Carbon emission calculation method

Abstract

The invention discloses a carbon emission calculation method. The method comprises the following steps: acquiring carbon emission of energy in a construction stage of an industrial building, carbon emission of construction water and drainage in the construction stage, carbon emission of measure items in the construction stage, carbon emission of construction waste in the construction stage, carbon emission of temporary facilities in the construction stage and carbon emission of construction transportation in the construction stage; the carbon emission in the building construction equipment mounting and dismounting process, the carbon emission in the building construction combustion process, the carbon emission in the building construction non-combustion consumption process and the carbon emission reduction amount of renewable energy source utilization in the building construction stage are calculated to obtain the carbon emission; the problem that calculation accuracy is not high due to the fact that calculation of emission in the combustion process and calculation of carbon emission in the non-combustion process are lacked in calculation of carbon emission generated by an enterprise at present is solved.

Description

Technical Field

[0001] The present invention relates to the photovoltaic field, and in particular to a carbon emission calculation method. Background Art

[0002] In September 2020, China proposed at the United Nations General Assembly that my country "strives to peak carbon dioxide emissions before 2030 and strives to achieve carbon neutrality before 2060". The realization of the dual carbon goals requires enterprises to take a series of measures, including improving energy efficiency, optimizing energy structure, reducing carbon emission intensity, and promoting low-carbon technologies. Enterprises need to formulate specific emission reduction targets, take practical measures, strengthen carbon emission monitoring and reporting, actively participate in international climate cooperation, continuously improve carbon management, and contribute to the realization of dual carbon goals. At present, the calculation of carbon emissions generated by enterprises lacks the calculation of emissions in the combustion process and carbon emissions in the non-combustion process, resulting in low calculation accuracy. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon emission calculation method to solve the problem of low accuracy in calculating the carbon emissions generated by enterprises.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] Provide a carbon emission calculation method, including:

[0006] Obtain the carbon emissions Cgj1 of the energy used in the construction phase of the steel structure industrial building;

[0007] Obtain the carbon emissions Cgj2 of water and drainage used in the construction phase of steel structure industrial buildings;

[0008] Obtain the carbon emissions Cgj3 of the steel structure industrial building construction phase measure project;

[0009] Obtain the carbon emission Cgj4 of construction waste during the construction phase of steel structure industrial buildings;

[0010] Obtain the carbon emissions Cgj5 of temporary facilities during the construction phase of steel structure industrial buildings;

[0011] Obtain the carbon emissions of construction and transportation during the construction phase of steel structure industrial buildings Cgj6;

[0012] Obtain the carbon emissions during the installation and disassembly of steel structure industrial building construction equipment Cgj7;

[0013] Obtain the carbon emission Cgj8 of the combustion process in the construction of steel structure industrial buildings;

[0014] Obtain the carbon emissions Cgj9 of the non-combustion consumption process in the construction of steel structure industrial buildings;

[0015] Obtain the carbon emission reduction Cgj10 of renewable energy utilization during the construction phase of steel structure industrial buildings;

[0016] The carbon emissions per unit area of ​​steel structure industrial buildings during the construction phase are calculated according to the following formula:

[0017] C gj =(C gj1 +C gj2 +C gj3 +C gj4 +C gj5 +C gj6 +C gj7 +C gj8 +C gj9 -C gj10 )

[0018] Preferably, the carbon emission amount Cgj8 of the combustion process of the steel structure industrial building construction is obtained.

[0019] include:

[0020] Obtain the carbon emissions C of the steel structure industrial building construction material consumption production stage sx ;

[0021] Obtain the carbon emissions C of the steel structure industrial building construction material consumption and transportation stage yx ;

[0022] Obtain the carbon emissions C during the construction and installation of steel structure industrial buildings gc ;

[0023] The Cgj8 is calculated according to the following formula:

[0024] C gj8 =(C sx +C yx +C gc )

[0025] Preferably, the carbon emissions C during the construction and installation of the steel structure industrial building are obtained. gc ,include:

[0026] Get the activity level data AD of the kth construction process k ;

[0027] Get the carbon emission factor PF of the kth construction process k ;

[0028] The C is calculated according to the following formula gc :

[0029]

[0030] Preferably, the carbon emission factor PF of the kth construction process is obtained k include:

[0031] Determine the required materials and emission sources involved based on the requirements of the construction process;

[0032] Determine the PF according to the ratio and content of the emission source k .

