Study on the Carbon Emission Reduction Potential and Operational Optimization of Sewage Heat Recovery Systems in Urban Buildings
学生名:徐 桐宇
研究テーマ:Study on the Carbon Emission Reduction Potential and Operational Optimization of Sewage Heat Recovery Systems in Urban Buildings
(都市部における下水熱回収システムの炭素排出削減のポテンシャルと運用最適化に関する研究)
入学年月:2023.04
修了年月:2025.03
取得学位:博士（工学）
論文概要:This study evaluates the effectiveness of wastewater heat recovery systems in reducing carbon emissions in the building sector and proposes optimal strategies. Focusing on improving energy efficiency and reducing carbon emissions through the recovery and utilization of wastewater heat, the study combines simulation analysis and case studies to examine its feasibility.
Chapter 1 outlines the background and objectives of the study.
Chapter 2 organizes research on the types of wastewater heat recovery systems, their application cases, and their integration with other energy-saving technologies, clarifying the significance of this study.
Chapter 3 provides an overview of statistical analysis and data processing methods using normal distribution, presenting the approach to the main part of the research.
Chapter 4 collects statistical data on water usage behavior in cities in northern China and formulates drainage patterns by building type into probabilistic distribution models. These models are validated through case studies.
Chapter 5 constructs a wastewater condition prediction model by integrating the drainage model with population data and wastewater network distribution maps. A heat recovery utilization model is added to evaluate the carbon reduction potential of wastewater heat recovery, identifying the optimal building types using three scenarios.
Chapter 6 proposes the integration of wastewater source heat pumps with micro-cogeneration systems to address energy consumption and stability issues. Simulations are conducted, evaluating a large hotel in Changchun, Jilin Province, China, to demonstrate both carbon reduction and economic benefits.
Chapter 7 summarizes the study’s findings and presents future perspectives.