Carbon dioxide emission amount calculation system, method therefor, and recording medium for program

Abstract

This carbon dioxide emission amount calculation system obtains the CO2 emission amount of a plant provided with a plurality of facilities, that is, a plant capable of manufacturing a plurality of types of products manufactured through a plurality of steps, and obtains, as the total plant emission amount, the total amount of the CO2 emission amount generated in the plant during a prescribed period of time. The total amount of CO2 emissions generated during the specified period during manufacturing of the product completed during the specified period is determined as the total amount of product emissions, and the difference between the total amount of factory emissions and the total amount of product emissions is determined as the difference amount. And distributing the difference quantity according to the type of each product or according to each device of the factory according to a specified proportion.

Description

Technical Field

[0001] The present invention relates to a carbon dioxide emission calculation system for determining the amount of carbon dioxide emission, a carbon dioxide emission calculation method, and a recording medium of a carbon dioxide emission calculation program. Background Art

[0002] In recent years, from the perspective of global environmental protection, etc., attention has been paid to carbon dioxide emissions (CO2 emissions). The technology related to the carbon dioxide emissions is disclosed in, for example, Patent Document 1. The carbon traceability management system disclosed in Patent Document 1 includes: a utility management unit that records and manages electricity received from the outside, cooling or heating energy received, private power generation equipment operation performance, and cooling or heating equipment operation performance; a material management unit that records and manages material and raw material usage performance; a facility management unit that manages and records the energy used by facilities and equipment during the manufacturing period; a manufacturing execution management unit that manages the production performance of products; an emission calculation unit that calculates greenhouse gas emissions based on the respective performance recorded and managed in the utility management unit, material management unit, facility management unit, and manufacturing execution management unit; and an emission allocation unit that allocates the greenhouse gas emissions calculated by the emission calculation unit to the products as A manufacturing batch of a unit amount of products, wherein boilers, power receiving equipment, private power generation equipment, water supply equipment, etc. are classified as primary power equipment, and in contrast, power equipment that operates by receiving energy supply from the primary power equipment is classified as secondary power equipment, and non-power equipment that operates by receiving energy supply from the primary power equipment and the secondary power equipment is classified as tertiary equipment, the emission allocation unit allocates greenhouse gas emissions of the product batch based on usage of the tertiary equipment corresponding to the product batch and usage of the secondary equipment corresponding to the product batch, and the emission allocation unit includes an emission management unit that manages the greenhouse gas emissions allocated to the product batch as inherent data of the product batch.

[0003] The carbon traceability management system disclosed in Patent Document 1 calculates greenhouse gas emissions during the manufacturing process for each unit of product, or for each product batch. However, in factories capable of producing multiple types of products through multiple processes, the processes may differ depending on the product type, and each product may be manufactured over multiple periods. Therefore, the total carbon dioxide emissions of all products completed during a period may not match the total carbon dioxide emissions of the entire factory during that period. The carbon traceability management system disclosed in Patent Document 1 does not anticipate such situations and is therefore not applicable.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Publication No. 5097728 Summary of the Invention

[0007] The present invention is made in view of the above situation, and its purpose is to provide a carbon dioxide emissions calculation system, a carbon dioxide emissions calculation method and a recording medium recording the carbon dioxide emissions calculation program, so that the total carbon dioxide emissions of all products completed within a specified period are consistent with the total carbon dioxide emissions of the entire factory during the specified period.

[0008] The present invention relates to a system and method for calculating CO2 emissions from a factory equipped with multiple facilities, i.e., a factory capable of manufacturing multiple types of products through multiple processes. The system and method calculate the total amount of CO2 emissions generated by the factory during a specified period as the total factory emissions, and the total amount of CO2 emissions generated during the manufacture of products completed during the specified period as the total product emissions. The system and method calculate the difference between the calculated total factory emissions and the calculated total product emissions as a differential, and distribute the calculated differential at a specified ratio for each product type or for each facility in the factory. The system and method also include a computer-readable recording medium containing a program for causing a computer to function as the CO2 emissions calculation system.

[0009] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a diagram showing the configuration of a carbon dioxide emission calculation system in an embodiment.

[0011] Figure 2 This is a diagram showing an example of a manufacturing process information table.

[0012] Figure 3 This is a diagram showing an example of a product manufacturing performance information table.

[0013] Figure 4 This is a diagram showing an example of a device-related performance information table.

[0014] Figure 5 This is a diagram showing an example of a raw material usage performance information table.

[0015] Figure 6 This is a diagram showing an example of a unit emission amount information table.

[0016] Figure 7This is a diagram for explaining an example of a method for calculating the amount of CO2 emissions from a facility.

[0017] Figure 8 This is a diagram for explaining an example of a method for calculating the unit CO 2 emission amount per unit of equipment.

[0018] Figure 9 This is a diagram for explaining an example of the CO 2 emission amount of each facility (CO 2 emission amount of each process) for each product type.

[0019] Figure 10 It will Figure 9 The CO2 emissions are shown in a matrix format for each product type and each facility.

[0020] Figure 11 This figure is a diagram for explaining an example of total plant emissions, total product emissions, and the difference between them.

[0021] Figure 12 This is a diagram for explaining an example of a calculation method for distributing the difference for each product type.

[0022] Figure 13 This is a flowchart showing the operation of the carbon dioxide emission calculation system.

[0023] Figure 14 This figure is a diagram for explaining an example of a method for calculating the CO 2 emission ratio for each product type when allocating the difference to each facility in a factory.

[0024] Figure 15 This is a diagram for explaining an example of a calculation method for allocating a difference to each device in a factory. DETAILED DESCRIPTION

[0025] One or more embodiments of the present invention are described below with reference to the accompanying drawings. However, the scope of the invention is not limited to the disclosed embodiments. In addition, components assigned the same reference numerals in the various drawings represent the same components, and their descriptions are omitted as appropriate. In this specification, general references are indicated by omitting suffixes, while individual components are indicated by suffixes.

[0026] The carbon dioxide emission calculation system in the embodiment is a system for calculating the carbon dioxide emissions (CO2 emissions) of a factory (workshop) equipped with multiple equipment, that is, the factory that can manufacture multiple types of products manufactured through multiple processes. The carbon dioxide emission calculation system includes a factory total emission calculation unit, a product total emission calculation unit, and a distribution calculation unit. The factory total emission calculation unit calculates the total amount of CO2 emissions generated in the factory during a specified period as the factory total emission. The product total emission calculation unit calculates the total amount of CO2 emissions generated during the manufacturing of products completed within the specified period as the product total emission. The distribution calculation unit calculates the difference between the factory total emission calculated by the factory total emission calculation unit and the product total emission calculated by the product total emission calculation unit as a difference, and distributes the calculated difference according to each type of the product or according to each equipment in the factory at a specified ratio.

[0027] The following describes in more detail the carbon dioxide emissions calculation system, the carbon dioxide emissions calculation method installed in the system, and the recording medium of the carbon dioxide emissions calculation program. Here, as an example, a factory (workshop) that can manufacture multiple varieties of rolled steel plates is used for explanation, but the factory (workshop) can be any factory (workshop) as long as it has multiple equipment and can manufacture multiple types of products manufactured through multiple processes. The carbon dioxide emissions calculation system can be constructed by connecting input and output terminal devices for input and output data, one or more computing processing devices (for example, server devices) that perform various computing processes, and one or more database devices that store (manage) various data in a manner that allows them to communicate with each other. It can also be constructed by integrating at least a part of these input and output terminal devices, one or more computing processing devices, and one or more database devices, and connecting them to the remaining parts in a manner that allows them to communicate with each other. Here, the carbon dioxide emissions calculation system is described by taking the fully integrated carbon dioxide emissions calculation device as an example.

[0028] Figure 1 It is a diagram showing the configuration of a carbon dioxide emission calculation system in an embodiment.

[0029] For example, Figure 1 As shown, the carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example) S in the embodiment includes an input unit 1 , an output unit 2 , an interface unit (IF unit) 3 , a control processing unit 4 a , and a storage unit 5 .

[0030] The input unit 1 is connected to the control processing unit 4a and inputs various commands, such as commands to start calculations, as well as various data required to operate the CO2 emissions calculation device S, such as information on the product manufacturing process and product manufacturing performance, into the CO2 emissions calculation device S. Examples include a keyboard, a mouse, and multiple input switches assigned specific functions. The output unit 2 is connected to the control processing unit 4a and outputs commands and data input from the input unit 1, as well as calculation results, in accordance with the control of the control processing unit 4a. Examples include display devices such as CRT monitors, LCDs (liquid crystal displays), and organic EL displays, and printing devices such as printers.

[0031] Alternatively, the input unit 1 and output unit 2 may be formed of a touch panel. In such a case, the input unit 1 is, for example, a position input device that detects an operation position using a resistive film or electrostatic capacitance method and performs input, while the output unit 2 is a display device. In such a touch panel, the position input device is disposed on the display surface of the display device and displays one or more input content candidates that can be input to the display device. When a user touches a display position showing the desired input content, the position input device detects the position, and the content displayed at the detected position is input to the carbon dioxide emissions calculation device S as the user's operation input content. Such a touch panel allows the user to intuitively understand input operations, thereby providing a user-friendly carbon dioxide emissions calculation device S.

[0032] The IF unit 3 is connected to the control processing unit 4a and, under the control of the control processing unit 4a, performs, for example, data input and output with external devices. Examples of the IF unit 3 include an RS232C serial communication interface circuit, an interface circuit utilizing the Bluetooth (registered trademark) standard, and an interface circuit utilizing the USB (Universal Serial Bus) standard. Alternatively, the IF unit 3 may be a communication interface circuit, such as a data communication card or a communication interface circuit compliant with the IEEE 802.11 standard, for transmitting and receiving communication signals with external devices.

