Carbon footprint metering method for multiple types of ocean engineering equipment

Abstract

The invention discloses a carbon footprint metering method for multi-type ocean engineering equipment. The carbon footprint metering method comprises the following steps: defining a full-process metering boundary from raw material acquisition to ocean engineering equipment delivery; the method comprises the following steps: constructing a modular multi-level quantitative model adaptive to different equipment types, and systematically identifying key greenhouse gas emission sources in each period stage; systematically collecting and inputting activity level data generated by target equipment in design, purchase and construction plans based on the multi-level quantitative model; and based on the activity level data, systematized calculation and summarization of greenhouse gas emission are carried out. According to the method, accurate quantification of the equipment delivery carbon footprint obtained from the raw materials can be achieved, carbon emission prediction can be carried out in the equipment design stage, and the problems that in the prior art, due to the fact that maritime work equipment is diversified in type and complex in system, a metering method is poor in universality, and metering results are poor in comparability can be solved.

Description

Technical Field

[0001] This invention relates to the field of carbon footprint measurement technology for engineering equipment, and more particularly to a carbon footprint measurement method for various types of marine engineering equipment. Background Technology

[0002] With increasing global attention to climate change, carbon footprint measurement has become a key tool for assessing the environmental performance of products. Marine engineering equipment such as drilling platforms, offshore wind turbine installation vessels, and floating production storage and offloading (FPSO) units face significant challenges in carbon footprint measurement due to their complex structures, numerous systems, and long construction cycles.

[0003] Currently, the main problems in measuring the carbon footprint of marine engineering equipment are as follows: First, there is a lack of unified and universally applicable measurement standards and methods. Existing methods are mostly estimates based on specific ship types or macroscopic data, making it difficult to accurately adapt to marine engineering equipment with different structures, functions, and operating modes. This results in poor comparability of measurement results and fails to provide a basis for precise emission reduction. Second, the measurement granularity is coarse. Many methods remain at the overall equipment level, failing to penetrate to the micro-level such as "system units" and "construction processes," making it difficult to identify carbon emission "hotspots" and resulting in a lack of targeted management decisions. Finally, data acquisition is difficult and costly. A measurement method that can balance universality and accuracy and provide effective carbon footprint data during the equipment design or planning stage is still lacking. This restricts the ability of marine engineering equipment manufacturers to conduct low-carbon design, green procurement, and process optimization.

[0004] Therefore, there is an urgent need in this field for a standardized, structured method for measuring the carbon footprint of various types of marine engineering equipment to overcome the shortcomings of existing technologies.

[0005] Therefore, how to design a standardized, structured method for measuring the carbon footprint of various types of marine engineering equipment is a topic that the inventors have devoted themselves to researching. Summary of the Invention

[0006] The purpose of this invention is to provide a carbon footprint measurement method for various types of marine engineering equipment. This method can accurately quantify the carbon footprint from raw material acquisition to equipment delivery, and can enable carbon emission prediction during the equipment design stage. It can solve the problems of poor universality and weak comparability of measurement results caused by the diversity of marine engineering equipment and the complexity of systems in the prior art.

[0007] To achieve the above objectives, the technical solution of the present invention is: a carbon footprint measurement method for various types of marine engineering equipment, wherein the carbon footprint measurement method includes the following steps:

[0008] (1) Define the measurement boundaries of the entire process from raw material acquisition to the delivery of marine engineering equipment;

[0009] (2) Construct a modular, multi-level quantitative model that can be adapted to different equipment types, and systematically identify the key greenhouse gas emission sources in each cycle stage;

[0010] (3) Based on the multi-level quantitative model, systematically collect and input the activity level data of the target equipment generated in the design, procurement and construction plans;

[0011] (4) Based on the activity level data, perform systematic calculation and summary of greenhouse gas emissions.

[0012] Preferably, the multi-level quantization model in step (2) includes:

[0013] Equipment system unit metering is used to measure the carbon emissions of the main functional modules of the hull structure, propulsion system, positioning system, and deck machinery.

[0014] Construction phase process measurement is used to measure carbon emissions from key construction stages such as steel pretreatment, segmented manufacturing, overall assembly, system installation and commissioning;

[0015] Materials and energy resources measurement is used to measure the consumption of major raw materials and the carbon emissions of various energy media such as electricity and fuel.

[0016] Preferably, the measurement of the equipment system unit is quantified by carbon emissions per unit structural weight, carbon emissions per unit power, or carbon emissions per unit functional unit.

[0017] Preferably, the process measurement during the construction phase is quantified using carbon emissions per unit processing area, carbon emissions per unit installation man-hour, or carbon emissions per unit commissioning time.

[0018] Preferably, the material and energy resource measurement is used to measure the implicit carbon emissions and direct carbon emissions by combining the weight of the main raw materials and the energy consumption in the material list.

[0019] Preferably, the model includes at least a raw material and energy acquisition stage and a manufacturing process stage, wherein:

[0020] The raw materials and energy acquisition stage includes carbon emissions from the production and transportation of main materials and fuels, as well as electrical energy.

