Carbon emission calculation methods, devices, equipment, media and products for wood structural components

Abstract

The present invention discloses a method, device, equipment, medium, and product for calculating carbon emissions from wood structural components. The method comprises: monitoring and collecting data from the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data, and transportation data for each wood structural component; then separately calculating the wood growth carbon sequestration during the wood growth stage, carbon emissions during the log harvesting stage, carbon emissions during the transportation stage, and carbon emissions during the processing stage for each wood structural component; adding the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage, and then subtracting the carbon sequestration during the wood growth stage to obtain the carbon emissions of each wood structural component. The present invention uses a process analysis method to trace all relevant items of carbon emissions from each wood structural component product before it leaves the factory, calculate the carbon emissions of each item item by item, and then cumulatively calculate the carbon emissions of the final wood structural component product, thereby effectively improving the accuracy of carbon emission calculations for wood structural components.

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 emissions of wooden structural components. Background Art

[0002] The construction industry is a significant component of my country's carbon emissions. Carbon emissions from the extraction of building materials, production, transportation, and construction processes caused by the construction industry total 1.6 billion tCO₂e, accounting for 14% of China's total carbon emissions. Wood, due to its carbon storage properties, has a lower lifecycle carbon footprint and is internationally recognized as a low-carbon building material. Building carbon emissions include operational carbon emissions and embodied carbon emissions. The former stems from energy and water consumption during building operations, while the latter is associated with the production, construction, and demolition of building materials. Building material production carbon emissions constitute the majority of embodied carbon emissions. Accurately calculating carbon emissions is a prerequisite for assessing and tracing carbon emissions from building materials and buildings, developing carbon reduction measures, and even future carbon market trading.

[0003] There are two main models for calculating carbon emissions from general products: a "top-down" model based on input-output analysis, and a "bottom-up" model based on process analysis. The former uses the entire system as its boundary and, through input-output information, reflects the physical relationship between energy and material inputs and the carbon emission intensity of the final output. These models also require less data and are highly operational. Existing research on carbon emissions from timber structural products often utilizes input-output analysis, collecting data on a timber structural processing factory's annual consumption of energy sources such as electricity and diesel, as well as materials such as adhesives and paint. This data is then divided by the factory's annual component production to derive the average carbon emissions per cubic meter of timber structural components.

[0004] However, this method has numerous problems. First, the data is unreliable. For example, the collected factory electricity meter data often includes a certain proportion of non-production electricity use. 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 conditions, and cannot help identify carbon emission hotspots during the processing to formulate corresponding carbon reduction measures. Therefore, it can be seen that the current calculation methods of carbon emissions of wood structural components in the construction industry are incomplete and cannot accurately calculate the carbon emissions of wood structural 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 the carbon emissions of wooden structural components. By using a process analysis method, all relevant items of carbon emissions of each wooden component product before leaving the factory are traced, the carbon emissions of each item are calculated item by item, and the final carbon emissions of the wooden component product are cumulatively calculated, thereby effectively improving the accuracy of the carbon emission calculation of wooden structural components.

[0006] To achieve the above objectives, an embodiment of the present invention provides a method for calculating carbon emissions of wooden structural members, comprising:

[0007] 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 for each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log harvesting stage, a transportation stage, and a processing stage;

[0008] Based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data, respectively calculate the wood growth carbon sequestration during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage for each of the wood structural components; wherein the carbon emissions during the transportation stage include carbon emissions from log transportation, carbon emissions from fossil fuel transportation, carbon emissions from basic material transportation, and 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 wood growth carbon sequestration during the wood growth stage.

[0010] As an improvement to the above solution, 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:

[0011]

[0012] Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i 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 to the above 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 projects in the workshop.

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

[0015] Determining 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 emissions of the corresponding processing step;

[0016] Calculate the carbon emissions of each processing step based on 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 each common item in the workshop based on the energy consumption data, carbon emission factor, weight of the wood structural components, and the total weight of the workshop processed components;

[0018] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop shared 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 to the above solution, the method further includes:

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

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

[0022] The carbon emission factor of each wooden structural component, the carbon emission of the wooden structural component, the carbon emission of each stage in the production process of the wooden structural component, 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] An embodiment of the present invention further provides a device for calculating carbon emissions of a wood structural member, comprising:

[0024] a data acquisition module for monitoring and collecting data on the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data, and transportation data for each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log harvesting stage, a transportation stage, and a processing stage;

[0025] a stage carbon emissions calculation module, configured to calculate, for each of the wooden structural components, the wood growth carbon sequestration during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data; wherein the carbon emissions during 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;

[0026] The wood component carbon emission calculation module is used to add the carbon emissions of each wood structural component during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage, and then subtract the wood growth carbon sequestration during 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, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, the method for calculating carbon emissions of wooden structural components described in any one of the above items is implemented.

