JP2010198521A - Energy saving support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that it is difficult to check information of all energy saving target devices although the information of all of the energy saving target devices installed in an energy saving target area has to be checked in a conventional energy saving support technology. <P>SOLUTION: An energy saving support device estimates the state of the energy saving target device installed in the energy saving target area from a research result on a certain specified floor. A sequence of an energy saving strategy to be proposed to employers is in order of cost collection efficiency, and respective introduction times are proposed by defining an energy saving targeted value calculated by year as the previous fiscal year of a year when working electric energy after energy saving exceeds at that point of time. Thus, an energy saving strategy with little economical burden and its introduction time can be proposed to the employers. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an energy saving support device that supports energy saving measures for building equipment.

  One of the causes of global warming is said to be carbon dioxide, and various energy-saving measures are being taken to mitigate the progress. Turning off lights in a room where no one is at home or turning it off at lunchtime in the workplace is one of the energy-saving measures that can be implemented immediately without cost. However, in order to save energy, the user is often burdened with an economic burden by replacing the appliances that have been used up to now with an energy-saving type, which often impedes energy saving measures. In addition, it is good to actually introduce energy-saving equipment, but there is also a problem that it is difficult for the user to know how much energy is saved. Furthermore, there is a problem that users who are not bright in the mechanical device do not know which energy saving measures should be implemented in the first place. Thus, there are Patent Literature 1 and Patent Literature 2 as techniques for solving the above-described problems.

  In the home energy-saving support method and device described in Patent Document 1, first, the user can select an energy-saving measure when the device presents a list of energy-saving measures that can be implemented to the user. After actually introducing the energy-saving measures, the device constantly monitors whether the energy-saving measures are being implemented as originally expected from the amount of energy that can be reduced by the energy-saving measures and the amount of energy actually measured. Then, the result is sequentially notified to the user, so that the user can know how much energy is saved. Furthermore, it is a technique that makes it easier for the user to purchase additional energy-saving equipment by automatically transferring the amount of energy equivalent to the energy-saving measures transferred to a predetermined account.

  In the energy saving support method and system for home use described in Patent Document 2, the contents of the previous Patent Document 1 are expanded. Patent Document 1 discloses a technique for proposing a time for additionally introducing an energy saving measure. To calculate the timing, the number of years of cost recovery calculated from "the remaining amount of bonds of existing energy-saving equipment and the purchase amount planned to be newly introduced" and "reduction costs due to existing energy-saving equipment and equipment to be newly introduced" It is a technology that proposes to users the energy-saving equipment that will be used for 5 to 6 years and the time of introduction.

JP 2001-56804 A JP 2001-344412 A

  In Japan, according to the revised Energy Conservation Law from FY2010, each company is required to save energy by 1% per year. There is a problem that the conventional technology does not comply with this energy saving revision law. In other words, according to the revised Energy Saving Law, the energy saving target becomes stricter every year, but the prior art does not mention changing the energy saving target every year. In addition, since the revised Energy Conservation Law obliges each business operator to save energy, for businesses with offices dispersed in several tens or hundreds of locations, energy conservation measures will be taken as a whole. In order to apply the conventional technology under these conditions, it is necessary to obtain information on all the facilities installed at many energy-saving target bases, but this is practically impossible both in terms of manpower and time. close. In addition, when additional energy-saving devices are introduced in the future to meet energy-saving targets that are becoming stricter year by year, energy-saving targets that are becoming stricter year-by-year are determined if only the devices that can recover the cost in a specified number of years are determined to determine the introduction timing. It is practically difficult to keep clearing.

  The energy saving support device according to the present invention includes a target value calculating means for calculating an energy saving target value for each year based on an actual value of energy consumption in a past fixed period and an energy saving rate imposed for each year, facility information, From the list of energy-saving measures for various stored facilities and the list of energy-saving measures that have the energy-saving effect, apply the measures in order according to the order of introduction of energy-saving measures, and after each year's energy-saving measures to fall within the annual energy-saving target value Energy consumption means after energy saving for calculating the amount of energy used, and maintenance year calculation means for calculating how many years the energy saving target value can be achieved in the implementation state of the energy saving measure.

