GHG emission calculation system and GHG emission calculation method

Abstract

This invention provides a GHG emission calculation system and method that can appropriately calculate GHG emissions, taking into account GHG emission equipment located along the fluid transport route. [Solution] The processing circuit obtains the mass flow rate of the fluid flowing through the introduction pipeline, an identification code for the corresponding fluid, and the GHG emission amount associated with the identification code. It calculates the path emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment. It obtains the mass flow rate of the fluid flowing through the discharge pipeline, identifies the identification code of the fluid flowing through the discharge pipeline based on the mass flow rate of the fluid flowing through the discharge pipeline, and adds the path emission amount corresponding to the mass flow rate of the fluid flowing through the discharge pipeline to the GHG emission amount associated with the identified identification code.

Description

Technical Field

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[0005] ,

[0001] The present disclosure relates to a GHG emission calculation system and a GHG emission calculation method.

Background Art

[0002] Hydrogen is useful as a fuel that does not emit GHGs (Greenhouse Gases) such as carbon dioxide during use. However, in addition to the case of producing hydrogen, when performing predetermined processing on hydrogen such as compressing hydrogen or transporting hydrogen, the equipment or transportation means for performing the processing may emit GHGs.

[0003] Therefore, in the evaluation of GHG emissions when using hydrogen, it is required to evaluate the indirect GHG emissions from when hydrogen is generated until it is finally utilized as energy.

[0004] Regarding this, in Patent Document 1 below, in order to calculate the GHG emissions during fuel transportation, the GHG emissions in the fuel production means are calculated, and the GHG emissions and GHG emission unit corresponding to the flow rate of the fuel supplied from the fuel production means to the supply destination using the fuel transportation means are calculated.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] It is anticipated that hydrogen will take various transportation routes from the time it is produced until it reaches consumers who will use it. These transportation routes will include equipment for compressing and vaporizing hydrogen, and the hydrogen will undergo specific processing using this equipment. In this process, the equipment performing the processing on the hydrogen may also emit GHGs.

[0007] Patent Document 1 describes how, when multiple fuels are mixed, ID numbers are assigned to each fuel, and the ID numbers of the mixed fuels are associated with the ID numbers of the fuels before mixing. However, Patent Document 1 does not describe how to appropriately calculate GHG emissions considering GHG emission equipment along the transportation route, and there is room for improvement.

[0008] Furthermore, similar challenges may arise regarding the accurate calculation of GHG emissions for fluids other than hydrogen that are used as energy, such as ammonia.

[0009] This disclosure has been made in view of the above-mentioned issues and aims to provide a GHG emission calculation system and a GHG emission calculation method that can appropriately calculate GHG emissions considering GHG emission equipment located along the fluid transport route. [Means for solving the problem]

[0010] A GHG emission calculation system according to one aspect of the present disclosure is a GHG emission calculation system for calculating GHG emissions in a fluid transport route, wherein the fluid transport route comprises a GHG emission device and at least one pipeline connected to the fluid inlet side and the fluid outlet side of the GHG emission device, and includes a plurality of pipelines in which at least one of an inlet pipeline for introducing fluid into the GHG emission device and an outlet pipeline for discharging fluid from the GHG emission device is arranged in parallel, and the GHG emission calculation system comprises a flow detector for detecting the mass flow rate of the fluid in each pipeline and a processing circuit, wherein the processing circuit is The mass flow rate of the fluid flowing through the introduction pipeline, the identification code for the corresponding fluid, and the GHG emission amount associated with the identification code are obtained. The path emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment, is calculated. The mass flow rate of the fluid flowing through the discharge pipeline is obtained. The identification code of the fluid flowing through the discharge pipeline is identified based on the mass flow rate of the fluid flowing through the discharge pipeline. The path emission amount corresponding to the mass flow rate of the fluid flowing through the discharge pipeline is added to the GHG emission amount associated with the identified identification code.

[0011] A method for calculating GHG emissions according to another aspect of the present disclosure is a method for calculating GHG emissions in a fluid transport route, wherein the fluid transport route comprises a GHG emission device and at least one pipeline connected to the fluid inlet side and the fluid outlet side of the GHG emission device, and includes a plurality of pipelines in which at least one of an inlet pipeline for introducing fluid into the GHG emission device and an outlet pipeline for discharging fluid from the GHG emission device is arranged in parallel, and the GHG emission calculation method detects the mass flow rate of the fluid for each pipeline, and the fluid flowing through the inlet pipeline The system obtains the mass flow rate, the corresponding identification code for the fluid, and the GHG emission amount associated with the identification code. It calculates the path emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from the time it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment. The system obtains the mass flow rate of the fluid flowing through the discharge pipeline. Based on the mass flow rate of the fluid flowing through the discharge pipeline, it identifies the identification code of the fluid flowing through the discharge pipeline. The system adds the path emission amount corresponding to the mass flow rate of the fluid flowing through the discharge pipeline to the GHG emission amount associated with the identified identification code. [Effects of the Invention]

[0012] According to this disclosure, it is possible to appropriately calculate GHG emissions considering GHG emission equipment located along the fluid transport route. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a diagram showing the schematic configuration of a GHG emissions calculation system according to one embodiment of the present disclosure. [Figure 2] Figure 2 is a flowchart showing the flow of the GHG emission calculation process in this embodiment. [Figure 3] Figure 3 shows an example of how to identify the fluid flowing through the discharge pipeline in this embodiment. [Figure 4]Figure 4 is an illustrative diagram showing an example of adding path emissions in this embodiment. [Figure 5] Figure 5 is an illustrative diagram showing the process of adding the leakage amount in this embodiment. [Modes for carrying out the invention]

[0014] An embodiment will be described in detail below with reference to the drawings. In the following, the same or corresponding elements will be denoted by the same reference numerals throughout all the drawings, and redundant explanations will be omitted.

[0015] Figure 1 is a diagram showing a schematic configuration of a GHG emission calculation system according to one embodiment of the present disclosure. The GHG emission calculation system 1 calculates GHG emissions in a fluid transport route 10. The fluid flowing through the fluid transport route 10 is a fluid used as energy. For example, the fluid contains hydrogen or ammonia. The fluid transport route 10 includes a GHG emission device 11, an introduction pipeline 12 connected to the fluid introduction side of the GHG emission device 11, and an emission pipeline 13 connected to the fluid discharge side of the GHG emission device 11.