[0028] An embodiment of the present invention also 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 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 wood structural components provided by the embodiments of the present invention are: by monitoring and collecting data on the production process of each wood structural component, the wood growth data, energy consumption data, material consumption data and transportation data of each wood structural component are obtained; 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; based on the wood growth data, the energy consumption data, the material consumption data and the transportation data, the carbon emissions of each wood structural component are calculated respectively. The carbon sequestration of wood growth during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage of the wood structural component; wherein the carbon emissions during 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 the inter-factory transportation of semi-finished products; after adding the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage of each wood structural component, the carbon sequestration during 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 structural component before it leaves the factory, and includes the carbon sequestration during 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 from fossil fuel transportation, basic material transportation, and the inter-factory transportation of semi-finished products, covering a full range of transportation objects. The processing stage fully traces all processing steps, thereby effectively improving the accuracy of the carbon emission calculation of wood structural components. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a flow chart of a preferred embodiment of a method for calculating carbon emissions of a wood structural 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 This is a schematic diagram of the carbon emission measurement stage in the carbon emission calculation method for wood structural components provided by the present invention;

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

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

[0036] Figure 6 This is a schematic diagram of hierarchical storage of calculation data in a method for calculating carbon emissions of wooden structural components provided by the present invention;

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

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

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall 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 structural member provided by the present invention. The method for calculating carbon emissions of a wood structural member includes:

[0041] S1, monitoring and collecting data on 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 harvesting stage, a transportation stage, and a processing stage;

[0042] S2, based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data, respectively calculating the wood growth carbon sequestration during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage for each of the wood structural components; wherein the carbon emissions during the transportation stage include carbon emissions from log transportation, carbon emissions from fossil fuel transportation, carbon emissions from basic material transportation, and carbon emissions from inter-factory transportation of semi-finished products;

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

[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 production, construction, and demolition activities related to building materials. 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 factors. 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, final accounting materials, etc. 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 quoted. The current carbon emission calculations of wooden structure buildings in my country have the following technical limitations:

[0045] First, there is a lack of basic data on carbon emission factors for wood-structured building materials. Research on building carbon emissions in my country started relatively late, and there is a lack of accumulated basic data. This has caused many inconveniences in calculating carbon emissions in actual projects. Current building carbon emission calculations are based on the national standard GB / T 51366:2019, "Building Carbon Emission Calculation Standard." This standard provides carbon emission factor data entries for 69 building materials in its appendix, but does not include wood. As a result, in practice, calculations of implicit carbon emissions from wood structures can only reference data from Western countries. However, building material carbon emission factors are regional, and carbon emission data for foreign building material production is based on the corresponding national energy structure and building material production technology background. Therefore, their carbon emission experience data cannot be directly transferred to China for use as carbon emission factors for corresponding products.