  Further, preferably, the energy saving support apparatus according to the present invention has the following configuration or function.

  A “target value calculation function” is provided to calculate the energy saving target value for each year from the past power consumption information and the energy saving target annual rate. Then, a “power consumption calculation function” for estimating the equipment status and power consumption in the entire energy saving target is provided from the equipment information investigated only on a specific floor, the purpose of use and the floor area of each floor. In addition, an “energy saving measure order setting function” is provided that outputs an appropriate energy saving measure order from the list of energy saving measures, the equipment status of the entire energy saving target, and the unit price of power charges. Finally, an “energy saving function for energy consumption calculation” and “maintenance years calculation function” that output energy saving measures and their introduction timing will be provided.

  First, for example, energy saving target values for the next 10 years are calculated by the target value calculation function. Next, the number of facility devices existing on the floor to be saved and the amount of power used is estimated by the power consumption calculation function. With the energy saving measure order setting function, the cost recovery years are calculated for each energy saving measure from the energy saving measure list and the number of equipment and energy used on the floor for energy saving that was calculated earlier. Order energy saving measures. From here, it is a stage to estimate the energy saving measures to be introduced in the next 10 years and the time of introduction. First, the expected power consumption when a certain energy-saving measure is implemented is calculated by the function for calculating the energy consumption after energy saving. Next, the number of years that can be maintained with the current energy conservation measures by comparing the energy consumption after the energy conservation measures calculated with the energy conservation function calculation function with the maintenance years calculation function and the energy conservation target values for the next 10 years Is calculated. In the year when the energy saving target value cannot be cleared, new energy saving measures are added again with the energy consumption calculation function after energy saving, and the estimated amount of energy used in this case is calculated. Next, the number of years in which the target value can be cleared is estimated by the maintenance year calculation function. In this manner, the processes of “expected energy consumption after energy saving” and “calculation of maintenance years” are repeated until all energy saving measures are implemented. In addition, it outputs energy saving measures and their introduction timing.

  It is possible to propose to the operator energy saving measures and the introduction timing to keep clearing the energy saving target value. In addition, the operator can know the energy saving effect of the energy saving measures. Furthermore, since the minimum necessary energy-saving measures for clearing the energy-saving target that becomes stricter year by year can be proposed, the economic burden on the operator can be reduced.

1 is a hardware configuration of an energy saving support device according to an embodiment of the present invention. FIG. 2 is a functional block diagram of a program for operating the embodiment of FIG. 1 and the present embodiment. It is an example of the format of energy saving annual rate information, and its content. It is a flowchart of a target value calculation function. It is a table which records the calculation result of a target value calculation function, and is a table used for calculation of an energy saving measure process. It is an example of a format and content of an energy saving measure list. It is an example of the format of the standard floor information, and its content. It is an example of the format of the equipment information, and its content. It is an example of a format of floor information and its contents. It is an example of the format of the coefficient according to a use purpose, and its content. It is a flowchart of the used electric energy calculation function. It is the format of the table which records the calculation result of the used electric energy calculation function. It is a flowchart of an energy saving measure order setting function. It is a format of a table for recording the output result of the energy saving measure order setting function. It is a flowchart of the electric energy consumption calculation function after energy saving. It is the format of the table which records the output result of the power consumption calculation function after energy saving. It is a flowchart of a maintenance year calculation function. It is an example of an output screen.

  FIG. 1 is a hardware configuration of an energy saving support apparatus according to an embodiment of the present invention.

  The input function 0101 is a means for the user to input information to the tool, such as a keyboard and a mouse. The output function 0102 is a means for transmitting the output result of this tool to the user, such as a printer or a monitor. The storage function 0103 is means for storing the program main body of the tool, such as a memory or a hard disk drive, and data used by the tool for calculation. The arithmetic function 0104 is a processor, and is a function responsible for calculation processing.

  As described above, the input function 0101, the output function 0102, the storage function 0103, and the calculation function 0104 are connected to each other by signal lines.

  FIG. 2 is a functional block diagram of the program for operating the embodiment of FIG. 1 and this embodiment. In the following description, 0201 is simply referred to as “program”.