[0016] The GHG emitting device 11 is a device that emits GHGs during operation. GHG (Greenhouse Gas) is also called greenhouse gas and includes carbon dioxide, methane, nitrous oxide, etc. The GHG emitting device 11 is connected to an energy supply device 110 that supplies a predetermined amount of energy to the GHG emitting device 11. The GHG emitting device 11 is driven by consuming the energy supplied from the energy supply device 110. For example, the predetermined energy includes fossil fuels such as oil and gas, electricity, or both.

[0017] For example, the GHG emission device 11 is a fluid compressor that compresses a fluid. The fluid compressor is driven by fossil fuel or electricity. The fluid compressor driven by electricity may emit GHGs during the generation of the electricity. Also, the fluid compressor driven by fossil fuel may emit GHGs when the fossil fuel burns. Further, the GHG emission device 11 may be a vaporizer that vaporizes liquefied gas. In the vaporizer as well, fossil fuel or electricity may be used. Also, GHGs are emitted when manufacturing such a GHG emission device 11.

[0018] At least one of the introduction pipeline 12 and the discharge pipeline 13 includes a plurality of pipelines arranged in parallel with each other. In the present embodiment, both the introduction pipeline 12 and the discharge pipeline 13 include a plurality of pipelines. That is, as shown in FIG. 1, the introduction pipeline 12 includes three pipelines, and the discharge pipeline 13 includes two pipelines.

[0019] The introduction pipeline 12 includes a first introduction pipeline 121 connected to the first introduction side tank 21, a second introduction pipeline 122 connected to the second introduction side tank 22, and a third introduction pipeline 123 connected to the third introduction side tank 23. The discharge pipeline 13 includes a first discharge pipeline 131 connected to the first discharge side tank 31 and a second discharge pipeline 132 connected to the second discharge side tank 32.

[0020] In the present embodiment, for the sake of easy explanation, an example is shown in which the introduction pipeline 12 is a pipe for introducing the fluid stored in the introduction-side tanks 21, 22, 23 into the GHG emission device 11, and the discharge pipeline 13 is a pipe for sending the fluid discharged from the GHG emission device 11 to the discharge-side tanks 31, 32. However, the connection destinations of the introduction pipeline 12 and the discharge pipeline 13 are not limited to tanks. For example, another GHG emission device 11 may be connected to the pipelines 12, 13, or a moving body for transporting fluid such as a tank truck or a fluid carrier ship may be connected. Also, on the pipelines 12, 13, on-off valves and flow control valves may be installed at appropriate positions.

[0021] The fluid flowing through the pipeline may be a gas or a liquid. For example, when the GHG emission device 11 is a vaporizer, a liquefied gas such as liquefied hydrogen may flow through the introduction pipeline 12, and a gas such as hydrogen gas may flow through the discharge pipeline 13.

[0022] The GHG emission amount calculation system 1 regards the fluid transport path 10 including such a plurality of pipelines as one aggregate, that is, a tank, and calculates the GHG emission amount in the aggregate. For this purpose, the GHG emission amount calculation system 1 includes a flow rate detector and a processing circuit 4. The flow rate detector detects the mass flow rate of the fluid for each pipeline. For example, the flow rate detector may include a pressure detector and a temperature detector.

[0023] In the present embodiment, the flow rate detector includes a first introduction flow rate detector 51 that detects the mass flow rate of the fluid flowing through the first introduction pipeline 121, a second introduction flow rate detector 52 that detects the mass flow rate of the fluid flowing through the second introduction pipeline 122, a third introduction flow rate detector 53 that detects the mass flow rate of the fluid flowing through the third introduction pipeline 123, a first discharge flow rate detector 54 that detects the mass flow rate of the fluid flowing through the first discharge pipeline 131, and a second discharge flow rate detector 55 that detects the mass flow rate of the fluid flowing through the second discharge pipeline 132. The values detected by these flow rate detectors are sent to the processing circuit 4.

[0024] In this embodiment, each detector 51, 52, 53, 54, 55 and the processing circuit 4 are connected via a predetermined network 7a, such as the Internet. Each detector 51, 52, 53, 54, 55 has a communication circuit and transmits a detection signal including the detected value to the processing circuit 4 via the network 7a. The connection between each detector 51, 52, 53, 54, 55 and the processing circuit 4 may be wired or wireless. Alternatively, each detector 51, 52, 53, 54, 55 and the processing circuit 4 may be connected without going through the network 7a.

[0025] The processing circuit 4 performs various arithmetic operations. The processing circuit 4 includes a computer such as a microcontroller, personal computer, or PLC (Programmable Logic Controller). More specifically, the processing circuit 4 includes a processor 4a, a memory 4b, and peripheral circuits 4c. The processor 4a includes, for example, a CPU or MPU. The memory 4b includes ROM, RAM, registers, non-volatile storage, etc. The peripheral circuits 4c include input / output interfaces, etc. The processing circuit 4 may be connected to an output device such as a monitor for displaying output, a speaker for outputting sound, or an input device for user operation input.

[0026] The functions of the elements disclosed herein can be performed using circuits or processing circuits, including general-purpose processors, dedicated processors, integrated circuits, ASICs (Application Specific Integrated Circuits), conventional circuits, and / or combinations thereof, configured or programmed to perform the disclosed functions. Processor 4a is considered a processing circuit or circuit because it includes transistors and other circuits. In this specification, a circuit, unit, means, or part is hardware that performs the enumerated functions, or hardware programmed to perform the enumerated functions. The hardware may be hardware disclosed herein, or other known hardware that is programmed or configured to perform the enumerated functions. If the hardware is a processor, which is considered a type of circuit, the circuit, unit, or means is a combination of hardware and software, and the software is used to configure the hardware and / or the processor.

[0027] The memory 4b of the processing circuit 4 stores a calculation program for determining GHG emissions. The processing circuit 4 calculates GHG emissions based on the calculation program. Each fluid stored in the inlet tanks 21, 22, and 23 is pre-assigned an identification code to identify that fluid. For example, when fluid is stored in the first inlet tank 21, the GHG emissions generated directly or indirectly from the production of the fluid to its storage in the first inlet tank 21 are digitized and associated with the fluid's identification code.