[0033] Preferably, the k-th type of construction process activity level data AD is obtained k include:

[0034] Determined according to the engineering quota or according to the construction organization design or purchase list.

[0035] Preferably, the PF is determined according to the ratio and content of the emission source. k include:

[0036] Determine preliminary emission factors based on the proportion and content of the emission sources described;

[0037] The preliminary emission factor is obtained after data filling, data standardization format processing and data quality processing. k .

[0038] Preferably, the activity level data is acquired through data monitoring, preprocessing and screening.

[0039] Preferably, obtaining the carbon emissions Cgj9 of the non-combustion consumption process of the steel structure industrial building construction includes:

[0040] Obtain the carbon emissions C of the steel structure industrial building construction material consumption production stage sx ;

[0041] Obtain the carbon emissions C of the transportation of steel structure industrial building construction materials during the consumption stage yx ;

[0042] Obtain the carbon emissions C of recycled materials consumed in steel structure industrial building construction hx ;

[0043] The Cgj9 is calculated according to the following formula:

[0044] C gj9 =(C sx +C yx -C hx )

[0045] Preferably, the carbon emissions C of the steel structure industrial building construction material consumption production stage are obtained. sx ,include:

[0046] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ;

[0047] Get the carbon emission factor F of the materials consumed in the construction of the i-th steel structure industrial building i ;

[0048] The C is calculated according to the following formula sx :

[0049]

[0050] Preferably, the carbon emissions C of the steel structure industrial building construction material consumption stage transportation are obtained. yx ,include:

[0051] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ;

[0052] Get the transportation distance D of the consumable materials for the construction of the i-th steel structure industrial building i ;

[0053] Obtain the carbon emission factor T per unit weight and transportation distance under the transportation mode of the i-th steel structure industrial building construction consumable material i ;

[0054] The C is calculated according to the following formula yx :

[0055]

[0056] Preferably, the carbon emission C of the recycled materials consumed in the construction of steel structure industrial buildings is obtained. hx ,include:

[0057] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ;

[0058] Obtain the carbon emission factor DF of the recyclable materials after processing the consumed materials in the construction of the i-th type of steel structure industrial building i ;

[0059] Get the recyclable proportion η of the i-th type of steel structure industrial building construction consumable materials i ;

[0060] The C is calculated according to the following formula hx :

[0061]

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] A method for calculating carbon emissions from process emissions and material consumption during the construction phase of prefabricated steel structure industrial buildings is provided. It solves the problem of the lack of calculation methods for carbon emissions from combustion processes and non-combustion processes in existing buildings, improves the calculation method for carbon emissions during the construction phase, and improves the accuracy of carbon emission calculations. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0065] Figure 1 It is a schematic diagram of the overall process of the present invention. DETAILED DESCRIPTION

[0066] The following will be combined with the accompanying drawings of the present invention to clearly and completely describe the technical solutions in multiple 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.

[0067] the term

[0068] Activity level data: quantitative data reflecting greenhouse gas emissions caused by human activities. For building carbon emissions, it mainly includes the consumption of materials, energy and resources.

[0069] Carbon emission factor: A coefficient that corresponds activity data to carbon emissions, used to quantify carbon emissions per unit of activity data.

[0070] Construction project quota: refers to the quantity standard of labor, materials, machinery and equipment hours and management expenses consumed to complete a unit of qualified construction products under normal production conditions.

