Signal product carbon emission evaluation method and system based on LCA and medium

Abstract

The invention relates to an LCA-based signal product carbon emission evaluation method and system, and a medium. The method comprises the following steps: collecting and summarizing resource and energy consumption of a signal product applied to a line boundary range and a production and transportation list of the resource and the energy; according to the consumption of the resources and the energy and the production and transportation list of the resources and the energy, obtaining carbon emission of the signal product in a building material production stage, a signal engineering construction stage and an operation stage; according to the carbon emissions of the building material production stage, the signal engineering construction stage and the operation stage, the carbon emissions of the signal product in the downstream disassembly and scrapping stage are obtained; energy consumption, resource consumption and carbon emission generated by transportation of the signal product in each stage are collected and gathered, and greenhouse effect evaluation is carried out on the total carbon emission of the signal product in the life cycle by combining greenhouse influence GWP evaluation. Compared with the prior art, the carbon emission evaluation of the complete stage of the rail transit system is realized.

Description

Technical Field

[0001] The present invention relates to the field of rail transit carbon emissions, and in particular to an LCA-based signal product carbon emissions evaluation method, system and medium. Background Art

[0002] As countries around the world continue to pay more attention to climate issues and environmental pollution, reducing total carbon emissions and controlling and managing environmental pollution have become the focus of attention for all countries. Rail transit is one of the concentrated areas of urban greenhouse gas emissions. Research on carbon emissions from urban rail transit, whether it is the current status of carbon emissions, carbon emission forecast research, or carbon reduction potential analysis, is based on the measurement of carbon emissions.

[0003] At present, there are few studies on carbon emissions from urban rail transit, including carbon emission accounting in the early stages of line construction (including the transportation of construction materials) and later stages of equipment scrapping (including the transportation of scrapped materials). There is a lack of research covering the entire stage of the rail transit system.

[0004] For example, patent application CN 118604243 A discloses a distributed rail transit carbon emission monitoring system. This method obtains the energy consumption data, carbon emission data and operation data of each terminal device through the terminal data acquisition module and the distributed data acquisition module, and conducts a comprehensive analysis through the carbon emission integration module. It also preliminarily determines whether the carbon emission data is normal based on the consistency of the carbon emission high-point track segment and the floating carbon emission high-point track segment through the prediction acquisition module, and matches it with the operation data to determine the corresponding carbon emission optimization method. The system only detects carbon emissions during the rail transit operation stage, and does not cover the complete stage of the rail transit system. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a signal product carbon emission evaluation method, system and medium based on LCA, so as to realize the carbon emission evaluation of the complete stage of the rail transit system.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A method for evaluating carbon emissions of signal products based on LCA, characterized by comprising the following steps:

[0008] Collect and summarize the consumption of resources and energy within the line boundary and the production and transportation list of resources and energy used by signal products;

[0009] Obtain the carbon emissions of the signal product in the building materials production stage, signal engineering construction stage and operation stage according to the consumption of the resources and energy and the production and transportation list of the resources and energy;

[0010] The carbon emissions of the signal product in the downstream dismantling and scrapping stage are obtained based on the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage;

[0011] The energy consumption, resource consumption and carbon emissions generated by transportation of the signal product at each stage are collected and summarized, and combined with the greenhouse effect GWP evaluation, a greenhouse effect evaluation is conducted on the total carbon emissions of the signal product during its life cycle.

[0012] Furthermore, the building materials production stage and the signal engineering construction stage are regarded as the upstream stage of the signal product life cycle; the operation stage is regarded as the midstream stage of the signal product life cycle; and the downstream disassembly and scrapping stage is regarded as the downstream stage of the signal product life cycle.

[0013] Furthermore, the upstream stage includes parking lot infrastructure investment, equipment room investment and vehicle investment, the midstream stage includes transportation and distribution, operation and maintenance, and vehicle operation and traction energy consumption, and the downstream stage includes equipment disassembly, waste transportation, and equipment scrapping output.