[0028] In this embodiment, a server 6 that stores identification codes is connected to a processing circuit 4 via a predetermined network 7b such as the Internet. The server 6 has a storage area 61 that stores fluid information in the first inlet tank 21. When new fluid is stored in the first inlet tank 21, an identification code corresponding to the fluid introduced into the first inlet tank 21 and the corresponding GHG discharge amount are stored in the corresponding storage area 61 of the server 6 based on the operator's operation. The storage area 61 stores a tank ID for identifying the tank, a fluid ID indicating the identification code of the fluid stored in the tank, and data regarding the GHG discharge amount of the fluid.

[0029] The data regarding GHG emissions is, for example, a unit consumption that shows the GHG emissions per unit mass flow rate. Alternatively, the data regarding GHG emissions may be the GHG emissions per unit mass flow rate stored in the inlet tanks 21, 22, and 23, i.e., the value obtained by multiplying the unit consumption by the mass flow rate.

[0030] Server 6 also has memory areas for tanks other than the first inlet tank 21. Specifically, Server 6 has a memory area 62 corresponding to the second inlet tank 22, a memory area 63 corresponding to the third inlet tank 23, a memory area 64 corresponding to the first discharge tank 31, and a memory area 65 corresponding to the second discharge tank 32. When fluid is introduced into each inlet tank 21, 22, and 23, the corresponding fluid identification code and data related to GHG discharge are stored in the corresponding memory areas 61, 62, and 63. Alternatively, instead of associating the fluid identification code with the tank ID, an ID may be assigned to the pipeline itself, and the fluid identification code may be associated with the pipeline ID.

[0031] The processing circuit 4 and the server 6 may be connected by wire or wireless connection without going through the network 7b. Furthermore, the memory of the computer device equipped with the processing circuit 4 may have the above-mentioned memory areas 61, 62, 63, 64, and 65.

[0032] Figure 2 is a flowchart showing the flow of the GHG emission calculation process in this embodiment. The processing circuit 4 obtains the mass flow rate of the fluid flowing through the introduction pipeline 12 and the identification code for the corresponding fluid (step S1). At this time, the processing circuit 4 also obtains the GHG emission amount associated with the identification code.

[0033] For example, when fluid is supplied from the first inlet tank 21 to the GHG discharge equipment 11 via the first inlet pipeline 121, the detected value of the first inlet flow detector 51 is obtained. For example, the processing circuit 4 obtains the pressure and temperature detected by the first inlet flow detector 51, and calculates the amount of fluid present in the first inlet pipeline 121 using the equation of state from these values ​​and the known volume of the first inlet pipeline 121, thereby calculating the mass flow rate of the fluid flowing through the first inlet pipeline 121.

[0034] Furthermore, the processing circuit 4 obtains an identification code for the fluid flowing through the first inlet pipeline 121 and the GHG emission amount associated with that identification code. The processing circuit 4 also records the time when the supply of fluid from the first inlet tank 21 to the GHG emission device 11 begins. If fluid is supplied to the GHG emission device 11 from the second inlet tank 22 or the third inlet tank 23 via the corresponding inlet pipelines 122, 123, the processing circuit 4 similarly obtains the mass flow rate of the fluid flowing through the corresponding inlet pipelines 122, 123, an identification code for that fluid, and the GHG emission amount associated with that identification code.

[0035] The processing circuit 4 calculates the path emissions, which are the GHG emissions corresponding to the mass flow rate of the fluid from the time it is introduced into the introduction pipeline 12 until it is discharged from the discharge pipeline 13 through the GHG emission equipment 11 (step S2). For example, the GHG emission calculation system 1 includes a measuring instrument 8 that measures the energy consumed by the GHG emission equipment 11 in real time. The measuring instrument 8 is connected to the processing circuit 4. The connection configuration between the measuring instrument 8 and the processing circuit 4 is the same as the connection configuration between the detectors 51, 52, 53, 54, and 55 and the processing circuit 4. The processing circuit 4 acquires the amount of energy consumed measured by the measuring instrument 8. The processing circuit 4 includes the GHG emissions corresponding to the integrated energy from the time the fluid is introduced into the introduction pipeline 12 until it is discharged from the discharge pipeline 13 in the path emissions.

[0036] Furthermore, the processing circuit 4 may include GHG emissions other than those caused by energy consumed by the GHG emission equipment 11 as part of the route emissions. For example, consumer goods emissions are calculated based on the amount of consumer goods consumed in the fluid transport route 10. Consumer goods emissions are calculated as GHG emissions per unit time from the GHG emissions generated when manufacturing or replacing equipment such as pipelines and valves that constitute the fluid transport route 10, and the useful life of this equipment. The processing circuit 4 includes consumer goods emissions for the residence time from the time the fluid is introduced into the introduction pipeline 12 to the time it is discharged from the discharge pipeline 13 in the route emissions.

[0037] The processing circuit 4 obtains the mass flow rate of the fluid flowing through the discharge pipeline 13 (step S3). Based on the mass flow rate of the fluid flowing through the discharge pipeline 13, the processing circuit 4 identifies the identification code of the fluid flowing through the discharge pipeline 13 (step S4). In this embodiment, if the introduction pipeline 12 includes multiple introduction pipelines 121, 122, and 123, the processing circuit 4 identifies the identification code of the fluid flowing through the discharge pipeline 13, assuming that the fluid is discharged from the discharge pipeline 13 in the order in which the fluid was introduced from among the multiple introduction pipelines 121, 122, and 123.

[0038] Figure 3 shows an example of the fluid identification method for the fluid flowing through the discharge pipeline in this embodiment. In Figure 3, the upper graph shows the time change of the detected value at the first inlet flow detector 51, the middle graph shows the time change of the detected value at the second inlet flow detector 52, and the lower graph shows the time change of the detected value at the first discharge flow detector 54.

[0039] In the example shown in Figure 3, a fluid with a mass flow rate of X1 is introduced to the GHG discharge device 11 from the first inlet pipeline 121 during the period from time T1 to T2, and a fluid with a mass flow rate of X2 is introduced to the GHG discharge device 11 from the second inlet pipeline 122 during the period from time T2 to T3. In addition, in the example shown in Figure 3, the fluid discharged from the GHG discharge device 11 is discharged from the first discharge pipeline 131.