[0046] Second, existing methods for calculating carbon emissions from building materials are crude, resulting in highly granular data. There are two main models for calculating carbon emissions from general products: a "top-down" model based on input-output analysis, and a "bottom-up" model based on process analysis. The former uses the entire system as its boundary and, through input-output information, reflects the physical relationship between energy and material inputs and the carbon emission intensity of the final output. Furthermore, carbon emission calculations require less data and are highly operational. Existing research on carbon emissions from timber structural products often utilizes input-output analysis, collecting data on a timber structural processing factory's annual consumption of energy sources such as electricity and diesel, as well as materials such as adhesives and paint. This data is then divided by the factory's annual component production to derive average carbon emissions per cubic meter of timber structural components. This method has many problems. First, the data is unreliable. For example, the collected factory electricity meter data often includes a certain proportion of non-production electricity consumption. Second, the data obtained is an average value and 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, 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 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 before leaving the factory includes three parts: 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 aforementioned 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 store carbon during the wood growth stage. Figure 3 , Figure 3This 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. The present invention includes the carbon storage in the wood growth (A0) stage within the measurement boundary for wood components. In addition, the transportation in the A2 stage also includes the items of fossil fuel, basic materials and semi-finished product transportation on the basis of the raw material transportation in ISO 21930. This is in consideration of the energy consumed by wood component factories. Except for electricity and gas, which are transported 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, some processing procedures need to be outsourced, resulting in 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 from timber structural components. This method uses a process analysis-based approach to measure the carbon emissions of timber component products. The method first identifies carbon emission-related items during the pre-production phase of timber component products, measures the carbon emissions of each item, and then accumulates the carbon emissions of the final timber component products. Specifically, data is monitored and collected during the production process of each timber structural component to obtain timber growth data, energy consumption data, material consumption data, and transportation data for each timber structural component. Based on the characteristics of the actors involved in forest product cultivation, timber and timber component processing and transportation, and the specific carbon emission methods, the carbon emission measurement of the timber structural component production process is divided into the timber growth stage A0, the log harvesting stage A1, the transportation stage A2, and the processing stage A3. Then, based on the timber growth data, the carbon sequestration of timber growth is calculated; based on the energy consumption data of the log harvesting stage, the carbon emissions of the log harvesting stage are calculated; based on the transportation data, the carbon emissions of the transportation stage are calculated; and based on the energy consumption data and material consumption data of the processing stage, the carbon emissions of the processing stage are calculated. Finally, the carbon emissions of each wooden structural component during the log harvesting, transportation, and processing stages are added together, and then the carbon sequestration 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 Indicates carbon emissions from log harvesting, in kgCO2e; CE A2 Indicates transportation carbon emissions, in kgCO2e; CE A3Represents carbon emissions from wood component processing, in kgCO2e.

[0052] After calculating the carbon emissions of each wooden structural component, the carbon emission factor of each wooden structural component is calculated based on the carbon emissions of each wooden structural component and the measurement unit of each wooden structural component. The calculation formula is as follows:

[0053]

[0054] Where CEF represents 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 the use of “individual” and “m” according to the application scenario of the carbon emission measurement results. 3 Two units of measurement for carbon emissions from wood component products:

[0056] The unit of measurement is “piece”. To facilitate the labeling of carbon emissions for each wood component, 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 industry products, enterprise output calculation and related carbon emission evaluation and certification standards, it is customary to use cubic meters (m 3 ) calculate the value of timber 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 units of measurement can be converted using the apparent density of wood component products. To simplify the description, the following only uses the unit of measurement for carbon emissions from wood component products.

[0059] The present invention enables the individual carbon emission factor to be assigned to each timber component, distinguishing carbon emission values between different components. Carbon emission values for each component depend on the production process and are affected by the process. Conventional input-output methods cannot achieve this goal. This invention, based on process analysis, proposes a measurement method that uses process data from each component's production stage to distinguish carbon emission differences between 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 during the wood growth stage is:

[0061]

[0062] Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i 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, carbon sequestration during the wood growth (A0) phase reflects the process by which trees store atmospheric CO2 in the form of biomass CH2Os compounds through photosynthesis. The present invention proposes the following method for calculating carbon sequestration during the A0 phase:

[0064]

[0065] Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i 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 wood growth stage into the calculation of carbon emissions of wooden structural components, thereby effectively improving the accuracy of the carbon emission calculation of wooden structural components.

[0068] The carbon emissions during the log harvesting (A1) phase are primarily from the energy consumed by felling machines during the felling of mature trees in the forest, including both fossil energy and electricity. This paper proposes the following method for calculating carbon emissions during the A1 phase:

[0069]

[0070] Where, CE A1 Indicates carbon emissions during the log harvesting stage, 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 kgCO2e / kg, kgCO2e / L or kgCO2e / kWh.

[0071] Among them, E i It can be obtained by calculating the oil gauge or electricity meter of the felling 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, resulting in transportation carbon emissions caused by the travel 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 transported objects include wood, adhesives, preservatives, paints and other basic materials, diesel, gasoline and other fossil energy, 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 Indicates carbon emissions during transportation, 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 type of 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 transport 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 transport. 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 considers the carbon emissions from the transportation of raw materials, but also includes the carbon emissions from the transportation of fossil fuels, basic materials, and semi-finished products between factories, thus covering a comprehensive range of transportation objects. This can effectively improve 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 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 projects 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 carbon emission sources related to the A3 stage of the prefabricated wooden structure components 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 emission 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 the processing in the factory or the carbon emissions from the processing in the outsourced factory, it includes the carbon emissions from the processing procedures and the carbon emissions from the common projects in the workshop.