[0014] Furthermore, the carbon emissions calculation formula for the building materials production stage is as follows:

[0015]

[0016] In the formula, C jsc is the carbon emissions from the building materials production stage, M i is the consumption of the i-th main building material, F i is the carbon emission factor of the i-th main building material.

[0017] Furthermore, the main building materials include cement, steel, concrete, carbon steel rail beams, lime and polyurethane boards.

[0018] Furthermore, the calculation formula for the carbon emissions during the operation phase is as follows:

[0019] C yy =C yjz +C ylc +C yss

[0020] In the formula, C yy is the carbon emissions during the operation phase, C yjz is the carbon emissions from building operations, C ylc is the carbon emission of vehicle operation, C yss Carbon emissions from the production of vehicle equipment.

[0021] Furthermore, the calculation formula for the building operation carbon emissions is as follows:

[0022] C yjz=e*h*p*q

[0023] In the formula, e is the number of cabinets in the station room, h is the number of line equipment centralized stations, p is the power consumption of a single cabinet per day, and q is the carbon dioxide emissions per unit of power generation.

[0024] Furthermore, the carbon emissions during the signal engineering construction phase include direct carbon emissions during the signal engineering construction phase and indirect carbon emissions generated by electricity consumption during the signal engineering construction phase.

[0025] Furthermore, the direct carbon emissions during the construction phase of the signal engineering project include direct carbon emissions from the combustion of gasoline and diesel by construction machinery.

[0026] Furthermore, the energy consumption generated by the signal product during the operation stage includes station operation energy consumption, vehicle traction energy consumption and vehicle air conditioning energy consumption.

[0027] Furthermore, the influencing factors of the station operation energy consumption include the number of equipment in the station machine room; the influencing factors of the vehicle operation traction energy consumption and vehicle air-conditioning energy consumption include the reduction in the number of allocated vehicles due to different system architectures or system performance improvements.

[0028] Furthermore, the calculation formula of the traction energy consumption is as follows:

[0029] E 牵引 =x*t*u*r

[0030] In the formula, x is the vehicle's traction energy consumption per kilometer, t is the project mileage, u is the carbon emission factor of the company's purchased electricity, and r is the operating period.

[0031] Furthermore, the calculation formula of the vehicle air conditioning energy consumption is as follows:

[0032] E ylcd =(m0+m1-m2)*N*GWP r

[0033] In the formula, E ylcd is the energy consumption of vehicle air conditioning, m0 is the original refrigerant charge of the air conditioning equipment, m1 is the amount of refrigerant added to the air conditioning equipment during use, m2 is the amount of refrigerant remaining in the air conditioning equipment after the vehicle operation period, N is the number of air conditioning equipment, GWP r is the global warming value of the refrigerant.

[0034] Furthermore, the carbon emissions generated by transportation in the downstream dismantling and scrapping stage include the transportation energy consumption generated by transporting the signal products that need to be dismantled.

[0035] Furthermore, functional units are set for the line to obtain carbon emissions per kilometer, and the carbon emissions of the signal product at each stage are quantitatively analyzed.

[0036] According to another aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for evaluating carbon emissions of signal products based on LCA can be implemented.

[0037] According to another aspect of the present invention, a signal product carbon emission evaluation system based on LCA is provided, comprising:

[0038] The signal product upstream and downstream production list analysis data module is used to collect and summarize the consumption of resources and energy used by signal products within the line boundary, as well as the production and transportation list of resources and energy;

[0039] The carbon emission module in the building materials production stage is used to obtain the carbon emission of the signal product in the building materials production stage;

[0040] The carbon emission module of the signal engineering construction phase is used to obtain the carbon emission of signal products during the signal engineering construction phase;

[0041] The carbon emissions module in the operation phase is used to obtain the carbon emissions of signal products in the operation phase;