[0021] The manufacturing process includes carbon emissions generated during the following stages: steel arrival at the factory, steel processing, segmented assembly, segmented intermediate assembly, large assembly, outfitting component processing, outfitting, painting, final assembly, mooring tests, and sea trials. These emissions cover carbon emissions from energy use in the production system, carbon emissions from energy use in the auxiliary production system, carbon emissions from outsourced processing, carbon dioxide recovery and utilization, and carbon removal.

[0022] Preferably, the activity level data in step (3) includes:

[0023] Data extracted from design data: Analyze the 3D digital model of the equipment and production design drawings to obtain the physical attribute data of each system unit;

[0024] Data extracted from procurement data: Integrate the material procurement list to obtain the precise procurement weight or volume of the main raw materials;

[0025] Data extracted from the construction plan: Based on the construction process specifications and production plan, obtain the workload of key processes.

[0026] The activity level data are mapped to the equipment system unit measurement, the construction phase process measurement, and the material and energy resource measurement in the multi-level quantitative model according to their attributes.

[0027] Preferably, the systematic calculation and summarization of greenhouse gas emissions in step (4) includes the following steps:

[0028] (a) Selection of emission factors: Priority shall be given to specific emission factors based on actual measurements or provided by suppliers, or to the average emission factor of the Chinese regional power grid published by an authoritative body, or the default value of the national greenhouse gas inventory or the default emission factor in a recognized database;

[0029] (b) Perform step-by-step calculations:

[0030] (c) Calculation of raw material acquisition stage: The carbon emissions of the raw material acquisition stage are calculated by multiplying the consumption of various raw materials and energy consumption of the main materials, auxiliary materials, fuels and electricity produced from natural resources with their corresponding emission factors.

[0031] (d) Production stage calculation: The production stage processes include steel pretreatment, cutting and processing, pipe processing, outfitting, painting, assembly, mounting, mooring tests and sea trials. The activity level data of each production stage process are multiplied by the corresponding emission factor to obtain the carbon emissions of each process.

[0032] (e) System boundary aggregation: The above carbon emissions are aggregated to obtain the complete carbon footprint data of the marine engineering equipment at the entire process metering boundary from raw material acquisition to marine engineering equipment delivery.

[0033] Preferably, the carbon footprint data is further used to generate carbon emission composition analysis reports at the equipment level, system unit level, and process level to identify carbon hotspots and provide a basis for emission reduction optimization.

[0034] Preferably, the carbon footprint of the marine engineering equipment-related products is calculated as follows:

[0035] In the formula:

[0036] E 碳足迹 Carbon footprint of marine engineering equipment-related products, in tons of carbon dioxide (tCO2).

[0037] E 原材料 The carbon emissions generated from the raw materials consumed in the manufacturing of marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2).

[0038] E 配套设备 Carbon emissions generated by supporting equipment manufactured for marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2).

[0039] E 物料运输 The carbon emissions generated during the transportation of raw materials, supporting equipment, and energy consumed in production and manufacturing from the supplier's location to the ship assembly enterprise, expressed in tons of carbon dioxide (tCO2).

[0040] E 制造过程 This refers to the carbon emissions generated during the production and manufacturing process of ship assembly enterprises, expressed in tons of carbon dioxide (tCO2).

[0041] After adopting the above scheme, the beneficial effects of the carbon footprint measurement method for various types of marine engineering equipment of the present invention are:

[0042] 1. This invention constructs a universal and scalable quantitative framework that can adapt to marine engineering equipment with different structures, functions and operating modes, and systematically identifies key greenhouse gas emission sources at each stage of the life cycle. By collecting or referencing the activity level data and emission factors of the target equipment based on this framework, it is possible to achieve standardized measurement of its carbon footprint.

[0043] 2. This invention provides a unified and standardized universal measurement method that does not require customized underlying models for different equipment types. It has wide applicability and good economic efficiency, and can provide comparable carbon footprint data for various marine engineering equipment. It supports enterprises in carbon emission benchmarking management, optimizing low-carbon strategies, and provides a technical foundation for greenhouse gas inventory and emission reduction management at the industry level.

[0044] 3. By establishing a standardized metrology system for marine engineering equipment, this invention achieves precise quantification of the carbon footprint throughout the entire process from raw material acquisition to equipment delivery. It can penetrate to the system unit level and process level to support carbon hotspot identification and low-carbon decision-making, while also meeting the need for carbon emission prediction during the equipment design stage. Attached Figure Description

[0045] Figure 1This is a schematic diagram of the full-process measurement boundary of an embodiment of the carbon footprint measurement method for various types of marine engineering equipment according to the present invention. Detailed Implementation

[0046] This invention proposes a method for measuring the carbon footprint of marine engineering equipment manufacturing processes, the method comprising:

[0047] I. Define the measurement boundaries for the entire process from raw material acquisition to the delivery of marine engineering equipment. (Combined with...) Figure 1 As shown.

[0048] 1. Raw Material and Energy Acquisition Stage. This stage begins when natural materials are mined and ends when raw materials, equipment, and energy arrive at the production plant. It includes, but is not limited to, the following processes:

[0049] (a) The mining and production of raw materials required for product manufacturing (steel, pipes, paint, oil, welding materials, etc.);

[0050] (b) Production of auxiliary materials required for product manufacturing (propulsion and power supply systems, deck machinery and equipment, etc.);

[0051] (c) The extraction and production of energy required for product manufacturing (fuel, purchased electricity (heat), water, etc.);

[0052] (d) Transporting or transferring raw materials and energy to the production site.