[0033] The storage unit 5 is a circuit connected to the control processing unit 4a and stores various designated programs and various designated data in accordance with the control of the control processing unit 4a. In one example, the various designated programs are recorded on a recording medium such as a CD-R or DVD-R, and are input from the recording medium via the drive device and the IF unit 3 and stored in the storage unit 5.

[0034] The various designated programs include, for example, a control processing program, and the control processing program includes, for example, a control program, a total plant emission calculation program, a total product emission calculation program, and an allocation calculation program. The control program controls each part 1 to 3, 5 of the carbon dioxide emission calculation device S according to the function of each part. The total plant emission calculation program calculates the total amount of CO2 emissions generated in the plant during a specified period as the total plant emission. The total product emission calculation program calculates the total amount of CO2 emissions generated during the specified period in the manufacture of products completed during the specified period as the total product emission. The allocation calculation program calculates the difference between the total plant emission calculated by the total plant emission calculation program and the total product emission calculated by the total product emission calculation program as a difference, and allocates the calculated difference according to the type of each product or to each device in the plant at a specified ratio. The total product emission calculation program includes a device unit emission calculation program, a device emission calculation program, and a total amount calculation program. The facility-specific emission calculation program calculates, for each of a plurality of facilities corresponding to a plurality of processes for manufacturing a product completed within the specified period, a unit CO2 emission per unit of the facility (a first unit CO2 emission per unit) based on the total amount of manufacturing load imposed on the facilities corresponding to the processes and performing the processes during manufacturing within the specified period, and the total amount of CO2 emissions of the facilities related to the total amount of manufacturing load. The facility-specific emission calculation program calculates, for each of a plurality of facilities corresponding to a plurality of processes for manufacturing a product completed within the specified period, the facility CO2 emission per unit of the facility for manufacturing the product completed within the specified period based on the unit CO2 emission per unit of the facility (the first unit CO2 emission per unit) calculated by the facility-specific emission calculation program and the total amount of manufacturing load imposed on the facilities for manufacturing the product completed within the specified period during manufacturing within the specified period. The total amount calculation program calculates the sum of CO2 emissions of each facility calculated by the facility emission amount calculation program for each of a plurality of facilities corresponding to a plurality of processes for manufacturing the product completed within the specified period as the total product emission amount.

[0035] The various specified data include data necessary to execute these programs, such as manufacturing process information, product manufacturing performance information, equipment-related performance information, raw material usage performance information, unit emission information, various calculation results during the calculation process, and final calculation results.

[0036] The storage unit 5 includes, for example, a nonvolatile memory element, such as ROM (Read Only Memory), a rewritable nonvolatile memory element, such as EEPROM (Electrically Erasable Programmable Read Only Memory), and the like. Furthermore, the storage unit 5 includes a RAM (Random Access Memory), which serves as the so-called working memory of the control processing unit 4a and stores data generated during the execution of the designated program. Alternatively, the storage unit 5 may include a hard disk device with a larger storage capacity.

[0037] In order to store manufacturing process information, product manufacturing performance information, equipment-related performance information, raw material usage performance information and unit emission information respectively, the storage unit 5 functionally includes a manufacturing process information storage unit 51, a product manufacturing performance information storage unit 52, an equipment-related performance information storage unit 53, a raw material usage performance information storage unit 54 and a unit emission information storage unit 55.

[0038] Figure 2 This is a diagram showing an example of a manufacturing process information table. Figure 3 This is a diagram showing an example of a product manufacturing performance information table. Figure 3 A is a table showing the production volume by product type. Figure 3 B is a table showing the types of raw materials (raw material types) by category. Figure 4 This is a diagram showing an example of a device-related performance information table. Figure 5 This is a diagram showing an example of a raw material usage performance information table. Figure 6 This is a diagram showing an example of a unit emission amount information table. Figure 6 A shows the unit emission information table of CO2 emission per unit of each raw material. Figure 6 B shows a unit emission amount information table regarding unit CO2 emission amounts per unit of various equipment.

[0039] The manufacturing process information storage unit 51 is used to store manufacturing process information. The manufacturing process information is information (data) indicating the manufacturing process of each product type.

[0040] In this embodiment, the manufacturing process information is stored in a table format in the manufacturing process information storage unit 51. The manufacturing process information table 100 (100-1, 100-2, 100-3, ...) in which the manufacturing process information is registered is as follows, for example: Figure 2As shown, it includes: a process sequence field 101 (101-1, 101-2, 101-3, ...) for registering the sequence of processes; an equipment field 102 (102-1, 102-2, 102-3, ...) for registering the equipment used to perform the processes in the order registered in the process sequence field 101, and has records for each process. The equipment corresponds to the process and is used to perform the process, and is appropriately determined according to the products to be manufactured in the factory. In this embodiment, as described above, since the factory is a factory capable of manufacturing a variety of rolled steel plates, the equipment is, for example, casting equipment, rolling equipment, heat treatment equipment, cutting equipment, etc. In addition, there can be one or more equipment of the same type.

[0041] Furthermore, in this embodiment, the manufacturing process information table 100 is also capable of registering each actual performance in each process for the product of this type. The manufacturing process information table 100 also includes: a weight field 103 (103-1, 103-2, 103-3, ...) for registering the total amount (actual weight) of the manufactured products of this type completed by the equipment used to perform the process of the sequence registered in the process sequence field 101 within a specified period; and a time field 104 (104-1, 104-2, 104b3, ...) for registering the total usage time (total operating time, actual time) required for the equipment used to perform the process of the sequence registered in the process sequence field 101 to manufacture the product of this type completed within the specified period, and a record of the shipment volume (actual shipment volume, production volume (actual production volume)) of the product of this type registered in the weight field 103. In this embodiment, the actual performance value registered in the weight field 103 of the first process is also the total amount of raw materials used to manufacture the product of the specified type during the specified period. In this embodiment, the manufacturing load of a device is expressed as at least one of the amount of manufactured products produced by the device and the time the device is in use. Therefore, the manufacturing load based on the amount of manufactured products is registered in the weight field 103, and the manufacturing load based on the time of use is registered in the time field 104.

[0042] Figure 2 The manufacturing process information tables 100-1, 100-2, and 100-3 for product No. "P001", product No. "P002", and product No. "P003" are shown in the figure, but of course, the manufacturing process information table is prepared in advance for each type of product and stored in the manufacturing process information storage unit 51.

[0043] The product manufacturing performance information storage unit 52 is used to store product manufacturing performance information. This product manufacturing performance information is information (data) indicating the amount of products manufactured (produced) during a specified period for each product type. This product manufacturing performance information is primarily used to calculate the total amount of product emissions. The specified period is pre-set by the user (operator) as appropriate, for example, 10 days, one month, or six months.

[0044] In this embodiment, the product manufacturing performance information is stored in the product manufacturing performance information storage unit 52 in a table format. The product manufacturing performance information table 200 in which the product manufacturing performance information is registered is, for example, Figure 3 As shown in Figure A, the product number field 201a registers the product number, the type field 202a registers the type of product registered in the work-in-process number field 201a, and the production volume field 203a registers the manufacturing volume (production volume) of the product number registered in the work-in-process number field 201a during the specified period. Records are kept for each product number (product type). The product number is an identifier used to identify and distinguish the product type. In this embodiment, as an example, the product types are categorized by product specifications, and therefore, the product number is assigned to each product type (product specification). In this embodiment, the product specifications are categorized by type and customer (orderer). Even if multiple orders are received at different times, if the type and customer are the same, the same product number is assigned to the multiple orders, and the products manufactured in response to the multiple orders are grouped together. In this example, the type is the name of the steel plate, categorized and assigned according to the composition of each steel plate. Alternatively, the types can also be categorized based on factors such as product strength and product size, which are determined by the manufacturing process. Therefore, in this embodiment, the category field 202a includes a product field (product subfield) 2021a for registering products and a customer field (customer subfield) 2022a for registering customers.

[0045] By calculating the sum of each manufacturing quantity (each production quantity) registered in the production quantity field 203 of each record, the total quantity of each product manufactured in the factory during the specified period is calculated. Figure 3 In the example shown, it is 1500 (=800+300+400) [tons].

[0046] Furthermore, in this embodiment, since the CO2 emissions of raw materials are also considered, the product manufacturing performance information storage unit 52 also stores item raw material information. The item raw material information is information (data) indicating the raw materials used when manufacturing a certain item of product.

[0047] In this embodiment, the item raw material information is stored in the product manufacturing performance information storage unit 52 in a table format. The item raw material information table 200b for registering the item raw material information is as follows, for example: Figure 3 As shown in B, it includes a product field 201b for registering a product of the product registered in the product field 201b and a raw material type field 202b for registering the raw materials used when manufacturing the product of the product registered in the product field 201b as raw material types (raw material types), and has a record for each product.

[0048] The equipment-related performance information storage unit 53 is used to store equipment-related performance information. This equipment-related performance information is data indicating the total manufacturing load imposed on equipment in the factory during a specified period, as well as the consumption of consumables associated with the operation of the equipment, i.e., the amount of carbon dioxide emitted by these consumables. This equipment-related performance information is primarily used to calculate the total amount of factory emissions. Consumption can also include monetary expenditures (costs).

