Wood structure component carbon emission calculation method, device, equipment, medium and product

Abstract

The invention discloses a wood structure component carbon emission calculation method, device, equipment, medium and product, and the method comprises the steps: carrying out the data monitoring and collection of the production process of each wood structure component, so as to obtain the wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component, then respectively calculating wood growth carbon solid storage in a wood growth stage, carbon emission in a log cutting stage, carbon emission in a transportation stage and carbon emission in a processing stage of each wood component; adding the carbon emission in the log cutting stage, the carbon emission in the transportation stage and the carbon emission in the processing stage, and subtracting the carbon solid storage in the wood growth stage to obtain the carbon emission of each wood structure component. According to the method, a process analysis method is adopted, all related items of carbon emission before delivery of each wood component product are traced, the carbon emission of each item is calculated item by item, then the final carbon emission of the wood component product is calculated in an accumulated mode, and therefore the accuracy of calculation of the carbon emission of the wood component can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission calculation, and in particular to a method, device, equipment, medium and product for calculating carbon emission of a wood structure component. Background Art

[0002] The construction industry is an important part of my country's carbon emissions. The carbon emissions from the mining of building materials, production of building materials, transportation and construction caused by the construction industry are as high as 1.6 billion tCO2e, accounting for 14% of the country's total carbon emissions. Wood has a lower carbon footprint in its life cycle due to its carbon storage function, and is widely recognized as a low-carbon building material internationally. Building carbon emissions include operational carbon emissions and embodied carbon emissions. The former comes from the consumption of energy and water generated during the operation of the building, and the latter is related to related production, construction and demolition activities with building materials as the carrier. Among them, carbon emissions from building materials production constitute the main part of building embodied carbon emissions. Accurate calculation of carbon emissions is a prerequisite for carbon emission assessment and responsibility tracing of building materials and buildings, formulation of carbon reduction measures, and even future carbon market transactions.

[0003] There are two main types of models for calculating carbon emissions of general products. One is a "top-down" model based on input-output analysis; the other is a "bottom-up" model based on process analysis. The former takes the entire system as the boundary and can reflect the physical relationship between energy, material input and final output carbon emission intensity through input-output information. The data required for carbon emission calculation is relatively small and highly operational. Existing research on carbon emissions of wood structure products mostly uses input-output analysis to collect data on energy consumption such as electricity and diesel, as well as material consumption data such as adhesives and paints in wood structure processing factories throughout the year, and then divides it by the factory's component output that year to obtain the average carbon emission data per cubic meter of wood structure components.

[0004] However, this method has many problems. First, the data is unreliable. For example, the collected factory electricity meter data often contains a certain proportion of non-production electricity. Second, the data obtained is an average value, which cannot reflect the differences caused by different wood structure products, processing methods, and production efficiency. Third, the calculation results of this method cannot reflect the intermediate process and cannot assist in discovering carbon emission hotspots in the processing process to formulate corresponding carbon reduction measures. It can be seen that the current calculation method of carbon emissions of wood structure components in the construction industry is not complete and cannot accurately calculate the carbon emissions of wood structure components. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method, device, equipment, medium and product for calculating carbon emissions of wooden structural components, which adopts process analysis method to trace back all relevant items of carbon emissions of each wooden component product before leaving the factory, calculate the carbon emissions of each item item by item, and then cumulatively calculate the final carbon emissions of the wooden component products, thereby effectively improving the accuracy of carbon emission calculation of wooden structural components.

[0006] In order to achieve the above object, an embodiment of the present invention provides a method for calculating carbon emissions of a wood structure component, comprising:

[0007] Data is monitored and collected for the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage;

[0008] According to the wood growth data, the energy consumption data, the material consumption data and the transportation data, the wood growth carbon sequestration in the wood growth stage, the carbon emissions in the log felling stage, the carbon emissions in the transportation stage and the carbon emissions in the processing stage of each of the wood structural components are calculated respectively; wherein the carbon emissions in the transportation stage include the carbon emissions from log transportation, the carbon emissions from fossil fuel transportation, the carbon emissions from basic material transportation and the carbon emissions from inter-factory transportation of semi-finished products;

[0009] The carbon emissions of each wooden structural component are obtained by adding the carbon emissions of the log harvesting stage, the carbon emissions of the transportation stage, and the carbon emissions of the processing stage, and then subtracting the carbon sequestration of wood growth in the wood growth stage.

[0010] As an improvement of the above scheme, the wood growth data includes the dry mass of the wood and the carbon content of the wood, and the calculation formula for the wood growth carbon sequestration in the wood growth stage is:

[0011]

[0012] Where, CE A0 Represents carbon sequestration during wood growth, in kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i It represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the ratio of the molecular weight of carbon dioxide to carbon.

[0013] As an improvement of the above-mentioned scheme, the carbon emissions in the processing stage include the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factory, and the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factory both include the carbon emissions from the processing procedures and the carbon emissions from common items in the workshop.

[0014] As an improvement to the above solution, the calculation method of the carbon emissions from the processing in the factory or the processing in the outsourced factory is:

[0015] Determine at least one processing step of the wood structural member and a functional unit corresponding to each processing step; wherein the functional unit is a basic unit for calculating the carbon emission of the corresponding processing step;

[0016] Calculate the carbon emissions of each processing step according to the number of functional units, energy consumption data, material consumption data and carbon emission factors corresponding to each processing step;

[0017] Calculate the carbon emissions of the workshop's shared items based on the energy consumption data, carbon emission factors, weight of the wood structural components, and the total weight of the workshop's processed components for each shared item in the workshop;

[0018] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop common projects are added together to obtain the carbon emissions of the processing in the factory or the carbon emissions of the processing in the outsourced factory.

[0019] As an improvement of the above solution, the method further includes:

[0020] The carbon emission factor of each of the wood structural components is calculated according to the carbon emission of each of the wood structural components and the measurement unit of each of the wood structural components.

