Greenhouse gas emission calculation device, program, and greenhouse gas emission calculation method

Abstract

To enable a greenhouse effect gas emission amount of a commercial material to be grasped.SOLUTION: A greenhouse effect gas emission amount calculation device includes: a material correspondence emission amount calculation unit which, on the basis of a standard value of a greenhouse effect gas emission amount corresponding to each material, calculates a material correspondence emission amount which is a greenhouse effect gas emission amount corresponding to a predetermined unit quantity of materials used in production of a predetermined commercial material; a step correspondence emission amount calculation unit which, on the basis of step correspondence unit emission amount information showing greenhouse effect gas emission amounts corresponding to steps of processing the predetermined unit quantity of the materials in the production of the commercial material, calculates step correspondence emission amounts which are greenhouse effect gas emission amounts when predetermined amounts of the materials to be processed are processed at the steps; and a commercial material correspondence emission amount calculation unit which, on the basis of the material correspondence emission amount calculated by the material correspondence emission amount calculation unit and the step correspondence emission amounts calculated by the step correspondence emission amount calculation unit, calculates a commercial material correspondence emission amount corresponding to the commercial material produced from the materials through the steps.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a greenhouse gas emission calculation device, a program, and a greenhouse gas emission calculation method. [Background technology]

[0002] There is currently a demand for a reduction in greenhouse gas emissions. Greenhouse gases such as carbon dioxide, methane, nitrous oxide, and hydrofluorocarbons can be converted into carbon dioxide. Against this background, a technique for calculating the amount of carbon dioxide emissions from factory facilities based on operational information on production facilities and utility facilities is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-186570 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, there are commercial products such as packaging materials such as pouches and paper boxes, barrier films used in packaging materials, decorative sheets for building materials, etc. These commercial materials are sold as products after, for example, being filled with contents or attached to building materials at the delivery destination. From the perspective of environmental issues, it is required to be able to grasp the greenhouse gas emissions of such commercial materials as well.

[0005] The present invention has been made in view of the above circumstances, and aims to make it possible to grasp the greenhouse gas emissions of commercial materials. [Means for solving the problem]

[0006] One aspect of the present invention for solving the above-described problems includes a material-related emission calculation unit that calculates material-related emissions, which are greenhouse gas emissions corresponding to a predetermined unit quantity of a material used in the production of a predetermined commercial material, based on standard values ​​of greenhouse gas emissions corresponding to each material; a process-related emission calculation unit that calculates process-related emissions, which are greenhouse gas emissions when a predetermined processing amount of a material is processed in the process, based on process-related unit emission information indicating greenhouse gas emissions corresponding to the process of processing a predetermined unit quantity of the material in the production of the commercial material; and a commodity-related emission calculation unit that calculates commodity-related emissions corresponding to the commercial material produced from the material through the process, based on the material-related emissions calculated by the material-related emission calculation unit and the process-related emissions calculated by the process-related emission calculation unit. The process-related emission calculation unit calculates a waste-related emission amount corresponding to the amount of defective processed products discarded in one process, based on the defect rate in one process and waste-related unit emission information indicating the amount of greenhouse gas emissions due to the disposal of a predetermined unit quantity of processed products corresponding to the one process, and the commodity-related emission calculation unit calculates the commodity-related emission amount based on the material-related emission amount, the process-related emission amount, and the waste-related emission amount. This is a greenhouse gas emission calculation device.

[0007] In one aspect of the present invention, a computer as a greenhouse gas emission calculation device functions as a material-related emission calculation unit that calculates, based on standard values ​​of greenhouse gas emissions corresponding to each material, material-related emission amounts, which are greenhouse gas emission amounts corresponding to a predetermined unit quantity of a material used in the manufacture of a predetermined commercial material; a process-related emission calculation unit that calculates, based on process-related unit emission information indicating greenhouse gas emission amounts corresponding to a process of processing a predetermined unit quantity of material in the manufacture of the commercial material, process-related emission amounts, which are greenhouse gas emission amounts when a predetermined amount of material is processed in the process; and a commodity-related emission calculation unit that calculates, based on the material-related emission amounts calculated by the material-related emission calculation unit and the process-related emission amounts calculated by the process-related emission calculation unit, commodity-related emission amounts corresponding to a commercial material manufactured from the material through the process. The process-related emission calculation unit calculates a waste-related emission amount corresponding to the amount of defective processed products discarded in one process, based on the defect rate in one process and waste-related unit emission information indicating the amount of greenhouse gas emissions due to the disposal of a predetermined unit quantity of processed products corresponding to the one process, and the product-related emission calculation unit calculates the product-related emission amount based on the material-related emission amount, the process-related emission amount, and the waste-related emission amount. This is a program for