[0049] In this embodiment, the equipment-related performance information is stored in the equipment-related performance information storage unit 53 in a table format. The equipment-related performance information table 300 in which the equipment-related performance information is registered is, for example, Figure 4As shown, the data includes: a device name field 301, which registers the device name (device name) used as an identifier to identify and identify the device; a manufacturing load field 302, which registers the total manufacturing load of the device with the device name registered in device name field 301 during the specified period; and a consumption field 303, which registers the amount of consumables consumed by the device with the device name registered in device name field 301. The data contains records for each device (device name). The manufacturing load field 302 has subfields for each unit of manufacturing load, including a weight field (weight subfield) 3021, which registers the total manufacturing load expressed in weight [tons] (the total amount of manufactured products of the device); and a time field (time subfield) 3022, which registers the total manufacturing load expressed in usage time [hrs] (the total usage time of the device). The consumption field 303 has subfields for each type of consumable, including an energy field (energy subfield) 3031, which registers the amount of energy consumed during device operation; and a consumables field (consumables subfield) 3032, which registers the amount of consumables consumed by the device. The energy field 3041 further includes subfields for different energy types, including: an electricity field (electricity subfield) 30311 for registering electricity consumption [kWh]; an LNG field (LNG subfield) 30312 for registering liquefied natural gas (LNG) consumption [kg]; and a steam field (steam subfield) 30313 for registering steam consumption [kg]. The consumables field 3032 further includes subfields for different consumable types, including: a chemicals field (chemical subfield) 30321 for registering chemical consumption; and a lubricant field (lubricant subfield) 30322 for registering lubricant consumption.

[0050] In the above description, consumables are energy and consumables, but these are only examples and can be any substance suitable for the type of factory, type of equipment, etc. In addition, there are kerosene, refractory materials, maintenance work, industrial water, etc.

[0051] The raw material usage performance information storage unit 54 is used to store raw material usage performance information. The raw material usage performance information is data on the amount of raw materials used in the factory during a specified period. The raw material usage performance information is mainly used to calculate the total amount of emissions from the factory.

[0052] In this embodiment, the raw material usage performance information is stored in the raw material usage performance information storage unit 54 in a table format. The raw material usage performance information table 400 in which the raw material usage performance information is registered is as follows, for example: Figure 5 As shown, the raw material type field 401 is provided for registering the raw material type, and the usage amount field 402 is provided for registering the usage amount of the raw material type registered in the raw material type field 401 , and a record is provided for each raw material type.

[0053] The unit emission information storage unit 55 is used to store unit emission information. The unit emission information is a coefficient used to convert the performance values ​​of the above-mentioned product manufacturing performance information, equipment-related performance information, and raw material usage performance information into CO2 emissions, that is, data indicating the unit CO2 emissions per unit (emission coefficient).

[0054] In this embodiment, the unit emission amount information is stored in the unit emission amount information storage unit 55 in a table format. The unit emission amount information table in which the unit emission amount information is registered is, for example, Figure 6 A and Figure 6 As shown in B, two unit emission information tables are included, namely, the first and second unit emission information tables 500a and 500b. In addition, the unit emission information tables can be combined into one table or three or more tables. The number of tables is arbitrary.

[0055] The first unit emission amount information table 500a is a table for registering the CO2 emission amount per unit of the raw material (the second unit CO2 emission amount per unit). Figure 6 As shown in A, it includes a raw material type field 501a for registering the raw material type and an emission coefficient field 502a for registering the second unit CO2 emission amount per unit corresponding to the raw material type registered in the raw material type field 501a, and has a record for each raw material type.

[0056] The second unit emission information table 500b is a table for registering various CO2 emissions per unit (third unit CO2 emissions per unit). In this embodiment, for example, the CO2 emissions per unit of consumables (consumer unit CO2 emissions) are recorded. Figure 6 As shown in B, it includes: a name field 501b for registering a name (consumer name, etc.), an emission coefficient field 503b for the third unit CO2 emission of the name registered in the name field 501b, and a unit field 502b for the unit of the third unit CO2 emission registered in the emission coefficient field 503b, and has records for each name.

[0057] These various data are pre-stored in storage unit 5 before CO2 emissions calculation begins. These various data can be input from input unit 1, from a storage medium (e.g., a USB memory stick or SD card (registered trademark)) storing these various data via IF unit 3, from a recording medium (e.g., a CD-R or DVD-R) recording these various data via its drive and IF unit 3, or from a management server that manages these various data via a communication network and IF unit 3. Actual performance values ​​can be collected and input from equipment, etc., via a communication network and IF unit 3.

[0058] Figure 7 This is a diagram for explaining an example of a method for calculating the amount of CO2 emissions from a facility. Figure 8 This is a diagram for explaining an example of a method for calculating the unit CO 2 emission amount per unit of equipment. Figure 9 This is a diagram for explaining an example of the CO 2 emission amount of each facility (CO 2 emission amount of each process) for each product type. Figure 9 A represents the case of product No. "P001", Figure 9 B represents the case of product No. "P002", Figure 9 C represents the case of product No. "P003". Figure 10 It will Figure 9 The CO2 emissions are shown in a matrix format for each product type and each facility. Figure 11 This figure is a diagram for explaining an example of total plant emissions, total product emissions, and the difference between them. Figure 12 This is a diagram for explaining an example of a calculation method for distributing the difference for each product type.

[0059] Return to Figure 1 The control processing unit 4a is a circuit for controlling each of the components 1-3 and 5 of the carbon dioxide emissions calculation device S according to their respective functions, thereby calculating the CO2 emissions of the target product of the corresponding target type. The control processing unit 4a includes, for example, a CPU (Central Processing Unit) and its peripheral circuits. By executing the control processing program, the control processing unit 4a functionally comprises a control unit 41, a plant emissions calculation unit 42, a product emissions calculation unit 43, and a distribution calculation unit 44. The product emissions calculation unit 43 functionally comprises a facility-specific emissions calculation unit 431, a facility emissions calculation unit 432, and a total amount calculation unit 433.

[0060] The control unit 41 controls the entire carbon dioxide emission calculation apparatus S by controlling the respective units 1 to 3 and 5 of the carbon dioxide emission calculation apparatus according to the functions of the respective units.

[0061] The total factory emissions calculation unit 42 calculates the total amount of CO2 emissions generated by the factory during a specified period as the total factory emissions. For each of the multiple facilities in the factory, the total factory emissions calculation unit 42 calculates the amount of CO2 emissions generated by the use of that facility during the specified period as the individual facility emissions, and calculates the total factory emissions by summing the calculated individual facility emissions. In this embodiment, the total factory emissions calculation unit 42 calculates the total factory emissions by also including at least one of a first total amount of CO2 emissions from raw materials used in the factory during the specified period and a second total amount of CO2 emissions generated during the specified period from specified processes performed on the product.

[0062] More specifically, the total plant emissions calculation unit 42 calculates the total plant emissions based on the facility-related performance information stored in the facility-related performance information storage unit 53 and the unit emissions information stored in the unit emissions information storage unit 55. In this embodiment, for example, the total plant emissions also include a first total amount of CO₂ emissions from raw materials used in the plant during the specified period. Therefore, the total plant emissions calculation unit 42 calculates the total plant emissions based on the facility-related performance information stored in the facility-related performance information storage unit 53, the raw material usage performance information stored in the raw material usage performance information storage unit 54, and the unit emissions information stored in the unit emissions information storage unit 55.

[0063] More specifically, the total plant emissions calculation unit 42 first calculates the total amount of CO2 emissions generated by each of the multiple facilities in the factory during a specified period as the total plant facility emissions. The total plant facility emissions are calculated based on the total amount of consumables associated with the operation of the facility during the specified period, i.e., the total amount of carbon dioxide emissions associated with the consumables, and the third unit CO2 emissions per unit of the consumables.