[0053] 2. Manufacturing Process Stage. The manufacturing process stage includes the entire process from the arrival of materials needed for marine engineering equipment production to the final product. It mainly includes:

[0054] (a) Steel arriving at the factory, including steel lifting activities using cranes, electric flatbed trucks, forklifts, tractors, flatbed trailers, etc.

[0055] (b) Steel processing, including shot blasting and rust removal and spraying of protective primer on steel surfaces, steel plate cutting, bending, folding, beveling and welding, pipe cutting, bending, welding and post-pumping treatment.

[0056] (c) Segmented assembly, which includes the process of pre-assembling small modular units from the segments of marine engineering equipment (such as plates, profiles, ribs, frames, etc.) by welding or other means.

[0057] (d) Segment assembly and large assembly, including the process of assembling small modular units in marine engineering equipment segments into medium and large modular units by means of welding and other methods.

[0058] (e) Outfitting processing, including the processing, pre-assembly and commissioning of functional equipment, systems and their supporting components for marine engineering equipment.

[0059] (f) Outfitting, including outfitting pallet assembly, iron outfitting, pipe outfitting and electric outfitting processes;

[0060] (g) Coating, including processes such as sanding, sandblasting and painting;

[0061] (h) Assembly and installation, including assembly painting and assembly outfitting, slipway / dock installation, installation painting and installation outfitting, etc.;

[0062] (i) Mooring trials, including finishing paint, launching, finishing MC / commissioning, loading, etc.

[0063] (j) Sea trials, including comprehensive sea trials conducted in actual sea areas or designated waters after the completion of marine engineering equipment;

[0064] (k) Auxiliary production, including a series of supporting equipment, facilities and process activities to ensure the efficient, safe and orderly construction of marine engineering equipment (such as office buildings, laboratories, compressed air systems, lighting systems, heating and cooling systems, transportation, sewage treatment, etc.).

[0065] (l) Outsourcing, including the process in marine engineering equipment manufacturing where, based on cost, technology or capacity constraints, non-core or highly specialized process links, component production, segmented construction and other tasks are entrusted to external partners (outsourcing manufacturers) through contracts.

[0066] (m) Carbon dioxide recovery and utilization, including the process of capturing carbon dioxide emitted directly or indirectly during the production process by physical, chemical or biological methods and converting it into usable resources (such as fuels, chemicals) or safely storing it.

[0067] (n) Carbon removal, including the process of removing carbon dioxide from the atmosphere through natural or human activities.

[0068] 2. Construct a modular, multi-level quantitative model that can be adapted to different equipment types, and systematically identify key greenhouse gas emission sources in each cycle stage (data quality management).

[0069] The carbon footprint assessment of marine engineering equipment requires the collection of on-site data and background data.

[0070] Field data comprises activity data from each process or unit during the production phase of marine engineering equipment products. It is lifecycle inventory data obtained through actual measurement, statistics, and other methods, including raw material and energy consumption, product output, waste discharge, and transportation volume (including transportation mode and distance) during the product production phase. All field data are preliminary data.

[0071] Background data cannot be obtained from existing product systems and usually comes from existing localized or international LCA databases, product carbon footprint (CFP) or environmental product declaration (EPD) reports certified by third-party authoritative organizations, and publicly published high-quality academic literature.

[0072] Quantifiable background data is primary data, such as lifecycle inventory data calculated based on on-site data provided by suppliers or service providers; background data that cannot be quantified is secondary data, such as upstream emission factors, transportation emission factors, and waste disposal emission factors of purchased raw materials and fuels.

[0073] Secondary data should only be used for inputs and outputs, or for processes of lower importance, when collecting primary data is not feasible. When citing secondary data, its applicability and reliability should be demonstrated, and the data source and selection rationale should be cited.

[0074]

[0075] 3. Based on a multi-level quantitative model, systematically collect and input activity level data (allocation principle) generated by the target equipment in the design, procurement and construction plans.

[0076] In the production process of marine engineering equipment, there are situations where a single unit process simultaneously produces two or more products, but the input raw materials and energy are not separated. The main principles of allocation are as follows:

[0077] 1. Principle of Multi-Product Allocation

[0078] For unit processes involving multiple products, the allocation principle is handled according to the following steps:

[0079] (a) Prioritize refining the unit process to avoid allocation;

[0080] (b) When allocation is unavoidable, allocation shall be carried out in the following order:

[0081] (1) Allocation can be based on relevant potential physical relationships.

[0082] (2) When the price difference between at least two different outputs is greater than 10, economic value allocation is used, and economic value is calculated based on the following values:

[0083]  The 5-year global average price of all other commodities;

[0084]  The factory's unique 5-year average income;

[0085] 2. Principles of Energy Consumption Allocation

[0086] In a factory, multiple production lines share a single metering instrument (such as an electricity meter), or a unit process handles products from different production lines, and the energy consumed can be allocated according to mass (or other physical properties).