[0071] Example

[0072] like Figure 1 As shown, this embodiment provides a carbon emission calculation method, including:

[0073] Obtain the carbon emissions of energy during the construction phase of steel structure industrial buildings Cgj1; obtain the carbon emissions of water and drainage during the construction phase of steel structure industrial buildings Cgj2; obtain the carbon emissions of measures during the construction phase of steel structure industrial buildings Cgj3; obtain the carbon emissions of construction waste during the construction phase of steel structure industrial buildings Cgj4; obtain the carbon emissions of temporary facilities during the construction phase of steel structure industrial buildings Cgj5; obtain the carbon emissions of construction transportation during the construction phase of steel structure industrial buildings Cgj6; obtain the carbon emissions during the installation and disassembly process of construction equipment for steel structure industrial buildings Cgj7; obtain the carbon emissions during the combustion process of steel structure industrial buildings Cgj8; obtain the carbon emissions during the non-combustion consumption process of steel structure industrial buildings Cgj9; obtain the carbon emission reduction amount Cgj10 of renewable energy utilization during the construction phase of steel structure industrial buildings, and calculate the carbon emissions per unit building area during the construction phase of steel structure industrial buildings according to the following formula:

[0074] C gj =(C gj1 +C gj2 +C gj3 +C gj4 +C gj5 +C gj6 +C gj7 +C gj8 +C gj9 -C gj10 )

[0075] In one embodiment, obtaining the carbon emission Cgj8 during the combustion process of the steel structure industrial building construction includes:

[0076] Obtain the carbon emissions C of the steel structure industrial building construction material consumption production stage sx ;

[0077] Obtain the carbon emissions C of the steel structure industrial building construction material consumption and transportation stage yx ;

[0078] Obtain the carbon emissions C during the construction and installation of steel structure industrial buildings gc ;

[0079] The Cgj8 is calculated according to the following formula:

[0080] C gj8 =(C sx +C yx +C gc )

[0081] In one embodiment, the carbon emission C of the steel structure industrial building construction and installation process is obtained. gc ,include:

[0082] Get the activity level data AD of the kth construction process k ;

[0083] Get the carbon emission factor PF of the kth construction process k ;

[0084] The Cgc is calculated according to the following formula:

[0085]

[0086] Obtaining the carbon emission factor PF of the kth construction process k Including any of the following methods: 1. Determined based on database data; 2. Determined based on the proportion and content of emission sources; 3. Determined based on chemical equations.

[0087] Determined based on database data:

[0088] The inventor determines the carbon emission factor based on the dual-carbon database established by itself.

[0089] The carbon emission factors of the production stage stored in the dual carbon database are calculated as follows:

[0090] F i =(C sc,i +C ys, i) / M i

[0091] Among them, Fi is the carbon emission factor of materials consumed in the construction of the i-th steel structure industrial building; Csc,i is the carbon emission from the mining of raw materials consumed in the construction of the i-th steel structure industrial building; Cys,i is the carbon emission from the transportation of raw materials consumed in the construction of the i-th steel structure industrial building; Mi is the amount of materials consumed in the construction of the i-th steel structure industrial building.

[0092] Determined according to the proportion and content of emission sources:

[0093] Determine the required materials and the emission sources involved according to the needs of the construction process. Different steel structure projects use different construction processes. In the early stage of calculating the carbon emissions from the combustion process of steel structure industrial building construction, the construction process used by the project must be determined. For example, the combustion process of steel structure industrial building construction mainly involves the carbon emissions generated by welding and cutting during the installation of steel structures. Determine the required materials and the emission sources involved according to the needs of the construction process. For example, it is found that there are process carbon emission sources in the combustion process of steel structure construction, such as welding rods, self-shielded flux-cored welding wires, welding slag, 100% CO2-shielded flux-cored welding wires ￠1.6, 100% CO2-shielded solid welding wires ￠1.2, acetylene, oxygen, calcium carbide, etc. It is determined according to the content ratio of each material used in the emission source. For example, in the process of heating and melting carbon, there is incomplete combustion of carbon. By monitoring the proportion of carbon monoxide produced by incomplete combustion in the exhaust gas, the carbon dioxide content produced by carbon as a fuel is determined, and the oxidation rate of carbon converted to carbon dioxide is obtained. The calculation formula for the combustion emission factor of carbon is as follows:

[0094]

[0095] Where:

[0096] HV—lower heating value of carbon fuel, unit is (TJ / t);

[0097] CPH—Carbon content per unit calorific value of carbon fuel, in units of (tC / TJ);

[0098] OF—carbon oxidation rate of carbon fuel (%);

[0099] —Carbon dioxide reduction factor.

