Validation and Simulation Analysis of the Energy and Economic Performance of Zero Carbon House in Kitakyushu

学生名：趙 雪園

研究テーマ：Validation and Simulation Analysis of the Energy and Economic Performance of Zero Carbon House in Kitakyushu

入学年月:2017.10

修了年月:2019.09

取得学位:修士（工学）

論文概要:This study focuses on reducing household carbon dioxide emissions by analyzing the energy efficiency and sustainability of advanced residential energy systems. The research targets the "Jono Zero Carbon Smart Community" in Kitakyushu, a pioneering zero-carbon model that promotes ecological housing, energy-saving technologies, and optimized energy management to achieve a low-carbon society.

The study examines a home in the community equipped with a fuel cell and photovoltaic (PV) residential energy system. Data on electricity and gas usage from April 2017 to March 2018 were collected to analyze equipment performance, operational conditions, and seasonal variations in energy demand. Additionally, the energy consumption of a heat pump combined with a PV system was simulated under identical user load conditions to compare environmental and economic performances between the two systems.

Environmentally, the fuel cell combined with the PV system proved more effective, reducing CO2 emissions by 635 kg annually compared to the heat pump combined with the PV system. Economically, the heat pump-PV system demonstrated greater cost efficiency, with a payback period of 6.43 years, compared to 10.47 years for the fuel cell-PV system.

The research highlights the trade-offs between environmental benefits and economic feasibility in residential energy systems. While fuel cell-PV systems offer superior environmental performance, heat pump-PV systems are more economically advantageous, making them suitable for households prioritizing cost recovery. This study provides valuable insights for developing sustainable, energy-efficient residential technologies and achieving zero-carbon communities.