[0087] IV. Based on activity level data, conduct systematic calculation and summarization of greenhouse gas emissions (carbon footprint measurement).

[0088] In some implementations, measurement is performed using the following calculation formula:

[0089] (1) Calculation of carbon footprint of marine engineering equipment related products:

[0090] In the formula:

[0091] E 碳足迹 Carbon footprint of marine engineering equipment-related products, in tons of carbon dioxide (tCO2).

[0092] E 原材料 The carbon emissions generated from the raw materials consumed in the manufacturing of marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2).

[0093] E 配套设备 Carbon emissions generated by supporting equipment manufactured for marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2).

[0094] E 物料运输 The carbon emissions generated during the transportation of raw materials, supporting equipment, and energy consumed in production and manufacturing from the supplier's location to the ship assembly enterprise, expressed in tons of carbon dioxide (tCO2).

[0095] E 制造过程 This refers to the carbon emissions generated during the production and manufacturing process of ship assembly enterprises, expressed in tons of carbon dioxide (tCO2).

[0096] (2) Calculation of carbon emissions from raw materials:

[0097] In the formula:

[0098]

[0099] i represents the type of raw material, such as steel, paint, welding materials, cables, steel pipes, copper pipes, zinc, and aluminum.

[0100] AD i The consumption of raw material i is expressed in tons (t).

[0101] EF i is the carbon emission factor of raw material i, expressed in tons of carbon dioxide per ton (tCO2 / t).

[0102] Note: Carbon emission factors for raw materials should preferably be based on data provided by the supplier. If this is not possible, the latest data released by the relevant authorities or relevant calculation methods should be used for calculation.

[0103] (3) For the carbon emissions of supporting equipment, priority should be given to using product carbon footprint data provided by the supplier and certified by a third-party organization. If such data cannot be provided, the calculation formula shall be used:

[0104] In the formula:

[0105]

[0106] i refers to supporting equipment, such as main engine, generator, marine shaft, anchor winch, propeller, etc.

[0107] j represents the constituent materials of the supporting equipment, such as steel, copper, aluminum, plastic, rubber, etc.

[0108] k represents the carbon emission sources from the raw material acquisition and manufacturing processes of the supporting equipment, such as electricity, gasoline, diesel, fuel oil, natural gas, liquefied natural gas, steam, acetylene, propane, and direct emissions of carbon dioxide.

[0109] M ij The consumption of material j, which is a component of equipment i, is expressed in tons (t).

[0110] E j The carbon emission factor of component material j of supporting equipment i is expressed in tons of carbon dioxide per ton (tCO2 / t).

[0111] AD ik The amount of carbon emission source k consumed during the raw material acquisition and manufacturing process of the supporting equipment i, in tons (t).

[0112] EF k The carbon emission factor of carbon emission source k during the raw material acquisition and manufacturing process of supporting equipment i is expressed in tons of carbon dioxide per ton (tCO2 / t).

[0113] Note: Carbon emission factors for the components of the supporting equipment should preferably be based on data provided by the supplier. If such data is unavailable, the latest data released by the relevant authorities or relevant calculation methods should be used for calculation.

[0114] (4) If the upstream supplier cannot provide data on carbon emissions related to the raw material acquisition and manufacturing process of the supporting equipment, the calculation formula shall be used:

[0115] In the formula:

[0116]

[0117] i refers to supporting equipment, such as main engine, generator, marine shaft, anchor winch, propeller, etc.

[0118] j represents the constituent materials of the supporting equipment, such as steel, copper, aluminum, plastic, rubber, etc.

[0119] M ij The consumption of material j, which is a component of equipment i, is expressed in tons (t).

[0120] E j The carbon emission factor of component material j of supporting equipment i is expressed in tons of carbon dioxide per ton (tCO2 / t).

[0121] β i The carbon footprint correction factor for the supporting equipment i is the ratio of the product carbon footprint of the supporting equipment to the carbon emissions measured based on the constituent materials, and its value is greater than 1.

[0122] Note: Carbon emission factors for the components of the supporting equipment should preferably be based on data provided by the supplier. If this is not possible, the latest data released by the competent authority or relevant calculation methods should be used for calculation. The carbon footprint correction factor for the supporting equipment is used to correct for carbon emission biases based on the measurement of the components; the correction factor value varies for different types of equipment.

[0123] (5) Calculation of carbon emissions from material transportation:

[0124] In the formula:

[0125]

[0126] j represents the material type;

[0127] i represents the type of fossil fuel;

[0128] AD ij The activity level data for energy i of material j;

[0129] EF i is the carbon emission factor for energy i.

[0130] 6) If energy activity level data cannot be directly obtained for some or all materials during transportation, a calculation formula can be used:

[0131] In the formula:

[0132]

[0133] j represents the material type;

[0134] i represents the mode of transport;

[0135] W ij The weight of material j transported by mode i is expressed in tons (t).

[0136] Lij For material j, the transportation distance using transportation method i is expressed in kilometers (km).

[0137] EF i tCO2 is the carbon emission factor for transportation mode i, expressed in tons of carbon dioxide per ton per kilometer (tCO2 / (t×km)).