[0008] Furthermore, one aspect of the present invention includes a material-related emission calculation step of calculating, based on standard values ​​of greenhouse gas emission amounts corresponding to each material, material-related emission amounts, which are greenhouse gas emission amounts corresponding to a predetermined unit quantity of material used in the production of a predetermined commercial material; a process-related emission calculation step of calculating, based on process-related unit emission information indicating greenhouse gas emission amounts corresponding to a process of processing a predetermined unit quantity of material in the production of the commercial material, process-related emission amounts, which are greenhouse gas emission amounts when a predetermined amount of material is processed in the process; and a commercial-related emission calculation step of calculating, based on the material-related emission amounts calculated in the material-related emission calculation step and the process-related emission amounts calculated in the process-related emission calculation step, commercial-related emission amounts corresponding to a commercial material manufactured from the material through the process. , the process-related emission calculation step calculates a waste-related emission amount corresponding to the amount of defective processed products discarded in one process based on the defect rate in one process and waste-related unit emission information indicating the amount of greenhouse gas emissions resulting from the discard of a predetermined unit quantity of processed products corresponding to the one process, and the commodity-related emission calculation step calculates the commodity-related emission amount based on the material-related emission amount, the process-related emission amount, and the waste-related emission amount. This is a method for calculating greenhouse gas emissions. [Effects of the Invention]

[0009] As described above, the present invention provides the effect of making it possible to grasp the amount of greenhouse gas emissions for commercial materials. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a basic concept of calculation of GHG emission amounts by a GHG emission calculation device in this embodiment. FIG. [Figure 2] 1 is a diagram illustrating an example of a functional configuration of a GHG emission amount calculation device according to an embodiment of the present invention. [Figure 3] FIG. 10 is a diagram showing an example of standard material corresponding emission amount information in the present embodiment. [Figure 4] FIG. 4 is a diagram showing an example of process-related discharge amount information in the present embodiment. [Figure 5] FIG. 10 is a diagram showing an example of defect rate information in the present embodiment. [Figure 6] FIG. 10 is a diagram showing an example of waste-related emission amount information in the present embodiment. [Figure 7] 4 is a flowchart showing an example of a processing procedure executed by the GHG emission calculation device in this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] A GHG (greenhouse gas) emission calculation device according to an embodiment will be described below with reference to the drawings. The GHG emission calculation device according to the present embodiment calculates GHG emission amounts corresponding to various commercial materials. The commercial materials in this embodiment are products manufactured in factories, including packaging (soft packaging materials such as pouches, paper containers such as paper boxes, injection-molded products such as containers, etc.), packaging materials (laminated films such as barrier films, etc.), and building materials (flooring materials, decorative paper, wallpaper, interior decoration materials, etc.). The materials and processes used to manufacture the commercial materials vary depending on the commercial material. Examples of materials include paper materials, resin materials, composite materials, inks (pigments, dyes, solvents), and adhesives (resins, solvents). The GHG emission calculation device of this embodiment calculates GHG emissions according to the materials and process details of the commercial material to be calculated. GHGs include gases such as carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF6), etc. In the following explanation, an example will be given in which the greenhouse gas emission calculation device of this embodiment calculates the carbon dioxide equivalent converted using global warming potential as GHG emissions.

[0012] FIG. 1 shows the basic concept of calculation of GHG emissions by the GHG emission calculation device of this embodiment. A certain product FC is manufactured through one or more processes using the corresponding material MT. The figure shows an example in which the material MT is manufactured through N stages of processes PR, from the first process PR-1, to the second process PR-2, to the Nth process PR-N.