[0040] At this time, the fluid introduced into the GHG discharge equipment 11 begins to flow through the first discharge pipeline 131 at time T4. Time T4 is the time after a residence time ΔT has elapsed since time T1. From time T4 until time T5, when the mass flow rate of the fluid flowing through the first discharge pipeline 131 reaches X1, the fluid introduced from the first inlet pipeline 121 (H-01) is identified as the fluid flowing through the first discharge pipeline 131. After time T5, the fluid flowing through the first discharge pipeline 131 is identified as the fluid introduced from the second inlet pipeline 122 (H-02).

[0041] Furthermore, for example, if GHG is introduced to the GHG discharge equipment 11 from both the first inlet pipeline 121 and the second inlet pipeline 122 after time T3, it is identified that after a residence time ΔT has elapsed from time T3, both fluids flow through the discharge pipeline 13 at a flow rate ratio per unit time for both fluids in the first inlet pipeline 121 and the second inlet pipeline 122.

[0042] Furthermore, when the discharge pipeline 13 includes a plurality of discharge pipelines 131 and 132 as in this embodiment, the processing circuit 4 identifies the identification code of the fluid flowing through the discharge pipelines 131 and 132 on the assumption that the fluid is discharged from the discharge pipelines 131 and 132 in the order of the timing when the fluid is discharged.

[0043] When fluids are simultaneously introduced from the plurality of introduction pipelines 121, 122, and 123 and simultaneously discharged from the plurality of discharge pipelines 131 and 132, the processing circuit 4 identifies the identification code of the fluid flowing through the discharge pipelines 131 and 132 on the assumption that the fluid introduced from each introduction pipeline 121, 122, and 123 is discharged at a ratio corresponding to the ratio of the mass flow rates of the fluids flowing through each discharge pipeline 131 and 132.

[0044] Alternatively, the processing circuit 4 may identify the fluid corresponding to the mass flow rate of the fluid flowing through the first discharge pipeline 131 on the assumption that the fluid is discharged from the first discharge pipeline 131 in a predetermined priority order set for the plurality of introduction pipelines 121, 122, and 123, and identify the fluid corresponding to the mass flow rate of the fluid flowing through the second discharge pipeline 132 from the remaining fluids among the plurality of introduction pipelines 121, 122, and 123.

[0045] For example, it is exemplified that the mass flow rate of the fluid flowing through the first introduction pipeline 121 is X1, the mass flow rate of the fluid flowing through the second introduction pipeline 122 is X2, the mass flow rate of the fluid flowing through the first discharge pipeline 131 is Y1, the mass flow rate of the fluid flowing through the second discharge pipeline 132 is Y2, and the relationship between the mass flow rates is X1 < Y1 < X1 + X2. In this case, the fluid flowing through the first discharge pipeline 131 is identified as the fluid (H-01) with a mass flow rate of X1 out of the total amount flowing through the first introduction pipeline 121, and the fluid with a mass flow rate of Y1 - X1 out of the total amount is identified as the fluid (H-02) flowing through the second introduction pipeline 122. Also, the fluid flowing through the second discharge pipeline 132 is identified as the fluid (H-02) flowing through the second introduction pipeline 122 in its entirety.

[0046] The processing circuit 4 adds a path discharge amount equal to the mass flow rate of the fluid flowing through the discharge pipeline 13 to the GHG discharge amount associated with the identified identification code (step S5). Figure 4 is an illustrative diagram showing an example of adding a path discharge amount in this embodiment. In the example in Figure 4, the case where all the fluid introduced from the three inlet pipelines 121, 122, and 123 is discharged from a single discharge pipeline 131 is illustrated.

[0047] In the graph in Figure 4, the horizontal axis shows the unit GHG emission intensity up to the fluid transport path 10, and the vertical axis shows the mass flow rate for each introduction pipeline. For the fluid introduced from the first introduction pipeline 121 (H-01), the mass flow rate is X1 and the unit GHG emission intensity is Go1. The total GHG emission for the fluid introduced from the first introduction pipeline 121 is represented as the area G1 obtained by multiplying the unit intensity Go1 by the mass flow rate X1. Similarly, for the fluid introduced from the second introduction pipeline 122 (H-02) and the fluid introduced from the third introduction pipeline 123 (H-03), the mass flow rates are X2 and X3, the GHG emission intensity is Go2 and Go3, and the GHG emission is G2 and G3, respectively.

[0048] The total amount of fluid introduced from each introduction pipeline 121, 122, and 123, when discharged from the GHG emission device 11, is also represented in the graph of Figure 3 by the areas Gp1, Gp2, and Gp3 obtained by multiplying the GHG emission intensity by the mass flow rate. The intensity of the path emissions Gp1, Gp2, and Gp3 may change depending on the cumulative value of the energy consumption measured by the measuring instrument 8 during the period in which the fluid is introduced into the GHG emission device 11.

[0049] The processing circuit 4 stores the GHG discharge amount, which has an identification code and route discharge amount corresponding to the fluid discharged from the discharge pipeline 13, in a predetermined memory (step S6). In this embodiment, the processing circuit 4 transmits the GHG discharge amount, which has an identification code and route discharge amount corresponding to the fluid discharged from the discharge pipeline 13, to the server 6. The server 6 stores the data of the fluid discharged from the first discharge pipeline 131, associating it with the tank ID (T-31) of the first discharge-side tank 31 connected to the first discharge pipeline 131.

[0050] If the total volume of fluid discharged from the first discharge pipeline 131 corresponds to one of the fluid identification codes (H-01, H-02, H-03) used at the time of introduction, the fluid identification code discharged from the first discharge pipeline 131 may remain the same as the fluid identification code (H-01, H-02, or H-03) used at the time of introduction. Alternatively, a new fluid identification code (H-04) may be assigned.

[0051] If the fluid discharged from the first discharge pipeline 131 corresponds to two or more identification codes at the time of introduction, a new identification code (H-04) is assigned to the fluid discharged from the first discharge pipeline 131. When a new identification code is assigned to a fluid, this new identification code can be stored in association with the identification code at the time of introduction. In this case, the identification codes at the time of introduction that are associated with the identification code (H-04) of the fluid discharged from the first discharge pipeline 131 are the identification code (H-01) of the fluid flowing through the first introduction pipeline 121, the identification code (H-02) of the fluid flowing through the second introduction pipeline 122, the identification code (H-03) of the fluid flowing through the third introduction pipeline 123, or a combination thereof.