[0064] For example, in the case where the equipment is named "Smelting and Casting 1", the plant emission total amount calculation unit 42 first extracts the consumption of consumables accompanying the operation of the equipment named "Smelting and Casting 1" from the equipment related performance information stored in the equipment related performance information storage unit 53. Figure 4In the example shown, the total plant emission calculation unit 42 searches and selects the record with the device name "Smelting 1" registered in the device name field 301 from the device-related performance information table 300 stored in the device-related performance information storage unit 53, and extracts the consumption of the consumables registered in the consumption field 303 in the selected record. For example, from the record of "Smelting 1", "25000" [kWh] is extracted as its electricity consumption, "40000" [kg] is extracted as LNG consumption, and "20000" [thousand yen] is extracted as chemical consumption. Next, the total plant emission calculation unit 42 extracts the third unit CO2 emission per unit of the consumables associated with the operation of the device with the device name "Smelting 1" from the unit emission information stored in the unit emission information storage unit 55. Figure 6 In the example shown in B, the total plant emission calculation unit 42 searches for and selects each record in which "electricity", "LNG" and "chemicals" are registered in the name field 501b from the second unit emission information table 500b stored in the unit emission information storage unit 55, and extracts the third unit CO2 emissions per unit of electricity, LNG and chemicals registered in the emission coefficient field 503b and the unit field 502b in each of these selected records, as well as their respective units. The second unit CO2 emissions of electricity (CO2 emissions per unit of electricity) "0.0005" [tCO2 / kWh] are extracted, the second unit CO2 emissions of LNG (CO2 emissions per unit of LNG) "0.004" [tCO2 / kg] are extracted, and the second unit CO2 emissions of chemicals (CO2 emissions per unit of chemicals) "0.01" [tCO2 / thousand yen] are extracted. Next, as shown in FIG. Figure 7As shown, the plant emissions calculation unit 42 multiplies the electricity consumption "25,000" [kWh] by its unit CO2 emissions per electricity "0.0005" [tCO2 / kWh] to obtain the total electricity-related CO2 emissions "13" [tCO2]. It multiplies the LNG consumption "40,000" [kg] by its unit CO2 emissions per LNG "0.004" [tCO2 / kg] to obtain the total LNG-related CO2 emissions "160" [tCO2]. And it multiplies the chemical consumption "20,000" [thousand yen] by its unit CO2 emissions per chemical "0.01" [tCO2 / thousand yen] to obtain the total chemical-related CO2 emissions "200" [tCO2]. In this example, the total electricity-related CO2 emissions are rounded to one decimal place. Then, the total plant emissions calculation unit 42 calculates the total plant emissions of the equipment named "Smelting 1" as "420" [tCO2] by calculating the sum (total) of the total CO2 emissions related to electricity "13" [tCO2], the total CO2 emissions related to LNG "160" [tCO2], and the total CO2 emissions related to chemicals "200" [tCO2]. Figure 4 and Figure 7 In the example shown, the illustration of consumables other than chemicals for the equipment named "Casting 1" is omitted, and by including the total amount of O2 emissions related to the omitted consumables, the total factory equipment emissions of the equipment named "Casting 1" are "420" [tCO2]. Similarly, the total factory equipment emissions of the equipment named "Casting 2" are "160" [tCO2], the total factory equipment emissions of the equipment named "Rolling 1" are "48" [tCO2], the total factory equipment emissions of the equipment named "Rolling 2" are "60" [tCO2], the total factory equipment emissions of the equipment named "Rolling 3" are "56" [tCO2], the total factory equipment emissions of the equipment named "Heat Treatment" are "48" [tCO2], the total factory equipment emissions of the equipment named "Plating" are "25" [tCO2], the total factory equipment emissions of the equipment named "Cutting 1" are "8" [tCO2], and the total factory equipment emissions of the equipment named "Cutting 2" are "7" [tCO2].

[0065] Then, the plant emission total amount calculation unit 42 calculates the total emission amount of the plant by calculating the species (sum) of the total emission amount of each plant facility calculated for each of the plurality of facilities in the plant. Figure 7In the example shown, the total factory emissions calculation unit 42 calculates the total factory emissions "832" [tCO2] by calculating the sum (total) of the total factory emissions "420" [tCO2] of the equipment named "Casting 1", the total factory emissions "160" [tCO2] of the equipment named "Casting 2", the total factory emissions "48" [tCO2] of the equipment named "Rolling 1", the total factory emissions "60" [tCO2] of the equipment named "Rolling 2", the total factory emissions "56" [tCO2] of the equipment named "Rolling 3", the total factory emissions "48" [tCO2] of the equipment named "Heat Treatment", the total factory emissions "25" [tCO2] of the equipment named "Plating", the total factory emissions "8" [tCO2] of the equipment named "Cutting 1", and the total factory emissions "7" [tCO2] of the equipment named "Cutting 2".

[0066] In the present embodiment, for example, the total factory emissions also include the first total amount of CO2 emissions of raw materials used in the factory during the specified period. More specifically, the total factory emissions calculation unit 42 calculates the first total amount of CO2 emissions of raw materials used in the factory during the specified period based on the raw material usage performance information stored in the raw material usage performance information storage unit 54 and the unit emissions information stored in the unit emissions information storage unit 55, and includes the calculated first total amount in the total factory emissions. More specifically, the total factory emissions calculation unit 42 extracts the types of raw materials and their usage amounts from the raw material usage performance information stored in the raw material usage performance information storage unit 54, and extracts the second unit CO2 emissions per unit of the raw material corresponding to the extracted raw material type from the unit emissions information, multiplies the usage amount of each raw material type by the second unit CO2 emissions per unit, and calculates the sum (total) of the multiplication results, thereby including the first total amount of CO2 emissions of the raw materials. In Figure 5 and Figure 6In the example shown in A, the raw material type "A" and its usage amount "500" [tons] and the raw material type "B" and its usage amount "1500" [tons] are extracted from the raw material usage performance information table 400, and the second unit CO2 emission amount "1.2" [tCO2 / ton] per unit of the raw material of raw material type "A" and the second unit CO2 emission amount "0.8" [tCO2 / ton] per unit of the raw material of raw material type "B" are extracted from the first unit emission amount information table 500a. For the raw material of raw material type "A", their multiplication result "600" (=500×1.2) [tCO2] is calculated, and for the raw material of raw material type "B", their multiplication result "1200" (=1500×0.8) [tCO2] is calculated, and the sum of these multiplication results "1800" [tCO2] is calculated as the first total amount of CO2 emissions of the raw materials. The factory emission total amount calculation unit 42 adds the "1800" [tCO2] to the "832" [tCO2] obtained as described above, thereby obtaining the factory emission total amount "2632" [tCO2]. This calculation result is recorded in Figure 11 in the "(A) Period Total" column.

[0067] Return to Figure 1 The total product emission amount calculation unit 43 calculates the total amount of CO 2 emissions generated during the manufacturing of products completed during the specified period as the total product emission amount.

[0068] The total product emissions calculation unit 43 calculates the total product emissions based on the manufacturing process information stored in the manufacturing process information storage unit 51, the actual product manufacturing performance information stored in the product manufacturing performance information storage unit 52, and the unit emission information stored in the unit emission information storage unit 55. In this embodiment, for example, the total plant emissions also include a first total amount of CO2 emissions from raw materials used in the plant during the specified period. Therefore, the total product emissions calculation unit 43 calculates the total product emissions based on the manufacturing process information stored in the manufacturing process information storage unit 51, the actual product manufacturing performance information stored in the product manufacturing performance information storage unit 52, the actual raw material usage performance information stored in the raw material usage performance information storage unit 54, and the unit emission information stored in the unit emission information storage unit 55.

[0069] In this embodiment, the total amount of product emissions is calculated by the facility-specific emissions calculation unit 431, the facility emissions calculation unit 432, and the total amount calculation unit 433. In this embodiment, when the plant emissions calculation unit 42 includes the first total amount to calculate the total plant emissions, the product emissions calculation unit 43 also includes the third total amount of CO₂ emissions from raw materials used in the manufacture of products completed within the specified period to calculate the total product emissions. When the plant emissions calculation unit 42 includes the second total amount to calculate the total plant emissions, the product emissions calculation unit 43 also includes the fourth total amount of CO₂ emissions generated during the specified period from specified processes performed on products completed within the specified period to calculate the total product emissions. When the plant emissions calculation unit 42 includes the first and second total amounts to calculate the total plant emissions, the product emissions calculation unit 43 also includes the third and fourth total amounts to calculate the total product emissions. In the above example, since the total factory emissions calculation unit 42 includes the first total amount to calculate the total factory emissions, the total product emissions calculation unit 43 also includes the third total amount of CO2 emissions of raw materials used in the manufacture of products completed within the specified period to calculate the total product emissions.

[0070] The equipment-unit emission amount calculation unit 431 calculates, for each of the plurality of equipment corresponding to the plurality of processes for manufacturing a product completed within the specified period, the unit CO2 emission amount per unit of the equipment (the first unit CO2 emission amount per unit) based on the total amount of manufacturing load imposed on the equipment corresponding to the process and used to perform the process during manufacturing during the specified period, and the total amount of CO2 emissions from the equipment related to the total amount of manufacturing load. In this embodiment, the equipment-unit emission amount calculation unit 431 calculates, for each of the plurality of equipment corresponding to the plurality of processes for manufacturing a product completed within the specified period, the total amount of CO2 emissions from the equipment related to the total amount of manufacturing load imposed on the equipment during manufacturing during the specified period, based on the total amount of consumables associated with the operation of the equipment during the specified period, i.e., the consumables associated with carbon dioxide emissions, and the third unit CO2 emission amount per unit of the consumables.

[0071] For example, if the total amount of the manufacturing load is represented by the total amount of manufactured products manufactured by the equipment, the equipment-unit emission amount calculation unit 431 calculates the first unit CO2 emission amount per unit of each of the plurality of equipment corresponding to the plurality of processes for manufacturing products completed within the specified period, based on the total amount of manufactured products manufactured by the equipment during the specified period and the total amount of CO2 emissions of the equipment associated with the manufacturing of the total amount of manufactured products. Alternatively, if the total amount of the manufacturing load is represented by the total usage time of the equipment, the equipment-unit emission amount calculation unit 431 calculates the first unit CO2 emission amount per unit of each of the plurality of equipment corresponding to the plurality of processes for manufacturing products completed within the specified period, based on the total usage time spent by the equipment in manufacturing during the specified period and the total amount of CO2 emissions of the equipment associated with the total usage time.