[0013] The GHG emission calculation device of this embodiment calculates the GHG emission amount of the material MT itself (material-related emission amount) when calculating the GHG emission amount corresponding to the commercial material FC. The material-related emission amount is the GHG emission amount that is assumed to have occurred in the production of the corresponding material MT. The GHG emission calculation device of this embodiment may use known GHG emission data for a material (standard material-based emission information) when calculating the material-based emissions. In this case, if the material to be calculated is composed of multiple materials, the GHG emission calculation device may calculate the material-based emissions of the material to be calculated using the standard material-based emission information for each of the multiple constituent materials.

[0014] Furthermore, the GHG emission calculation device of this embodiment calculates GHG emissions (process-related emissions) for each process PR. In the drawing, an example is shown in which N process-related emissions, from the first process-related emissions to the Nth process-related emissions, are calculated for each of the first process PR-1 to the Nth process PR-N.

[0015] In each process, processing defects occur at a certain defect rate. Processed products that have become defective in process 1 cannot be moved to the next process. As a certain amount of defective processed products are generated in process 1, the processing volume in the next process decreases. Therefore, the process-related emissions from the second process onwards may be calculated taking into account the decrease in processing volume due to the disposal of defective processed products in the previous process. Furthermore, defective processed products generated in each process PR are subject to disposal. GHG emissions are also generated in association with disposal. Therefore, the GHG emission calculation device of this embodiment calculates the GHG emissions corresponding to the disposal of defective processed products generated in each process PR (disposal-related emissions), and reflects the calculated disposal-related emissions in the process-related emissions.

[0016] The GHG emission calculation device of this embodiment is configured to calculate the GHG emission amount corresponding to the commercial material FC (commercial-related emission amount) by combining the material-related emission amount, process-related emission amount, and waste-related emission amount calculated as described above. The commercial material-related emission amount may be calculated corresponding to, for example, a predetermined unit quantity (for example, unit weight, unit number, etc.).

[0017] 2 shows an example of the functional configuration of the GHG emission calculation device 100 according to this embodiment. The functions of the GHG emission calculation device 100 shown in the figure are realized by a central processing unit (CPU) provided in the GHG emission calculation device 100 as hardware executing a program.

[0018] The GHG emission calculation device 100 in the figure includes a user interface unit 101, a control unit 102, and a storage unit 103. The user interface unit 101 includes an input device that allows a user to operate the GHG emission calculation device 100, and an output device that outputs information to the user from the GHG emission calculation device 100. The input device may include a mouse, keyboard, tablet, voice input device, etc. The output device may include a display, sound output device, printer, etc.

[0019] The control unit 102 executes control in the GHG emission calculation device 100. The control unit 102 includes a material-based emission calculation unit 121, a process-based emission calculation unit 122, and a commodity-based emission calculation unit 123. The material-based emission amount calculation unit 121 calculates the material-based emission amount. The process-related emission calculation unit 122 calculates the process-related emission amount corresponding to each process up to manufacturing the commercial material using the material. The process-related emission calculation unit 122 may also calculate the waste-related emission amount generated in response to the disposal of defective products generated in each process. The product-related emission amount calculation unit 123 calculates the product-related emission amount.

[0020] The storage unit 103 stores various types of information corresponding to the GHG emission calculation device 100. The storage unit 103 includes a standard material-specific emission amount information storage unit 131, a process-specific emission amount information storage unit 132, a defect rate information storage unit 133, and a waste-specific emission amount information storage unit 134. The standard material-based emission information storage unit 131 stores standard material-based emission information. The emissions indicated by the standard material-based emission information are GHG emissions determined as standards for various basic materials used in the manufacture of various commercial materials. The GHG emissions indicated by such standard material-based emission information may be based on, for example, known GHG emissions for each material.

[0021] 3 shows an example of standard material-based emission information stored in the standard material-based emission information storage unit 131. The standard material-based emission information in the figure is information that associates a specific gravity known for each material (material type) with a unit emission amount as a standard value. The figure shows an example in which the unit emission amount is the GHG emission amount per 1 kg of the corresponding material. Specific examples of the material include PET film, polypropylene film, and nylon film.

[0022] Returning to Fig. 2 for the explanation, the process-specific emission amount information storage unit 132 stores process-specific emission amount information. The process-specific emission amount information is information in which the process-specific emission amount is associated with each process involved in the production of various commercial materials.

