| There is a large stock of existing residential buildings in China,and the performance of residential buildings constructed in different periods is different.Buildings with some operating hours can no longer meet the growing material needs of residents.Although some existing residential buildings are lacking in performance,the main structure is good and the scale of the existing buildings.If these existing residential buildings are directly demolished and rebuilt,it will waste both money and resources,which is not in line with energy conservation,environmental protection and sustainability.Building development concept.This residential building can be improved to improve its building performance.At present,the transformation methods of residential buildings mainly include energy-saving transformation and green transformation.The energy-saving transformation of residential buildings generally only involves the transformation of the building’s energy-saving performance.The green transformation of residential buildings involves a wider range,including not only energy-saving transformation but also renewable energy.The transformation of energy,greening and environmental performance of the building will make the building and nature harmoniously coexist under the replacement of improving the performance of the building,and effectively improve the performance of all aspects of the existing residential building through green transformation.The global greenhouse effect is becoming increasingly serious.As an important source of greenhouse gases,the carbon emissions of the construction industry are an important change in reducing global greenhouse gas emissions.It is also an inevitable trend in the development of the construction industry.The green transformation of existing residential buildings is the carbon emission of construction.Realization This article analyzes the carbon concentration of internal buildings and combines the national conditions of China to study the existing residential buildings in the cold regions of China that are suitable for green reconstruction.By studying the quantification methods of green replacement carbon for existing residential buildings in cold regions,it is optimized by calculation of engineering examples.The calculation process of this method.Use the quantification method of green transformation carbon conversion of existing residential buildings in cold regions to analyze the actual project carbon conversion effect,optimize the carbon emissions and carbon emission reduction effects of the reconstruction project in accordance with the actual situation of the project,and reasonably increase the carbon preset amount of the existing residential building green reconstruction project.Through research and analysis,the green reconstruction scope of existing residential buildings in extremely cold regions was finally determined;a carbon conversion method for green reconstruction projects of existing residential buildings in cold regions was established,which can be used for preliminary carbon conversion of existing residential buildings in other cold regions.Quantitative analysis and optimization of the carbon balance effect of the renovation project;Quantitative analysis of the carbon conversion effect of a green renovation project of an existing residential building in a cold area,optimizing the carbon substitution effect of the project. |