[0100] The lower calorific value of carbon is obtained through the carbon block test report. In summary, the carbon emission factor of carbon under the process of this project is 1.64kgCO2e / kg.

[0101] Determined from the chemical equation:

[0102] Acetylene, oxygen, etc. are needed during the construction phase of steel structures. If these materials do not have relevant carbon emission factors, they can be calculated and determined based on chemical equations. For example, acetylene is needed in the welding and cutting process of steel components. Acetylene is used together with oxygen to weld metal and cut steel. The chemical equation for acetylene combustion is:

[0103] 2C2H2+5O2→4CO2+2H2O

[0104] According to the molar coefficient of each component, the complete combustion of 52g / mol of acetylene corresponds to the production of 176g / mol of carbon dioxide. Based on the molar ratio, it can be calculated that the complete combustion of 1kg of acetylene produces 3.3846kg of carbon dioxide. Therefore, the carbon emission factor of acetylene calculated according to the chemical equation is 3.3846kgCO2e / kg.

[0105] After obtaining the preliminary carbon emission factor through any of the above three methods, the preliminary emission factor is processed through data filling, data standardization format processing and data quality processing to obtain the PF k .

[0106] The specific steps are as follows:

[0107] 1. The preliminary carbon emission factors need to be processed by data filling. Based on the actual situation of the project, there are missing data on the carbon emission factors of some products or activities. For the missing data, relevant benchmark data can be selected from the dual-carbon database to supplement them.

[0108] 2. The carbon emission factor data output from the above steps needs to be processed in a standardized format. The units of the carbon emission factors currently published are different for different product units, such as kgCO2e / t, kgCO2e / m 3 ,tCO2e / m 2 In actual calculations, it is difficult to use due to differences in the acquisition of activity data units, which can easily lead to errors in carbon emission calculations. In the standardized format processing stage, the carbon emission factors involved in the material consumption stage of construction are converted into kgCO2e / t, so as to facilitate calculations in actual projects in combination with activity level data.

[0109] 3. Conduct data quality assessment on the carbon emission factor data output from the above steps, and conduct data sensitivity analysis and review on the calculated carbon emission factors provided by the manufacturer and the data in the dual carbon database. When the sensitivity deviation between the provided data and the benchmark level of similar products in the database is 10%, the data should be re-verified and evaluated to ensure data quality.

[0110] In one embodiment, the k-th type of construction process activity level data AD is obtained. k include:

[0111] Determined according to the engineering quota or according to the construction organization design or purchase list.

[0112] Determined according to the project quota:

[0113] During the building design and construction phase, a budget for building carbon emissions is made, and the project quotas can be queried to determine activity level data.

[0114] Determined according to the construction organization design or purchase list:

[0115] After the project is completed and put into operation, the building carbon emissions can be verified by querying the construction organization design or purchase list to determine the activity level data.

[0116] The activity level data AD is determined by the engineering quota or according to the construction organization design or purchase list. k Finally, the activity level data is monitored, preprocessed and screened as follows:

[0117] During the data monitoring stage, monthly construction site entry and exit orders are required. For example, direct emission data needs to be manually reported by filling in monthly earthwork volume, concrete pumping volume, monthly material consumption, etc. to ensure the accuracy of activity level data.

[0118] In the data preprocessing stage, the acquired data needs to be cleaned. The patent of this invention chooses to use data sensitivity analysis and audit methods as the main abnormal data identification methods. The unit area activity level data of various products or activities in the actual construction project are analyzed, and the deviation value of the unit area activity level data of various products or activities in the actual construction project is calculated based on the unit area activity data of the actual project in the database.