[0052] The data (data04) for GHG emissions from the fluid discharged from the first discharge pipeline 131 includes the GHG emissions before the fluid is introduced from the introduction pipeline 12 to the GHG emission equipment 11 and the corresponding path emissions for the fluid associated with the identification code (H-04) of the fluid discharged from the first discharge pipeline 131. In the example in Figure 4, the data for GHG emissions from the fluid discharged from the first discharge pipeline 131 includes the sum of GHG emissions (G1+G2+G3) and the sum of path emissions (Gp1+Gp2+Gp3) corresponding to the fluid introduced from the three introduction pipelines 121, 122, and 123.

[0053] The GHG emission data may be the sum of GHG emissions corresponding to the fluid in the first discharge tank 31, or it may be data separated by item. For example, the items in the GHG emission data may include the identification codes H-01, H-02, H-03 of the constituent fluid before introduction to the GHG emission equipment 11, the GHG emissions G1, G2, G3 for each identification code before introduction to the GHG emission equipment 11, and the route emissions Gp1, Gp2, Gp3 for each identification code. Thus, adding route emissions corresponding to the mass flow rate of the fluid in the discharge pipeline 13 to the GHG emissions associated with the identified identification code includes adding the route emissions corresponding to the GHG emissions associated with the identified identification code, or adding the corresponding route emissions item as a data item for the GHG emissions associated with the identified identification code.

[0054] Similarly, when the fluid discharged from the GHG discharge equipment 11 flows through the second discharge pipeline 132, the server 6 stores data on the fluid discharged from the second discharge pipeline 132, associating it with the tank ID (T-32) of the second discharge-side tank 32 connected to the second discharge pipeline 132. The data on GHG emissions stored in the server 6 can be viewed by consumers and others who use the fluid downstream of the corresponding discharge pipeline 13 by accessing the server 6.

[0055] According to this embodiment, the fluid transport route 10, which includes multiple pipelines, is considered as a single entity, and the route emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline 12 to when it is discharged from the discharge pipeline 13 through the GHG discharge equipment 11, is calculated. In this case, the identification code of the fluid discharged from the discharge pipeline 13 is identified with the identification code of the fluid introduced into the introduction pipeline 12, and the route emission amount is added to the GHG emission amount for the identified identification code. This makes it possible to add the GHG emission amount at the GHG discharge equipment 11 for each identification code of the fluid introduced from the introduction pipeline 12. Therefore, the GHG emission amount considering the GHG discharge equipment 11 located along the fluid transport route 10 can be appropriately calculated.

[0056] This allows for accurate tracking of GHG emissions from fluids used by fluid consumers downstream of the fluid transport route 10. It also provides consumers with indicators for selecting the fluids they use. Furthermore, it can increase motivation for pipeline operators to reduce GHG emissions.

[0057] Furthermore, according to this embodiment, assuming that the fluid is discharged from the discharge pipeline 13 in the order in which the fluid was introduced from among the multiple inlet pipelines 121, 122, and 123, an identification code for the fluid flowing through the discharge pipeline 13 is identified. This makes it easy to identify the fluid.

[0058] Furthermore, according to this embodiment, the GHG emissions are calculated as route emissions based on the cumulative energy consumed by the GHG emission equipment 11 from the time the fluid is introduced into the introduction pipeline 12 to the time it is discharged from the discharge pipeline 13. This makes it possible to add accurate GHG emissions corresponding to the actual amount of energy consumed by the GHG emission equipment 11 while the fluid is flowing to the route emissions.

[0059] Furthermore, according to this embodiment, as route emissions, consumer goods emissions, which are GHG emissions calculated based on the amount of consumer goods consumed in the fluid transport route 10, are included in proportion to the residence time of the fluid in the fluid transport route 10. This makes it possible to add GHG emissions corresponding to the energy required to manufacture, maintain, or manage the fluid transport route 10, as well as the energy actually consumed by the GHG emission equipment 11, to the route emissions.

[0060] Furthermore, the processing circuit 4 can take into account the amount of fluid leakage in the fluid transport path 10 when calculating the amount of fluid discharged along the path. In this case, the processing circuit 4 calculates the amount of fluid leakage in the fluid transport path 10 using the total mass flow rate Xt of the fluid introduced into the introduction pipeline 12, the total mass flow rate Yt of the fluid discharged from the discharge pipeline 13, and the mass flow rate Zr of the fluid remaining in the fluid transport path 10.

[0061] In this embodiment, the processing circuit 4 calculates the total introduced mass flow rate Xt by adding the mass flow rate X1 obtained from the first introduced flow rate detector 51, the mass flow rate X2 obtained from the second introduced flow rate detector 52, and the mass flow rate X3 obtained from the third introduced flow rate detector 53 at a certain time Tin. That is, the processing circuit 4 calculates Xt = X1 + X2 + X3. The processing circuit 4 calculates the total discharged mass flow rate Yt by adding the mass flow rate Y1 obtained from the first discharge flow rate detector 54 and the mass flow rate Y2 obtained from the second discharge flow rate detector 55 at time Tout, after a residence time ΔT has elapsed from time Tin. That is, the processing circuit 4 calculates Yt = Y1 + Y2.

[0062] Furthermore, the processing circuit 4 calculates the mass Zr of the fluid remaining in the fluid transport path 10. The mass Zr of the fluid remaining in the fluid transport path 10 is calculated as the sum of the mass Zr12 of the fluid remaining in the introduction pipeline 12 and the mass Zr13 of the fluid remaining in the discharge pipeline 13. The mass Zr1 of the fluid remaining in the introduction pipeline 12 is calculated using the equation of state from the pressure P12 in the introduction pipeline 12, the volume V12 of the internal space of the introduction pipeline 12, and the temperature T12 in the introduction pipeline 12.

[0063] Furthermore, the pressure P12 and temperature T12 within the introduction pipeline 12 may be obtained by averaging the pressure and temperature detected by the introduction flow detectors 51, 52, and 53, respectively. In addition, if the pressure and temperature on the inlet side of the GHG discharge equipment 11 are measured, the pressure P12 and temperature T12 within the introduction pipeline 12 may be calculated using the pressure and temperature on the inlet side of the GHG discharge equipment 11, in addition to or instead of the values ​​detected by the introduction flow detectors 51, 52, and 53. The volume V12 of the internal space of the introduction pipeline 12 is stored in the memory 4b of the processing circuit 4 based on a previously measured value.