[0138] Note: Actual recorded data is preferred for transport distances. If not available, the shortest feasible distance between the two locations can be used for road vehicle transport distances, the track distance between the two locations for rail transport distances, the shortest feasible route distance for waterway transport distances, and the distance between the two locations plus 95km for air transport distances.

[0139] 7) Carbon emission calculation during manufacturing process:

[0140] In the formula:

[0141] E 制造过程 The carbon emissions generated during the manufacturing process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0142] E 生产系统用能 The carbon emissions generated by the energy used in the production system during the manufacturing process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0143] E 辅助生产系统用能 The carbon emissions generated by the auxiliary production system during the manufacturing process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0144] E 委外加工 The carbon emissions generated during the outsourcing of manufacturing processes for the target ship are expressed in tons of carbon dioxide (tCO2).

[0145] E 回收利用 The carbon emissions generated during the manufacturing process of the target ship are captured, treated, and reused. The unit is tons of carbon dioxide (tCO2).

[0146] E 碳清除 The amount of carbon removed during the manufacturing process of the target ship is expressed in tons of carbon dioxide (tCO2).

[0147] (8) Calculation of carbon emissions from energy consumption in the production system:

[0148] In the formula:

[0149] E 生产系统用能 The carbon emissions generated by the energy used in the production system during the manufacturing process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0150] E 钢材到厂 The carbon emissions generated during the steel delivery process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0151] E 钢料加工 The carbon emissions generated by the steel processing of the target ship are expressed in tons of carbon dioxide (tCO2).

[0152] E 分段小组立 The carbon emissions generated by the section assembly process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0153] E 分段中组立大组立 The carbon emissions generated during the assembly process of the target ship section are expressed in tons of carbon dioxide (tCO2).

[0154] E 舾装件加工 The carbon emissions generated by the outfitting process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0155] E 舾装 The carbon emissions generated during the outfitting process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0156] E 涂装 The carbon emissions generated by the painting process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0157] E 总组搭载 The carbon emissions generated during the assembly and loading process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0158] E 系泊试验 The carbon emissions generated during the target ship's mooring test process are expressed in tons of carbon dioxide (tCO2).

[0159] E 试航 The carbon emissions generated during the sea trial process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0160] (9) Calculation of carbon emissions from steel delivered to the plant:

[0161] In the formula:

[0162]

[0163] i represents energy-consuming equipment, such as cranes, electric flatbed trucks, forklifts, tractors, flatbed trailers, etc.

[0164] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, including electricity, gasoline, and diesel.

[0165] AD ij The carbon emission consumption of energy-consuming equipment i from source j is expressed in ten thousand kilowatt-hours (104 kWh or tons (t);

[0166] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh or tons of carbon dioxide per ton (tCO2 / t).

[0167] (10) Calculation of carbon emissions from steel processing:

[0168] In the formula:

[0169]

[0170] i represents energy-consuming equipment, such as cranes, steel plate leveling machines, CNC scribing machines, pretreatment lines, pretreatment line RTOs, hydraulic presses, hydraulic presses, marine three-roll plate bending machines, profile cold bending machines, rib cold bending machines, plasma cutting machines, flame cutting machines, laser cutting machines, steel plate transmission lines, forklifts, tractors, and flatbed trailers.

[0171] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as electricity, diesel, and natural gas.

[0172] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0173] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0174] (11) Segmented group carbon emission calculation:

[0175] In the formula:

[0176]

[0177] i represents energy-consuming equipment, such as bridge cranes, semi-gantry cranes, manual welding machines, CO2 welding machines, automatic submerged arc welding machines, submerged arc welding machines, component assembly lines, automatic welding production lines for T-profiles, and thyristor carbon arc gouging machines, etc.

[0178] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as direct emissions from electricity, diesel, natural gas, propane, acetylene, and carbon dioxide.

[0179] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0180] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0181] (12) Calculation of carbon emissions from segmented assembly and large assembly:

[0182] In the formula:

[0183]

[0184] i refers to energy-consuming equipment, including but not limited to bridge cranes, semi-gantry cranes, manual welding machines, CO2 welding machines, automatic submerged arc welding machines, submerged arc welding machines, flat assembly lines, ABCD assembly lines, electromagnetic bridge cranes, gantry cranes, flux dryers, axial flow fans, etc.

[0185] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as direct emissions from electricity, diesel, natural gas, acetylene, propane, and carbon dioxide.

[0186] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0187] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0188] (13) Calculation of carbon emissions from outfitting component processing:

[0189] In the formula:

[0190]

[0191] i refers to energy-consuming equipment, including but not limited to manual welding machines, CO2 welding machines, automatic submerged arc welding machines, and submerged arc welding machines;

[0192] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as direct emissions from electricity, diesel, natural gas, acetylene, propane, and carbon dioxide.

[0193] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0194] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0195] (14) Calculation of carbon emissions from outfitting:

[0196] In the formula:

[0197]

[0198] i refers to energy-consuming equipment, including but not limited to manual welding machines, CO2 welding machines, automatic submerged arc welding machines, submerged arc welding machines, silicon controlled carbon arc gouging machines, gantry cranes, air coolers, ventilators, bridge cranes, tower cranes, canopies, etc.

