Evaluation And Strategy Research Of Green Building Energy Saving And Emission Reduction Benefit Based On Entropy Weight-matter-element Extension Model

The problems caused by energy scarcity and greenhouse gas emissions are becoming increasingly prominent,and the double carbon target has put forward higher quality requirements for indicators such as energy consumption and pollutant emissions for the construction industry as a whole.The concept and advantages of green building in terms of energy saving,emission reduction and ecological health provide a direction and choice for the transformation and upgrading of the development of the modern construction industry,and the application and development of green building has brought significant results in energy saving and emission reduction for China’s construction industry.The active promotion and development of green buildings is necessary to implement the 14 th Five-Year Plan energy-saving tasks and to achieve the "carbon peak" and "carbon neutral" goals in the construction industry.Green buildings have shown good energy saving and emission reduction benefits in specific aspects,but the overall benefits need to be improved.This paper introduces the current state of research on the evaluation of the benefits of green building energy efficiency and emission reduction,and uses theories of green building,energy efficiency and emission reduction,as well as sustainable development,to clarify the connotation of the benefits of green building energy efficiency and emission reduction.The benefits of energy saving and emission reduction in green buildings are analysed in four dimensions: economic,technical,environmental and social.Based on the energy saving and emission reduction targets of the green building evaluation standards,the factors influencing the energy saving and emission reduction benefits of green buildings are initially identified,summarised using the literature analysis method,analysed and screened using principal component analysis(PCA)to determine the index elements and build a comprehensive and systematic index system for evaluating the energy saving and emission reduction benefits of green buildings.The index weights are determined through the entropy weighting method,and a benefit evaluation model based on the topological theory of material elements is established.Combined with the case analysis of green public building projects,the benefit levels of the projects were clarified,and the applicability and validity of the entropy-entropy topology model were verified.The path of energy saving and emission reduction in green buildings is established,and relevant strategies such as improving policies and regulations,integrating modern information technology to create smart buildings,and expanding the scale of new energy applications to promote the integration of photovoltaic buildings are proposed to fully enhance the energy saving and emission reduction benefits of green buildings and provide references for promoting the development of the green building industry.