  Reference numeral 0201 denotes a program for realizing the present invention. Data from 0202 to 0209 is used as input information, and the calculation result is output to the output function 0102.

  The program 0201 includes a target value calculation function 0210, a power consumption calculation function 0211, an energy saving measure order setting function 0212, a power consumption after energy saving calculation function 0213, and a maintenance year calculation function 0214. Hereinafter, each content and function will be described.

  First, the input information will be described. The input information is information that the user needs to set in advance when the user uses the tool.

  “0202” is an energy saving annual rate. An example of the content of the energy saving annual rate 2020 is shown in FIG. As shown in this figure, the annual energy saving rate is set for each year. In this example, the energy saving annual rate for this fiscal year is set to 1.0%, and the energy saving annual rate after one year is set to 1.0%. It is necessary to set the number of years for which the energy saving annual rate is set for the number of years for which it is necessary to obtain the results of energy saving measures proposal. For example, if you want to know the results of energy conservation measures for 10 years from this fiscal year, set the energy conservation annual rate for 10 years.

  Returning to FIG. 2, reference numeral 0203 denotes actual usage energy information. This information is input in [kWh] units for the total amount of power used in the past year on all floors where energy conservation measures are planned.

  Reference numeral 0204 denotes reference floor information. When calculating the energy saving effect for a large number of buildings as the reference floor, it is practically difficult to confirm the equipment state for all floors of all buildings. Therefore, the present invention has devised a method for checking the equipment state of a specific floor of a specific building and estimating the equipment state in all buildings based on this. This “specific floor of a specific building” is defined as a reference floor. An example of the contents of the reference floor information 0204 is shown in FIG. The reference floor information records the name of the building having the floor as the reference floor, the floor of the reference floor, and the purpose of use of the room mainly used on the floor. In the case of this example, the second floor of the ABC building is the reference floor, and the purpose of use is the office.

Returning to FIG. 2, 0205 is facility information. An example of the contents of the facility information 0205 is shown in FIG. The equipment information is a table that summarizes the state of equipment on the reference floor, and inputs equipment information, category, rated power, and number of installed equipment. In the equipment information column, the usage status of the equipment such as office lighting and hallway lighting is input. In the category column, enter the classification such as fluorescent light, downlight, emergency guide light. Enter the rated power of the lighting fixture alone in the Rated Power column. In the installed number column, record the number of installed lighting fixtures on the reference floor. In the present embodiment, only lighting fixtures are described for the sake of simplification, but device information other than lighting, such as air conditioners and OA devices, may be input. Although only electric power is described as the energy to be handled, oil such as gas, kerosene and heavy oil can also be handled. Instead of reducing energy, it is possible to reduce CO ₂ . For the same reason, the category types are limited to three types: fluorescent lamps, downlights, and emergency guide lights.

  Returning to FIG. 2, 0206 is floor information. An example of the contents of the floor information is shown in FIG. The floor information is a table format that summarizes the building name, floor, purpose of use, operating hours, annual number of operating days, and floor area ratio for all floors targeted for energy saving. In the building name column, enter the name of the building that has the floor for energy saving. In the floor column, enter the floor number for energy saving. In the purpose of use column, enter the state in which the floor is mainly used. In the present embodiment, the purpose of use is limited to three types: an office, a store, and a bank for the sake of simplicity of explanation. In the operation time column, an operation time per day of a room mainly used on the floor is input. In the annual working days column, enter the annual working days of the room mainly used on the floor. The floor area ratio is the ratio of the floor area of the floor to the reference floor, and the value calculated by Equation 1 is input.

    Floor area ratio = floor area of the floor / floor area of the reference floor

  Returning to FIG. 2, 0207 is a coefficient for each purpose of use. For example, even if the floor area is the same, there may be differences in the amount of lighting power used due to differences in the purpose of use. The coefficient to use. An example of the contents of the purpose-specific coefficients is shown in FIG. In the present embodiment, since there are three types of lighting, fluorescent lamps, downlights, and emergency guide lights, and three purposes of use: office, store, and bank, usage purpose coefficients are set for nine combinations. Here, the coefficient for each purpose of use was set based on the illumination power when used as an office.