[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] Determining 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 emissions of the corresponding processing step;

[0081] Calculate the carbon emissions of each processing step based on 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 each common item in the workshop based on the energy consumption data, carbon emission factor, weight of the wood structural components, and the total weight of the workshop processed components;

[0083] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop shared 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 wood component processing (A3), regardless of whether it's done in-house or outsourced, carbon emissions primarily come from two sources. One source is the processing steps for specific components. Typical processing steps are shown in Table 1 below, including sawing, billet processing, component processing, and post-processing. Furthermore, some shared items are used throughout the workshop, primarily gantry trucks and forklifts for intra-plant transportation; shared vacuum systems, lighting systems, and distributed electric fans. Carbon emissions during the A3 stage are generated by the energy and material consumption of these processing steps and shared items.

[0085] Table 1 Typical processes and energy and material consumption during 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, this paper 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 workshop common items 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 process, 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 represents 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 painted area (m2). 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 emissions from the wood component processing process, in 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 of the i-th processing step of the wood component (i.e., activity level data), with the unit being 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 material b 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-type energy, 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 sample 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 cannot assume that only the test object is being produced on the production line. It is necessary to consider the reality that continuous production makes it difficult to separate the data between different components.

[0097] See also Figure 4 , Figure 4 This is a schematic diagram of carbon emissions measurement during a manufacturing process using existing technology. The conventional approach is to track individual components from the moment they enter the workshop to the moment they leave. This is the ideal measurement and accounting method, and tracking the entire process yields the most reliable data. However, it is rarely feasible for the following reasons: 1. Some factory processes are outsourced, making it impossible to track complete data within a single workshop; 2. In actual production, many processes are not processed individually. On assembly lines or in large-scale equipment, many components are processed together in a batch, making it impossible to distinguish between them without stopping production of other components.

[0098] See also Figure 5 , Figure 5 This is a carbon emission measurement diagram of the processing process in the carbon emission calculation method of a wood structure component 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 representation of the process workload - functional unit FU. For example, the FU of gluing is the gluing area (m 2 ); then conduct multiple carbon emission tests on the process to 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 were calculated to obtain the process carbon emission parameters. Then, the carbon emissions of each beam gluing process were calculated based on the glued surface area within the 1m beam and the above beam length data.

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

[0100] Common items in the workshop include: forklifts, which consume diesel and are used to assist in intra-plant transportation; gantry trucks, which consume electricity and are used to assist in intra-plant transportation; vacuum systems, which consume electricity; lighting systems, which consume electricity; and scattered electric fans, which consume electricity. These items consume fossil fuels or electricity, and the total amount that can be measured is allocated to each component according to the following rules:

[0101]

[0102] Where, SCE represents the carbon emissions of workshop shared projects, 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 wooden components, in kg; M represents the total weight of the components processed 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 type a energy, in kgCO2e / kg, kgCO2e / L, or kgCO2e / kWh.

[0103] It should be noted that the energy consumed by machinery shared by these workshops can only be measured in total over a certain period, but cannot be directly measured at the granularity of individual components. Therefore, the allocation plan for this data will be evaluated in reference to relevant regulations.

[0104] For example, for forklift transportation, the national standard "Building Carbon Emission Calculation Standard" GB / T 51366-2019 states that carbon emissions from building material transportation are the product of the weight of the building materials, the transportation distance, and the carbon emission factor of the transportation method. This means that under certain conditions of transportation tools and distances, transportation carbon emissions are directly proportional to the weight of the 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 over a certain period of time, and then allocated to the components according to the accounting rules. Assuming that all components travel the same distance from entering the factory, passing through the assembly line, and finally leaving the factory, then referring to the accounting method for carbon emissions from building material transportation, it is assumed that the fuel consumption of component transportation is directly 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 workers' thermal comfort needs 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 actual factories 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 various wood structure factories in practice, such as the scale and type of machinery. Some factories have complete processing procedures, while others may have some processes outsourced. For the latter, carbon emissions measurement cannot be carried out only in the factory itself; the data of the outsourced processes should also be traced back, otherwise it will be impossible to obtain complete carbon emissions data. 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 emissions data measurement of wood component products.

