisition unit 13. (Step S102). On the other hand, the power consumption of the plurality of indoor units 3 in the building or a part thereof is acquired via the power consumption calculation unit 10, the power consumption holding unit 11, etc., and the reference power consumption as described above. Is set in the reference power consumption setting unit 12 (step S103). Then, the peak time of the reference power consumption is detected by the peak detection unit 14 (step S104), and the peak difference that is the difference between the reference power consumption and the first analysis power consumption at the peak time is detected by the peak difference calculation unit 15. Calculated (step S105). Here, the peak difference is determined as +.

  Next, in the second analysis power consumption calculation unit 16, when the peak difference is determined to be +, the second analysis power consumption is calculated by subtracting the peak difference from the first analysis power consumption at each time ( Step S106). Then, the difference calculation unit 17 calculates the difference between the reference power consumption and the second analysis power consumption (step S107).

  Then, as described above, the energy saving property of the indoor unit 3 to be analyzed is calculated (step S108). This series of processing is repeated until there is no indoor unit 3 to be analyzed (steps S102 to S109).

  Note that the flow of processing of the energy-saving analyzer 1 is not limited to the above. For example, the reference power consumption may be acquired in advance.

<1.3. Output example of energy-saving analyzer>
FIG. 5 is an output example in which the processing result of the energy-saving analyzer 1 according to the present embodiment is displayed via the monitor 61. As shown in the figure, for example, the indoor units 3 of the entire building are displayed in descending order of the degree of increase in power consumption due to each factor, that is, energy conservation. In addition, the position of the air conditioner that is estimated to have a high influence on the layout of the building is displayed separately from the mark so that the position of the air conditioner can be easily grasped.

<1.4. Features of energy-saving analyzer>
(1)
In the energy saving analysis apparatus 1 according to the above embodiment, the reference power consumption setting unit 12 sets the reference power consumption, the second analysis power consumption calculation unit 16 calculates the second analysis power consumption, The difference calculation unit 17 calculates the difference between the reference power consumption and the second analysis power consumption, and the energy saving analysis unit 18 analyzes the energy saving based on the difference. As a result, it is possible to easily and reliably analyze the energy saving performance of each air conditioner, and it is possible to easily and efficiently examine the necessity for improvement of the operating environment of the air conditioner and refurbishment.

(2)
Since the energy-saving analyzer 1 according to the embodiment described above further includes the power consumption calculation unit 10 that calculates the power consumption for each indoor unit 3, the power consumption for each indoor unit 3 can be calculated. An energy-saving analysis for each machine 3 can be performed.

(3)
The energy-saving analyzer 1 according to the above embodiment performs a factor determination that affects energy savings and a calculation of the influence degree of factors as an analysis of energy savings, and a heat storage load that has a large influence among factors that affect energy savings. Or, by determining the impact of West Japan, it will be possible to more easily and reliably analyze the energy savings of each air conditioner, making it easier and more efficient to consider the need for improvement and refurbishment of the air conditioner operating environment. To be able to do it automatically.

(4)
The energy saving analysis apparatus 1 according to the above embodiment further includes a monitor 61 that outputs an analysis result of energy saving, and the monitor 61 has an energy saving property that is given to the air conditioner by factors such as a heat storage load and a driving sun. By outputting the degree of influence in ascending order or descending order, it is possible to indicate to the user the factor or degree of energy saving degradation.

<Modification>
(A)
The predetermined time range for setting the reference power consumption is not limited to one day. One month, every season, one year, etc. may be set freely. In addition, the reference power consumption may be an average value of power consumption acquired in a day for a plurality of air conditioners in a building or a part thereof, as in the above-described embodiment. The average value for the number of days may be used. The first analysis power consumption, which is the power consumption of the air conditioner that is the analysis target, may also be an actual measurement value for one day or an average value for a predetermined number of days.

(B)
The reference power consumption does not have to be the average value of the power consumption of the plurality of air conditioners as described above. For example, the power consumption of the reference indoor unit 3 (such as one set in an environment that does not affect energy saving) may be used as the reference power consumption. Further, the reference power consumption may be set and held in advance for each month or season.

(C)
Furthermore, as shown in FIG. 6, the energy saving analyzer 1 may include a data correction unit 19. The data correction unit 19 corrects data in the reference power consumption setting unit 12 and the first analysis power consumption acquisition unit 13. Specifically, the data correction unit 19 stores each of the accumulated data as operation data in a multiple regression equation (E = a · To + b · Ts + c) including a constant obtained from the power consumption obtained from the power consumption holding unit 11. The set temperature Ts of the indoor unit 3 and the corresponding outside air temperature To are substituted as explanatory variables to obtain the estimated power consumption E at each time, and the power consumption obtained as a result is set as the reference power consumption. . This eliminates the influence of the temperature environment such as the outside air temperature, the inside air temperature, and the set temperature, for example, the case where the set temperature is excessively lowered because the outside air temperature is significantly higher than the year-round, and the data is optimized. be able to.

  Moreover, it correct | amends similarly about 1st analysis electric power consumption.

  The present invention makes it possible to easily and surely analyze the energy saving performance of an air conditioner, and to make it possible to easily and efficiently study the necessity of improving the operating environment of the air conditioner or refurbishing. It is useful as a sex analysis device, an air conditioning system, an energy saving analysis method, and an analysis program.