[0021] As an improvement of the above solution, the method further includes:

[0022] The carbon emission factor of each of the wooden structural components, the carbon emission of the wooden structural components, the carbon emission of each stage in the production process of the wooden structural components, and the process analysis list are stored in layers; wherein the process analysis list includes data on various energy and material consumption and corresponding carbon emission factors.

[0023] The embodiment of the present invention further provides a device for calculating carbon emissions of a wood structure component, comprising:

[0024] A data collection module is used to monitor and collect data on the production process of each wood structure component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component; wherein the production process of the wood structure component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage;

[0025] a stage carbon emission calculation module, for calculating the wood growth carbon sequestration in the wood growth stage, the carbon emission in the log felling stage, the carbon emission in the transportation stage, and the carbon emission in the processing stage of each of the wood structural components according to the wood growth data, the energy consumption data, the material consumption data, and the transportation data; wherein the carbon emission in the transportation stage includes the carbon emission of log transportation, the carbon emission of fossil fuel transportation, the carbon emission of basic material transportation, and the carbon emission of semi-finished product inter-factory transportation;

[0026] The wood component carbon emission calculation module is used to add the carbon emissions of the log felling stage, the carbon emissions of the transportation stage and the carbon emissions of the processing stage of each wood structural component, and then subtract the wood growth carbon sequestration in the wood growth stage to obtain the carbon emissions of each wood structural component.

[0027] An embodiment of the present invention also provides a terminal device, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein the processor implements any of the above-mentioned methods for calculating carbon emissions of wooden structural components when executing the computer program.

[0028] An embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any of the above-mentioned methods for calculating carbon emissions of wooden structural components.

[0029] An embodiment of the present invention further provides a computer program product, which includes a computer program or computer instructions. When the computer program or the computer instructions are executed by a processor, any of the above-mentioned methods for calculating carbon emissions of wooden structural members is implemented.

[0030] Compared with the prior art, the beneficial effects of a method, device, equipment, medium and product for calculating carbon emissions of a wood structure component provided by an embodiment of the present invention are: by monitoring and collecting data on the production process of each wood structure component, the wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component are obtained; wherein the production process of the wood structure component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage; according to the wood growth data, the energy consumption data, the material consumption data and the transportation data, the carbon emissions of each wood structure component are calculated respectively. The carbon sequestration of wood growth in the wood growth stage, the carbon emissions in the log felling stage, the carbon emissions in the transportation stage, and the carbon emissions in the processing stage of the wood structural component; wherein the carbon emissions in the transportation stage include the carbon emissions of log transportation, the carbon emissions of fossil fuel transportation, the carbon emissions of basic material transportation, and the carbon emissions of semi-finished product inter-factory transportation; after adding the carbon emissions in the log felling stage, the carbon emissions in the transportation stage, and the carbon emissions in the processing stage of each wood structural component, the carbon sequestration of wood growth in the wood growth stage is subtracted to obtain the carbon emissions of each wood structural component. The embodiment of the present invention adopts a process analysis method to trace all relevant items of carbon emissions of each wood component product before leaving the factory, and includes the carbon sequestration in the wood growth stage in the carbon emission calculation scope of the wood structural component. In addition to the transportation of raw materials, the transportation stage also includes the carbon emissions of fossil fuel transportation, basic material transportation, and semi-finished product inter-factory transportation, covering a full range of transportation objects. The processing stage traces all processing procedures completely, thereby effectively improving the accuracy of carbon emission calculation of wood structural components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of a preferred embodiment of a method for calculating carbon emissions of a wood structure member provided by the present invention;

[0032] Figure 2 It is a schematic diagram of the framework for dividing the stages of the building life cycle as specified by international standards;

[0033] Figure 3 It is a schematic diagram of the carbon emission measurement stage in a method for calculating carbon emission of a wood structure member provided by the present invention;

[0034] Figure 4 It is a schematic diagram of carbon emission measurement in the processing process in the prior art;

[0035] Figure 5 It is a schematic diagram of carbon emission measurement of a processing step in a carbon emission calculation method for a wood structural member provided by the present invention;

[0036] Figure 6 It is a schematic diagram of hierarchical storage of calculation data in a method for calculating carbon emissions of a wood structure component provided by the present invention;

[0037] Figure 7 It is a structural schematic diagram of a preferred embodiment of a carbon emission calculation device for a wood structural member provided by the present invention;

[0038] Figure 8 It is a structural schematic diagram of a preferred embodiment of a terminal device provided by the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1 , Figure 1 The figure is a flow chart of a preferred embodiment of a method for calculating carbon emissions of a wood structure member provided by the present invention. The method for calculating carbon emissions of a wood structure member comprises:

[0041] S1, monitoring and collecting data on the production process of each wood structure component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component; wherein the production process of the wood structure component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage;

[0042] S2, according to the wood growth data, the energy consumption data, the material consumption data and the transportation data, respectively calculate the wood growth carbon sequestration in the wood growth stage, the carbon emission in the log felling stage, the carbon emission in the transportation stage and the carbon emission in the processing stage of each of the wood structural components; wherein the carbon emission in the transportation stage includes the carbon emission of log transportation, the carbon emission of fossil fuel transportation, the carbon emission of basic material transportation and the carbon emission of semi-finished product inter-factory transportation;

[0043] S3, adding the carbon emissions of the log felling stage, the carbon emissions of the transportation stage and the carbon emissions of the processing stage of each of the wooden structural components, and subtracting the carbon sequestration of wood growth in the wood growth stage to obtain the carbon emissions of each of the wooden structural components.