[0064] Similarly, the mass Zr13 of the fluid remaining in the discharge pipeline 13 is calculated using the equation of state from the pressure P13 in the discharge pipeline 13, the volume V13 of the internal space of the discharge pipeline 13, and the temperature T12 in the discharge pipeline 13.

[0065] The processing circuit 4 calculates the fluid leakage amount W by subtracting the total discharge mass flow rate Yt and the change in the mass Zr of the fluid remaining in the fluid transport path 10, ΔZr, from the calculated total inlet mass flow rate Xt. That is, the processing circuit 4 calculates W = Xt - Yt - ΔZr. The processing circuit 4 adds to the path discharge amount the amount of GHG discharged, which corresponds to the fluid leakage amount W relative to the mass flow rate of the fluid flowing through the discharge pipeline 13.

[0066] Figure 5 is an illustrative diagram showing the process of adding the leakage amount in this embodiment. The example in Figure 5 shows the case where all the fluid introduced from the first inlet pipeline 121 to the GHG discharge equipment 11 is discharged from the first discharge pipeline 131. As shown in Graph 41 of Figure 5, consider the case where the mass flow rate of the fluid introduced into the first inlet pipeline 121 is X1, and the amount of fluid leakage in the fluid transport path 10 when the fluid with the mass flow rate X1 is discharged from the first discharge pipeline 131 is W1. In this case, the mass flow rate of the fluid actually discharged from the first discharge pipeline 131 is X1-W1, as shown in Graph 42 of Figure 5.

[0067] However, it is thought that GHG is discharged by the GHG discharge equipment 11 not only from the fluid that is actually discharged, but also from the fluid that leaks out by W1. For this reason, without considering the leak amount W1, the path discharge amount Gp1n corresponding to the mass flow rate X1-W1 of the fluid flowing through the discharge pipeline 13 will be less than the GHG discharge amount generated by passing through the fluid transport path 10 by the path discharge amount Gpw generated for the fluid that leaks out by W1.

[0068] Therefore, when considering the leakage amount W1, the path discharge amount Gpw generated for the amount of fluid leaked by W1 is added to the path discharge amount Gp1n corresponding to the mass flow rate X1-W1 of the fluid flowing through the discharge pipeline 13. In this case, as shown in graph 43 of Figure 5, the unit consumption of GHG emissions increases from Go1p to Go1pw in response to the decrease in the mass flow rate of the fluid. That is, in graph 43, the path discharge amount Gp1 considering the leakage amount W1 is shown as the area obtained by adding the shaded area Sw, which is the same area as the area of ​​the path discharge amount Gpw generated for the amount of fluid leaked by W1, to the path discharge amount Gp1n, which is shown as the area obtained by multiplying the unit consumption amount Go1p by the mass flow rate X1-W1. Similarly, when fluid is introduced from other introduction pipelines 122 and 123, the path discharge amount according to the leakage amount is calculated.

[0069] In this way, by adding a path discharge amount that takes into account the amount of fluid leakage in the fluid transport path 10, the amount of GHG emissions due to passing through the fluid transport path 10 can be calculated more accurately.

[0070] Furthermore, if the leakage rate per unit mass flow rate in the fluid transport path 10 can be considered constant, the above-described calculation of leakage rate is not performed, and a predetermined fixed value is used as the leakage rate, and the path discharge amount that takes into account the fluid leakage rate in the fluid transport path 10 can be added. Also, if the GHG discharge amount Gpw corresponding to the leakage rate is a negligible amount, the GHG discharge amount corresponding to the leakage rate does not need to be added to the path discharge amount. Alternatively, the processing circuit 4 may calculate the leakage rate, and if the leakage rate is above a predetermined threshold, it may add the GHG discharge amount corresponding to the leakage rate to the path discharge amount.

[0071] Furthermore, in this embodiment, an example was given in which the leakage amount W is added to the mass flow rates X1, X2, and X3 of the fluid introduced into the introduction pipeline 12. However, the leakage amount W may also be added to the mass flow rates Y1 and Y2 of the fluid flowing through the discharge pipeline 13.

[0072] While embodiments of this disclosure have been described above, this disclosure is not limited to the embodiments described above, and various improvements, changes, and modifications are possible without departing from the spirit of the disclosure.

[0073] [Other embodiments] For example, in the above embodiment, the route emissions are exemplified as GHG emissions corresponding to the cumulative value of energy consumed by the GHG emission equipment 11 from the time the fluid is introduced into the introduction pipeline 12 to the time it is discharged from the discharge pipeline 13, and consumer goods emissions, which are GHG emissions calculated based on the amount of consumer goods consumed in the fluid transport route 10. However, only one of these may be included as route emissions. Furthermore, route emissions may include GHG emissions corresponding to energy indirectly consumed by operating the GHG emission equipment 11, such as GHG emissions during power generation for electricity generated at a thermal power plant, and energy consumed in the back office. In addition, route emissions may include GHG emissions corresponding to the expenses incurred by workers, etc., for operating the GHG emission equipment 11.

[0074] Furthermore, in the above embodiment, the residence time ΔT between the time the fluid is introduced into the introduction pipeline 12 and the time it is discharged from the discharge pipeline 13 was assumed to be constant regardless of which of the multiple introduction pipelines 121, 122, and 123 the fluid passed through and which of the multiple discharge pipelines 131 and 132 the fluid passed through. However, the residence time ΔT may be set to different values ​​depending on the route the fluid takes through the pipeline. In this case, the residence time ΔT corresponding to the route may be calculated by multiplying the reference residence time by a coefficient corresponding to the distance of the introduction and discharge pipelines the fluid passed through. Alternatively, multiple residence times corresponding to multiple routes may be set in advance. In addition, the residence time ΔT may be set to different values ​​depending on the pipe diameter of the pipeline.

[0075] Furthermore, in the above embodiment, an example was shown in which the inlet pipeline 12 includes multiple inlet pipelines 121, 122, and 123, and the discharge pipeline 13 includes multiple discharge pipelines 131 and 132. However, either the inlet pipeline 12 or the discharge pipeline 13 may be composed of a single pipeline. Also, the number of multiple inlet pipelines and multiple discharge pipelines are not limited to the above embodiment and can be set as appropriate.