[0109] It should be noted that in the above formula, the carbon emission factor for fossil fuels should be determined according to Appendix A, "Carbon Emission Factors for Primary Energy," of the current national standard, GB / T 51366, "Building Carbon Emission Calculation Standard." The carbon emission factor for electricity should preferably use the latest provincial average carbon emission factor for electricity published by the local administrative department. If provincial data is unavailable, the latest regional average carbon emission factor for electricity published by the Ministry of Ecology and Environment may be used. If regional data is unavailable, the latest national average carbon emission factor for electricity published by the Ministry of Ecology and Environment may be used. The carbon emission factor for transportation should preferably use third-party-verified building material carbon footprint data. If this data is unavailable, the reference value in Appendix E of GB / T 51366-2019 may be used. The carbon emission factor for basic materials should preferably use third-party-verified building material carbon footprint data. If this data is unavailable, an updated carbon emission database may be used.

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

[0111] The carbon emission factor of each wooden structural component, the carbon emission of the wooden structural component, the carbon emission of each stage in the production process of the wooden structural component, 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 This is a schematic diagram of the hierarchical storage of calculation data in a method for calculating carbon emissions of wood structural components provided by the present invention. Figure 6 The carbon emission factor (CEF) and total carbon emission (CE A0-A3 ), carbon emissions sub-item (CE A0 To CE A3), and the process analysis (PA) list. Each layer is linked through the corresponding formulas above and ultimately connected to the PA list. The PA list consists of data on energy and material consumption and corresponding carbon emission factors.

[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, and the processing is entrusted to Factory B. Factory B needs more PAD to complete the 1FU process. e,a In this case, the metering scheme proposed by the present invention allows data to be updated for this process alone to obtain CEF data of wood component A that represents the actual situation, without the need to fully measure wood component A 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 the carbon emission factors of energy and basic materials. 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 can be updated without the need 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 The figure is a schematic diagram of a preferred embodiment of a carbon emission calculation device for a wood structural member provided by the present invention. The carbon emission calculation device for a wood structural member comprises:

[0116] The data collection module 701 is used to monitor and collect data on 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 harvesting 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 emissions in the log harvesting stage, the carbon emissions in the transportation stage, and the carbon emissions in the processing stage for each of the wood structural components based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data; 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;

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

[0120]

[0121] Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i 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 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.

[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] Determining 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 emissions of the corresponding processing step;

[0125] Calculate the carbon emissions of each processing step based on 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 each common item in the workshop based on the energy consumption data, carbon emission factor, weight of the wood structural components, and the total weight of the workshop processed components;

[0127] The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop shared 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 wooden structural component according to the carbon emission of each wooden structural component and the measurement unit of each wooden structural component.

[0130] Preferably, the device further comprises:

[0131] A data storage module is used to store in layers the carbon emission factor of each wooden structural component, the carbon emissions of the wooden structural component, the carbon emissions of each stage in the production process of the wooden structural component, 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 effects achieved by the carbon emission calculation device for wooden structural components provided by 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, it implements the method for calculating carbon emissions of wooden structural members described in any of the above embodiments.

[0134] Preferably, the computer program can be divided into one or more modules / units (e.g., computer program 1, computer program 2, ...), which are stored in the memory 802 and executed by the processor 801 to implement the present invention. The one or more modules / units can be a series of computer program instruction segments capable of implementing 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 uses various interfaces and lines to connect the various parts of the terminal device.

[0136] The memory 802 mainly includes a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function, and the data storage area can store related data. 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 Media Card (SMC), a Secure Digital (SD) card, and a Flash Card. Alternatively, the memory 802 can be other volatile solid-state memory 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 on the above-mentioned terminal device. It may include more or fewer components than shown in the figure, or combine certain components, or different components.

[0138] An embodiment of the present invention also 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 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] An embodiment of the present invention provides a method, device, equipment, medium and product for calculating carbon emissions of wooden structural components. Data is monitored and collected during the production process of each wooden structural component to obtain wood growth data, energy consumption data, material consumption data and transportation data of each wooden structural component. The production process of the wooden structural component includes a wood growth stage, a log harvesting stage, a transportation stage and a processing stage. Based on 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 harvesting stage, the carbon emissions in the transportation stage and the carbon emissions in the processing stage are calculated for each wooden structural component respectively. The carbon emissions in the transportation stage include carbon emissions from log transportation, carbon emissions from fossil fuel transportation, carbon emissions from basic material transportation and carbon emissions from inter-factory transportation of semi-finished products. The carbon emissions in the log harvesting stage, the transportation stage and the processing stage of each wooden structural component are added together and then subtracted from the wood growth carbon sequestration in the wood growth stage to obtain the carbon emissions of each wooden structural component. The embodiment of the present invention adopts a process analysis method to trace all relevant items of carbon emissions of each wooden component product before leaving the factory, and incorporates the carbon sequestration during 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 the 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 separate, 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 across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present 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 can be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art can understand and implement the present invention without inventive work.

