jismart2024067: Review on Regional Ecological House Model: Study Case of Surabaya and Kitakyushu Ecohouse

Abstract

Research on an ecohouse in Kitakyushu showed that it requires significantly more energy for heating during winter. In summer, the ecohouse model significantly reduces energy consumption and efficiently utilizes natural ventilation. This illustrates the potential benefits of passive design concepts in ecohouses for lowering energy consumption, particularly in hot and humid climates where heating systems are not required. Indonesia is a tropical country with a hot and humid climate. Several passive cooling technologies applied in the Surabaya ecohouse include open space arrangements, ventilation and natural lighting, double roofing, ventilation channels in private sections, cold storage by night ventilation, and a radiant cooling system. Compared to the ecohouse model in Japan, which utilizes OM Solar passive AC, hydrogen fuel cells, multi-insulated wall materials, floor ventilation systems, and cool/hot tubes. The advancement of these technologies highlights the importance of evaluating system choices and their applications. The research methodology begins with comparing several ecohouses and their systems already established in Japan, using data gathered from literature studies and the official datas of each ecohouse. Next, the study evaluates which Japanese ecohouse systems have been applied in Indonesia and which have not, especially the cooling system.