[0072] For example, the equipment unit emission calculation unit 431 first extracts the products completed within the specified period from the product manufacturing performance information stored in the product manufacturing performance information storage unit 52, and extracts a plurality of equipment and their manufacturing loads corresponding to the plurality of processes used to manufacture the products completed within the specified period from the manufacturing process information stored in the manufacturing process information storage unit 51. Figure 2 and Figure 3 In the example shown in A, the product No. "P001", the product No. "P002", and the product No. "P003" are extracted as products completed within the specified period. Figure 8 As shown, as a plurality of equipment and their manufacturing loads corresponding to a plurality of processes for manufacturing the product No. "P001", the product No. "P002", and the product No. "P003", the equipment named "Melting 1" and its manufacturing load "1700" [tons], the equipment named "Melting 2" and its manufacturing load "400" [tons], the equipment named "Rolling 1" and its manufacturing load "1380" [tons] and 120 [hrs], the equipment named "Rolling 2" and its manufacturing load "1380" [tons] and 120 [hrs], the equipment named "Smelting 1" and its manufacturing load "1700" [tons] and 120 [hrs], the equipment named "Smelting 2" and its manufacturing load "400" [tons], the equipment named "Smelting 1" and its manufacturing load "1380" [tons] and 120 [hrs], the equipment named "Smelting 2 ... The equipment named "Rolling 2" and its manufacturing load "2000" [tons] and 210 [hrs], the equipment named "Rolling 3" and its manufacturing load "900" [tons] and 120 [hrs], the equipment named "Heat Treatment" and its manufacturing load "1600" [tons], the equipment named "Plating" and its manufacturing load "840" [tons], the equipment named "Cutting 1" and its manufacturing load "800" [tons], and the equipment named "Cutting 2" and its manufacturing load "800" [tons]. In addition, Figure 2 、 Figure 3 A and Figure 8In the example shown, the manufacturing load of the equipment named "Melting 1" is 1600 (=1040+560), but Figure 2 and Figure 3 In A, the products completed within the specified period other than the product No. "P001", the product No. "P002", and the product No. "P003" are omitted. By including the manufacturing load of the equipment named "Smelting 1" used to manufacture the omitted products, the manufacturing load of the equipment named "Smelting 1" is "1700" [tCO2]. The same applies to the others. Next, the equipment unit emission amount calculation unit 431 calculates the equipment unit emission amount by using Figure 7 The same calculation method as described above is used to calculate the total amount of CO2 emissions of the equipment related to the total amount of manufactured products. The calculation results are also recorded in Figure 8 In addition, when the total amount of the manufacturing load is expressed by the total amount of the manufactured products, the equipment unit emission calculation unit 431 calculates the first unit CO2 emissions per unit of the equipment for each of the multiple equipment corresponding to the multiple processes for manufacturing the products completed within the specified period by dividing the total amount of CO2 emissions of the equipment related to the manufacturing of the total amount of the manufactured products by the total amount of the manufactured products manufactured by the equipment within the specified period ((the first unit CO2 emissions per unit of the equipment) = (the total amount of CO2 emissions of the equipment related to the manufacturing of the total amount of the manufactured products) / (the total amount of the manufactured products manufactured by the equipment within the specified period)). For example, the first unit CO2 emissions per unit of the equipment named "Smelting 1" are as follows Figure 8 It is shown as 420 [tCO2] / 1700 [tons] = 0.247. When the total amount of the manufacturing load is expressed by the total usage time, the equipment unit emission calculation unit 431 divides the total amount of CO2 emissions of the equipment related to the use of the total usage time by the total usage time spent by the equipment in the manufacturing during the specified period, and for each of the multiple equipment corresponding to the multiple processes for manufacturing the products completed during the specified period, calculates the first unit CO2 emissions per unit of the equipment ((the first unit CO2 emissions per unit of the equipment) = (the total amount of CO2 emissions of the equipment related to the use of the total usage time) / (the total usage time spent by the equipment in the manufacturing during the specified period)). For example, the first unit CO2 emissions per unit of the equipment named "Rolling 1" are as follows Figure 8 The figure shows 48[tCO2] / 120[hrs]=0.4. In addition, Figure 8 The "√" shown indicates the 1st unit CO2 emission per unit used in the equipment.

[0073] In addition, Figure 8 For example, the second unit CO2 emissions of each unit [tCO2 / ton] and [tCO2 / hr] of the equipment named "Rolling 1" are calculated, but it is also possible to extract only the second unit CO2 emissions of each unit of the equipment named "Rolling 1" and calculate the second unit CO2 emissions of that unit. For example, for the equipment named "Rolling 1", the second unit CO2 emissions of "0.4" [tCO2 / hr] can be calculated. The user (operator) can set in advance which of the second unit CO2 emissions of each unit [tCO2 / ton] and [tCO2 / hr] is used. For example, it is input from the input unit 1 to the carbon dioxide emissions calculation device S and set, and the equipment unit emissions calculation unit 431 calculates the second unit CO2 emissions corresponding to the set unit.

[0074] The equipment emission amount calculation unit 432 calculates the equipment CO2 emissions of the equipment for manufacturing the products completed within the specified period based on the first unit CO2 emissions per unit of the equipment calculated by the equipment unit emission amount calculation unit 431 and the total amount of manufacturing load imposed on the equipment for manufacturing the products completed within the specified period during the manufacturing process within the specified period. Figure 9 The CO2 emissions of each product and each device are shown in FIG. Figure 9 A represents the CO2 emissions of each device for product No. [P001], Figure 9 B represents the CO2 emissions of each device for product No. [P002], Figure 9 C represents the CO2 emissions of each facility for the product No. [P003]. For example, the CO2 emissions of the facility named "Rolling 1" for the product No. [P001] are 32 [tCO2] by multiplying its manufacturing load 80 [hrs] by the first unit CO2 emissions per unit of the facility named "Rolling 1" "0.4" [tCO2 / hr]. Figure 9 In the table, the CO2 emissions of each device are expressed as values ​​rounded to two decimal places. Figure 9 A to Figure 9 The CO2 emissions of each product and each device shown in C are summed up for each device. Figure 10 As shown in the following example, the CO2 emissions of the equipment are calculated. For example, for the equipment named "Rolling 2", the CO2 emissions of the equipment are calculated. Figure 9 The CO2 emissions of the equipment named "Rolling 2" for the product No. "P001" shown in A are "34.32" [tCO2], Figure 9The CO2 emissions of the equipment named "Rolling 2" for the product No. "P002" shown in B are "20.02" (=8.58+11.44) [tCO2], and Figure 9 The sum of the CO2 emissions "11.44" [tCO2] of the facility named "Rolling 2" for product No. "P003" shown in C is "65.78", which is taken as the facility CO2 emissions of the facility named "Rolling 2".

[0075] In addition, in this embodiment, as described above, the equipment corresponds to the process and is used to perform the process, so Figure 9 A to Figure 9 The CO2 emissions of each product and each equipment shown in C are also the CO2 emissions of each product and each process. The equipment CO2 emissions of the equipment named "Rolling 1" are also the process CO2 emissions in the process corresponding to the equipment named "Rolling 1" (rolling process of Rolling 1 (rolling treatment of Rolling 1)).

[0076] The total amount calculation unit 433 calculates the total amount of CO2 emissions of each device calculated by the device emission amount calculation unit 432 for each of the multiple devices corresponding to the multiple processes of manufacturing the product completed within the specified period as the total amount of product emissions. Figures 8 to 10 In the example shown, the total amount calculation unit 433 calculates the equipment CO2 emissions of the equipment named "Smelting 1" as "395.20" [tCO2], the equipment CO2 emissions of the equipment named "Smelting 2" as "152" [tCO2], the equipment CO2 emissions of the equipment named "Rolling 1" as "51.2" [tCO2], the equipment CO2 emissions of the equipment named "Rolling 2" as "65.78" [tCO2], and the equipment CO2 emissions of the equipment named "Rolling 3". The total CO2 emissions of the product are “804.92” [tCO2], which is the sum of the CO2 emissions of the equipment named “heat treatment” “50.4” [tCO2], the CO2 emissions of the equipment named “plating” “22.80” [tCO2], the CO2 emissions of the equipment named “cutting 1” “8” [tCO2], and the CO2 emissions of the equipment named “cutting 2” “6.30” [tCO2].

[0077] Furthermore, in this embodiment, as described above, since the total plant emissions also include the first total CO2 emissions from raw materials used in the plant during the specified period, the total amount calculation unit 433 of the total product emissions calculation unit 43 also includes the third total CO2 emissions from raw materials used in the manufacture of products completed during the specified period to calculate the total product emissions. More specifically, in this embodiment, since the performance value registered in the weight field 103 of the first process in the manufacturing process information table 100 also represents the total amount of raw materials used in the manufacture of products during the specified period, the total amount calculation unit 433 uses the manufacturing process information table 100 stored in the manufacturing process information storage unit 51, the product manufacturing performance information and product type raw material information stored in the product manufacturing performance information storage unit 52, and the unit emission information stored in the unit emission information storage unit 55 to calculate the third total CO2 emissions from raw materials used in the manufacture of products completed during the specified period, and also includes this calculated third total amount in the total product emissions.

