The impact of natural ventilation on energy consumption in detached houses based on different climate zones in Japan

学生名：REN YUFAN

研究テーマ：The impact of natural ventilation on energy consumption in detached houses based on different climate zones in Japan

入学年月:2020.10

修了年月:2023.09

取得学位：修士（工学）

論文概要:This paper examines the impact of natural ventilation on energy consumption in detached houses across Japan’s diverse climate zones. By analyzing regional climate characteristics, the study highlights significant variations in the annual effective ratio of natural ventilation, influenced by climate conditions. The efficiency of natural ventilation increases from north to south, with cold northern regions like District 1 showing limited potential, while southern areas, especially Naha City in District 8, achieve the highest annual efficiency of 44.5%.

Using BEST software for simulation, the study evaluates the effects of natural ventilation on indoor temperature and cooling energy consumption. It reveals that natural ventilation can save 10% to 40% of energy depending on the climate zone. In northern zones, it reduces cooling energy consumption by nearly half, while in southern regions, the energy-saving potential is about five times greater than in colder areas.

These findings provide valuable insights for designing detached houses optimized for natural ventilation across different climate zones in Japan, promoting energy efficiency and sustainability.