  Returning to FIG. 2, reference numeral 0208 denotes an energy saving measure list. An example of the contents of the energy saving measure list is shown in FIG. The energy saving list is a table that summarizes the possible energy saving measures, their categories, energy saving effects, and unit price. In this embodiment, for simplification of explanation, the energy saving measures are limited to three types of inverter equipment, LED lamp, and high-intensity induction lamp. Enter the above energy-saving measures in the energy-saving measures column. In the category column, enter the category of lighting that implements the energy saving measures. In the energy saving effect column, enter the energy saving effect that can be expected from the energy saving measures. In the introduction unit price column, an introduction unit price when introducing the energy saving measure is input.

  Returning to FIG. 2, the electric energy-fee conversion coefficient 0209 will be described. The power amount-rate conversion coefficient is a coefficient for calculating the electricity rate [yen] from the amount of power [kWh]. The actual electricity charge is composed of a basic charge and a pay-as-you-go charge, and is expressed by a more complicated calculation formula, but here, in order to simplify the problem, the electric energy-to-charge conversion coefficient is set by Equation 2. . In addition, you may obtain | require an actual electricity bill instead of Formula 2.

    Electricity amount-fee conversion coefficient = 15 [yen / kWh] Formula 2

  Returning to FIG. 2, the function of each block included in the program 0201 will be described.

  First, the target value calculation function 0210 will be described. The target value calculation function 0210 is a function for calculating an energy saving target value for each year and recording the result in an output table. A flowchart of the target value calculation function 0210 is shown in FIG.

  First, the actual use electric energy is obtained in STEP0401. This value is the value of the actual usage energy information 0203.

  Next, in STEP0402, it loops in the year of the energy saving annual rate information shown in FIG.

  In STEP0403, the energy saving rate for the current year in the table of FIG. 3 is obtained. For example, when the year in the loop is “current year”, the energy saving rate is “1.0%”.

  In STEP0404, the energy saving target value is calculated by Equation 3.

    Energy saving target value [kWh] = Actual power consumption × (1−cumulative energy saving rate) Equation 3

  Here, the “cumulative energy saving rate” is the cumulative value of the energy saving rate from the current fiscal year to the year of interest. In the case of the present embodiment, the cumulative value sequentially increases in this year, such as 1.0% and the next year 2.0%.

  In STEP 0405, the energy saving target value calculated by Equation 3 is recorded in the “energy saving target value” column of the table shown in FIG. In FIG. 5, the row in which the energy saving target value is recorded is the row for the current year in the year loop of STEP0402.

  The above process repeats the year loop of STEP0402 until the year when the energy saving rate data in FIG. 3 is not input. In the table of FIG. 5, each column of “power consumption after energy saving” is left blank at this stage.

  Returning to FIG. 2, the power consumption calculation function 0211 will be described next. The power consumption calculation function 0211 estimates and calculates the number of lighting fixtures used on all the floors of a plurality of energy-saving target buildings and the annual power consumption of lighting, and records the result in an output table. It is a function. FIG. 11 shows a flowchart of the power consumption calculation function.

  First, in STEP 1101, the data in the facility information table on the reference floor shown in FIG. 8 is classified by category.

  Next, in STEP 1102, the process loops in order of category type.

  In STEP 1103, the number of lights and power on the reference floor are calculated for each category using the data in FIG. For example, when the category loop STEP 1102 is “fluorescent lamp”, the processing unit calculates the number of lighting fixtures according to Equation 4. Moreover, electric power is calculated by Formula 5.

Number of fixtures on the standard floor [units] _{Fluorescent lamp} = d ₂ + e ₂ + f ₂ + g ₂ + h ₂ Formula 4
Standard floor power [kW] _{Fluorescent lamp} = Σ (Rated power x Number of units installed)
= D ₁ * d ₂ + e ₁ * d ₂ + f ₁ * f ₂ + g ₁ * g ₂ + h ₁ * h ₂

  In STEP 1104, the number of all lighting fixtures used on all energy-saving floors of a plurality of buildings and their annual power consumption are estimated and calculated. In order to calculate the number of all lighting fixtures and the annual power consumption, the reference floor information shown in FIG. 7, the floor information data shown in FIG. 9, and the coefficient for each purpose of use shown in FIG. 10 are used. For example, when the category loop STEP 1102 is “fluorescent lamp”, the processing unit calculates the lighting fixture using the formula 6. In addition, annual power consumption is calculated using Equation 7.