[0023] Specific examples of the process include a winding process, a sheet-making process, a packaging process, etc. The winding process can be divided into a winding process involving gravure printing, a winding process involving flexographic printing, a winding process involving laminate printing, etc. The sheet-making process can be divided into a sheet-making process using three-sided bags, a sheet-making process using palm-and-lip bags, etc.

[0024] 4 shows an example of process-related emission amount information stored in the process-related emission amount information storage unit 132. The process-related emission amount information in the figure is information that associates unit emission amounts derived for each process. The figure shows an example in which the unit emission amount indicates the process-related emission amount per unit quantity, such as the number of sheets, number of pieces, unit length, or unit weight of processed products obtained by processing materials in the corresponding process.

[0025] The unit emission amount shown as process-specific emission information may be derived based on measurement results of the energy consumed by manufacturing equipment actually operating in a factory for material processing, etc., corresponding to each corresponding process. In this case, for example, in a factory where multiple manufacturing devices of different scales are installed corresponding to the same single process, a single value normalized based on the GHG emission values ​​calculated for each of the multiple manufacturing devices may be used as the unit emission amount of the process-related emission information. Specifically, normalization may be, for example, calculation of the average value of the unit emission values ​​calculated for each of the multiple manufacturing devices. Alternatively, normalization may involve weighting the unit emissions for each of the multiple manufacturing devices according to the ratio of the space or area occupied by the multiple manufacturing devices, and then calculating the average value of the weighted unit emissions.

[0026] Returning to the explanation in Fig. 2, the defect rate information storage unit 133 stores the defect rate information. The defect rate information is information indicating the defect rate (defect rate) for each process, which is the same as that indicated in the defect rate information stored in the defect rate information storage unit 133. The defect rate corresponding to the process 1 may be calculated based on the rate of occurrence of defective products in the past for the corresponding manufacturing equipment. In this case, the defect rate may be a fixed value calculated once, or may be updated based on the rate of occurrence of defective products for a certain period in the past.

[0027] 5 shows an example of the defect rate information stored in the defect rate information storage unit 133. The defect rate information shown in the drawing is information in which the defect rate is associated with each process, the same as that shown in the process-related emission amount information.

[0028] Returning to Fig. 2 for the explanation, the waste-equivalent emission information storage unit 134 stores waste-equivalent emission information. The waste-equivalent emission information is information indicating the defect rate for each process. The waste-equivalent emission information storage unit 134 may include waste-equivalent emission information indicating the same defect rate for each process as that indicated in the waste-equivalent emission information stored in the waste-equivalent emission information storage unit 134.

[0029] 6 shows an example of waste-related emission information stored in the waste-related emission information storage unit 134. The waste-related emission information shown in the figure is information that associates unit emissions (waste-related unit emissions) based on a predetermined unit quantity (e.g., number of sheets, number of units, unit length, unit weight, etc.) with each process. The waste-related unit emissions may be determined, for example, based on the known GHG emissions of the processed product obtained by the corresponding process.

[0030] An example of a processing procedure executed by the GHG emission calculation device 100 will be described with reference to the flowchart in Fig. 7. The processing in Fig. 7 starts in a state where an application screen of a GHG emission calculation application is displayed on the display of the user interface unit 101. When a user has an application calculate GHG emissions for a certain commercial product, the user performs an operation on the application screen to input material information about the materials of the commercial product for which GHG emissions are to be calculated (material information input operation), and an operation to input process information about each process for manufacturing the commercial product (process information input operation). The user can perform the material information input operation and the process information input operation in any order. Furthermore, when material information has already been input, the user can perform the material information input operation so as to change the input material information. The process information input operation can include an operation for adding process information and an operation for changing already input process information. The GHG emission calculation application calculates the emissions corresponding to the commodity using the information (material information, process information) that has been input in response to the material information input operation or process information input operation performed up to the present time, and outputs the calculated emissions corresponding to the commodity on the application screen.

[0031] Step S100: In the GHG emission calculation device 100, the material-based emission calculation unit 121 determines whether a material information input operation has been received for the material of the commercial material for which GHG emissions are to be calculated. The material information newly input or changed by the material information input operation may include the type of material, the material's width, thickness, basis weight, unit input amount (which may be expressed, for example, as the length of the material as a sheet), etc. Based on these width, thickness, basis weight, unit input amount, etc., the unit processing amount to be processed in each process is calculated. Such unit processing amount indicates bulk (volume). Furthermore, the unit processing amount can be calculated as weight, for example, by using the specific gravity information indicated in the standard material-based emission information. The material-related emissions, process-related emissions, waste-related emissions, and commercial material-related emissions explained below are examples of GHG emissions calculated as the amount of GHG emissions corresponding to the unit processed amount in weight as described above.

