Determinant Impacts on Household Energy Consumption in Japan and Vietnam

学生名:Tran Le Na

研究テーマ:Determinant Impacts on Household Energy Consumption in Japan and Vietnam

(日本とベトナムの住宅世帯のエネルギー消費に対する決定要因に関する研究)

入学年月:2019.10

修了年月:2022.09

取得学位:博士（工学）

論文概要: In the post-industrialization century, and with the impact of social crisis such as COVID-19 when more activities pour into the residential area leading to a significant change in the use of electrical appliances, which affect the household energy use, household energy tends to become the main share instead of the industrial sector. Japan and Vietnam belong to Asia Pacific region where total energy end-use is expected to account for 52% in 2050. To overcome the urgent need on household energy saving, this study simultaneously assesses the multiple influences of household determinants, housing design, and physics characteristics on energy end-use. The proposed research herein first aims to investigate the effects of all influencing factors on household energy consumption and to evaluate their complex relationships under different situation. Hybrid modeling combing physics based modeling and data-driven modeling is the state-of-the-art approach to be considered for energy forecast, while factor analysis has the potential for sorting the weight of factors. Discussion on the final results imply cognitive changes for consumers where the visualization of energy efficiency optimization can be easily captured so that environmental sustainability will be closer than ever. The brief of each chapter is as follows:
In Chapter 1, the background and purpose of the research were elaborated.
In Chapter 2, the literature reviews of household energy end-use and its determinants were studied.
In Chapter 3, the methodology of hybrid approach and path analysis was sorted out.
In Chapter 4, the data resource and correlation analysis in Japan and Vietnam are introduced.
In Chapter 5, the sensitivity analysis showing influence levels of housing factors and household behaviors in Japan is evaluated.
In Chapter 6, the Path analysis that discussed about the impact of household factor and housing factors in Vietnam is presented.
In Chapter 7, the comparison of household energy end-use based on different climate zones, housing design and occupant behaviors is examined in Japan and Vietnam.
In Chapter 8, the conclusion and prospect were drawn.