[0076] Furthermore, although the above embodiment illustrates a configuration in which one GHG emission device 11 is included in the fluid transport path 10, the embodiment is not limited to this, and two or more GHG emission devices 11 may be included in the fluid transport path 10. In this case, the multiple GHG emission devices 11 may be connected in series or in parallel by a pipeline. The multiple GHG emission devices 11 may include two or more GHG emission devices, each consuming different amounts of energy. The fluid transport path 10 can be set up in the path between the inlet pipeline 12 and the discharge pipeline 13, as long as the mass flow rates of the inlet pipeline 12 and the discharge pipeline 13 can be specified.

[0077] Thus, the fluid transport route 10 can branch and merge in various ways along its course. According to the GHG emission calculation system 1 in the above embodiment, even if the fluid transport route 10 has a more complex route, the route emission amount in the fluid transport route 10 is calculated from the mass flow rate and introduction timing of the fluid in the introduction pipeline 12 into which the fluid is introduced, and the mass flow rate and discharge timing of the fluid in the discharge pipeline 13 into which the fluid is discharged from the fluid transport route 10.

[0078] Therefore, by including multiple branching points or multiple aggregation points in the fluid transport route 10, the amount of computation can be reduced compared to calculating the individual GHG emissions at each branching point or aggregation point in the fluid transport route. This reduces the computational power required in the processing circuit 4, or increases the computation speed in the processing circuit 4. In addition, by including multiple branching points or multiple aggregation points in the fluid transport route 10, the number of GHG emission management points can be reduced, simplifying the GHG emission management system.

[0079] Furthermore, while the above embodiment illustrates a configuration in which the server 6 stores identification codes corresponding to the fluids flowing through the corresponding introduction pipelines 121, 122, and 123, the embodiment is not limited to this. For example, a mobile vehicle for transporting fluids, such as a tank truck or fluid carrier, for supplying fluids to the introduction tanks 21, 22, and 23 or the introduction pipelines 121, 122, and 123, may be equipped with an identifier such as a barcode or two-dimensional code indicating the identification code of the fluid stored in the mobile vehicle. In this case, when the mobile vehicle supplies fluids to the introduction tanks 21, 22, and 23 or the introduction pipelines 121, 122, and 123, the operator may read the identifier with a code reader connected to the processing circuit 4, thereby allowing the processing circuit 4 to acquire the identification code corresponding to the supplied fluid. Alternatively, the mobile vehicle may be equipped with a memory such as a USB memory for storing the identification codes. Other methods for storing and acquiring identification codes may include configurations conceivable from known technologies.

[0080] [Summary of this disclosure] [Item 1] A GHG emission calculation system according to one aspect of the present disclosure is a GHG emission calculation system for calculating GHG emissions in a fluid transport route, wherein the fluid transport route comprises a GHG emission device and at least one pipeline connected to the fluid inlet side and the fluid outlet side of the GHG emission device, and includes a plurality of pipelines in which at least one of an inlet pipeline for introducing fluid into the GHG emission device and an outlet pipeline for discharging fluid from the GHG emission device is arranged in parallel, and the GHG emission calculation system comprises a flow detector for detecting the mass flow rate of the fluid in each pipeline and a processing circuit, wherein the processing circuit is The mass flow rate of the fluid flowing through the introduction pipeline, the identification code for the corresponding fluid, and the GHG emission amount associated with the identification code are obtained. The path emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment, is calculated. The mass flow rate of the fluid flowing through the discharge pipeline is obtained. The identification code of the fluid flowing through the discharge pipeline is identified based on the mass flow rate of the fluid flowing through the discharge pipeline. The path emission amount corresponding to the mass flow rate of the fluid flowing through the discharge pipeline is added to the GHG emission amount associated with the identified identification code.

[0081] According to the above configuration, a fluid transport route including multiple pipelines is considered as a single entity, and the route emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline to when it is discharged from the discharge pipeline through the GHG discharge equipment, is calculated. In this case, the identification code of the fluid discharged from the discharge pipeline is identified with the identification code of the fluid introduced into the introduction pipeline, and the route emission amount is added to the GHG emission amount for the identified identification code. This makes it possible to add the GHG emission amount at the GHG discharge equipment for each identification code of the fluid introduced from the introduction pipeline. Therefore, it is possible to appropriately calculate the GHG emission amount that takes into account the GHG discharge equipment located along the fluid transport route.

[0082] [Item 2] In the GHG emission calculation system of item 1, the introduction pipeline may include multiple introduction pipelines, and the processing circuit may identify the identification code of the fluid flowing through the discharge pipeline, assuming that the fluid is discharged from the discharge pipeline in the order in which the fluid was introduced from among the multiple introduction pipelines. This makes it easy to identify the fluid.

[0083] [Item 3] In the GHG emission calculation system of item 1 or 2, the processing circuit may calculate the amount of fluid leakage in the fluid transport path using the total mass flow rate of the fluid introduced into one or more introduction pipelines, the total mass flow rate of the fluid discharged from one or more discharge pipelines, and the mass flow rate of the fluid remaining in the fluid transport path, and add to the path emission amount a GHG emission amount corresponding to the ratio of the fluid leakage amount to the mass flow rate of the fluid flowing through the discharge pipeline. By adding a path emission amount that takes into account the amount of fluid leakage in the fluid transport path, the GHG emission amount due to passing through the fluid transport path can be calculated more precisely.

[0084] [Item 4] Any of the GHG emission calculation systems described in items 1 to 3 includes a measuring instrument that measures the energy consumed by the GHG emission equipment in real time, and the processing circuit may include in the path emissions the GHG emissions corresponding to the cumulative value of the energy from the time the fluid is introduced into the introduction pipeline to the time it is discharged from the discharge pipeline. This makes it possible to add accurate GHG emissions corresponding to the amount of energy actually consumed by the GHG emission equipment while the fluid is flowing to the path emissions.