[0199] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as direct emissions from electricity, diesel, natural gas, acetylene, propane, and carbon dioxide.

[0200] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0201] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0202] 15) Carbon emission calculation for coating:

[0203] In the formula:

[0204]

[0205] i refers to energy-consuming equipment, including but not limited to dehumidifiers, sandblasting systems, combined sandblasting machines, paint sprayers, dust collectors, recycling and cleaning conveying systems, sandblasting room vacuum suction systems, mobile vacuum cleaners, mobile vacuum suction machines, VOCs treatment devices, etc.

[0206] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, including electricity, compressed air, and VOCs;

[0207] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in units of 10,000 kWh (10 4 kWh), 10,000 cubic meters (10 4 m 3 ) or tons (t);

[0208] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh), tons of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ) or tons of carbon dioxide per ton (tCO2 / t).

[0209] (16) Calculation of carbon emissions from the entire group:

[0210] In the formula:

[0211]

[0212] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as electricity, diesel, natural gas, and direct carbon dioxide emissions.

[0213] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0214] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0215] Note: Carbon emission consumption for the overall assembly process is measured separately.

[0216] (17) Calculation of carbon emissions from mooring tests:

[0217] In the formula:

[0218]

[0219] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, such as electricity, diesel, fuel oil, natural gas, and liquefied natural gas.

[0220] AD ij The carbon emission source j in energy-consuming equipment i is consumed, in tons (t) or ten thousand kilowatt-hours (10 4 kWh) or 10,000 cubic meters (10 4 m 3 );

[0221] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh) or tonnes of carbon dioxide per 10,000 cubic meters (tCO2 / 10 4 m 3 ).

[0222] Note: Carbon emission sources for the mooring test procedure are measured separately.

[0223] (18) Calculation of carbon emissions during sea trials:

[0224] In the formula:

[0225]

[0226] j represents carbon emission sources, including direct emissions, indirect emissions, and process emissions, including but not limited to diesel, fuel oil, liquefied natural gas, methanol, etc.

[0227] AD ij The carbon emission consumption of energy-consuming equipment i from source j is expressed in tons (t) or 10,000 kilowatt-hours (10 4 kWh);

[0228] EF j The carbon emission factor of carbon emission source j is expressed in tons of carbon dioxide per ton (tCO2 / t) or tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh).

[0229] Note: The energy consumption figures for diesel, fuel oil, liquefied natural gas, methanol, etc., during the sea trial process are from production statistics records.

[0230] (19) Calculation of carbon emissions from energy consumption in auxiliary production systems:

[0231] In the formula:

[0232] E 辅助生产系统用能 The carbon emissions generated by the auxiliary production system during the manufacturing process of the target ship are expressed in tons of carbon dioxide (tCO2).

[0233] E 压缩空气 The carbon emissions generated by compressed air in the energy consumption of the auxiliary production system of the target ship are expressed in tons of carbon dioxide (tCO2).

[0234] E 办公楼 The carbon emissions generated by the office building in the energy consumption of the target ship's auxiliary production system are expressed in tons of carbon dioxide (tCO2).

[0235] E 实验室 The carbon emissions generated in the laboratory during the energy consumption of the target ship's auxiliary production system are expressed in tons of carbon dioxide (tCO2).

[0236] E 照明 The carbon emissions from lighting in the energy consumption of the target ship's auxiliary production system are expressed in tons of carbon dioxide (tCO2).

[0237] E 采暖制冷 The carbon emissions from heating and cooling in the auxiliary production system of the target ship are expressed in tons of carbon dioxide (tCO2).

[0238] E 运输 The carbon emissions generated from transportation in the energy use of the target ship's auxiliary production system are expressed in tons of carbon dioxide (tCO2).

[0239] E 污水处理 The carbon emissions from wastewater treatment in the energy consumption of the target ship's auxiliary production system are expressed in tons of carbon dioxide (tCO2).

[0240] (20) For interior painting operations, compressed air carbon emissions are already included in painting carbon emissions. For other processes, compressed air carbon emissions are calculated as follows:

[0241] In the formula:

[0242]

[0243] i represents the work area that uses compressed air, such as the final assembly area;

[0244] E 压缩空气Carbon emissions from compressed air of the target ship, expressed in tons of carbon dioxide (tCO2).

[0245] D 目标船，i The amount of processing done on the target vessel in work area i, such as the amount of completed section manufacturing or the total weight of the sections, is expressed in tons (t).

[0246] D i The processing volume of all ship products in work area i during the target ship manufacturing cycle, such as the completion volume of section manufacturing and the weight of the whole section, in tons (t).

[0247] AD 压缩空气总量，i The total amount of compressed air used to manufacture all ship products within work area i during the target ship manufacturing cycle, expressed in cubic meters (m³). 3 );

[0248] δ represents the electricity consumption per unit volume of compressed air, expressed in kilowatt-hours per cubic meter (kWh / m³). 3 );

[0249] EF 电 This is the carbon emission factor for electricity, expressed in tons of carbon dioxide per 10,000 kilowatt-hours (tCO2 / 10). 4 kWh).

[0250] (21) Calculation of carbon emissions from office buildings:

[0251] In the formula:

[0252]

[0253] E 办公楼 Carbon emissions from the target ship's office building are expressed in tons of carbon dioxide (tCO2).