[0044] It should be noted that building carbon emissions include operational carbon emissions and embodied carbon emissions. The former comes from the consumption of energy and water generated during the operation of the building, and the latter is related to the related production, construction, and demolition activities with building materials as the carrier. Among them, carbon emissions from building material production constitute the main part of building embodied carbon emissions. The basic principle of calculating carbon emissions from building material production is the emission factor method, which is obtained by multiplying the amount of various building materials by the corresponding building material carbon emission factor. Based on the emission factor method, the two key parameters for calculating carbon emissions from building material production are the amount of building materials and the building material carbon emission factor. In practice, data on building material usage is relatively easy to obtain, and can be counted through architectural design drawings, budget tables, and final accounting materials. As for carbon emission factors, the data on the product's factory carbon label / carbon footprint is preferred. When the building materials used cannot provide carbon label / carbon footprint data, some pre-established databases at home and abroad are usually searched, and the data of the building material items that are closest to the products used are cited. At present, the calculation of carbon emissions from wooden structure buildings in my country has the following technical limitations:

[0045] First, there is a lack of basic data on carbon emission factors for wood structure building materials. my country's research on building carbon emissions started late and lacks basic data accumulation, which has caused many inconveniences in carbon emission calculations in actual projects. The current basis for building carbon emission calculations is the national standard GB / T 51366:2019 "Building Carbon Emission Calculation Standard", which provides carbon emission factor data entries for 69 building materials in the appendix, but does not include wood. This leads to the fact that in practice, the calculation of implicit carbon emissions in wood structures can only refer to data from Western countries. However, the carbon emission factors of building materials are regional, and the carbon emission data of foreign building materials production has its corresponding national energy structure and building materials production technology background. Therefore, its carbon emission experience data cannot be directly transferred to China for use as the carbon emission factor of the corresponding product.

[0046] Second, the existing calculation methods for carbon emissions of building materials are rough, and the resulting data is large in granularity. For the calculation of carbon emissions of general products, there are mainly two types of models, one is a "top-down" model based on input-output analysis; the other is a "bottom-up" model based on process analysis. The former takes the entire system as the boundary, and can reflect the physical relationship between energy, material input and final output carbon emission intensity through input-output information, and the data requirements for carbon emission calculation are relatively small, and it is highly operational. Existing research on carbon emissions of wood structure products mostly uses input-output analysis, collects data on energy consumption such as electricity and diesel, as well as material consumption data such as adhesives and paints in wood structure processing factories throughout the year, and then divides it by the factory's component output that year to obtain the average carbon emission data per cubic meter of wood structure components. This method has many problems. First, the data is unreliable. For example, the collected factory electricity meter data often contains a certain proportion of non-production electricity consumption. Second, the data obtained is an average value, which cannot reflect the differences caused by different wood structure products, processing methods, and production efficiency. Third, the calculation results of this method cannot reflect the intermediate process situation and cannot assist in discovering carbon emission hotspots in the processing process to formulate corresponding carbon reduction measures.

[0047] The national standard GB / T 51366:2019 defines "carbon emission factor" as "a coefficient that corresponds energy and material consumption to carbon dioxide emissions, which is used to quantify emissions from related activities at different stages of a building." For general building materials, the "carbon emission factor" refers to the carbon emissions caused by energy and material consumption before a unit of building materials product leaves the factory. According to the widely adopted international standard ISO 21930, the building life cycle is divided into 5 stages AD with a total of 17 items. The building materials product life cycle includes three parts before it leaves the factory: raw material mining (A1), transportation of raw materials to building materials product processing plants (A2), and production of building materials products (A3). A1-A3 are also commonly referred to as the "cradle to gate" stage, which is also the stage covered by general product carbon label data, such as Figure 2 As shown, Figure 2 It is a schematic diagram of the framework for dividing the stages of the entire life cycle of a building as specified by international standards.

[0048] However, the above carbon emission measurement boundary "energy and material consumption" for general building materials products does not apply to wooden structural components (referred to as wooden components) because wooden components themselves are carbon carriers and have carbon storage during the wood growth stage. Figure 3 , Figure 3It is a schematic diagram of the carbon emission measurement stages in the carbon emission calculation method for wood structural components provided by the present invention. With respect to wood components, the present invention also includes the carbon storage in the wood growth (A0) stage within the measurement boundary. In addition, the transportation in the A2 stage also includes the items of fossil fuels, basic materials and semi-finished product transportation on the basis of the raw material transportation of ISO 21930. This is in consideration of the energy consumed by wood component factories. Except for electricity and gas which are transmitted through power grids and pipelines, other solid and liquid fossil energy sources mainly rely on vehicle transportation; in addition, since many factories have incomplete machinery and equipment and some processing procedures need to be outsourced, there are transportation carbon emissions caused by the travel of some semi-finished products between different factories.

[0049] Based on this, an embodiment of the present invention provides a method for calculating carbon emissions of wood structural components, which uses a process analysis-based method to measure the carbon emissions of wood component products. First, the carbon emission-related items of wood component products before leaving the factory are sorted out, and the carbon emissions of each item are measured item by item, and then the carbon emissions of the final wood component products are accumulated. Specifically, first, the production process of each wood structural component is monitored and collected to obtain the wood growth data, energy consumption data, material consumption data and transportation data of each wood structural component. Among them, according to the characteristics of the execution subjects and carbon emission methods of forest product cultivation, wood and wood component processing and transportation, the product carbon emission measurement in the production process of wood structural components is divided into wood growth stage A0, log felling stage A1, transportation stage A2 and processing stage A3. Then, according to the wood growth data, the wood growth carbon sequestration in the wood growth stage is calculated; according to the energy consumption data in the log felling stage, the carbon emissions in the log felling stage are calculated; according to the transportation data, the carbon emissions in the transportation stage are calculated; according to the energy consumption data and material consumption data in the processing stage, the carbon emissions in the processing stage are calculated. Finally, the carbon emissions of each wooden structural component during the log harvesting stage, the transportation stage, and the processing stage are added together, and the carbon sequestration of wood growth during the wood growth stage is subtracted to obtain the carbon emissions of each wooden structural component. The calculation formula is as follows:

[0050] CE A0-A3 =CE A1 +CE A2 +CE A3 -CE A0

[0051] Where, CE A0-A3 Indicates the carbon emissions of wood components from wood growth to completion of processing, in kgCO2e; CE A0 Indicates carbon sequestration during wood growth, in kgCO2e; CE A1 Represents carbon emissions from log harvesting, in kgCO2e; CE A2 Indicates carbon emissions from transportation, in kgCO2e; CE A3Represents carbon emissions from wood component processing, in kgCO2e.

