| Climate change is an important challenge facing the world today.At the 75 th session of the United Nations General Assembly,China put forward the goal of "striving to reach the peak of carbon dioxide emissions by 2030 and achieve carbon neutrality by 2060".However,the scientific measurement of building carbon emission is very important for the successful completion of the two-carbon target.As the most authoritative and extensive method for calculating building carbon emissions,carbon emission factor method has been gradually valued by scholars and institutions.However,at present,building carbon emission factors come from a wide range of sources,and due to the disunity of research ages,methods and other aspects,even the same carbon emission factors may correspond to data of multiple orders of magnitude difference.In addition,related industrial adjustment and technological change make building information related to carbon emission constantly changing.As a result,it is difficult for the previous building carbon emission factors to scientifically match the current development situation,and then it is difficult to truly and objectively match the building design information,and scientifically carry out research on downstream related building carbon emission.Therefore,this study is guided by building information in the design process,takes the existing building life cycle database and relevant standards and literature as reference,and determines the standardized measurement method of building carbon emission factor with the calculation boundary and data quality as the core through the screening of key factors,and forms a scientific and standardized online platform of building carbon emission factor database on this basis.The specific research contents and conclusions are as follows:(1)Summarize the information of the architectural design process and screen the key factors of carbon emission,divide it into the feasibility study stage,scheme design stage,preliminary design stage and construction drawing design stage,study each process of architectural design,extract the relevant information affecting the building carbon emission,and screen the key calculation parameters.Based on the architectural information of the design process,the standardized configuration of carbon emission factors for the architectural design process was determined.(2)Combined with the key parameters of carbon emission in the design process,the functional units and system boundary principles of all kinds of energy,transportation,machinery and equipment,raw materials,building materials and building components were set to complete the standardization scope limitation method;Building carbon emission factor data collection list and selection principles were established to complete standardized data collection and selection methods;A standardized data quality classification method was established by combining data source,data representativeness(sample integrity,technical representativeness,year representativeness and geographic representativeness)and data inventory algorithm.Establish the error transfer theory model to complete the standardized uncertainty measurement method;Building component code is established to complete the upstream and downstream data linkage between materials and components.According to the whole-process standardization method,the data of carbon emission factors of building foundation and building components were calculated to obtain the corresponding standardized data set.(3)According to the functional requirements of the database,such as data import and export,editing and query invocation,combined calculation and other technical requirements,determine the operation system,interface design system and Chinese word segmentation system of the building standardized carbon emission factor database and complete the construction of the online platform framework of the database,and combine the relevant programming software.The whole process of building carbon emission factor measurement method and standardized data set are integrated to realize the database development and application.This study is helpful to build a practical and more scientific and standardized building carbon emission factor calculation method and database application platform,so that the building carbon emission calculation process becomes convenient,accurate and efficient,promote the scientific work of building carbon emission reduction,promote the low-carbon development of China’s new building industrialization,and then help the smooth completion of the goal of "carbon peak and carbon neutrality". |
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