[0254] E 办公楼总量 The total carbon emissions of the entire factory office building during the target ship's manufacturing cycle are expressed in tons of carbon dioxide (tCO2).

[0255] D 目标船 The number of days to manufacture the target ship, in days (d).

[0256] D 全厂 The number of days (d) is the total number of days (days) for manufacturing all ship products in the entire factory within the target ship manufacturing cycle.

[0257] (22) Calculation of carbon emissions in the laboratory:

[0258] In the formula:

[0259]

[0260] E 实验室The target ship's laboratory carbon emissions are expressed in tons of carbon dioxide (tCO2).

[0261] E 实验室总量 The total carbon emissions of the entire plant's laboratories during the target ship's manufacturing cycle are expressed in tons of carbon dioxide (tCO2).

[0262] D 目标船 The number of days to manufacture the target ship, in days (d).

[0263] D 全厂 The number of days (d) is the total number of days (days) for manufacturing all ship products in the entire factory within the target ship manufacturing cycle.

[0264] (23) If lighting electricity consumption cannot be measured separately, the carbon emissions from lighting in the production workshop and assembly area are already included in the carbon emissions of each process in the production system, and the carbon emissions from lighting in the office building and laboratory are already included in the carbon emissions of the office building and laboratory. If lighting electricity consumption can be measured separately, the carbon emissions from lighting are calculated as follows: (twenty three)

[0266]

[0267] In the formula:

[0268] E 照明 The target ship's lighting carbon emissions are expressed in tons of carbon dioxide (tCO2).

[0269] E 照明总量 The total carbon emissions from lighting throughout the shipyard during the target ship's manufacturing cycle are expressed in tons of carbon dioxide (tCO2).

[0270] D 目标船 The number of days to manufacture the target ship, in days (d).

[0271] D 全厂 The number of days (d) is the total number of days (days) for manufacturing all ship products in the entire factory within the target ship manufacturing cycle.

[0272] (24) Heating carbon emissions are already included in the steam carbon emissions of energy consumption in the production system. Refrigeration carbon emissions are already included in the carbon emissions of office buildings and laboratories.

[0273] (25) Calculation of carbon emissions from transportation:

[0274] In the formula:

[0275]

[0276] E 运输 The target ship's transport carbon emissions are expressed in tons of carbon dioxide (tCO2).

[0277] E运输总量 The total carbon emissions from the entire plant's transportation during the target ship's manufacturing cycle are expressed in tons of carbon dioxide (tCO2).

[0278] D 目标船 The total weight of the target ship is expressed in tons (t).

[0279] D 全厂 The total weight of all ship products produced in the entire factory during the target ship's manufacturing cycle is expressed in tons (t).

[0280] (26) Calculation of carbon emissions from wastewater treatment:

[0281] In the formula:

[0282]

[0283] E 污水处理 Carbon emissions from wastewater treatment of the target ship are expressed in tons of carbon dioxide (tCO2).

[0284] E 污水处理总量 The total carbon emissions from the wastewater treatment plant during the target ship's manufacturing cycle are expressed in tons of carbon dioxide (tCO2).

[0285] D 目标船 The total weight of the target ship is expressed in tons (t).

[0286] D 全厂 The total weight of all ship products produced in the entire factory during the target ship's manufacturing cycle is expressed in tons (t).

[0287] (27) Carbon emissions from outsourced processing shall be based primarily on data measured by a third-party organization at the outsourced processing unit. If such data is unavailable, the calculation formula shall be used:

[0288] In the formula:

[0289]

[0290] E 委外加工 The carbon emissions generated during the outsourcing of manufacturing processes for the target ship are expressed in tons of carbon dioxide (tCO2).

[0291] i represents the type of outsourced processing procedure;

[0292] D i The quantity of materials processed by outsourcing for the target ship, such as the amount of steel processed, the amount of sections completed, etc., in tons (t).

[0293] EFi is the carbon emission factor of the amount of material processed by the target ship, expressed in tons of carbon dioxide per ton (tCO2 / t).

[0294] (28) Calculation of carbon dioxide recovery and utilization:

[0295] In the formula:

[0296]

[0297] E 回收利用 The carbon emissions generated during the manufacturing process of the target ship are captured, treated, and reused. The unit is tons of carbon dioxide (tCO2).

[0298] D 目标船 The total weight of the target ship is expressed in tons (t).

[0299] D 全厂 The total weight of all ship products produced in the entire shipyard during the target ship's manufacturing cycle is expressed in tons (t).

[0300] E 回收利用总量 The total amount of carbon dioxide recovered and utilized during the entire manufacturing process of the target ship is expressed in tons of carbon dioxide (tCO2).

[0301] (29) Calculation of carbon removal:

[0302] In the formula:

[0303]

[0304] E 碳清除 The amount of carbon removed during the manufacturing process of the target ship is expressed in tons of carbon dioxide (tCO2).

[0305] D 目标船 The total weight of the target ship is expressed in tons (t).

[0306] D 全厂 The total weight of all ship products produced in the entire shipyard during the target ship's manufacturing cycle is expressed in tons (t).

