Research On Photovoltaic/Thermal Modular Design Of Building Facades In Cold Regions

With the proposal of the "dual carbon" goal,photovoltaic power generation has become the fastest-growing non fossil energy in recent years,and multiple photovoltaic technologies have been included in the green promotion technology catalog.As an important manifestation of green buildings,photovoltaic buildings with photovoltaic integration as the core have ushered in a period of rapid development.In the current design environment,due to the separation of architectural design and photovoltaic energy conservation measures in the design phase,the lack of mature design thinking in building energy conservation,the lack of experience in building energy conservation design and other factors,the design method of photovoltaic buildings is relatively simple,and the separation and fragmentation of photovoltaic modules and buildings are still widespread,At the same time,there is a lack of consideration and optimization of the factor that the power generation efficiency of photovoltaic cell modules is affected by temperature-as the temperature increases,the efficiency of photovoltaic modules in the comprehensive utilization of solar energy will decrease.Therefore,design measures that utilize the waste heat of photovoltaic power generation to meet the needs of building heating or hot water are essential.How to improve the efficiency of photovoltaic modules in the comprehensive utilization of solar energy,form a complementary application of light and thermal benefits,become an organic component of buildings,and improve design and construction efficiency,integrating photovoltaic energy-saving design into buildings is the main research direction of this article.Modularization is a design method with clear logic and efficient processes.Its core lies in the overall decomposition and individual recombination.The decomposability and recombinability of modules effectively improve design adaptability and efficiency.This article combines modular design theory with PV/T(Photovoltaic/Thermal)technology to explore new strategies for the design of building facade photovoltaic modules in photovoltaic integrated buildings.This thesis is divided into four major parts:The first part is the background and foundation of research development trends and problems faced,covering the content of the first and second chapters.The first chapter introduces the research background,research direction,research purpose and significance,research methods and content,research technology roadmap,and analyzes relevant domestic research.Chapter 2 conducts research on the current application status of photovoltaic buildings,including the application status of photovoltaic technology,the existing structure of photovoltaic technology,and proposes key points for innovative photovoltaic building design to provide support for the following text.The second part introduces modular design methods,explains the design ideas and working principles of PV/T modules in this article,explores the applicable principles of PV/T module design,and proposes corresponding design strategies,including the content of Chapter 3 and Chapter 4.Chapter 3 starts with the theory of modularity,combines its development history and technical characteristics,as well as the existing design practices of modularity in the structure,space,facade,and other aspects of buildings.It proposes design principles such as reasonable decomposition,diverse combinations,realistic construction,and energy efficiency in photovoltaic facades,and then uses BIPV-T experimental rooms as the object to demonstrate the usage and energy-saving estimation of PV/T modules.Chapter 4 is based on Chapter3 and further takes the BIPV-T experimental room as the object.Detailed strategies for modular design in photovoltaic facades are proposed from four parts: single PV/T module construction,combination construction between PV/T modules,combination construction between PV/T modules and the main structure of the building,and detailed construction of PV/T module single body.The third part is Chapter 5,which will promote the complete design process of the mature PV/T module application in actual construction projects.The architectural achievements after the application of PV/T modules will be presented in multiple directions and energy-saving benefits will be estimated,and further feasibility analysis of practical applications will be conducted.In this section,the author selects the campus history museum building of Shandong Jianzhu University as the object for design research.The fourth part is the conclusion of Chapter 6,which summarizes the entire text,summarizes the main conclusions of this thesis,and proposes further optimization research directions.