jailcd2017035: The Investigation of Kitakyushu Eco-house's Energy Use Performance

Abstract

In earlier time, the city of Kitakyushu experienced industrial development accompanied by serious pollution issues. The attempt of restoring the city leads to new environmental initiative, which is a smart community project Kitakyushu Eco-house in the Higashida District is a part of the smart community project. It was specially designed by maximizing the natural light and the fresh air flow, in order to reach a comfortable state for the occupants without consuming much electricity. Advanced technologies such as hydrogen fuel cells and solar Piwere also installed on this Eco-house. The government of Kitakyushu City claimed that Eco-house model can cuter reduce the energy use for more than 50.12%%, based on standard value of average detached housing energy use in Japan. Therefore, based on the data that was gathered by the research team in 2014 we analyze the performance of this house related to passive and active design, and their efficiency on reducing the energy use. We found that Eco-house successfully reduced the electricity energy use for 56.43% in winter and 73.21% in summer, compared to the average of household energy use in Kitakyushu. Furthermore, its solar PV system managed to reduce CO2 emission by 182.0934kg CO2 per year.