Total number of lighting fixtures [unit] (fluorescent lamp) = number of fixtures on the standard floor x Σ (area ratio) / area ratio on the standard floor
= (D ₂ + e ₂ + f ₂ + g ₂ + h ₂ ) × (1 + 1 + 1 + 0.5 + 0.8 + 0.8 + 0.4) / 1 Equation 6

Annual power consumption [kWh] (fluorescent lamp)
= Σ (Power on the standard floor x Operating hours x Number of days in the year x Factor for each purpose of use of the floor / Purpose factor for the standard floor x Floor area ratio of the floor / Floor area ratio of the standard floor)
= Standard floor power * 12 * 250 * 1.5 / 1.0 * 1/1
[For ID1 floor in Fig. 9]
+ Reference floor power * 10 * 250 * 1.0 / 1.0 * 1/1
[For floor ID2 in Fig. 9]
+ Reference floor power * 10 * 250 * 1.0 / 1.0 * 1/1
[For floor ID3 in Fig. 9]
+ Standard floor power * 12 * 250 * 1.0 / 1.0 * 0.5 / 1
[For floor ID4 in Fig. 9]
+ Standard floor power * 24 * 365 * 1.2 / 1.0 * 0.8 / 1
[For floor ID5 in Fig. 9]
+ Standard floor power * 24 * 365 * 1.2 / 1.0 * 0.8 / 1
[For floor ID6 in Fig. 9]
+ Standard floor power * 12 * 250 * 1.0 / 1.0 * 0.4 / 1
[For floor ID7 in Fig. 9]
... Formula 7

  Furthermore, in STEP 1105, the number of appliances calculated in Equation 6 and Equation 7 and the annual power consumption are recorded in the table shown in FIG. The table row to be recorded is the row of the category name targeted in the category loop STEP1102.

  The above processing is performed for all categories.

  Returning to FIG. 2, the energy saving measure order setting function 0212 will be described.

  The energy saving measure order setting function 0212 is a function for ordering energy saving measures that can be implemented in descending order of “cost effectiveness”. FIG. 13 shows a flowchart of the energy saving measure order setting function 0212.

  First, in STEP 1301, a loop process is performed with the categories shown in FIG. Hereinafter, the processing content will be described when the category is “fluorescent lamp”. The processing is the same for other categories.

In STEP 1302, the energy saving effect and the introduction unit price of the category are read from the energy saving measure list FIG. In the case of the “fluorescent lamp” category, the energy saving effect is a ₁ [%], and the unit price is a ₂ [10,000 yen / unit].

In STEP 1303, the number of appliances on the floor to be saved and the annual power consumption is read from the table in FIG. In the case of the “fluorescent lamp” category, the number of appliances is m ₁ [unit], and the annual power consumption is m ₂ [kWh].

In STEP 1304, the annual power reduction amount when energy saving measures are implemented is calculated. The reduced power amount is calculated from Equation 8 from the energy saving effect a ₁ [%] read in STEP 1302, the number of appliances m ₁ [unit] and the annual power consumption m ₂ [kWh] read in STEP 1303.

Annual energy saving [kWh / year] = m ₂ * a ₁ Formula 8

  In STEP 1305, the reduced electricity bill is calculated. The reduced electricity bill is calculated by Equation 9 from the reduced power amount [kWh] calculated in STEP 1304 and the power amount-fee conversion coefficient 0209.

Annual reduction of electricity charges [10,000 yen / year]
= Annual power reduction [kWh / year] * Electricity-Charge conversion coefficient [yen / kWh] / 10000
... Equation 9

In STEP 1306, the introduction cost is calculated and temporarily stored. The introduction cost is calculated by Equation 10 from the introduction unit price a ₂ [10,000 yen / unit] read in STEP 1302 and the number of appliances m ₁ [unit] read in STEP 1303.