[0052] After calculating the carbon emission of each wood structure component, the carbon emission factor of each wood structure component is calculated according to the carbon emission of each wood structure component and the measurement unit of each wood structure component. The calculation formula is as follows:

[0053]

[0054] Where CEF is the carbon emission factor of wood component products, and the unit is kgCO2e / unit or kgCO2e / m 3 CU represents the measurement unit of wood component products, in pieces or m 3 .

[0055] It should be noted that the embodiment of the present invention proposes “individual” and “m” according to the application scenario of the carbon emission measurement result. 3 Two units of measurement for carbon emissions from wood component products:

[0056] The unit of measurement is “piece”. It is convenient to label each wood component with a product carbon label, and it is proposed to use “piece” as the unit of measurement for carbon emissions of wood component products.

[0057] With "m 3 " is used as the unit of measurement. Considering the market transactions of wood structure products, enterprise output calculations and related carbon emission evaluation and certification standards, cubic meters (m 3 ) to calculate the value of wood structure component trade, production and use. In order to facilitate the connection with these application scenarios, it is proposed to use m 3 As a unit of measurement for carbon emissions from wood component products.

[0058] The above two measurement units can be converted by the apparent density of wood component products. To simplify the description, the following only uses the unit of carbon emissions of wood component products.

[0059] The embodiment of the present invention can achieve the goal of assigning a carbon emission factor to each wood component separately, and distinguishing the carbon emission values ​​between different components. The carbon emission values ​​between different components depend on the production process and are affected by the process. The commonly used input-output method cannot achieve this goal. The present invention is based on the process analysis method and proposes a measurement method that can measure the process data of each component production stage and distinguish the difference in carbon emissions between different components.

[0060] In another preferred embodiment, the wood growth data includes the dry mass of the wood and the carbon content of the wood, and the calculation formula for the wood growth carbon sequestration in the wood growth stage is:

[0061]

[0062] Where, CE A0 Represents carbon sequestration during wood growth, in kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i It represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the ratio of the molecular weight of carbon dioxide to carbon.

[0063] Specifically, the carbon sequestration in the wood growth (A0) stage reflects that trees store CO2 in the atmosphere in the form of biomass CH2Os compounds in wood through photosynthesis. The present invention proposes the following A0 stage carbon sequestration calculation method:

[0064]

[0065] Where, CE A0 Represents carbon sequestration during wood growth, in kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i It represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the ratio of the molecular weight of carbon dioxide to carbon.

[0066] Among them, M r,i Can be obtained by sampling, drying and weighing; C i It is advisable to determine it by wet burning method or dry burning method. When the testing conditions are not available, the wood carbon content data provided by relevant standards or databases can be used.

[0067] The embodiment of the present invention incorporates the carbon sequestration during the growth stage of wood into the calculation range of carbon emissions of wooden structural components, thereby being able to effectively improve the accuracy of carbon emission calculation of wooden structural components.

[0068] The carbon emission source in the log felling (A1) stage is mainly the energy consumed by the felling machine in the process of felling mature plants in the wood forest, including fossil energy consumption and electricity. The present invention proposes the following A1 stage carbon emission calculation method:

[0069]

[0070] Where, CE A1 Represents carbon emissions during log harvesting, in kgCO2e; E i Indicates the consumption of the i-th energy in the calculation period, in kg, L or kWh; CEF e,i Represents the carbon emission factor of the i-th energy source, in units of kgCO2e / kg, kgCO2e / L or kgCO2e / kWh.

[0071] Among them, E i It can be obtained by calculating the oil gauge or electric meter of the logging machine during the cycle.

[0072] For the transportation (A2) stage, the embodiment of the present invention incorporates the items of fossil fuel, basic materials and semi-finished product transportation on the basis of the raw material transportation of ISO 21930. This is in consideration of the energy consumed by the wood component factory. Except for electricity and gas, which are transported through the power grid and pipeline network, other solid and liquid fossil energy sources mainly rely on vehicle transportation; in addition, since many factories have incomplete machinery and equipment, some processing procedures need to be outsourced, which results in transportation carbon emissions caused by the round-trip transportation of some semi-finished products between different factories. The source of carbon emissions in the transportation (A2) stage is the consumption of fossil or electric energy generated by the vehicles used. The objects of transportation include wood, basic materials such as adhesives, preservatives, paints, fossil energy such as diesel and gasoline, and the transportation of semi-finished wood components between different processing plants. The present invention refers to the national standard GB / T 51366-2019 "Building Carbon Emission Calculation Standard" and proposes the following A2 stage carbon emission calculation method:

[0073]

[0074] Where, CE A2 Represents carbon emissions during the transportation phase, in kgCO2e; M s,i Indicates the mass of the i-th transport object, in kg; D s,i Indicates the transportation distance of the i-th transportation object, in km; CEF s,i It represents the carbon emission factor per unit mass and per unit distance under the transportation mode of the i-th transportation object, in kgCO2e / (t·km).

[0075] Among them, D s,i It is advisable to give priority to the actual transportation distance recorded by the means of transportation. When the actual transportation distance is unknown, it can be defaulted to the distance between the starting and ending points of the transportation.

[0076] For the transportation stage, the embodiment of the present invention not only takes into account the carbon emissions from the transportation of raw materials, but also the transportation of fossil fuels, basic materials and semi-finished products between factories, thus covering a comprehensive range of transportation objects, thereby effectively improving the accuracy of carbon emission calculations for wooden structural components.

[0077] In another preferred embodiment, the carbon emissions in the processing stage include the carbon emissions from processing in the factory and the carbon emissions from processing in an outsourced factory, and the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factory both include the carbon emissions from the processing procedures and the carbon emissions from common items in the workshop.