[0042] A downstream dismantling and scrapping stage module is used to obtain the carbon emissions of the signal product in the downstream dismantling and scrapping stage according to the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage;

[0043] The total inventory analysis module is used to collect and summarize the energy consumption, resource consumption and carbon emissions generated by transportation of the signal product at each stage, and combine the greenhouse effect GWP evaluation to conduct a greenhouse effect evaluation on the total carbon emissions of the signal product during its life cycle.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention uses the LCA model to model the entire life cycle of the signal system based on productization, obtains the carbon emissions of the signal product at each stage of the entire life cycle, and evaluates the carbon emissions of the signal product life cycle, filling the gap in the relevant technical system in the industry.

[0046] 2. The present invention uses the construction, operation and recycling stages as the boundary range, sets functional units, quantifies the total carbon emissions of different rail transit signal systems within the product boundary range, conducts quantitative analysis on the green and energy-saving properties of all signal products, and accurately counts the total carbon emissions throughout the entire life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1This is a flow chart of the LCA-based carbon emission evaluation method for signal products proposed in the present invention;

[0048] Figure 2 A schematic diagram of the evaluation process for evaluating the carbon emissions of a certain signal product based on the LCA model;

[0049] Figure 3 This is a schematic diagram of the boundary range of the evaluation;

[0050] Figure 4 This is a schematic diagram of the structure of the signal product carbon emission evaluation system based on LCA proposed in the present invention. DETAILED DESCRIPTION

[0051] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0052] Abbreviations involved:

[0053] Life cycle analysis: Latent Class Analysis, LCA

[0054] Global Warming Potential: Global Warming Potential, GWP

[0055] Example 1

[0056] This embodiment provides a method for evaluating carbon emissions of signal products based on LCA. Figure 1 As shown, the following steps are included:

[0057] S1. Collect and summarize the signal products used for resource and energy consumption within the line boundary, as well as the production and transportation list of resources and energy.

[0058] The collection signal products are applied to the building materials / energy consumption within the boundaries of the new / renovated lines, the building materials production, energy production and transportation lists.

[0059] S2. Obtain the carbon emissions of the signal product in the building materials production stage, signal engineering construction stage and operation stage according to the resource and energy consumption and the resource and energy production and transportation list.

[0060] The carbon emissions module in the building materials production stage mainly includes the carbon emissions generated by major building materials such as cement, steel, and concrete in the early stage of rail transit construction. The construction of infrastructure mainly includes stations, equipment rooms, and parking lots. According to the principle that the total amount of selected building materials should not be less than 95% of the total weight of building materials consumed in urban rail transit projects, the selection is made in combination with specific lines. Generally, the total carbon emissions of six types of building materials, namely cement, steel, concrete, carbon steel rail beams, lime, and polyurethane boards, are required.

[0061] The formula for calculating carbon emissions during the building materials production stage is as follows:

[0062]

[0063] In the formula, C jsc is the carbon emissions from the building materials production stage, M i is the consumption of the i-th main building material, F i is the carbon emission factor of the i-th main building material.

[0064] The carbon emissions during the construction phase of the signal engineering project include direct carbon emissions and indirect carbon emissions caused by the electricity consumption during the construction phase of the signal engineering project. The direct carbon emissions during the construction phase of the signal engineering project are mainly due to the direct carbon emissions from the burning of gasoline, diesel, etc. by construction machinery.

[0065] The calculation formula for carbon emissions during the operation phase is as follows:

[0066] C yy =C yjz +C ylc +C yss

[0067] In the formula, C yy is the total carbon emissions during the operation phase, C yjz is the carbon emissions from building operations, C ylc is the carbon emission of vehicle operation, C yss Carbon emissions from the production of vehicle equipment.

[0068] The calculation formula for building operation carbon emissions is as follows:

[0069] C yjz =e*h*p*q

[0070] In the formula, e is the number of cabinets in the station room, h is the number of line equipment centralized stations, p is the power consumption of a single cabinet per day, and q is the carbon dioxide emissions per unit of power generation.

