A Study on Indoor Natural Ventilation in High Rise Housing from the Perspective of Carbon Reduction, Shanghai, China.

Abstract

As a big country of carbon dioxide emissions, China's emission reduction situation is very grim, while the construction sector accounts for a considerable proportion of the country's carbon emissions. As a large number of residential buildings occupy a large proportion in the field of construction, the residential emission reduction has great potential and practical significance. Therefore, combined with the daily behavior characteristics of the residents in our country and the suitable temperature experience, to explore the relationship between indoor natural ventilation and energy saving and from low carbon perspective, and study the methods of optimal design of residential interior space from the perspective of carbon emission reduction, has become a research topic with urgency. In this study, the residential area in Shanghai, which is located in the hot summer and cold winter zone in the Yangtze River Delta area, is taken as the research object. The main research methods are software simulation, empirical research, literature research and questionnaire survey. This study explores the influence of design factors such as location and size of doors and windows on the indoor natural ventilation of residential buildings. This study seeks to improve the design method of indoor natural ventilation, and to explore the relationship between indoor natural ventilation and the residential energy consumption and carbon emissions in the whole life cycle. Based on this, the paper also tries to reveal the demand of residents for thermal comfort and the appropriate temperature range of thermal experience, and to study the correlation between energy saving, carbon saving and resident behavior. The paper collects and arranges the previous theoretical research results that affect the natural ventilation inside the house. On the basis of that, the physical factors which affect the outside ventilation of doors and windows, which have the greatest influence on indoor natural ventilation, are selected as the object of study. First of all, it introduces the background, purpose and significance of the research, as well as the research questions, reviews and summarizes the relevant theories and literature, and discusses the relationship between the empirical data of building case and the energy consumption simulation data. Secondly, the paper studies the influence of exterior window changes on natural ventilation, including three aspects such as the located among the exterior doors and windows with the interior door, the different width of external doors and windows and the changes of summer outdoor natural wind flow direction. And it also analyzes the influence of the change of exterior doors and windows on building carbon emissions, including the annual energy consumption of building equipment system and the carbon emissions caused by the related outer structure materials. Finally, the dissertation has studied the influence of indoor natural ventilation on household emission reduction potential. This paper combines the results of the investigation of the residents' heat comfort behavior with the purpose of indoor natural ventilation, and uses the existing research results to simulate and estimate the related household behavior emission reduction potential. And it also gives the summary and outlook of this research. This study makes a comprehensive evaluation and comparison of the conclusions drawn from the research in the fourth, fifth and six chapters. This study also concludes the potential and feasibility of this design approach to reduce the overall carbon emissions of residential buildings by natural ventilation in residential buildings. The result of the research shows that, through the natural ventilation design of residential buildings can not only create a reasonable natural wind environment and good quality of living in the cultural level, but also reflects the great potential in low carbon emission level. And, as far as possible, it can achieve relative balance in these two seemingly contradictory areas. It is hoped that through this study, we can further deepen the understanding of the good effects and importance of the natural ventilation of residential buildings to architects, real estate developers and government departments. At the same time, we hope that it can proved some reference for the future residents about the heat comfort experience and the relevant standards and design guidelines of the natural ventilation level of residential buildings. Taking into account energy-saving emission reducation at the same time to promote the quality of housing residents to optimize the promotion.