[0078] Specifically, the embodiment of the present invention emphasizes that all processing procedures need to be fully traced for the processing stage A3. It should be noted that the carbon emission measurement boundary emphasized here is not the physical boundary of the factory, but the relevant carbon emission sources of the prefabricated wooden structure components in the A3 stage need to be fully traced. This is mainly due to the different objective conditions such as the scale of each factory and the type of machinery. Some factories have complete prefabrication processes, while others may have some processes outsourced. For the latter, carbon emissions measurement cannot be carried out only in the factory, and the data of the outsourced processes should also be traced, otherwise the complete A3 stage data cannot be obtained. Moreover, whether it is the carbon emissions from processing in the factory or the carbon emissions from processing in the outsourced factory, it includes the carbon emissions from the processing procedures and the carbon emissions from the workshop common projects.

[0079] In another preferred embodiment, the carbon emissions from the processing in the factory or the carbon emissions from the processing in the outsourced factory are calculated as follows:

[0080] Determine at least one processing step of the wood structural member and a functional unit corresponding to each processing step; wherein the functional unit is a basic unit for calculating the carbon emission of the corresponding processing step;

[0081] Calculate the carbon emissions of each processing step according to the number of functional units, energy consumption data, material consumption data and carbon emission factors corresponding to each processing step;

[0082] Calculate the carbon emissions of the workshop's shared items based on the energy consumption data, carbon emission factors, weight of the wood structural components, and the total weight of the workshop's processed components for each shared item in the workshop;

[0083] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop common projects are added together to obtain the carbon emissions of the processing in the factory or the carbon emissions of the processing in the outsourced factory.

[0084] Specifically, for the wood component processing (A3) stage, whether it is processed in the factory or outsourced, the carbon emission sources mainly come from two parts. One part is the processing procedures for specific components. The typical processing procedures are shown in Table 1 below, including sawn wood processing procedures, billet processing procedures, component processing procedures, and post-processing procedures. In addition, there are some workshop shared projects, mainly gantry trucks and forklifts to assist in factory transportation; shared dust collection systems, lighting systems, and scattered electric fans. The carbon emissions in the A3 stage are generated by the energy and material consumption of the above-mentioned processing procedures and workshop shared projects.

[0085] Table 1 Typical processes and energy and material consumption in the wood component processing stage

[0086]

[0087] Due to the differences in objective measurement conditions for carbon emissions from processing procedures and carbon emissions from workshop common projects, the present invention proposes two corresponding measurement methods:

[0088] ① In the A3 stage of wooden components, the carbon emissions of the processing procedures and the carbon emissions of the common items in the workshop should be measured separately, and then the carbon emissions of each component production stage should be calculated.

[0089] CE A3 =PCE+SCE

[0090] Where, CE A3 It represents the carbon emissions in the wood component processing stage, in kgCO2e; PCE represents the carbon emissions in the wood component processing procedure, in kgCO2e; SCE represents the carbon emissions of the shared items in the wood component workshop, in kgCO2e.

[0091] ② The sawing, billet processing, component processing and post-processing modules of the wood component factory processing process should be measured in prefabrication process functional units (FU), and the carbon emissions of each component prefabrication process should be accumulated.

[0092] FU is a unit of measurement that characterizes the workload of the factory processing process of prefabricated wood structural components (i.e., the activity level of the prefabrication process). For example, the painting process is measured in terms of the painting area (m 2 ) represents the amount of paint work, so 1m 2 The coating area is 1 FU of the painting process.

[0093]

[0094] Where PCE represents the carbon emission of wood component processing, unit is kgCO2e; PCE i represents the carbon emission of the i-th processing step of the wood component, in kgCO2e / FU; PAD i It represents the workload (i.e., activity level data) of the i-th processing step of the wood component, in units of FU; PADe i,a PADm represents the energy consumption of the ath type of the i-th processing step of the wood component, in kg / FU, L / FU or kWh / FU; i,b It represents the consumption of the bth material in the i-th processing step of the wood component, in kg / FU or t / FU; CEFe a Indicates the carbon emission factor of the a-th energy source, in kgCO2e / kg, kgCO2e / L, or kgCO2e / kWh; CEFm b Represents the carbon emission factor of the bth energy source, in kgCO2e / kg or kgCO2e / t.

[0095] It should be noted that for the measurement of carbon emissions from the wood component processing process, the number of samples should not be less than 30 groups; the p-value of the fitting result of the process carbon emissions-functional unit data should not be higher than 0.05; when the p-value is not higher than 0.05, the fitting result is used as the measurement result of the carbon emissions from the processing process; when the p-value is higher than 0.05, the median of the measurement samples is used as the measurement result of the carbon emissions from the processing process.

[0096] The embodiment of the present invention uses the process as the measurement unit and can collect data without affecting the normal production of wooden components. This means that it is not necessary to conduct a separate experiment and it cannot be assumed that only the test object is in production on the production line. The practical problem that continuous production leads to difficulty in separating data between different components must be considered.

[0097] See also Figure 4 , Figure 4 This is a schematic diagram of carbon emission measurement in the processing process in the prior art. The conventional idea of ​​the prior art is to track a single component from the entire process of entering the workshop to leaving the workshop. This is the most ideal measurement and accounting method. The data obtained by tracking the entire process is the most reliable, but it is almost not feasible. The reasons are: 1. Some processes in the factory are outsourced, and the complete data cannot be tracked in one workshop; 2. In actual production, many processes are not processed one by one. On the assembly line or in large equipment, many components are processed in a batch and cannot be distinguished unless the production of other components is stopped.