[0032] Step S102: When the material-based emission calculation unit 121 receives the material information input operation in step S100, it acquires the standard unit emission amount associated with the same target material as that indicated in the input material information from the standard material-based emission information stored in the standard material-based emission information storage unit 131.

[0033] Step S104: The material-related emission amount calculation unit 121 calculates the material-related emission amount corresponding to the unit processing amount of the target material indicated by the material information input in response to step S100, using the standard unit emission amount acquired in step S102. In this case, the material-corresponding emission amount calculation unit 121 may calculate the material-corresponding emission amount corresponding to the unit processing amount by multiplying the standard unit emission amount by the ratio between the unit quantity (weight) of the material corresponding to the unit emission amount and the unit processing amount. Furthermore, the standard unit emission amount in the standard material-based emission amount information may indicate the emission amount per unit volume of material. In this case, the unit processing amount of material is also expressed in volume (bulk) instead of weight. Then, the material-based emission amount calculation unit 121 can calculate the material-based emission amount corresponding to the unit processing amount by multiplying the unit emission amount by the ratio of the unit amount (e.g., volume) of material corresponding to the standard unit emission amount to the unit processing amount (e.g., volume).

[0034] Furthermore, if the target material is composed of multiple materials, the material-based emission calculation unit 121 obtains the standard unit emission amount for each of the multiple materials that are components of the target material in step S102. The material-based emission calculation unit 121 may calculate the standard unit emission amount corresponding to the target material using the component mixture ratio of the multiple materials in the target material and the standard unit emission amount for each of the multiple materials. For example, if the target material is a combination of material A (mixing ratio 60%) and material B (mixing ratio 40%), and the standard unit emission amounts of materials A and B are a and b, respectively, the standard unit emission amount C of the target material can be calculated using the following formula 1. C=(0.6a+0.4b)...(Formula 1) In this case, too, the material-corresponding emission amount calculation unit 121 may calculate the material-corresponding emission amount corresponding to the unit processing amount by multiplying the unit emission amount by the ratio between the unit amount corresponding to the calculated standard unit emission amount and the unit processing amount.

[0035] Step S106: The commodity-based emission calculation unit 123 calculates the commodity-based emission amount so as to reflect the material-based emission amount calculated in this step S104. In this case, if there is a process for which process information has already been input, the commodity-based emission calculation unit 123 calculates the commodity-based emission amount by adding the material-based emission amount calculated in this step S104 and the process-based emission amount calculated for each piece of process information that has already been input. Also, if no process information has yet been input, the commodity-based emission calculation unit 123 may use the material-based emission amount calculated in this step S104 as the calculation result for the commodity-based emission amount. The commodity-related emission amount calculation unit 123 outputs the calculated commodity-related emission amount so that it is displayed on the application screen of the GHG emission amount calculation application.

[0036] Step S108: After the processing of step S106, or if it is determined in step S100 that a material information input operation has not been received, the process-related emission calculation unit 122 determines whether an operation to input process information corresponding to the first process (process information input operation) has been received. The process information includes information indicating the corresponding process. The process information input operation here also includes an operation to change process information that has already been input.

[0037] Step S110: When a process information input operation corresponding to the first process is received, the process-related emission amount calculation unit 122 acquires, from the defect rate information storage unit 133, the defect rate corresponding to the current process (in this case, the first process) indicated by the process information input corresponding to this step S108. Furthermore, the process-related emission calculation unit 122 acquires the unit emission amount corresponding to the disposal of the defective processed product corresponding to the current process from the waste-related emission information stored in the waste-related emission information storage unit 134 .