[0119] During the data screening stage, data that is 10% higher than the database benchmark level in the preprocessing stage will be recalculated and reviewed.

[0120] In one embodiment, the carbon emissions C of the steel structure industrial building construction material consumption production stage are obtained. sx ,include:

[0121] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ;

[0122] Get the carbon emission factor F of the materials consumed in the construction of the i-th steel structure industrial building ig ;

[0123] The C is calculated according to the following formula sx :

[0124]

[0125] In one embodiment, the carbon emissions C of the steel structure industrial building construction material consumption and transportation stage are obtained. yx ,include:

[0126] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ;

[0127] Get the transportation distance D of the consumable materials for the construction of the i-th steel structure industrial building i ;

[0128] Obtain the carbon emission factor T per unit weight and transportation distance under the transportation mode of the i-th steel structure industrial building construction consumable material i ;

[0129] The C is calculated according to the following formula yx :

[0130]

[0131] The carbon emissions from the combustion process during the construction phase are direct emissions, which will have an impact on the carbon environment of the construction site. The accuracy of the carbon emission calculation during the construction phase of the building can be ensured by monitoring the environment of the construction site. Install an outdoor carbon emission detector at the construction site through the tower array-advection monitoring method, and obtain the carbon flux data of the construction site through monitoring data. Ensure the accuracy of the carbon emission calculation during the construction process.

[0132] Different steel structure projects use different construction techniques, resulting in different on-site construction conditions. Different construction conditions correspond to differences in the types and quantities of construction consumables required for the project. Determine the emission sources involved based on the construction conditions of the specific project. For example, in the construction process of prefabricated steel structure workshops, there are carbon emission sources of construction consumables, including welding rods: welding rods, welding slag, self-shielded flux-cored welding wire, 100% CO2-shielded flux-cored welding wire ￠1.6, 100% CO2-shielded solid welding wire ￠1.2, acetylene, oxygen, calcium carbide, gasoline, diesel, solvent gasoline, iron wire, iron rivets, round nails, self-tapping screws, steel sleeves, polyethylene films, drill bits, cutting discs, saw blades, grinding wheels, adhesives, engine oil, clear oil, cooked tung oil, solvent oil, isolation agents, and demolding agents. These materials are all lost during the project construction process and should be included in the calculation of carbon emissions from construction consumables.

[0133] For the emission sources determined in the above steps, the same emission sources will cause different carbon dioxide emissions due to different uses during the construction process. Different uses determine the differences in the life cycle of the calculation stage. For example, the carbon dioxide produced when gasoline is burned is different from the carbon dioxide produced when gasoline is used as a lubricant.

[0134] Distinguish the emission factors of combustible materials: The emission factors of welding rods, welding slag, self-shielded flux-cored welding wire, 100% CO2 shielded flux-cored welding wire ￠1.6, 100% CO2 shielded solid welding wire ￠1.2, acetylene, oxygen, calcium carbide, gasoline, diesel, and solvent gasoline cannot be taken from traditional combustion, but should be taken from the mining and transportation values ​​of the material.

[0135] Table 1 Carbon emission factors of non-combustion materials

[0136]

[0137]

[0138] Other materials: iron wire, iron rivets, round nails, self-tapping screws, steel sleeves, polyethylene film, drill bits, cutting discs, saw blades, grinding wheels, adhesives, engine oil, clear oil, tung oil, solvent oil, isolation agent, and demolding agent. Emission factors are obtained based on enterprise verification or data verification.

[0139] In one embodiment, obtaining carbon emissions Cgj9 during the non-combustion consumption process of steel structure industrial building construction includes:

[0140] Obtain the carbon emissions C of the production stage of the non-combustion consumption process of steel structure industrial building construction sx ; Obtain the carbon emissions C of the transportation during the non-combustion consumption process of steel structure industrial building construction yx ; Obtain the carbon emissions C of recycled materials consumed in steel structure industrial building construction hx ; The Cgj9 is calculated according to the following formula:

[0141] C gj9 =(C sx +C yx -C hx )

[0142] In one embodiment, the carbon emission amount C of the production stage of the non-combustion consumption process of the steel structure industrial building construction is obtained. sx ,include:

[0143] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i ; Obtain the carbon emission factor F of the materials consumed in the construction of the i-th steel structure industrial building i ; Calculate the C according to the following formula sx :

[0144]

[0145] where F i The method of obtaining the carbon emission factor is similar to that of obtaining the carbon emission factor from the combustion process, so it will not be repeated here.