[0142] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles 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 wooden structural components, characterized in that: include: 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 for each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log harvesting stage, a transportation stage, and a processing stage; Based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data, respectively calculate the wood growth carbon sequestration during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage for each of the wood structural components; wherein the carbon emissions during the transportation stage include carbon emissions from log transportation, carbon emissions from fossil fuel transportation, carbon emissions from basic material transportation, and 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 the wood during the wood growth stage; Wherein, 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 during the wood growth stage is: Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the molecular weight ratio of carbon dioxide to carbon; The carbon emissions during the processing stage include the carbon emissions from processing in the factory and the carbon emissions from processing in outsourced factories, and both the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factories include the carbon emissions from the processing steps and the carbon emissions from the workshop’s shared projects; The calculation method for carbon emissions from processing in the factory or the outsourced factory is as follows: Determining 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 emissions of the corresponding processing step; Calculate the carbon emissions of each processing step based on 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 each common item in the workshop based on the energy consumption data, carbon emission factor, weight of the wood structural components, and the total weight of the workshop processed components; The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop shared 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.

2. The method for calculating carbon emissions of wooden structural members according to claim 1, wherein: The method further comprises: The carbon emission factor of each wood structural component is calculated according to the carbon emission of each wood structural component and the measurement unit of each wood structural component.

3. The method for calculating carbon emissions of wooden structural members according to claim 2, wherein: The method further comprises: The carbon emission factor of each wooden structural component, the carbon emission of the wooden structural component, the carbon emission of each stage in the production process of the wooden structural component, 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.

4. A device for calculating carbon emissions of wooden structural members, characterized in that: include: a data acquisition module for monitoring and collecting data on the production process of each wood structural component to obtain wood growth data, energy consumption data, material consumption data, and transportation data for each wood structural component; wherein the production process of the wood structural component includes a wood growth stage, a log harvesting stage, a transportation stage, and a processing stage; a stage carbon emissions calculation module, configured to calculate, for each of the wooden structural components, the wood growth carbon sequestration during the wood growth stage, the carbon emissions during the log harvesting stage, the carbon emissions during the transportation stage, and the carbon emissions during the processing stage based on the wood growth data, the energy consumption data, the material consumption data, and the transportation data; wherein the carbon emissions during 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; a wood component carbon emission calculation module, configured to calculate the carbon emissions of each wood structural component 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 wood growth carbon sequestration during the wood growth stage; Wherein, 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 during the wood growth stage is: Where, CE A0 Indicates carbon sequestration during wood growth, unit is kgCO2e; M r,i represents the dry mass of the i-th type of wood, in kg; C i represents the carbon content of the i-th type of wood, in %; 44 / 12 represents the molecular weight ratio of carbon dioxide to carbon; The carbon emissions during the processing stage include the carbon emissions from processing in the factory and the carbon emissions from processing in outsourced factories, and both the carbon emissions from processing in the factory and the carbon emissions from processing in the outsourced factories include the carbon emissions from the processing steps and the carbon emissions from the workshop’s shared projects; The calculation method for carbon emissions from processing in the factory or the outsourced factory is as follows: Determining 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 emissions of the corresponding processing step; Calculate the carbon emissions of each processing step based on 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 each common item in the workshop based on the energy consumption data, carbon emission factor, weight of the wood structural components, and the total weight of the workshop processed components; The carbon emissions of the wood structural component processing process and the carbon emissions of the workshop shared 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. A terminal device, characterized in that: The method comprises a processor and a memory, wherein a computer program is stored in the memory and configured to be executed by the processor, and wherein the method for calculating carbon emissions of a wooden structural member according to any one of claims 1 to 3 is implemented when the processor executes the computer program.

6. 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 3 is implemented.

7. A computer program product, characterized in that The computer program product includes a computer program or computer instructions, and when the computer program or the computer instructions are executed by a processor, the method for calculating carbon emissions of wooden structural members according to any one of claims 1 to 3 is implemented.

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