Introduction cost [10,000 yen] = a ₂ * m ₁ Formula 10

  In STEP 1307, the cost recovery years are calculated and temporarily stored. The cost recovery years are calculated from Equation 11 from the annual reduction electricity charge [10,000 yen] calculated in STEP 1305 and the introduction cost [10,000 yen] calculated in STEP 1306.

Cost recovery years [years]
= Purchase cost [10,000 yen] / annual reduction electricity bill [10,000 yen / year] ・ ・ ・ Formula 11

  The above STEP 1302 to STEP 1307 are performed for all categories.

Finally, in STEP 1308, the cost recovery years of each category stored temporarily are compared, and the categories are ordered in ascending order. Then, the result is recorded in the table of FIG. The table of FIG. 14 is recorded in order from countermeasure order 1 in ascending order of cost recovery years. The table elements are, in addition to the order of measures and energy saving measures, energy saving effects, introduction costs, cost recovery years, and introduction flags. Among these, the energy saving effect, the introduction cost, and the cost recovery year are values read or calculated in the flowchart of FIG. The introduction flag is information indicating whether the process of the energy saving effect using the energy saving measure has been calculated, and is all FALSE (not implemented) at the present stage. Here, it is assumed that the order of decreasing cost recovery years is the order shown in FIG. Note that the energy saving measure order setting function 0212 may be ordered in the descending order of “CO ₂ reduction effect” in addition to “cost effectiveness”.

  Returning to FIG. 2, the post-energy-saving power consumption calculation function 0213 will be described from here. This function is a function for calculating the likelihood of energy saving measures in the order of the energy saving measures obtained by the energy saving measure order setting function 0212. FIG. 15 shows a flowchart of the energy saving use energy calculation function 0213.

  First, in STEP 1501, the introduction flag of the energy saving measure with the earliest measure among the energy saving measures whose introduction flag is FALSE in FIG. 14 is changed to TRUE.

  Next, in STEP 1502, loop processing is performed in the order of countermeasures shown in FIG.

  In STEP 1503, the condition branches depending on the value of the introduction flag of the energy saving measure in the loop processing.

  If the value of the introduction flag in FIG. 14 is TURE, the process proceeds to STEP 1504.

  In STEP 1504, the energy saving effect of the energy saving measure is read from FIG.

  Next, in STEP 1505, the introduction cost of the energy saving measure is read from FIG.

  Further, in STEP 1506, the cost recovery years of the energy saving measures are read from FIG.

  On the other hand, if the introduction flag of the energy saving measure in FIG. 14 is FALSE in STEP 1503, the process proceeds to STEP 1507.

  In STEP 1507, 0% is set to the variable “energy saving effect”.

  Next, in STEP 1508, a value “0” is set to the variable “introduction cost”.

  Further, in STEP 1509, the value “0” is set to the variable “year of cost recovery”.

In STEP 1510, the current power consumption of the category to which the energy saving measure belongs is recorded in the output table of FIG. In FIG. 16, the row in which the current power consumption is recorded is a row in which the energy saving measure is described in the column of the energy saving measure. The current power consumption value is the power consumption recorded in the same category row as the energy saving measure category in FIG. Specifically, for example, when the countermeasure forward loop is “inverter equipment”, it can be seen that the category of inverter equipment is “fluorescent lamp” in FIG. m ₂ [kWh] is read and set in the column of the current power consumption in FIG.

  Next, in STEP 1511, the amount of power used when the energy saving measure is implemented is calculated and recorded. The amount of power used after energy saving is calculated from Equation 12.

Energy consumption after energy saving [kWh]
= Current power consumption [kWh] × (1-energy saving effect [%]) Expression 12

Specifically, when the energy conservation measure is “inverter equipment”
_Inverter power consumption after energy saving [kWh]
= M ₂ * (1-a ₁ ) Equation 13
It becomes. This value is recorded in the column of energy consumption after energy saving in FIG. 16 (in this case, m ₃ [kWh] is described in FIG. 16).