[0098] See also Figure 5 , Figure 5 This is a schematic diagram of carbon emission measurement in a wood structural member carbon emission calculation method provided by the present invention. The measurement idea proposed by the present invention is to fit the carbon emission parameters of the process by tracking the production process and testing enough samples. First, determine the appropriate unit of process workload representation - functional unit FU. For example, the FU of gluing is the gluing area (m 2 ); then conduct multiple groups of carbon emission tests on the process, complete the process FU carbon emission quota, and then calculate the carbon emission of the component based on this; for example, for wooden beams of different lengths of 10m and 20m, the gluing workload is different, but only the gluing workload of 1m is measured. 2 The carbon emissions generated at the interface are used to obtain the carbon emission parameters of the process, and then the carbon emissions of each beam gluing process are calculated based on the gluing surface area of ​​1m wooden beam and the above-mentioned wooden beam length data.

[0099] ③ The workshop common items in the wood component factory processing process should be measured in terms of total workshop consumption and reasonably allocated to each component through accounting rules.

[0100] The common items in the workshop are: forklifts, which consume diesel and are used to assist in transportation within the factory; gantry trucks, which consume electricity and are used to assist in transportation within the factory; dust collection systems, which consume electricity; lighting systems, which consume electricity; scattered electric fans, which consume electricity. These items consume fossil fuels or electricity, and the total amount can be allocated to each component according to the following rules:

[0101]

[0102] In the formula, SCE represents the carbon emissions of the workshop shared project, in kgCO2e; SCE j represents the carbon emission of the jth common project in the workshop during the measurement period, in kgCO2e; m represents the weight of the measured wood components, in kg; M represents the total weight of the processed components in the workshop during the measurement period, in kg; SADe j,a It represents the energy consumption of the jth common project in the workshop, in kg, L or kWh; CEFe a Represents the carbon emission factor of the ath energy source, in units of kgCO2e / kg, kgCO2e / L, or kgCO2e / kWh.

[0103] It should be noted that the energy consumed by the machinery shared by these workshops allows the total amount to be measured within a certain period, but cannot be directly measured to the granularity of a single component. Therefore, the allocation plan of these data is evaluated with reference to relevant regulations.

[0104] For example, for forklift transportation, in the national standard "Building Carbon Emission Calculation Standard" GB / T 51366-2019, the carbon emissions from building material transportation are the product of the weight of building materials, transportation distance and transportation mode carbon emission factor. That is, it is considered that when the means of transportation and transportation distance are constant, the carbon emissions from transportation are directly proportional to the weight of building materials. Therefore, for the production of wooden components, the total fuel consumption data of the workshop can be obtained through the oil gauge or refueling records for a certain period of time, and then allocated to the components according to the calculation rules. Assuming that all components have traveled the same distance from entering the factory, passing through the assembly line operation, and finally leaving the factory, then referring to the calculation method of carbon emissions from building material transportation, it is considered that the fuel consumption of component transportation is proportional to the weight of the component, then:

[0105]

[0106] Similarly, assuming that the dust production, lighting requirements and electric fans turned on to meet the thermal comfort needs of workers during the processing of wooden components are the same, it can be considered that the energy consumption of the factory transportation, dust collection, lighting and electric fan systems is proportional to the weight of the wooden components.

[0107] The carbon emissions measurement of shared projects in wood component processing workshops should be carried out in a cycle that should not be shorter than 1 year and should not be shorter than 1 month. It should be the same as the cycle for the actual factory to count output, pay electricity bills and other energy costs.

[0108] The embodiments of the present invention take into account the different objective conditions of the scale and type of machinery of various wood structure factories in practice. Some factories have complete processing procedures, while others may have some outsourced processes. For the latter, carbon emissions cannot be measured only in the factory, but also the data of the outsourced processes should be traced back, otherwise complete carbon emissions data cannot be obtained. The present invention proposes a process analysis method to clarify the processing procedures, facilitate the targeted collection of corresponding data in actual operations, and ensure the integrity of the carbon emission data measurement of wood component products.

[0109] It should be noted that in the above formula, the carbon emission factor of fossil fuels should be determined in accordance with Appendix A "Main Energy Carbon Emission Factor" of the current national standard "Building Carbon Emission Calculation Standard" GB / T 51366. The carbon emission factor of electricity should give priority to the latest provincial average carbon emission factor of electricity issued by the local administrative department. When there is no provincial data, the latest regional average carbon emission factor of electricity issued by the Ministry of Ecology and Environment can be used. When there is no regional data, the latest national average carbon emission factor of electricity issued by the Ministry of Ecology and Environment can be used. The carbon emission factor of transportation mode should use the carbon footprint data of building materials audited by a third party. When there is no third party provided, the reference value of Appendix E of GB / T 51366-2019 can be used. The carbon emission factor of basic materials should use the carbon footprint data of building materials audited by a third party. When there is no third party provided, the updated carbon emission database can be used.

[0110] In another preferred embodiment, the method further comprises:

[0111] The carbon emission factor of each of the wooden structural components, the carbon emission of the wooden structural components, the carbon emission of each stage in the production process of the wooden structural components, and the process analysis list are stored in layers; wherein the process analysis list includes data on various energy and material consumption and corresponding carbon emission factors.

[0112] For details, please refer to Figure 6 , Figure 6 The following is a schematic diagram of the hierarchical storage of calculation data in a method for calculating carbon emissions of a wood structure member provided by the present invention. Figure 6 The carbon emission factor (CEF), total carbon emission (CE A0-A3 ), Carbon Emissions Items (CE A0 To CE A3), and process analysis (PA) lists, each layer is associated through the above corresponding formulas and finally connected to the PA list. The PA list consists of various energy, material consumption and corresponding carbon emission factor data.

[0113] It should be noted that this data structure facilitates the updating of CEF so that the CEF measurement results represent the actual situation. On the one hand, local updates can be made according to changes in local processes. For example, in a certain year, a CEF is obtained by measuring A wood component in Factory A. 甲,A The following year, Factory A changed a process so that it could use fewer PADs to complete the 1FU process. e,a , or the equipment of the processing plant is broken, so it is entrusted to Factory B for processing. Factory B needs more PADs to complete the 1FU process. e,a In this case, the metering scheme proposed by the present invention allows data update for this process alone to obtain CEF data of A wood component that represents the actual situation without the need to completely measure A wood component again. On the other hand, the database and related metering results managed by it can be updated in a timely manner according to changes in energy and basic material carbon emission factors. For example, as the national grid gradually decarbonizes, the carbon emission factor of electricity decreases year by year, or when the test results in a certain province are migrated to another province, due to differences between provincial electricity carbon emission factors, in these scenarios, the latest local electricity CEF data published by the Ministry of Ecology and Environment and other competent departments can be used. e data, and update the related data associated with it, without having to perform a complete re-measurement.