[0071] Energy consumption during the operation phase includes station operation energy consumption, vehicle traction energy consumption and vehicle air conditioning energy consumption.

[0072] The quantitative differences in carbon emission accounting of different signal system products during the operation stage can be divided into two parts. One part is the direct energy consumption reduction caused by the reduction of equipment in the station machine room. The second part is the indirect carbon emission reduction of traction energy consumption and the direct carbon emission reduction caused by vehicle air-conditioning energy consumption due to different system architectures and the improvement of system performance, which reduces the number of vehicles to a certain extent.

[0073] The calculation formula of traction energy consumption is as follows:

[0074] E 牵引 =x*t*u*r

[0075] In the formula, x is the vehicle's traction energy consumption per kilometer, t is the project's mileage, u is the carbon emission factor of the company's purchased electricity, and r is the operating cycle;

[0076] The calculation formula for vehicle air conditioning energy consumption is as follows:

[0077] E ylcd =(m0+m1-m2)*N*GWP r

[0078] In the formula, E ylcd is the energy consumption of vehicle air conditioning, m0 is the original refrigerant charge of the air conditioning equipment (kg / unit), m1 is the amount of refrigerant added to the air conditioning equipment during use (kg / unit), m2 is the remaining refrigerant in the air conditioning equipment after the vehicle operation period ends (kg / unit), N is the number of air conditioning equipment (units), GWP r is the global warming value of the refrigerant.

[0079] S3. The carbon emissions of the signal product in the downstream dismantling and scrapping stage are obtained according to the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage.

[0080] The carbon emissions generated in the downstream dismantling and scrapping stage are mainly the transportation energy consumption generated by transporting the equipment that needs to be dismantled. The carbon emissions in the downstream dismantling and scrapping stage, the building materials production stage, the signal engineering construction stage and the operation stage together constitute the overall carbon emissions.

[0081] S4. Collect and summarize the energy consumption, resource consumption and carbon emissions generated by transportation of signal products at each stage, and combine the greenhouse effect GWP evaluation to conduct a greenhouse effect evaluation on the total carbon emissions of the signal product life cycle.

[0082] This embodiment takes the building materials production stage and the signal engineering construction stage as the upstream stage of the signal product life cycle; the operation stage as the midstream stage of the signal product life cycle; and the downstream disassembly and scrapping stage as the downstream stage of the signal product life cycle.

[0083] The upstream stage includes parking lot infrastructure investment, equipment room investment and vehicle investment; the midstream stage includes transportation and distribution, operation and maintenance, and vehicle traction energy consumption; the downstream stage includes equipment disassembly, waste transportation and equipment scrapping output.

[0084] Combined with the GWP assessment of greenhouse effects, the greenhouse effect of CO2 is evaluated within a certain period of time (the life cycle of the main equipment of the rail transit system is 20 years) based on the GWP value of carbon oxide being 1.0.

[0085] This embodiment can also combine the full length of a specific line, set functional units for the line, obtain carbon emissions per kilometer, quantify and analyze the carbon emissions of the signal product at each stage, and obtain the values ​​of carbon emissions per kilometer in the building materials production, operation and construction stages for different signal products, provide identification of key stages that affect the total carbon emissions, and give alarm prompts to assist decision-making.

[0086] like Figure 2 As shown in the figure, when evaluating the carbon emissions of a signal product based on the LCA model, the evaluation process is as follows:

[0087] Taking 1km of urban rail line as the functional unit, the construction, operation and recycling stages are determined as the boundary scope;

[0088] Carry out inventory analysis based on the boundary range, combine with the carbon dioxide emission factor, and summarize the energy consumption, resource consumption and carbon emissions generated by transportation of signal products;

[0089] Integrate energy consumption, resource consumption and carbon emissions generated during the transportation phase to obtain the total carbon emissions;

[0090] Combined with the greenhouse effect GWP assessment, the greenhouse effect of the total carbon emissions is evaluated.

