| dc.description.abstract | With increasing energy demand in Taiwan, improving the energy efficiency of buildings and reducing carbon emissions have become pressing issues. Most buildings in Taiwan use
air-conditioning systems to provide thermally comfortable indoor environments, whereas these systems consume significant amounts of electricity. This study combines a natural ventilation model with a building energy model to the predict indoor temperatures of a single-story residential building under different scenarios, aiming to explore the impact of hybrid ventilation on building energy efficiency. Simulation results show that natural ventilation can effectively reduce indoor temperature, discomfort hours, and cooling degree hours, thus saving energy. Among the natural ventilation strategies, cross-ventilation, due to its higher ventilation rate, has a better cooling effect compared to two-opening on the same wall and single-opening ventilation. Additionally, the energy-saving efficiencies of hybrid ventilation for the same residential building in Taipei, Taichung, and Kaohsiung are 10.5%, 17.9% and 24.3%, respectively. This study also explores the effect of global warming trend between year 1980 to 2020 on the cooling energy demand of residential buildings in Taiwan. The simulation results indicate that the increase rate of cooling energy demand is about 35.3% per year. Therefore, buildings should adapt hybrid ventilation to reduce the electricity consumption of mechanical ventilation and achieve the goals of energy saving and carbon reduction. | en_US |