[0146] In one embodiment, the carbon emissions C of the transportation of the non-combustion consumption process of the steel structure industrial building construction are obtained. yx ,include:

[0147] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i , obtain the transportation distance D of the consumable materials for the construction of the i-th steel structure industrial building i , obtain the carbon emission factor T per unit weight and transportation distance under the transportation mode of the i-th steel structure industrial building construction consumable materials i , the C is calculated according to the following formulayx :

[0148]

[0149] The carbon emission factor per unit weight and transportation distance is T i Determined based on the transportation carbon emission factors in different provinces.

[0150] In one embodiment, the carbon emissions C of recycled materials consumed in steel structure industrial building construction are obtained. hx ,include:

[0151] Get the amount of material consumed in the construction of the i-th steel structure industrial building M i , obtain the carbon emission factor DF of the reusable materials after the consumption materials are processed in the construction of the i-th type of steel structure industrial building i , obtain the recyclable proportion η of the materials consumed in the construction of the i-th type of steel structure industrial building i , the C is calculated according to the following formula hx :

[0152]

[0153] Carbon emission factor DF in the recycling stage of materials consumed in steel structure industrial building construction i The carbon emission factor of the recycled material and the recycling rate of the consumed materials are determined.

[0154] The applicant has made a calculation comparison between the missing combustion process emissions and the non-combustion process and the method of this application, as shown in Table 2:

[0155] Table 2 Comparative analysis

[0156]

[0157] From the above data, it can be seen that the deviation between the carbon emissions including the construction combustion process and the construction non-combustion process and the actual monitored carbon emissions is smaller than that without the construction combustion process and the construction non-combustion process, and is closer to the actual monitored carbon emissions. This shows that the calculation method of this application that adds combustion process emissions and non-combustion processes has higher accuracy for the calculated carbon emissions.

[0158] For the methods of obtaining Cgj1, Cgj2, Cgj3, Cgj4, Cgj5, Cgj6, Cgj7, and Cgj10 of this application, please refer to TCSTM00994-2024 "Calculation Standard and Analysis Method for Carbon Emissions of Industrial Buildings", link: https: / / www.ttbz.org.cn / StandardManage / Detail / 106651

[0159] The present invention provides a method for calculating carbon emissions during the construction phase of prefabricated steel structure industrial buildings and material consumption. It solves the problem of the lack of calculation methods for emissions during the combustion process and non-combustion process in existing buildings, and improves the calculation method for carbon emissions during the construction phase. At the same time, it plays the following roles in carbon emissions during the construction phase:

[0160] Propose directions for the algorithm to convert process emissions to indirect emissions, that is, to convert combustion emissions to power emissions.

[0161] To solve the problem of saving construction consumables during the construction phase, we should give priority to proposing a theoretical basis and reducing the carbon emissions of construction consumables during the construction phase, that is, optimizing construction measures and proposing algorithms to reduce construction consumables.

