Research On Low-carbon Design Of Building-Integrated Photovoltaics(BIPV)

Massive carbon emissions lead to global climate change,posing a threat to human survival and development.In response to this problem,China has proposed carbon peaking and carbon neutrality goals.As one of the major carbon-emitting industries in my country,the low-carbon development of the construction industry is crucial to achieving the dual-carbon goal.Vigorously developing green buildings is an important means to achieve low-carbon buildings.Building Integrated Photovoltaics（BIPV）has become an important green building measure to achieve low-carbon buildings due to its efficient carbon reduction effect.However,due to the lack of targeted low-carbon design guidance by architects,BIPV projects are faced with many problems:BIPV design emphasizes economy,aesthetics,and performance on the equipment side.Quantitative verification.Therefore,this paper studies the low-carbon design of BIPV,and uses carbon emission value as a quantitative indicator to construct a low-carbon design path framework for BIPV.This study mainly focuses on the following aspects:Firstly,the characteristics of BIPV are clarified through the introduction of BIPV system classification,system composition and combination form.Through BIPV-related low-carbon design theories:green building theory,integrated design theory,whole life cycle theory,and design process analysis,the design principles,theoretical basis and design process suggestions are clarified.Through the study of different carbon emission quantification methods,the calculation method of BIPV’s full life cycle carbon emission is summarized.Secondly,as a green building category,BIPV can refine and summarize the relevant indicators of BIPV low-carbon design from the perspective of green building evaluation.Therefore,this paper conducts a comparative study on the green building evaluation standards related to BIPV low-carbon design,establishes the framework scope through the comparison of the evaluation scope,summarizes the low-carbon design path through the comparison of the evaluation content,and clarifies the path through the comparison of the index weights.The main points of the framework,and finally establish the BIPV low-carbon design path framework.Thirdly,based on the BIPV low-carbon design path framework,it summarizes five low-carbon design strategies in energy system,material use,operation and maintenance management,environmental adaptability and innovation,and further proposes efficient configuration of energy system,reliable procurement,durability 16 specific implementation measures,such as improving the performance of the building,considering the convenience of maintenance in the design,considering the energy measurement and management in the design,optimizing the thermal performance of the envelope structure,and utilizing new energy technologies.Finally,taking the BIPV low-carbon design project of Suzhou University of Science and Technology Architectural Experiment Center as an example,a number of BIPV low-carbon design strategies such as efficient configuration of energy systems,optimization of natural ventilation,and optimization of shading design are implemented to verify the feasibility of the application of BIPV design strategies.Quantify the actual effect of low-carbon design through energy simulation,power generation simulation,and carbon emissions calculations.The final calculation shows that the carbon emission of the BIPV system in the whole life cycle（50 years）of the building is 281.82tCO₂,and the carbon reduction is 4101.494tCO₂.