[0114] Correspondingly, the present invention also provides a device for calculating carbon emissions of wooden structural components, which can implement all processes of the method for calculating carbon emissions of wooden structural components in the above embodiment.

[0115] See also Figure 7 , Figure 7 1 is a schematic diagram of a preferred embodiment of a carbon emission calculation device for a wood structure member provided by the present invention. The carbon emission calculation device for a wood structure member comprises:

[0116] The data collection module 701 is used to monitor and collect data on the production process of each wood structure component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component; wherein the production process of the wood structure component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage;

[0117] The stage carbon emission calculation module 702 is used to calculate the wood growth carbon sequestration in the wood growth stage, the carbon emission in the log felling stage, the carbon emission in the transportation stage and the carbon emission in the processing stage of each of the wooden structural components according to the wood growth data, the energy consumption data, the material consumption data and the transportation data; wherein the carbon emission in the transportation stage includes the carbon emission of log transportation, the carbon emission of fossil fuel transportation, the carbon emission of basic material transportation and the carbon emission of semi-finished product inter-factory transportation;

[0118] The wood component carbon emission calculation module 703 is used to add the carbon emission of the log felling stage, the carbon emission of the transportation stage and the carbon emission of the processing stage of each wood structural component, and then subtract the wood growth carbon sequestration in the wood growth stage to obtain the carbon emission of each wood structural component.

[0119] Preferably, the wood growth data includes the dry mass of the wood and the carbon content of the wood, and the calculation formula for the wood growth carbon sequestration in the wood growth stage is:

[0120]

[0121] Where, CE A0 Represents carbon sequestration during wood growth, in kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i It represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the ratio of the molecular weight of carbon dioxide to carbon.

[0122] Preferably, the carbon emissions in the processing stage include carbon emissions from processing in the factory and carbon emissions from processing in outsourced factories, and the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factories both include carbon emissions from processing procedures and carbon emissions from workshop shared projects.

[0123] Preferably, the carbon emissions from the processing in the factory or the carbon emissions from the processing in the outsourced factory are calculated as follows:

[0124] Determine at least one processing step of the wood structural member and a functional unit corresponding to each processing step; wherein the functional unit is a basic unit for calculating the carbon emission of the corresponding processing step;

[0125] Calculate the carbon emissions of each processing step according to the number of functional units, energy consumption data, material consumption data and carbon emission factors corresponding to each processing step;

[0126] Calculate the carbon emissions of the workshop's shared items based on the energy consumption data, carbon emission factors, weight of the wood structural components, and the total weight of the workshop's processed components for each shared item in the workshop;

[0127] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop common projects are added together to obtain the carbon emissions of the processing in the factory or the carbon emissions of the processing in the outsourced factory.

[0128] Preferably, the device further comprises:

[0129] The carbon emission factor calculation module is used to calculate the carbon emission factor of each of the wooden structural components according to the carbon emission of each of the wooden structural components and the measurement unit of each of the wooden structural components.

[0130] Preferably, the device further comprises:

[0131] The data storage module is used to store in layers the carbon emission factor of each of the wooden structural components, the carbon emission of the wooden structural components, the carbon emission of each stage in the production process of the wooden structural components, and a process analysis list; wherein the process analysis list includes data on various energy and material consumption and corresponding carbon emission factors.

[0132] In specific implementation, the working principle, control process and technical effect achieved by the carbon emission calculation device for wooden structural components provided in the embodiment of the present invention are the same as those of the carbon emission calculation method for wooden structural components in the above embodiment, and will not be repeated here.

[0133] See also Figure 8 , Figure 8 8 is a schematic diagram of a preferred embodiment of a terminal device provided by the present invention. The terminal device includes a processor 801, a memory 802, and a computer program stored in the memory 802 and configured to be executed by the processor 801. When the processor 801 executes the computer program, the method for calculating carbon emissions of wooden structural members described in any of the above embodiments is implemented.

[0134] Preferably, the computer program can be divided into one or more modules / units (such as computer program 1, computer program 2, ...), and the one or more modules / units are stored in the memory 802 and executed by the processor 801 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program in the terminal device.

[0135] The processor 801 can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor, or the processor 801 can be any conventional processor. The processor 801 is the control center of the terminal device, and various parts of the terminal device are connected using various interfaces and lines.

[0136] The memory 802 mainly includes a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function, etc., and the data storage area can store related data, etc. In addition, the memory 802 can be a high-speed random access memory, or a non-volatile memory, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, and a flash card (Flash Card), etc., or the memory 802 can also be other volatile solid-state storage devices.

[0137] It should be noted that the above terminal device may include, but is not limited to, a processor and a memory. Those skilled in the art will understand that Figure 8 The structural diagram is only an example of the above-mentioned terminal device and does not constitute a limitation of the above-mentioned terminal device. It may include more or less components than shown in the figure, or combine certain components, or different components.

[0138] An embodiment of the present invention further provides a computer-readable storage medium, which includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the method for calculating carbon emissions of wooden structural components described in any of the above embodiments.

[0139] An embodiment of the present invention further provides a computer program product, which includes a computer program or computer instructions. When the computer program or the computer instructions are executed by a processor, the method for calculating carbon emissions of wooden structural members described in any of the above embodiments is implemented.