[0038] Step S112: The process-related emission calculation unit 122 calculates the waste-related emission amount corresponding to the current process. The waste-related emission amount is the GHG emission amount that is assumed to occur in response to the disposal of defective processed products generated in the corresponding process. In step S112, the process-related emission amount calculation unit 122 uses the defect rate acquired in step S110 to calculate the amount of defective processed products (defective product amount) that will be generated when processing the unit processing amount of material input into the first process. The calculated defective product amount corresponds to the amount of material that will be discarded in the first process. The process-related emission amount calculation unit 122 uses the unit emission amount for waste acquired in step S110 to calculate the waste-related emission amount that corresponds to the calculated defective product amount. The waste-related emission amount calculated in this way is the waste-related emission amount corresponding to the unit processing amount of the current process.

[0039] Step S114: The process-based emission calculation unit 122 acquires unit emission information associated with the same process as indicated by the process information input corresponding to the first process from the process-based emission information stored in the process-based emission information storage unit 132.

[0040] Step S116: The process-specific emission calculation unit 122 calculates the process-specific emission amount corresponding to the current process. Specifically, the process-specific emission calculation unit 122 calculates the emission amount corresponding to the unit processing amount using the unit emission amount of the process-specific emission information acquired in step S114. Then, the process-specific emission calculation unit 122 calculates the process-specific emission amount corresponding to the current process by adding the waste-specific emission amount calculated in step S112 to the emission amount corresponding to the calculated unit processing amount. In this way, the process-specific emission amount in this embodiment reflects the waste-specific emission amount corresponding to the defect rate in the current process.

[0041] Step S118: The product-based emission amount calculation unit 123 calculates the product-based emission amount according to the current input status of material information and process information. When calculating the commercial material-based emission amount, if material information has already been input and the material-based emission amount has been calculated, the commercial material-based emission calculation unit 123 adds the material-based emission amount to the process-based emission amount of the current process calculated in this step S116. Furthermore, when calculating the commercial material-based emission amount, if process information for other processes after the first process has already been input and the process-based emission amount has been calculated, the commercial material-based emission calculation unit 123 adds the process-based emission amount calculated for the other process to the process-based emission amount calculated in this step S116. The commodity-related emission amount calculation unit 123 outputs the calculated commodity-related emission amount so that it is displayed on the application screen of the GHG emission amount calculation application.

[0042] Step S120: After the processing of step S118, or if it is determined in step S108 that a process information input operation corresponding to the first process has not been received, the process-related emission amount calculation unit 122 determines whether or not a process information input operation corresponding to the second process or later has been received.

[0043] Step S122: When a process information input operation corresponding to the second process or later is received, the process-related emission amount calculation unit 122 acquires the defect rate of the immediately preceding process from the defect rate information storage unit 133. If the process information corresponding to the immediately preceding process has not yet been input, step S122 and the next step S122 may be skipped.

[0044] Step S124: The process-related emission amount calculation unit 122 corrects the unit processing amount corresponding to the current process using the defect rate of the immediately preceding process acquired in step S 122. Specifically, the process-related emission amount calculation unit 122 may calculate a correction value Mc of the unit processing amount by the following formula 2, where M is the unit processing amount of the immediately preceding process and D is the defect rate. Mc=M(1-D)...(Formula 2)

[0045] Defective processed products generated in a process cannot be transferred to the next process. Therefore, the unit processing volume corresponding to the unit input amount of material decreases with each process according to the defect rate for each process. In subsequent processes, the process-related emission amount also decreases as the actual unit processing volume decreases as described above. Therefore, the process-related emission calculation unit 122 of this embodiment corrects the unit processing volume input to the current process based on the defect rate of the immediately preceding process, so that the decrease in emission amount due to the unit processing volume that effectively decreases according to the defect rate is reflected in the process-related emission amount. This improves the accuracy of the process-related emission amount calculated for the second process and subsequent processes.

[0046] Step S126: The process-related emission calculation unit 122 acquires the defect rate corresponding to the current process from the defect rate information storage unit 133, and acquires the waste-related unit emission amount corresponding to the current process from the waste-related emission information storage unit .

[0047] Step S128: The process-related emission calculation unit 122 calculates the waste-related emission amount corresponding to the current process. In step S128, the process-related emission amount calculation unit 122 uses the defect rate of the current process acquired in step S126 to calculate the amount of defective products that will be generated when processing the unit processing amount of material input into the current process. The calculated amount of defective products corresponds to the amount of material that will be discarded in the current process. The process-related emission amount calculation unit 122 uses the unit emission amount for waste acquired in step S126 to calculate the amount of waste-related emission that corresponds to the calculated amount of defective processed products. The waste-related emission amount calculated in this way is the waste-related emission amount corresponding to the unit processing amount of the current process.

