Influence of Building Air Tightness on Energy Consumption of Ventilation System in Nearly Zero Energy Residential BuildingsWei Liu, Zhen Yu, Jianlin Wu, Huai Li, Caifeng Gao and Hongwei GongE3S Web Conf., 111 (2019) 03074DOI: https://doi.org/10.1051/e3sconf/201911103074