[0307] E 碳清除总量 The carbon removal amount during the entire manufacturing process of the target ship is measured in tons of carbon dioxide (tCO2).

[0308] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A method for measuring the carbon footprint of various types of marine engineering equipment, characterized in that, The carbon footprint measurement method includes the following steps: (1) Define the measurement boundaries of the entire process from raw material acquisition to the delivery of marine engineering equipment; (2) Construct a modular, multi-level quantitative model that can be adapted to different equipment types, and systematically identify the key greenhouse gas emission sources in each cycle stage; (3) Based on the multi-level quantitative model, systematically collect and input the activity level data of the target equipment generated in the design, procurement and construction plans; (4) Based on the activity level data, perform systematic calculation and summary of greenhouse gas emissions.

2. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 1, characterized in that, The multi-level quantization model in step (2) includes: Equipment system unit metering is used to measure the carbon emissions of the main functional modules of the hull structure, propulsion system, positioning system, and deck machinery. Construction phase process measurement is used to measure carbon emissions from key construction stages such as steel pretreatment, segmented manufacturing, overall assembly, system installation and commissioning; Materials and energy resources measurement is used to measure the consumption of major raw materials and the carbon emissions of various energy media such as electricity and fuel.

3. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 2, characterized in that, The equipment system unit measurement is quantified using carbon emissions per unit structural weight, carbon emissions per unit power, or carbon emissions per unit functional unit.

4. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 2, characterized in that, The construction phase process measurement is quantified by carbon emissions per unit processing area, carbon emissions per unit installation man-hour, or carbon emissions per unit commissioning time.

5. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 2, characterized in that, The material and energy resource measurement is used to measure the implicit carbon emissions and direct carbon emissions of the main raw materials in the material list by combining their weight and energy consumption.

6. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 1, characterized in that, The model includes at least the raw material and energy acquisition stage and the manufacturing process stage, wherein: The raw materials and energy acquisition stage includes carbon emissions from the production and transportation of main materials and fuels, as well as electrical energy. The manufacturing process includes carbon emissions generated during the following stages: steel arrival at the factory, steel processing, segmented assembly, segmented intermediate assembly, large assembly, outfitting component processing, outfitting, painting, final assembly, mooring tests, and sea trials. These emissions cover carbon emissions from energy use in the production system, carbon emissions from energy use in the auxiliary production system, carbon emissions from outsourced processing, carbon dioxide recovery and utilization, and carbon removal.

7. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 2, characterized in that, The activity level data in step (3) includes: Data extracted from design data: Analyze the 3D digital model of the equipment and production design drawings to obtain the physical attribute data of each system unit; Data extracted from procurement data: Integrate the material procurement list to obtain the precise procurement weight or volume of the main raw materials; Data extracted from the construction plan: Based on the construction process specifications and production plan, obtain the workload of key processes.

8. The activity level data is mapped to the equipment system unit measurement, construction phase process measurement, and material and energy resource measurement in the multi-level quantitative model according to their attributes.

9. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 1, characterized in that, The systematic calculation and summarization of greenhouse gas emissions in step (4) includes the following steps: (a) Selection of emission factors: Priority shall be given to specific emission factors based on actual measurements or provided by suppliers, or to the average emission factor of the Chinese regional power grid published by an authoritative body, or the default value of the national greenhouse gas inventory or the default emission factor in a recognized database; (b) Perform step-by-step calculations: (c) Calculation of raw material acquisition stage: The carbon emissions of the raw material acquisition stage are calculated by multiplying the consumption of various raw materials and energy consumption of the main materials, auxiliary materials, fuels and electricity produced from natural resources with their corresponding emission factors. (d) Production stage calculation: The production stage processes include steel pretreatment, cutting and processing, pipe processing, outfitting, painting, assembly, mounting, mooring tests and sea trials. The activity level data of each production stage process are multiplied by the corresponding emission factor to obtain the carbon emissions of each process. (e) System boundary aggregation: The above carbon emissions are aggregated to obtain the complete carbon footprint data of the marine engineering equipment at the entire process metering boundary from raw material acquisition to marine engineering equipment delivery.

10. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 8, characterized in that, The carbon footprint data is further used to generate carbon emission composition analysis reports at the equipment level, system unit level, and process level to identify carbon hotspots and provide a basis for emission reduction optimization. The carbon footprint measurement method for multiple types of marine engineering equipment as described in claim 8 is characterized in that the carbon footprint calculation of the marine engineering equipment-related products is as follows: In the formula: E 碳足迹 Carbon footprint of marine engineering equipment-related products, in tons of carbon dioxide (tCO2). E 原材料 The carbon emissions generated from the raw materials consumed in the manufacturing of marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2). E 配套设备 Carbon emissions generated by supporting equipment manufactured for marine engineering equipment-related products, expressed in tons of carbon dioxide (tCO2). E 物料运输 The carbon emissions generated during the transportation of raw materials, supporting equipment, and energy consumed in production and manufacturing from the supplier's location to the ship assembly enterprise, expressed in tons of carbon dioxide (tCO2). E 制造过程 This refers to the carbon emissions generated during the production and manufacturing process of ship assembly enterprises, expressed in tons of carbon dioxide (tCO2).

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