[0048] Step S130: The process-based emission calculation unit 122 acquires, from the process-based emission information storage unit 132, unit emission information associated with the same process as the process information input for the current process.

[0049] Step S132: The process-specific emission calculation unit 122 calculates the process-specific emission amount corresponding to the current process. Specifically, the process-specific emission calculation unit 122 calculates the emission amount corresponding to the unit processing amount corrected in step S124 using the unit emission amount indicated by the process-specific emission information acquired in step S130. Then, the process-specific emission calculation unit 122 calculates the process-specific emission amount corresponding to the current process by adding the waste-specific emission amount calculated in step S128 to the emission amount corresponding to the calculated unit processing amount.

[0050] Step S134: The product-based emission amount calculation unit 123 calculates the product-based emission amount according to the current input status of material information and process information. When calculating the commercial material-based emission amount, if material information has already been input and the material-based emission amount has been calculated, the commercial material-based emission calculation unit 123 adds the material-based emission amount to the process-based emission amount of the current process calculated in this step S132. Also, when calculating the commercial material-based emission amount, if process information for other processes after the first process has already been input and the process-based emission amount has been calculated, the commercial material-based emission calculation unit 123 adds the process-based emission amount calculated for the other process to the process-based emission amount calculated in this step S132. The commodity-related emission amount calculation unit 123 outputs the calculated commodity-related emission amount so that it is displayed on the application screen of the GHG emission amount calculation application.

[0051] In the display of the emission amount corresponding to the commercial material in steps S106, S118, and S134, the emission amount corresponding to the commercial material per unit processed amount of material may be displayed. Furthermore, for example, when the material is in sheet form and supplied in units of rolls of a predetermined length of sheet, the unit processing amount of the material can be made to correspond to a predetermined number of rolls. In such a case, the display of the product-related discharge amount on the application screen may be configured to show the product-related discharge amount converted into one roll of material. Furthermore, since the number of products to be manufactured corresponding to the unit processing amount is known, the product-related emission amount converted into a per-product amount may be displayed on the application screen.

[0052] Alternatively, a program for implementing the functions of the GHG emission calculation device 100 may be recorded on a computer-readable recording medium, and the program may be loaded into a computer system and executed to perform the processing of the GHG emission calculation device 100. Here, "loading a program recorded on a recording medium into a computer system and executing it" includes installing the program on a computer system. The term "computer system" here includes hardware such as an operating system and peripheral devices. The term "computer system" may also include multiple computer devices connected via a network, including the Internet, a wide area network (WAN), a local area network (LAN), or a dedicated line. The term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, read-only memory (ROM), and CD-ROMs, as well as storage devices such as hard disks built into a computer system. Thus, a recording medium storing a program may be a non-transitory recording medium such as a CD-ROM. The term "recording medium" also includes internal or external recording media accessible from a distribution server for distributing the program. The program code stored on the distribution server's recording medium may be different from the program code executable on a terminal device. In other words, the format in which the program is stored on the distribution server does not matter as long as it can be downloaded from the distribution server and installed in a form that is executable on the terminal device. The program may be divided into multiple parts, each of which may be downloaded at different times and then combined on the terminal device, or each of the divided programs may be distributed by a different distribution server. Furthermore, the term "computer-readable recording medium" also includes a storage medium that stores a program for a certain period of time, such as volatile memory (RAM) within a computer system that serves as a server or client when a program is transmitted over a network. The program may also be a program that realizes part of the above-described functions. Furthermore, the program may be a so-called differential file (differential program) that can realize the above-described functions in combination with a program already stored in the computer system. [Explanation of symbols]

[0053] 100 GHG emission calculation device, 101 user interface unit, 102 control unit, 103 storage unit, 121 material-specific emission calculation unit, 122 process-specific emission calculation unit, 123 commercial material-specific emission calculation unit, 131 standard material-specific emission information storage unit, 132 process-specific emission information storage unit, 133 defect rate information storage unit, 134 waste-specific emission information storage unit