[0078] More specifically, the total quantity calculation unit 433 first extracts the products and their types completed within the specified period from the product manufacturing performance information table 200a stored in the product manufacturing performance information storage unit 52. Figure 3 In the example shown in A, the following are extracted: product No. "P001" and product "H1", product No. "P002" and variety "H3", and product No. "P003" and variety "H4". Next, the total amount calculation unit 433 extracts the actual performance value registered in the weight field 103 of the first process in the manufacturing process information table 100 corresponding to each product completed within the specified period as the total amount of raw materials for the product. Figure 2 In the example shown, the total amount of raw materials for product No. "P001" is "1040" [tons], the total amount of raw materials for product No. "P002" is "380" [tons], and the total amount of raw materials for product No. "P003" is "560" [tons]. Next, the total amount calculation unit 433 extracts the type of raw materials for each product completed within the specified period from the variety raw material information stored in the product manufacturing performance information storage unit 52. Figure 3 A and Figure 3 In the example shown in B, the raw material type "B" of the raw material of product No. "P001", the raw material type "A" of the raw material of product No. "P002", and the raw material type "A" of the raw material of product No. "P003" are extracted. Next, the total amount calculation unit 433 extracts the second unit CO2 emission per unit of the raw material of each raw material type from the unit emission information stored in the unit emission information storage unit 55. Figure 6In the example shown in A, the second unit CO2 emissions per unit of raw material type "A" are "1.2" [tCO2 / ton], and the second unit CO2 emissions per unit of raw material type "B" are "0.8" [tCO2 / ton]. The total amount calculation unit 433 then multiplies the total amount of raw materials for each product completed within the specified period by the second unit CO2 emissions per unit of the raw materials for that product to calculate the CO2 emissions of the raw materials for that product. Furthermore, the total amount of CO2 emissions calculated for each product completed within the specified period is calculated (the sum of the CO2 emissions calculated for each product). In the above example, the CO2 emission amount "832" (= 1040 [tons] × 0.8 [tCO2 / ton]) [tCO2] of the raw materials of the product No. "P001", the CO2 emission amount "456" (= 380 [tons] × 1.2 [tCO2 / ton]) [tCO2] of the raw materials of the product No. "P002", and the CO2 emission amount "672" (= 560 [tons] × 1.2 [tCO2 / ton]) [tCO2] of the raw materials of the product No. "P003" are calculated, and the sum of these "1960" [tCO2] is calculated as the third total amount. The total amount calculation unit 433 calculates the total product emission amount "2764.92" [tCO2] by adding this "1960" [tCO2] to the "804.92" [tCO2] calculated as described above. The calculation result is recorded in Figure 11 The total amount of each product is in the column “(B) Total of each product”.

[0079] Return to Figure 1 The distribution calculation unit 44a calculates the difference between the total plant emissions calculated by the second plant total emissions calculation unit 42 and the total product emissions calculated by the total product emissions calculation unit 43 as a difference, and distributes the calculated difference at a specified ratio for each product type or for each device in the factory. In this embodiment, for example, the distribution calculation unit 44a distributes the calculated difference according to the CO2 emission ratio of each product type, thereby distributing the calculated difference at a specified ratio for each product type.

[0080] For example, in the above example, if Figure 12As shown, the allocation calculation unit 44a first calculates the difference "-132.92" [tCO2] between the total plant emissions "2632" [tCO2] calculated by the total plant emissions calculation unit 42 and the total product emissions "2764.92" [tCO2] calculated by the total product emissions calculation unit 43. Next, the allocation calculation unit 44a calculates the CO2 emission ratio for each product completed within the specified period. For example, for product No. "P001," the sum (total) of the facility CO2 emissions "1189.6" (= 832 + 256.88 + 32 + 34.32 + 26.4 + 8) [tCO2] calculated for each of the multiple facilities corresponding to the multiple processes used to manufacture the product is calculated and divided by the total product emissions "2764.92" [tCO2] to obtain a CO2 emission ratio "0.43" for product No. "P001." Furthermore, the allocation calculation unit 44a multiplies the CO2 emission ratio of each product completed within the specified period by the calculated difference to calculate the allocation amount allocated to the product, and adds the amount to the product (if the allocation amount is a positive number, the above "addition" indicates addition, and if the allocation amount is a negative number, the above "addition" indicates subtraction). For example, for product No. "P001", the difference "-132.92" [tCO2] is multiplied by the CO2 emission ratio "0.43" of the product No. "P001" to calculate the allocation amount "-57.19" [tCO2] of the product No. "P001", and the amount is added to the CO2 emission amount "1189.6" [tCO2] of the product No. "P001". The CO2 emissions of product No. "P001" after allocation are "1132.41" (=1189.60 - 57.19) [tCO2]. Similarly, the allocation amount of product No. "P002" is "-32.37" [tCO2], and the CO2 emissions of product No. "P002" after allocation are "640.9" (=673.27 - 32.37) [tCO2]. The allocation amount of product No. "P003" is "-43.36" [tCO2], and the CO2 emissions of product No. "P003" after allocation are "858.69" (=902.05 - 43.36) [tCO2]. Therefore, the total amount of product emissions after allocation is "2632" (=1132.41+640.9+858.69) [tCO2], which is consistent with the total emissions from the factory.

[0081] Then, the control unit 41 outputs the calculation results of each calculation unit 42, 43, and 44a from the output unit 2. For example, when the output unit 2 is a display device, the calculation results of each calculation unit 42, 43, and 44a are displayed on the screen of the display device. Alternatively, for example, when the output unit 2 is a printing device, the calculation results of each calculation unit 42, 43, and 44a are printed on paper by the printing device and output as a form. For example, Figure 9 A. Figure 9 B. Figure 9 C and Figure 12 The diagram shown is output as a display or form.

[0082] Furthermore, the control unit 41 may output the calculation results of the calculation units 42 , 43 , and 44 a to an external device via the IF unit 3 as needed.

[0083] The input unit 1, output unit 2, IF unit 3, control processing unit 4a, and storage unit 5 of a CO2 emissions calculation device S, which is an example of a CO2 emissions calculation system, can be implemented by, for example, a desktop or laptop computer. Of course, as described above, the CO2 emissions calculation system can also be implemented by multiple computers connected for communication.

[0084] Next, the operation of this embodiment will be described. Figure 13 This is a flowchart showing the operation of the carbon dioxide emission amount calculation system (a carbon dioxide emission amount calculation device as an example thereof).

[0085] Once powered on, the CO2 emissions calculation device S, configured in this manner, initializes its necessary components and begins operation. Executing its control processing program, the control processing unit 4a functionally comprises a control unit 41, a plant emissions calculation unit 42, a product emissions calculation unit 43, and a distribution calculation unit 44. The product emissions calculation unit 43 functionally comprises a facility-specific emissions calculation unit 431, a facility emissions calculation unit 432, and a total amount calculation unit 433.

[0086] exist Figure 13 In the embodiment, the carbon dioxide emission calculation device S first calculates the total factory emission amount by the factory emission total amount calculation unit 42 of the control processing unit 4a (S1). In this embodiment, the total factory emission amount is calculated by also including the first total amount of CO2 emissions from raw materials used in the factory during a specified period.

[0087] Next, the carbon dioxide emission calculation device S calculates the first unit CO2 emission (S2) per unit of each device in the multiple devices corresponding to the multiple processes for manufacturing the products completed within the specified period through the device unit emission calculation unit 431 of the total product emission calculation unit 43 of the control processing unit 4a.

[0088] Next, the carbon dioxide emission calculation device S calculates the equipment CO2 emissions (S3) of the equipment for manufacturing the products completed within the specified period for each of the multiple equipment corresponding to the multiple processes for manufacturing the products completed within the specified period through the equipment emission calculation unit 432 of the total product emission calculation unit 43 of the control processing unit 4.

[0089] Next, the CO2 emissions calculation device S controls the total amount calculation unit 433 of the total amount product emissions calculation unit 43 of the processing unit 4a to calculate the total amount of CO2 emissions per facility, calculated by the facility emissions calculation unit 432, for each of the plurality of facilities corresponding to the plurality of processes used to manufacture the product completed within the specified period, as the total amount of product emissions (S4). In this embodiment, the total amount of product emissions is also calculated by including a third total amount of CO2 emissions from raw materials used in the manufacture of the product completed within the specified period.

[0090] Next, the carbon dioxide emission calculation device S calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit 42 in processing S1 and the total product emissions calculated by the total product emissions calculation unit 43 in processing S4 through the distribution calculation unit 44a of the control processing unit 4a, and calculates the distribution amount of each type of the product based on the CO2 emission ratio of each type of the product, and distributes the calculated difference according to the type of each product (S5a).

[0091] Then, the carbon dioxide emission amount calculation device S outputs each calculation result from the output unit 2 via the control unit 41 of the control processing unit 4a (S6), and ends the processing.

[0092] As described above, the CO2 emissions calculation system (CO2 emissions calculation device as an example thereof) S according to the embodiment, and the CO2 emissions calculation method and CO2 emissions calculation program implemented therein, distribute the difference between the total factory emissions and the total product emissions, i.e., the difference, at a specified ratio for each product type. Therefore, the distributed total factory emissions and the total product emissions are consistent. In other words, the CO2 emissions calculation system (CO2 emissions calculation device) S, CO2 emissions calculation method, and CO2 emissions calculation program described above can make the total CO2 emissions of all products completed during a specified period consistent with the total CO2 emissions of the entire factory during that specified period.

[0093] The above-mentioned carbon dioxide emission calculation system (carbon dioxide emission calculation device) S, carbon dioxide emission calculation method and carbon dioxide emission calculation program can allocate the above-mentioned difference according to each product type, so when the CO2 emissions are totaled by product type, the two can also be made consistent.

[0094] The above-mentioned carbon dioxide emission calculation system (carbon dioxide emission calculation device) S, carbon dioxide emission calculation method and carbon dioxide emission calculation program also include the first total amount of CO2 emissions of raw materials used in the factory within the specified period to calculate the total factory emissions, and also include the third total amount of CO2 emissions of raw materials used in the manufacture of products completed within the specified period to calculate the total product emissions. Therefore, the CO2 emissions of parts that cannot be associated with the equipment can be taken into account.

[0095] In the above description, the CO2 emissions calculation system (an example of a CO2 emissions calculation device) S includes a distribution calculation unit 44a that distributes the calculated difference at a specified ratio for each product type. However, the system may also include a distribution calculation unit 44b that distributes the calculated difference at a specified ratio for each facility in the factory (a modified embodiment). This CO2 emissions calculation system (CO2 emissions calculation device) S, the CO2 emissions calculation method, and the CO2 emissions calculation program can distribute the difference for each facility in the factory, thereby ensuring consistency when aggregating CO2 emissions by facility.