[0140] The embodiment of the present invention provides a method, device, equipment, medium and product for calculating carbon emissions of wood structural components. Data is monitored and collected during the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structural component. The production process of the wood structural component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage. The wood growth carbon sequestration in the wood growth stage, the carbon emissions in the log felling stage, the carbon emissions in the transportation stage and the carbon emissions in the processing stage are calculated for each wood structural component according to the wood growth data, the energy consumption data, the material consumption data and the transportation data. The carbon emissions in the transportation stage include the carbon emissions from log transportation, the carbon emissions from fossil fuel transportation, the carbon emissions from basic material transportation and the carbon emissions from inter-factory transportation of semi-finished products. The carbon emissions in the log felling stage, the carbon emissions in the transportation stage and the carbon emissions in the processing stage of each wood structural component are added together, and then the wood growth carbon sequestration in the wood growth stage is subtracted to obtain the carbon emissions of each wood structural component. The embodiment of the present invention adopts a process analysis method to trace back all relevant items of carbon emissions of each wooden component product before it leaves the factory, and includes the carbon sequestration in the wood growth stage into the carbon emission calculation scope of the wooden structural components. In the transportation stage, the carbon emissions of fossil fuel transportation, basic material transportation and inter-factory transportation of semi-finished products are also included on the basis of raw material transportation, covering a full range of transportation objects. In the processing stage, all processing procedures are fully traced, thereby effectively improving the accuracy of carbon emission calculation of wooden structural components.

[0141] It should be noted that the system embodiment described above is merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the system embodiment provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0142] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for calculating carbon emissions of wood structural components, characterized in that: include: Data is monitored and collected for the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage; According to the wood growth data, the energy consumption data, the material consumption data and the transportation data, the wood growth carbon sequestration in the wood growth stage, the carbon emissions in the log felling stage, the carbon emissions in the transportation stage and the carbon emissions in the processing stage of each of the wood structural components are calculated respectively; wherein the carbon emissions in the transportation stage include the carbon emissions from log transportation, the carbon emissions from fossil fuel transportation, the carbon emissions from basic material transportation and the carbon emissions from inter-factory transportation of semi-finished products; The carbon emissions of each wooden structural component are obtained by adding the carbon emissions of the log harvesting stage, the carbon emissions of the transportation stage, and the carbon emissions of the processing stage, and then subtracting the carbon sequestration of wood growth in the wood growth stage.

2. The method for calculating carbon emissions of wooden structural members according to claim 1, characterized in that: The wood growth data includes the dry mass of the wood and the carbon content of the wood. The calculation formula for the wood growth carbon sequestration during the wood growth stage is: In the formula, CE A0 Represents carbon sequestration during wood growth, in kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i Indicates the carbon content of the i-th type of wood, in %; 44 / 12 represents the molecular weight ratio of carbon dioxide to carbon.

3. The method for calculating carbon emissions of wooden structural members according to claim 1, characterized in that: The carbon emissions in the processing stage include the carbon emissions from processing in this factory and the carbon emissions from processing in outsourced factories, and the carbon emissions from processing in this factory and the carbon emissions from processing in the outsourced factories both include the carbon emissions from the processing procedures and the carbon emissions from common items in the workshop.

4. The method for calculating carbon emissions of wooden structural members according to claim 3, characterized in that: The calculation method of carbon emissions from processing in the factory or the outsourced factory is as follows: Determine at least one processing step of the wood structural member and a functional unit corresponding to each processing step; wherein the functional unit is a basic unit for calculating the carbon emission of the corresponding processing step; Calculate the carbon emissions of each processing step according to the number of functional units, energy consumption data, material consumption data and carbon emission factors corresponding to each processing step; Calculate the carbon emissions of the workshop's shared items based on the energy consumption data, carbon emission factors, weight of the wood structural components, and the total weight of the workshop's processed components for each shared item in the workshop; The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop common projects are added together to obtain the carbon emissions of the processing in the factory or the carbon emissions of the processing in the outsourced factory.

5. The method for calculating carbon emissions of wooden structural members according to claim 1, characterized in that: The method further comprises: The carbon emission factor of each of the wood structural components is calculated according to the carbon emission of each of the wood structural components and the measurement unit of each of the wood structural components.

6. The method for calculating carbon emissions of wooden structural members according to claim 5, characterized in that: The method further comprises: The carbon emission factor of each of the wooden structural components, the carbon emission of the wooden structural components, the carbon emission of each stage in the production process of the wooden structural components, and the process analysis list are stored in layers; wherein the process analysis list includes data on various energy and material consumption and corresponding carbon emission factors.

7. A device for calculating carbon emissions of wood structural components, characterized in that: include: A data collection module is used to monitor and collect data on the production process of each wood structure component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wood structure component; wherein the production process of the wood structure component includes a wood growth stage, a log felling stage, a transportation stage and a processing stage; a stage carbon emission calculation module, for calculating the wood growth carbon sequestration in the wood growth stage, the carbon emission in the log felling stage, the carbon emission in the transportation stage, and the carbon emission in the processing stage of each of the wood structural components according to the wood growth data, the energy consumption data, the material consumption data, and the transportation data; wherein the carbon emission in the transportation stage includes the carbon emission in log transportation, the carbon emission in fossil fuel transportation, the carbon emission in basic material transportation, and the carbon emission in inter-factory transportation of semi-finished products; The wood component carbon emission calculation module is used to add the carbon emissions of the log felling stage, the carbon emissions of the transportation stage and the carbon emissions of the processing stage of each wood structural component, and then subtract the wood growth carbon sequestration in the wood growth stage to obtain the carbon emissions of each wood structural component.

8. A terminal device, characterized in that: It comprises a processor and a memory, wherein a computer program is stored in the memory, and the computer program is configured to be executed by the processor, and when the processor executes the computer program, the method for calculating carbon emissions of a wooden structural member according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein when the device where the computer-readable storage medium is located executes the computer program, the method for calculating carbon emissions of wooden structural members according to any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program or a computer instruction, and when the computer program or the computer instruction is executed by a processor, the method for calculating carbon emissions of a wood structural member according to any one of claims 1 to 6 is implemented.

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