  In STEP 1512, the introduction cost when implementing the energy saving measure is recorded in FIG. The value of the introduction cost is read with reference to FIG. 14 and recorded as it is in FIG.

  In STEP 1513, the cost recovery years when implementing the energy saving measures are recorded in FIG. The value of the cost recovery years is read with reference to FIG. 14 and recorded as it is in FIG.

  The above STEP 1503 to STEP 1513 are implemented for each energy saving measure.

  Returning to FIG. 2, the maintenance year calculation function 0214 will be described. This function is a function that calculates how many years the target value can be achieved in the state of implementing energy-saving measures. A flowchart of the maintenance year calculation function 0214 is shown in FIG.

  First, in STEP 1700, reference is made to FIG. At this time, the table of FIG. 5 is in a state where numerical values are set only in the column of the energy saving target value by the target value calculation function 0210. The current power consumption is set in each cell of “Power consumption after energy saving” in the row of “This year” in this table. These totals are recorded in the “total” column. The current power consumption is read with reference to FIG. Note that STEP 1700 is executed only once for the first time, and this process is skipped when the maintenance year calculation function 0214 is executed for the second time or later.

  In STEP1701, the target year which compares the energy consumption after energy saving with an energy saving target value is selected. To do so, refer to the table of FIG. As the target year, the year farthest from the current year is selected from among the years whose numerical values are set in the “total” column of the table of FIG. When the maintenance year calculation function 0214 is activated for the first time, the target year is “current year”.

  Next, in STEP 1702, the loop processing is sequentially performed from the next year of the target year in the table of FIG.

  Further, in STEP 1703, loop processing is performed as an energy saving measure.

  In STEP 1704, the power consumption after energy saving by the energy saving measure is read with reference to FIG. 16, and this is recorded in FIG. 5 in STEP 1705.

  By executing STEP 1704 and STEP 1705 for each energy saving measure, values are set in all the cells for each energy saving measure of “Power consumption after energy saving” in FIG. Further, in STEP 1706, the total value of the energy consumption after energy saving is calculated and recorded in the “total” column.

  Here, the energy saving target value [kWh] for the next fiscal year is compared with the value [kWh] in the “total” column for the current fiscal year. At this time, if the energy saving target value for the next fiscal year is greater than the value in the “total” column for the current fiscal year, that is, if the current energy saving measures can achieve the energy saving target value for the next fiscal year, return to the top of the fiscal year loop. Steps 1703 to 1707 are executed again with the current year as the target year. On the other hand, if the energy saving target value for the next fiscal year is smaller than the value in the “total” column for the current fiscal year, the current energy saving measures will not meet the energy saving target for the next fiscal year. Therefore, in STEP 1708, referring to FIG. 14, if there is an unimplemented energy saving measure (that is, an energy saving measure with an execution flag of FALSE), the process proceeds to STEP 1709, and the energy consumption used energy amount calculation function 0213 is activated again. New energy-saving measures will be added. On the other hand, referring to FIG. 14, when there is no energy conservation measure that has not been implemented (that is, all implementation flags are TRUE), the process proceeds to STEP 1710 and the calculation results so far are output.

  FIG. 18 is an example of the energy use amount 180 after energy saving for each year, which is the output result of this program. The vertical axis indicates the amount of power used, the horizontal axis indicates the year, and a graph 1801 of the estimated amount of power used after energy saving with respect to the energy saving target value is displayed. For each energy saving measure, the introduction time, the overall energy saving rate, the introduction cost, and the cost recovery year may be displayed.

  A method for calculating the introduction time will be described. Introducing the energy consumption after energy conservation in the column of each energy conservation measure in “Electricity used after energy saving” in FIG. There is a year when the value of decreases. Therefore, the energy saving measures are implemented in the year immediately before the value of the energy consumption after energy saving decreases.

  Next, a method for calculating the overall energy saving rate will be described. The overall energy saving rate is calculated from Equation 14.