[0096] Figure 14 This figure is a diagram for explaining an example of a method for calculating the CO 2 emission ratio for each product type when allocating the difference to each facility in a factory. Figure 15 This is a diagram for explaining an example of a calculation method for allocating a difference to each device in a factory.

[0097] The carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example) S in this modified embodiment is as follows, for example: Figure 1 The device shown includes an input unit 1, an output unit 2, an IF unit 3, a control processing unit 4b, and a storage unit 5. The input unit 1, output unit 2, IF unit 3, and storage unit 5 in the carbon dioxide emission calculation device S of these alternative embodiments are respectively the same as the input unit 1, output unit 2, IF unit 3, and storage unit 5 in the carbon dioxide emission calculation device S of the above-mentioned embodiment, and therefore their descriptions are omitted. The control processing unit 4b functionally includes a control unit 41, a total plant emission calculation unit 42, a total product emission calculation unit 43, and a distribution calculation unit 44b. The control unit 41, the total plant emission calculation unit 42, and the total product emission calculation unit 43 in the control processing unit 4b of the alternative embodiment are respectively the same as the control unit 41, the total plant emission calculation unit 42, and the total product emission calculation unit 43 in the control processing unit 4a of the embodiment, and therefore their descriptions are omitted.

[0098] The allocation calculation unit 44b calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit 42 and the total product emissions calculated by the total product emissions calculation unit 43 as the equipment difference for each equipment in the factory, and for each equipment in the factory, allocates the equipment difference of the equipment according to the CO2 emission ratio of each product type of the equipment, thereby allocating the calculated difference to each equipment in the factory at a specified ratio.

[0099] More specifically, the distribution calculation unit 44b first calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit 42 and the total product emissions calculated by the total product emissions calculation unit 43 for each facility in the factory as the facility difference. Figure 11 As shown in the "CO2 Difference (AB)" column in the figure, find the difference between each device.

[0100] Next, the distribution calculation unit 44b calculates the CO2 emission ratio of each product type for each product completed by the equipment in the specified period. Figure 9 Calculate the CO2 emissions of each process (CO2 emissions of each equipment) for each product type shown. Figure 14 The emission of each product [tCO2] is shown in the table. Figure 9 A calculates the CO2 emission "32" [tCO2] of the equipment named "Rolling 1" for the product No. "P001", according to Figure 9 B. Calculate the CO2 emission "0" [tCO2] of the equipment named "Rolling 1" for the product No. "P002", according to Figure 9C Calculate the CO2 emissions of the equipment named "Rolling 1" for the product No. "P003" and record it in Figure 14 In the "Emissions of each product [tCO2]" column. In the equipment named "Rolling 1", the total amount of its equipment CO2 emissions (process CO2 emissions) is calculated as "51.2" (=32+19.2) [tCO2], and this total amount is divided by the CO2 emissions of the product No. "P001" "32", thereby calculating the CO2 emission ratio of the product No. "P001" as "0.625" (=32 / 51.2). Similarly, the CO2 emission ratio of the product No. "P002" is calculated as "0" (=0 / 51.2), and the CO2 emission ratio of the product No. "P003" is calculated as 0.375 (=19.2 / 51.2), and these CO2 emission ratios are recorded in Figure 14 and Figure 15 In the "Allocation rate of each product" column.

[0101] Next, for each of the multiple facilities in the factory, the allocation calculation unit 44b multiplies the facility's facility difference by the CO2 emission ratio for each product type at that facility, calculating the allocation for that product and adding it to the product at that facility. For example, for the facility named "Rolling 1," the facility difference of -3.2 [tCO2] is multiplied by the CO2 emission ratio of 0.625 for the product of product number "P001." This yields an allocation of -2 [tCO2] for the product of product number "P001." This allocation is then added to the CO2 emission of 32 [tCO2] for the product of product number "P001." After allocation, the CO2 emission of product number "P001" at facility name "Rolling 1" becomes 30 (= 32 - 2) [tCO2]. Similarly, for the equipment named "Rolling 1," the allocated amount for product No. "P003" is "-1.2" [tCO2]. After allocation, the CO2 emissions from product No. "P003" at the equipment named "Rolling 1" are "18" (= 19.2 - 1.2) [tCO2]. Therefore, the total emissions from the products at the equipment named "Rolling 1" after allocation are "48" (= 30 + 12) [tCO2], which is consistent with the total emissions from the factory.

[0102] In this variation, similar to the above-mentioned embodiment, the total factory emission calculation unit 42 also includes at least one of the first total amount of CO2 emissions of raw materials used in the factory during the specified period and the second total amount of CO2 emissions generated during the specified period in the specified processing of the product to calculate the total factory emission. The total product emission calculation unit 43 may also: when the total factory emission calculation unit 42 includes the first total amount to calculate the total factory emission, it also includes the third total amount of CO2 emissions of raw materials used in the manufacture of the product completed during the specified period to calculate the total product emission; when the total factory emission calculation unit 42 includes the second total amount to calculate the total factory emission, it also includes the fourth total amount of CO2 emissions generated during the specified period in the specified processing of the product completed during the specified period to calculate the total product emission; when the total factory emission calculation unit 42 includes the first and second total amounts to calculate the total factory emission, it also includes the third and fourth total amounts to calculate the total product emission.

[0103] As an example, Figure 14 and Figure 15 shows an example where the total plant emissions also include the first total, and the total product emissions also include the third total. In this example, the raw material difference corresponding to the equipment difference is "-160" [tCO2]. The CO2 emission ratio of product No. "P001" is "0.424" (= 832 / 1960), and its allocated amount is "-67.84" [tCO2]. The CO2 emission ratio of product No. "P002" is "0.233" (= 456 / 1960), and its allocated amount is "-37.28" [tCO2]. The CO2 emission ratio of product No. "P003" is "0.343" (= 672 / 1960), and its allocated amount is "-54.88" [tCO2]. The CO2 emissions from the product No. "P001" after allocation in this raw material are "764.16" (= 832 - 67.84) [tCO2], the CO2 emissions from the product No. "P002" after allocation are "418.72" (= 456 - 37.28) [tCO2], and the CO2 emissions from the product No. "P001" after allocation are "617.12" (= 672 - 54.88) [tCO2]. Therefore, the total CO2 emissions from the products allocated in this raw material are "1800" (= 764.16 + 418.72 + 617.12) [tCO2], which is consistent with the total emissions from the factory.

[0104] In addition, Figure 15The amount of each product is expressed as a value rounded to three decimal places.

[0105] In the operation of the carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example thereof) S in this modified embodiment, as shown in FIG. Figure 13 As shown, as described above, each process from S1 to S4 is sequentially executed, and then process S5b is executed instead of process S5a. In process S5b, the CO2 emission calculation device S controls the distribution calculation unit 44b of the processing unit 4b to calculate the difference between the total plant emissions calculated by the total plant emissions calculation unit 42 in process S1 and the total product emissions calculated by the total product emissions calculation unit 43 in process S4 for each facility in the factory, as a facility difference. For each facility in the factory, this facility difference is distributed according to the CO2 emission ratio of each product type, thereby distributing the calculated difference to each facility in the factory at a specified ratio. Then, step S6 is executed, and the process ends.

[0106] In addition, in these embodiments and their variations, examples are described in which the first total amount is also included in the total factory emissions, and the third total amount is also included in the total product emissions. However, instead of or in addition to the first total amount, the second total amount of CO2 emissions generated during the specified period in the specified treatment carried out incidental to the product may also be included in the total factory emissions; instead of or in addition to the third total amount, the fourth total amount of CO2 emissions generated during the specified period in the specified treatment carried out incidental to the product completed within the specified period may also be included in the total product emissions.

[0107] The designated treatment performed in conjunction with the product is, for example, treatment performed on the product from the time the product is manufactured until it is delivered to the delivery destination. More specifically, the designated treatment is a packaging treatment for packaging the product, a transportation treatment for transporting the product from the factory to the delivery destination, or the like. The second total amount of CO2 emissions is calculated by multiplying the load of the designated treatment during the designated period by the unit CO2 emissions per unit of the designated treatment (the fourth unit CO2 emissions per unit). The fourth total amount of CO2 emissions is calculated by multiplying the load of products completed during the designated period by the fourth unit CO2 emissions per unit. For example, if the designated treatment is a packaging treatment, the second total amount of CO2 emissions is calculated by multiplying the total amount of packaging materials used during the designated period by the fourth unit CO2 emissions per unit of the packaging materials (packaging material unit CO2 emissions), and the fourth total amount of CO2 emissions is calculated by multiplying the total amount of packaging materials used for products completed during the designated period by the packaging material unit CO2 emissions. Alternatively, for example, in the case where the designated treatment is a transport treatment, the second total amount of CO2 emissions, for example, in the case where the CO2 emissions depend on the transport distance, is calculated by multiplying the total transport distance of the transport treatment within the designated period by the fourth unit CO2 emissions per unit in the transport treatment (transport treatment unit CO2 emissions), and the fourth total amount of CO2 emissions is calculated by multiplying the total transport distance of the transport treatment of the product completed within the designated period by the transport treatment unit CO2 emissions.

[0108] As described above, this specification discloses various types of technologies, and the main technologies among them are summarized below.