[0091] Boundary range Figure 3 As shown, the upstream stage of the signal product life cycle is the construction stage, including parking lot infrastructure investment, equipment room investment and vehicle investment; the midstream stage of the signal product life cycle is the operation stage, including transportation and distribution, operation and maintenance, and vehicle operation traction power supply; the downstream stage of the signal product life cycle is the recycling stage, including equipment disassembly, waste transportation and equipment scrapping.

[0092] Example 2

[0093] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the operation of the signal system product carbon emission evaluation system can be realized.

[0094] The rest is the same as in Example 1.

[0095] Example 3

[0096] This embodiment provides a signal system product carbon emission evaluation system, such as Figure 4 As shown, including:

[0097] The signal product upstream and downstream production list analysis data module is used to collect and summarize the consumption of resources and energy used by signal products within the line boundary, as well as the production and transportation list of resources and energy;

[0098] The carbon emission module in the building materials production stage is used to obtain the carbon emission of the signal product in the building materials production stage;

[0099] The carbon emission module of the signal engineering construction phase is used to obtain the carbon emission of signal products during the signal engineering construction phase;

[0100] The carbon emissions module in the operation phase is used to obtain the carbon emissions of signal products in the operation phase;

[0101] A downstream dismantling and scrapping stage module is used to obtain the carbon emissions of the signal product in the downstream dismantling and scrapping stage according to the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage;

[0102] The total inventory analysis module is used to collect and summarize the energy consumption, resource consumption and carbon emissions generated by transportation of the signal product at each stage, and combine the greenhouse effect GWP evaluation to conduct a greenhouse effect evaluation on the total carbon emissions of the signal product during its life cycle.

[0103] The rest is the same as in Example 1.

[0104] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A method for evaluating carbon emissions of signal products based on LCA, characterized in that: The following steps are involved: Collect and summarize the consumption of resources and energy within the line boundary and the production and transportation list of resources and energy used by signal products; Obtain the carbon emissions of the signal product in the building materials production stage, signal engineering construction stage and operation stage according to the consumption of the resources and energy and the production and transportation list of the resources and energy; The carbon emissions of the signal product in the downstream dismantling and scrapping stage are obtained based on the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage; The energy consumption, resource consumption and carbon emissions generated by transportation of the signal product at each stage are collected and summarized, and combined with the greenhouse effect GWP evaluation, a greenhouse effect evaluation is conducted on the total carbon emissions of the signal product during its life cycle.

2. The method for evaluating carbon emissions of signal products based on LCA according to claim 1 is characterized in that: The building materials production stage and the signal engineering construction stage are regarded as the upstream stage of the signal product life cycle; the operation stage is regarded as the midstream stage of the signal product life cycle; and the downstream disassembly and scrapping stage is regarded as the downstream stage of the signal product life cycle.

3. The method for evaluating carbon emissions of signal products based on LCA according to claim 2 is characterized in that: The upstream stage includes parking lot infrastructure investment, equipment room investment and vehicle investment; the midstream stage includes transportation and distribution, operation and maintenance, and vehicle operation and traction energy consumption; the downstream stage includes equipment disassembly, waste transportation, and equipment scrapping output.

4. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: The calculation formula for carbon emissions in the building materials production stage is as follows: In the formula, C jsc is the carbon emissions from the building materials production stage, M i is the consumption of the i-th main building material, F i is the carbon emission factor of the i-th main building material.

5. The method for evaluating carbon emissions of signal products based on LCA according to claim 4 is characterized in that: The main building materials include cement, steel, concrete, carbon steel rail beams, lime and polyurethane boards.

6. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: The calculation formula for carbon emissions during the operation phase is as follows: C yy =C yjz +C ylc +C yss In the formula, C yy is the carbon emissions during the operation phase, C yjz is the carbon emissions from building operations, C ylc is the carbon emission of vehicle operation, C yss Carbon emissions from the production of vehicle equipment.