[0085] [Item 5] In any of the GHG emission calculation systems described in items 1 to 4, the processing circuit may obtain consumer goods emissions, which are GHG emissions per unit time calculated based on the consumption of consumer goods in the fluid transport route, and may include the consumer goods emissions for the residence time from the time the fluid is introduced into the introduction pipeline to the time it is discharged from the discharge pipeline in the route emissions. This makes it possible to add GHG emissions corresponding to the energy required to manufacture, maintain, or manage the fluid transport route to the route emissions.

[0086] [Item 6] In any of the GHG emission calculation systems described in items 1 to 5, the GHG emission equipment may include a fluid compressor.

[0087] [Item 7] In any of the GHG emission calculation systems described in items 1 to 6, the fluid may contain hydrogen or ammonia.

[0088] [Item 8] A method for calculating GHG emissions according to another aspect of the present disclosure is a method for calculating GHG emissions in a fluid transport route, wherein the fluid transport route comprises a GHG emission device and at least one pipeline connected to the fluid inlet side and the fluid outlet side of the GHG emission device, and includes a plurality of pipelines in which at least one of an inlet pipeline for introducing fluid into the GHG emission device and an outlet pipeline for discharging fluid from the GHG emission device is arranged in parallel, and the GHG emission calculation method detects the mass flow rate of the fluid for each pipeline, and the fluid flowing through the inlet pipeline The system obtains the mass flow rate, the corresponding identification code for the fluid, and the GHG emission amount associated with the identification code. It calculates the path emission amount, which is the GHG emission amount corresponding to the mass flow rate of the fluid from the time it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment. The system obtains the mass flow rate of the fluid flowing through the discharge pipeline. Based on the mass flow rate of the fluid flowing through the discharge pipeline, it identifies the identification code of the fluid flowing through the discharge pipeline. The system adds the path emission amount corresponding to the mass flow rate of the fluid flowing through the discharge pipeline to the GHG emission amount associated with the identified identification code. [Explanation of symbols]

[0089] 1. GHG Emissions Calculation System 4 Processing Circuit 8 Measuring Instruments 10 Fluid transport pathways 11 GHG emitting equipment 12,121,122,123 Implementation Pipeline 13,131,132 Emission pipeline 51, 52, 53, 54, 55 Flow detector

Claims

1. A GHG emission calculation system for calculating GHG emissions in fluid transport routes, The fluid transport path comprises a GHG discharge device and at least one pipeline connected to the fluid inlet side and the fluid discharge side of the GHG discharge device, and includes a plurality of pipelines in which at least one of the inlet pipelines for introducing fluid into the GHG discharge device and the discharge pipelines for discharging fluid from the GHG discharge device are arranged in parallel. The aforementioned GHG emission calculation system is: A flow detector for detecting the mass flow rate of the fluid in each of the aforementioned pipelines, A processing circuit is provided, The aforementioned processing circuit is The mass flow rate of the fluid flowing through the introduction pipeline, the identification code for the corresponding fluid, and the GHG emissions associated with the identification code are obtained. The path discharge amount, which is the GHG discharge amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment, is calculated. The mass flow rate of the fluid flowing through the discharge pipeline is obtained, and the identification code of the fluid flowing through the discharge pipeline is identified based on the mass flow rate of the fluid flowing through the discharge pipeline. A GHG emission calculation system that adds the path emission amount, which is the mass flow rate of the fluid flowing through the emission pipeline, to the GHG emission amount associated with the identified identification code.

2. The aforementioned deployment pipeline includes multiple deployment pipelines, The GHG emission calculation system according to claim 1, wherein the processing circuit identifies the identification code of the fluid flowing through the discharge pipeline, assuming that the fluid is discharged from the discharge pipeline in the order in which the fluid was introduced from among the plurality of introduction pipelines.

3. The aforementioned processing circuit is The amount of fluid leakage in the fluid transport path is calculated using the total mass flow rate of the fluid introduced into one or more of the introduction pipelines, the total mass flow rate of the fluid discharged from one or more of the discharge pipelines, and the mass flow rate of the fluid remaining in the fluid transport path. The GHG emission calculation system according to claim 1 or 2, wherein the GHG emission amount is added to the route emission amount according to the ratio of the amount of leakage of the fluid to the mass flow rate of the fluid flowing through the emission pipeline.

4. The equipment includes a measuring instrument that measures the energy consumed by the aforementioned GHG emission equipment in real time. The GHG emission calculation system according to claim 1 or 2, wherein the processing circuit includes in the route emission amount a GHG emission corresponding to the integrated value of the energy from the time the fluid is introduced into the introduction pipeline to the time it is discharged from the discharge pipeline.

5. The aforementioned processing circuit is The consumer goods emissions, which are GHG emissions per unit time calculated based on the amount of consumer goods consumed in the aforementioned fluid transport route, are obtained. The GHG emission calculation system according to claim 1 or 2, wherein the amount of consumer goods discharged for the residence time from the time the fluid is introduced into the introduction pipeline to the time it is discharged from the discharge pipeline is included in the route emission.

6. The GHG emission calculation system according to claim 1 or 2, wherein the GHG emission equipment includes a fluid compressor.

7. The GHG emission calculation system according to claim 1 or 2, wherein the fluid comprises hydrogen or ammonia.

8. A method for calculating GHG emissions in a fluid transport route, The fluid transport path comprises a GHG discharge device and at least one pipeline connected to the fluid inlet side and the fluid discharge side of the GHG discharge device, and includes a plurality of pipelines in which at least one of the inlet pipelines for introducing fluid into the GHG discharge device and the discharge pipelines for discharging fluid from the GHG discharge device are arranged in parallel. The above method for calculating GHG emissions is: The mass flow rate of the fluid is detected for each of the aforementioned pipelines. The mass flow rate of the fluid flowing through the introduction pipeline, the identification code for the corresponding fluid, and the GHG emissions associated with the identification code are obtained. The path discharge amount, which is the GHG discharge amount corresponding to the mass flow rate of the fluid from when it is introduced into the introduction pipeline until it is discharged from the discharge pipeline through the GHG discharge equipment, is calculated. The mass flow rate of the fluid flowing through the discharge pipeline is obtained, and the identification code of the fluid flowing through the discharge pipeline is identified based on the mass flow rate of the fluid flowing through the discharge pipeline. A method for calculating GHG emissions, comprising adding the path emissions, which are the mass flow rate of the fluid flowing through the emission pipeline, to the GHG emissions associated with the identified identification code.

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