Claims

1. a material-equivalent emission calculation unit that calculates a material-equivalent emission amount, which is a greenhouse gas emission amount corresponding to a predetermined unit quantity of a material used in the production of a commercial product, based on a standard value of a greenhouse gas emission amount corresponding to each material; a process-related emission calculation unit that calculates, based on process-related unit emission information indicating greenhouse gas emissions corresponding to a process of processing a predetermined unit quantity of material in the production of the commercial material, an amount of greenhouse gas emissions that is the amount of greenhouse gas emissions when a predetermined processing amount of material is processed by the process; a commercial material-related emission calculation unit that calculates a commercial material-related emission amount corresponding to a commercial material manufactured from the material through the process, based on the material-related emission amount calculated by the material-related emission calculation unit and the process-related emission amount calculated by the process-related emission calculation unit; Equipped with the process-related emission calculation unit calculates a waste-related emission amount corresponding to the discarded amount of defective processed products generated in the one process, based on the defect rate in the one process and waste-related unit emission information indicating the greenhouse gas emission amount due to the discard of a predetermined unit quantity of processed products corresponding to the one process; The product-related emission calculation unit calculates the product-related emission based on the material-related emission, the process-related emission, and the waste-related emission. Greenhouse gas emissions calculation device.

2. When a material to be calculated contains a plurality of materials as components, the material-related emission calculation unit calculates the material-related emission based on standard values ​​of the greenhouse gas emission amount for each of the plurality of materials. The greenhouse gas emission calculation device according to claim 1 .

3. The process-related emission calculation unit corrects the processing amount of the material in a process subsequent to the first process based on the defect rate in the first process, and calculates the process-related emission amount when the corrected processing amount of the material is processed in the subsequent process. The greenhouse gas emission calculation device according to claim 1 or 2.

4. A computer as a greenhouse gas emission calculation device, a material-equivalent emission calculation unit that calculates, based on a standard value of greenhouse gas emission for each material, a material-equivalent emission amount that is a greenhouse gas emission amount corresponding to a predetermined unit quantity of a material used in the production of a predetermined commercial product; a process-related emission calculation unit that calculates, based on process-related unit emission information indicating greenhouse gas emissions corresponding to a process of processing a predetermined unit quantity of material in the production of the commercial material, the process-related emission amount, which is the greenhouse gas emission amount when a predetermined processing amount of material is processed by the process; a commercial material-related emission calculation unit that calculates a commercial material-related emission amount corresponding to a commercial material manufactured from the material through the process, based on the material-related emission amount calculated by the material-related emission calculation unit and the process-related emission amount calculated by the process-related emission calculation unit. It functions as the process-related emission calculation unit calculates a waste-related emission amount corresponding to the discarded amount of defective processed products generated in the one process, based on the defect rate in the one process and waste-related unit emission information indicating the greenhouse gas emission amount due to the discard of a predetermined unit quantity of processed products corresponding to the one process; The product-related emission calculation unit calculates the product-related emission based on the material-related emission, the process-related emission, and the waste-related emission. Program for.

5. a material-equivalent emission calculation step of calculating, based on a standard value of greenhouse gas emission for each material, a material-equivalent emission amount that is a greenhouse gas emission amount corresponding to a predetermined unit quantity of a material used in the production of a predetermined commercial product; a process-related emission calculation step of calculating, based on process-related unit emission information indicating greenhouse gas emission amounts corresponding to a process of processing a predetermined unit quantity of material in the production of the commercial material, an amount of greenhouse gas emission corresponding to the process, which is the amount of greenhouse gas emission when a predetermined processing amount of material is processed by the process; a commodity-related emission calculation step of calculating a commodity-related emission amount corresponding to a commodity manufactured from the material through the process, based on the material-related emission amount calculated in the material-related emission calculation step and the process-related emission amount calculated in the process-related emission calculation step; on the computer, The process-related emission calculation step calculates a waste-related emission amount corresponding to the discarded amount of defective processed products generated in the one process, based on a defect rate in the one process and waste-related unit emission information indicating the greenhouse gas emission amount due to the discard of a predetermined unit quantity of processed products corresponding to the one process; The product-related emission amount calculation step calculates the product-related emission amount based on the material-related emission amount, the process-related emission amount, and the waste-related emission amount. Greenhouse gas emissions calculation method.

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