Total energy saving rate = Reduced power consumption by the energy conservation measures [kWh] / Current power consumption [kWh]
... Formula 14

Specifically, for example, in the case of “inverter equipment conversion”, the amount of power reduced by the energy saving measures is based on the current power consumption m ₂ [kWh] and the power consumption after energy saving m ₃ [kWh] in FIG. It can be obtained from Equation 15.

Reduced electric energy [kWh] by the energy saving measure = m ₂ −m ₃ Formula 15

  On the other hand, the current power consumption can be obtained by Expression 16 by adding the current power consumption of all the energy saving measures shown in FIG.

Current power consumption [kWh] = m ₂ + n ₂ + o _2.

  From the results of Equation 15 and Equation 16, the overall energy saving rate can be calculated as Equation 17.

Total energy saving rate = Reduced power consumption by the energy conservation measures [kWh] / Current power consumption [kWh]
= (M ₂ −m ₃ ) / (m ₂ + n ₂ + o ₂ ) Equation 17

  The introduction cost and cost recovery years can be obtained by referring to FIG.

0101 Input function 0102 Output function 0103 Storage function 0104 Arithmetic function 0201 Program main body 0202 Energy saving annual rate 0203 Actual usage energy information 0204 Reference floor information 0205 Facility information 0206 Floor information 0207 Coefficient for each purpose of use 0208 Energy saving list 0209 Electric energy-to-charge conversion coefficient 0210 Target value calculation function 0211 Energy consumption calculation function 0212 Energy conservation measure order setting function 0213 Energy consumption usage energy calculation function 0214 Maintenance year calculation function 0180 Energy consumption usage amount after energy conservation 1801 Energy conservation target value Of expected power consumption after energy saving for 1802 Various information by energy saving measures

Claims (7)

In an energy saving support device that supports energy saving measures,
A target value calculation means for calculating an energy saving target value for each year from the actual value of energy consumption in the past fixed period and the energy saving annual rate imposed for each year;
From the facility information and the energy-saving measures for various facilities stored in advance and the list of energy-saving measures that have the energy-saving effect, apply the measures sequentially according to the order of introduction of the energy-saving measures, Energy saving use energy calculation means for calculating energy consumption after each energy saving measure,
A maintenance year calculating means for calculating how many years the energy saving target value can be continuously achieved in the state of implementation of the energy saving measures;
An energy saving support apparatus characterized by comprising:   In the energy saving support apparatus according to claim 1, the means for determining the introduction timing of the energy saving measures is a new period during which the amount of energy used after the energy saving measures in a certain year falls within the energy saving target value after that year. Without introducing energy-saving measures, apply the following energy-saving measures sequentially until the energy consumption after the energy-saving measures falls within the target value according to the order of introduction of energy-saving measures in the following year An energy-saving support device characterized in that the time when the energy saving is introduced is the time when energy-saving measures are introduced.   The energy saving support device according to claim 1 or 2, wherein the energy saving measure list has an introduction cost of each facility, and the order of introduction of the energy saving measures indicates the facility introduction cost as an energy saving measure in the energy saving measure list. An energy-saving support device, which is ordered by the effect and the size of the facility introduction cost recovery year obtained by dividing by the energy reduction cost calculated from the energy unit price separately set.   4. The energy saving support apparatus according to claim 3, wherein the order of introduction of the energy saving measures is set in ascending order of the collection years of the equipment introduction cost.   5. The energy saving support device according to claim 1, wherein the energy saving area is divided into fine areas according to a certain standard, and the divided area is used as reference information, and the facility information is Targeting the area indicated by the reference information, the area list having at least the purpose of use of each divided area and the floor area ratio, and the ratio coefficient of energy usage per unit floor area according to the purpose of use of the divided area The energy consumption of the entire area subject to energy saving is estimated from the facility information of the standard information, the area list, and the ratio information of the energy usage per unit floor area according to the purpose of use. Support device. 6. The energy saving support apparatus according to claim 5, wherein the divided area is a floor of a building, the reference information is information on a specific floor of a specific building, and the area list includes one or a plurality of areas. An energy-saving support device, characterized in that it is a list of floor information that constitutes a building.   7. The energy saving support apparatus according to claim 6, wherein the purpose of use of the divided area is any one of an office room, a store, and a bank store.

Images