[0109] The carbon dioxide emissions calculation system according to the technical solution calculates CO2 emissions from a factory having multiple facilities, that is, a factory capable of manufacturing multiple types of products through multiple processes. The carbon dioxide emissions calculation system includes: a total factory emissions calculation unit that calculates the total amount of CO2 emissions generated by the factory during a specified period as a total factory emissions; a total product emissions calculation unit that calculates the total amount of CO2 emissions generated during the specified period by manufacturing products completed during the specified period as a total product emissions; and a distribution calculation unit that calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit and the total product emissions calculated by the total product emissions calculation unit as a difference, and distributes the calculated difference at a specified ratio for each type of product or for each facility in the factory. Preferably, in the carbon dioxide emissions calculation system, the total factory emissions calculation unit calculates the amount of CO2 emissions generated during the specified period by each facility during the use of the facility as a per-facility emissions, and calculates the total factory emissions by summing the calculated per-facility emissions. Preferably, in the above-mentioned carbon dioxide emission calculation system, the total product emission calculation unit includes: a device unit emission calculation unit, which calculates, for each of a plurality of devices corresponding to a plurality of processes for manufacturing a product completed within the specified period, a unit CO2 emission per unit of the device based on the total amount of manufacturing load applied to the device corresponding to the process and used to perform the process during the manufacturing within the specified period and the total amount of CO2 emissions of the device related to the total amount of manufacturing load; a device emission calculation unit, which calculates, for each of a plurality of devices corresponding to a plurality of processes for manufacturing a product completed within the specified period, a device CO2 emission per unit of the device calculated by the device unit emission calculation unit and the total amount of manufacturing load applied to the device for manufacturing the product completed within the specified period during the manufacturing within the specified period; and a total amount calculation unit, which calculates, as the total product emission, the sum of the device CO2 emissions of each device calculated by the device emission calculation unit for each of a plurality of devices corresponding to a plurality of processes for manufacturing a product completed within the specified period.

[0110] This CO2 emissions calculation system distributes the difference between total factory emissions and total product emissions, i.e., the difference, at a specified ratio for each product type or each facility in the factory. This allows the distributed total factory emissions to be consistent with the total product emissions. In other words, the CO2 emissions calculation system can reconcile the total CO2 emissions of all products completed during a specified period with the total CO2 emissions of the entire factory during that specified period.

[0111] In another technical solution, in the above-mentioned carbon dioxide emission calculation system, the distribution calculation unit distributes the calculated difference according to the CO2 emission ratio of each type of the product, thereby distributing the calculated difference in a specified proportion according to the type of the product.

[0112] This carbon dioxide emission calculation system can allocate the difference for each product type, so that when the CO2 emissions are totaled for each product type, the two can be made consistent.

[0113] In another technical solution, in these above-mentioned carbon dioxide emission calculation systems, the distribution calculation unit calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit and the total product emissions calculated by the total product emissions calculation unit for each device in the factory as the equipment difference, and for each device in the factory, the equipment difference of the device is distributed according to the CO2 emission ratio of each product type of the device, so that the calculated difference is distributed to each device in the factory at a specified ratio.

[0114] This carbon dioxide emission calculation system can allocate the difference to each facility in the factory, so that when the CO2 emission is totaled for each facility, the two can be made consistent.

[0115] In another technical solution, in the above-mentioned carbon dioxide emission calculation system, the total factory emission calculation unit will also include at least one of the first total CO2 emission of raw materials used in the factory during the specified period and the second total CO2 emission generated in the specified process performed on the product during the specified period to calculate the total factory emission. The total product emission calculation unit: when the total factory emission calculation unit includes the first total amount to calculate the total factory emission, it will also include the third total CO2 emission of raw materials used in the manufacture of products completed during the specified period to calculate the total product emission; when the total factory emission calculation unit includes the second total amount to calculate the total factory emission, it will also include the fourth total CO2 emission generated in the specified process performed on the products completed during the specified period to calculate the total product emission; when the total factory emission calculation unit includes the first and second total amounts to calculate the total factory emission, it will also include the third and fourth total amounts to calculate the total product emission.

[0116] The carbon dioxide emission calculation system can take into account CO2 emissions of parts that cannot be associated with equipment.

[0117] Another technical solution involves a method for calculating carbon dioxide emissions, which calculates the CO2 emissions of a factory equipped with multiple devices, that is, the factory capable of manufacturing multiple types of products through multiple processes. The method for calculating carbon dioxide emissions includes: a total factory emissions calculation step, which calculates the total amount of CO2 emissions generated in the factory during a specified period as the total factory emissions; a total product emissions calculation step, which calculates the total amount of CO2 emissions generated in the manufacturing of products completed within the specified period during the specified period as the total product emissions; and a distribution calculation step, which calculates the difference between the total factory emissions calculated in the total factory emissions calculation step and the total product emissions calculated in the total product emissions calculation step as the difference, and distributes the calculated difference according to each type of product or according to each device in the factory at a specified ratio.

[0118] A carbon dioxide emissions calculation program according to another embodiment of the present invention is a program for calculating CO2 emissions from a factory equipped with multiple facilities, that is, a factory capable of manufacturing multiple types of products through multiple processes. The program is configured to cause a computer to function as any of the aforementioned carbon dioxide emissions calculation systems. The program is provided stored on a computer-readable recording medium.

[0119] These CO2 emissions calculation methods and programs allocate the difference between total factory emissions and total product emissions, i.e., the difference, at a specified ratio for each product type or each facility within the factory. This allows the allocated total factory emissions to be consistent with the total product emissions. Specifically, these CO2 emissions calculation methods and programs can make the total CO2 emissions from all products completed during a specified period consistent with the total CO2 emissions for the entire factory during that period.

[0120] This application is based on Japanese invention patent application No. 2023-32912 filed on March 3, 2023, and the contents are incorporated into this application.

[0121] While the present invention has been appropriately and fully described above through embodiments with reference to the accompanying drawings for the purpose of illustrating the present invention, it should be appreciated that those skilled in the art can readily modify and / or improve the above embodiments. Therefore, any modifications or improvements implemented by those skilled in the art, as long as they do not depart from the scope of protection of the claims set forth in the appended claims, should be construed as being included within the scope of protection of the claims.

[0122] Industrial applicability

[0123] According to the present invention, a carbon dioxide emission amount calculation system, a carbon dioxide emission amount calculation method, and a carbon dioxide emission amount calculation program storage medium for determining the amount of carbon dioxide emission can be provided.

Claims

1. A carbon dioxide emissions calculation system, characterized in that: Calculate the CO2 emissions of a factory that has multiple facilities, that is, a factory that can produce multiple types of products through multiple processes. The carbon dioxide emissions calculation system includes: A factory emission total amount calculation unit calculates the total amount of CO2 emissions generated in the factory during a specified period as the factory emission total amount; a total product emission calculation unit that calculates the total amount of CO2 emissions generated during the specified period in the manufacture of products completed during the specified period as the total product emission; and The allocation calculation unit calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit and the total product emissions calculated by the total product emissions calculation unit as a difference, and allocates the calculated difference according to the type of each product or according to each equipment in the factory in a specified proportion.

2. The carbon dioxide emission calculation system according to claim 1, characterized in that: The distribution calculation unit distributes the obtained difference according to the CO 2 emission ratio of each product type, thereby distributing the obtained difference at a specified ratio for each product type.

3. The carbon dioxide emission calculation system according to claim 1, characterized in that: The allocation calculation unit calculates the difference between the total factory emissions calculated by the total factory emissions calculation unit and the total product emissions calculated by the total product emissions calculation unit as the equipment difference for each equipment in the factory, and for each equipment in the factory, allocates the equipment difference of the equipment according to the CO2 emission ratio of each product type of the equipment, thereby allocating the calculated difference to each equipment in the factory at a specified ratio.

4. The carbon dioxide emission calculation system according to claim 1, characterized in that: The total factory emissions calculation unit further calculates the total factory emissions by including at least one of a first total amount of CO2 emissions from raw materials used in the factory during the specified period and a second total amount of CO2 emissions generated during the specified period in a specified process incidental to the product. Calculation of the total amount of emissions from the products: When the total factory emissions calculation unit includes the first total amount to calculate the total factory emissions, the total product emissions are further calculated by including a third total amount of CO2 emissions from raw materials used in the manufacture of products completed within the specified period; When the total plant emissions calculation unit includes the second total amount in calculating the total plant emissions, the total product emissions calculation unit further includes a fourth total amount of CO2 emissions generated during the specified period in a specified process incidental to the products completed during the specified period to calculate the total product emissions; When the total plant discharge amount calculation unit calculates the total plant discharge amount by including the first and second total amounts, the total product discharge amount is calculated by further including the third and fourth total amounts.

5. A method for calculating carbon dioxide emissions, characterized in that: Calculate the CO2 emissions of a factory that has multiple facilities, that is, a factory that can produce multiple types of products through multiple processes. The carbon dioxide emissions calculation method includes: a factory total emissions calculation step, calculating the total amount of CO2 emissions generated by the factory during a specified period as the factory total emissions; a total product emissions calculation step of calculating the total amount of CO2 emissions generated during the manufacturing of products completed during the specified period as the total product emissions; and A distribution calculation step is to calculate the difference between the total factory emissions calculated in the total factory emissions calculation step and the total product emissions calculated in the total product emissions calculation step as a difference, and to distribute the calculated difference according to the type of each product or according to each equipment in the factory in a specified proportion.

6. A recording medium, characterized in that A carbon dioxide emission calculation program is recorded and computer-readable for calculating the CO2 emission of a factory having multiple facilities, that is, a factory capable of manufacturing multiple types of products through multiple processes, wherein: The carbon dioxide emission amount calculation program is a program for causing a computer to function as the carbon dioxide emission amount calculation system according to any one of claims 1 to 4 .

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