Overall configuration diagram of an air conditioning system according to an embodiment of the present invention The block diagram which shows schematic structure of the energy-saving analyzer based on embodiment of this invention Explanatory drawing of the processing content of the energy-saving analyzer based on embodiment of this invention The flowchart which shows the flow of a process of the energy-saving analyzer based on embodiment of this invention. The figure which shows the output example of the energy-saving analysis apparatus which concerns on embodiment of this invention. The figure which shows a part of modification of the energy-saving analysis apparatus which concerns on embodiment of this invention.

DESCRIPTION OF SYMBOLS 1 Energy-saving analysis apparatus 2 Outdoor unit 3 Indoor unit 10 Power consumption calculating part 11 Power consumption holding | maintenance part 12 Reference power consumption setting part 13 First analysis power consumption acquisition part 14 Peak detection part 15 Peak difference calculation part 16 1st Second analysis power consumption calculation unit 17 Difference calculation unit 18 Energy saving analysis unit 19 Data correction unit 61 Monitor (output unit)
62 Input Unit 70 Air Conditioning Control Device 100 Air Conditioning System

Claims (9)

An energy-saving analyzer (1) for analyzing energy-saving properties of the air conditioner (2, 3),
A reference power consumption setting unit (12) for setting a reference power consumption in a predetermined time range based on the power consumption acquired at predetermined times for the plurality of air conditioners;
A first analysis power consumption acquisition unit (13) that acquires a first analysis power consumption that is a power consumption in the predetermined time range for the air conditioner to be analyzed among the plurality of air conditioners;
A peak detector (14) for detecting a peak time of the reference power consumption in the predetermined time range;
A peak difference calculation unit (15) that calculates a peak difference that is a difference between the reference power consumption and the first analysis power consumption at the peak time;
A second analysis power consumption calculation unit that calculates a second analysis power consumption in the predetermined time range by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time. 16)
A difference calculation unit (17) for calculating a difference between the reference power consumption and the second analysis power consumption;
Based on whether or not the difference is included in a predetermined numerical range, an energy saving analysis unit (18) that analyzes whether there is a decrease in energy saving of the air conditioner to be analyzed;
Comprising
Energy-saving analyzer. The air conditioner is an indoor unit (3),
The energy-saving analyzer of Claim 1 further provided with the power consumption calculating part (10) which calculates the power consumption for every said indoor unit (3).   The energy saving analysis apparatus according to claim 1, wherein the energy saving analysis includes determination of a factor that affects energy saving and calculation of an influence degree of the factor.   The energy-saving analyzer according to claim 3, wherein the factor is a heat storage load or a western day.   The data correction unit (19) according to claim 1, further comprising a data correction unit (19) for correcting data in the reference power consumption setting unit (12) or the first analysis power consumption acquisition unit (13) based on an outside air temperature and a set temperature. Energy-saving analyzer. An output unit (61) for outputting the result of the energy-saving analysis;
The said output part (61) is an energy-saving analyzer of Claim 1 which outputs the result of the said analysis in the ascending order or descending order of the magnitude | size of the influence degree of the said factor.   An air-conditioning system comprising the energy-saving analyzer (1) according to claim 1. An energy-saving analysis method for analyzing energy-saving performance of air conditioners (2, 3),
A reference power consumption setting step for setting a reference power consumption in a predetermined time range based on the power consumption acquired at predetermined times for the plurality of air conditioners;
A first analysis power consumption acquisition step for acquiring a first analysis power consumption that is a power consumption in the predetermined time range for an air conditioner to be analyzed among the plurality of air conditioners;
A peak detection step of detecting a peak time of the reference power consumption in the predetermined time range;
A peak difference calculating step of calculating a peak difference which is a difference between the reference power consumption and the first analysis power consumption at the peak time;
A second analysis power consumption calculating step of calculating a second analysis power consumption in the predetermined time range by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time; ,
A difference calculating step for calculating a difference between the reference power consumption and the second analysis power consumption;
Based on whether or not the difference is included in a predetermined numerical range, an energy-saving analysis step of analyzing whether there is a decrease in energy-saving performance of the air conditioner to be analyzed;
Comprising
Energy-saving analysis method. A computer program for analyzing energy-saving properties of air conditioners (2, 3),
A reference power consumption setting step for setting a reference power consumption in a predetermined time range based on the power consumption acquired at predetermined times for the plurality of air conditioners;
A first analysis power consumption acquisition step for acquiring a first analysis power consumption that is a power consumption in the predetermined time range for an air conditioner to be analyzed among the plurality of air conditioners;
A peak detection step of detecting a peak time of the reference power consumption in the predetermined time range;
A peak difference calculating step of calculating a peak difference which is a difference between the reference power consumption and the first analysis power consumption at the peak time;
A second analysis power consumption calculating step of calculating a second analysis power consumption in the predetermined time range by subtracting or adding the peak difference to the first analysis power consumption at each predetermined time; ,
A difference calculating step for calculating a difference between the reference power consumption and the second analysis power consumption;
Based on whether or not the difference is included in a predetermined numerical range, an energy-saving analysis step of analyzing whether there is a decrease in energy-saving performance of the air conditioner to be analyzed;
Comprising
Energy conservation analysis program.

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