[0162] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0163] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbon emission calculation method, characterized in that: include: Obtain the carbon emissions Cgj1 of the energy used in the construction phase of the steel structure industrial building; Obtain the carbon emissions Cgj2 of water and drainage used in the construction phase of steel structure industrial buildings; Obtain the carbon emissions Cgj3 of the steel structure industrial building construction phase measure project; Obtain the carbon emission Cgj4 of construction waste during the construction phase of steel structure industrial buildings; Obtain the carbon emissions Cgj5 of temporary facilities during the construction phase of steel structure industrial buildings; Obtain the carbon emissions of construction and transportation during the construction phase of steel structure industrial buildings Cgj6; Obtain the carbon emissions during the installation and disassembly of steel structure industrial building construction equipment Cgj7; Obtain the carbon emission Cgj8 of the combustion process in the construction of steel structure industrial buildings; Obtain the carbon emissions Cgj9 of the non-combustion consumption process in the construction of steel structure industrial buildings; Obtain the carbon emission reduction Cgj10 of renewable energy utilization during the construction phase of steel structure industrial buildings; The carbon emissions per unit area of ​​steel structure industrial buildings during the construction phase are calculated according to the following formula: C gj =(C gj1 +C gj2 +C gj3 +C gj4 +C gj5 +C gj6 +C gj7 +C gj8 +C gj9 -C gj10 )。 2. The calculation method according to claim 1, characterized in that: The method of obtaining the carbon emission Cgj8 during the combustion process of the steel structure industrial building construction includes: Obtain the carbon emissions C of the steel structure industrial building construction material consumption production stage sx ; Obtain the carbon emissions C of the steel structure industrial building construction material consumption and transportation stage yx ; Obtain the carbon emissions C during the construction and installation of steel structure industrial buildings gc ; The Cgj8 is calculated according to the following formula: C gj8 =(C sx +C yx +C gc )。 3. The calculation method according to claim 2, characterized in that: The carbon emissions C of the steel structure industrial building construction and installation process are obtained gc ,include: Get the k-th construction process activity level data AD k ; Get the carbon emission factor PF of the kth construction process k ; The C is calculated according to the following formula gc :

4. The calculation method according to claim 3, characterized in that: Obtaining the carbon emission factor PF of the kth construction process k include: Determine the required materials and emission sources involved based on the requirements of the construction process; Determine the PF according to the ratio and content of the emission source k .

5. The calculation method according to claim 4, characterized in that: The PF is determined according to the ratio and content of the emission source. k include: Determine preliminary emission factors based on the proportion and content of the emission sources described; The preliminary emission factor is obtained after data filling, data standardization format processing and data quality processing. k .

6. The calculation method according to claim 3, characterized in that: During the activity level data acquisition process, the data is monitored, preprocessed and screened.

7. The calculation method according to claim 1, characterized in that: Obtain the carbon emissions Cgj9 of the non-combustion consumption process of steel structure industrial building construction, including: Obtain the carbon emissions C of the steel structure industrial building construction material consumption production stage sx ; Obtain the carbon emissions C of the transportation of steel structure industrial building construction materials during the consumption stage yx ; Obtain the carbon emissions C of recycled materials consumed in steel structure industrial building construction hx ; The Cgj9 is calculated according to the following formula: C gj9 =(C sx +C yx -C hx )。 8. The calculation method according to claim 7, characterized in that: The carbon emissions C of the steel structure industrial building construction material consumption production stage are obtained sx ,include: Get the material consumption M of the i-th steel structure industrial building construction i ; Get the carbon emission factor F of the materials consumed in the construction of the i-th steel structure industrial building i ; The C is calculated according to the following formula sx :

9. The calculation method according to claim 7, characterized in that: The carbon emissions C of the transportation of steel structure industrial building construction materials during the consumption stage are obtained. yx ,include: Get the material consumption M of the i-th steel structure industrial building construction i ; Get the transportation distance D of the consumable materials for the construction of the i-th steel structure industrial building i ; Obtain the carbon emission factor T per unit weight and transportation distance under the transportation mode of the i-th steel structure industrial building construction consumable material i ; The C is calculated according to the following formula yx :

10. The calculation method according to claim 7, characterized in that: The carbon emission C of recycling materials consumed in steel structure industrial construction is obtained hx ,include: Get the material consumption M of the i-th steel structure industrial building construction i ; Obtain the carbon emission factor DF of the recyclable materials after processing the consumed materials in the construction of the i-th type of steel structure industrial building i ; Get the recyclable proportion η of the i-th type of steel structure industrial building construction consumable materials i ; The C is calculated according to the following formula hx :

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