7. The method for evaluating carbon emissions of signal products based on LCA according to claim 6 is characterized in that: The calculation formula for the building operation carbon emissions is as follows: C yjz =e*h*p*q In the formula, e is the number of cabinets in the station room, h is the number of line equipment centralized stations, p is the power consumption of a single cabinet per day, and q is the carbon dioxide emissions per unit of power generation.

8. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: The carbon emissions during the signal engineering construction phase include direct carbon emissions during the signal engineering construction phase and indirect carbon emissions generated by electricity consumption during the signal engineering construction phase.

9. The method for evaluating carbon emissions of signal products based on LCA according to claim 8, characterized in that: The direct carbon emissions during the construction phase of the signal project include direct carbon emissions from the combustion of gasoline and diesel by construction machinery.

10. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: The energy consumption generated by the signal products during the operation stage includes station operation energy consumption, vehicle traction energy consumption and vehicle air-conditioning energy consumption.

11. The method for evaluating carbon emissions of signal products based on LCA according to claim 10, characterized in that: The influencing factors of the station operation energy consumption include the number of equipment in the station machine room; the influencing factors of the vehicle operation traction energy consumption and vehicle air-conditioning energy consumption include the reduction in the number of vehicles due to different system architectures or system performance improvements.

12. The method for evaluating carbon emissions of signal products based on LCA according to claim 11, characterized in that: The calculation formula of the traction energy consumption is as follows: E 牵引 =x*t*u*r In the formula, x is the vehicle's traction energy consumption per kilometer, t is the project mileage, u is the carbon emission factor of the company's purchased electricity, and r is the operating period.

13. The method for evaluating carbon emissions of signal products based on LCA according to claim 11, characterized in that: The calculation formula of the vehicle air conditioning energy consumption is as follows: E ylcd =(m0+m1-m2)*N*GWP r In the formula, E ylcd is the energy consumption of vehicle air conditioning, m0 is the original refrigerant charge of the air conditioning equipment, m1 is the amount of refrigerant added to the air conditioning equipment during use, m2 is the amount of refrigerant remaining in the air conditioning equipment after the vehicle operation period, N is the number of air conditioning equipment, GWP r is the global warming value of the refrigerant.

14. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: The carbon emissions generated by transportation in the downstream dismantling and scrapping stage include the transportation energy consumption generated by transporting signal products that need to be dismantled.

15. The method for evaluating carbon emissions of signal products based on LCA according to claim 1, characterized in that: Functional units are set for the line to obtain carbon emissions per kilometer, and the carbon emissions of the signal product at each stage are quantitatively analyzed.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for evaluating carbon emissions of signal products based on LCA as described in any one of claims 1 to 15 can be implemented.

17. A signal product carbon emission evaluation system based on LCA, characterized in that: include: The signal product upstream and downstream production list analysis data module is used to collect and summarize the consumption of resources and energy used by signal products within the line boundary, as well as the production and transportation list of resources and energy; The carbon emission module in the building materials production stage is used to obtain the carbon emission of the signal product in the building materials production stage; The carbon emission module of the signal engineering construction phase is used to obtain the carbon emission of signal products during the signal engineering construction phase; The carbon emissions module in the operation phase is used to obtain the carbon emissions of signal products in the operation phase; A downstream dismantling and scrapping stage module is used to obtain the carbon emissions of the signal product in the downstream dismantling and scrapping stage according to the carbon emissions in the building materials production stage, the signal engineering construction stage and the operation stage; The total inventory analysis module is used to collect and summarize the energy consumption, resource consumption and carbon emissions generated by transportation of the signal product at each stage, and combine the greenhouse effect GWP evaluation to conduct a greenhouse effect evaluation on the total carbon emissions of the signal product during its life cycle.

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