Distribution characteristics of indoor oxygen concentration under natural ventilation in oxygen-enriched buildings at high altitudes

作     者：Cong Song Tingting Zhao Yanfeng Liu Dengjia Wang Cong Song;Tingting Zhao;Yanfeng Liu;Dengjia Wang

作者机构：State Key Laboratory of Green Building in Western ChinaXi'an University of Architecture and TechnologyXi'anShaanxi 710055China School of Building Services Science and EngineeringXi'an University of Architecture and TechnologyXi'anShaanxi 710055China 

出 版 物：《Building Simulation》 (建筑模拟（英文）)

年 卷 期：2021年第14卷第6期

页      面：1823-1841页

核心收录：

学科分类：08[工学] 081404[工学-供热、供燃气、通风及空调工程] 0814[工学-土木工程] 

基　　金：We extend our gratitude to the funding supports of National Natural Science Foundation of China(No.51878532) Shaanxi Province Natural Science Foundation Research Project of China(No.2019JQ-392) Independent Research and Development project of State Key Laboratory of Green Building in Western China(No.LSZZ202008) 

主　　题：high altitude indoor environment-oxygen concentration distribution natural ventilation oxygen enrichment 

摘      要：Diffuse oxygen supply is an important means to improve the indoor oxygen environment of buildings and ensure physiological and psychological health of immigrants in plateau *** research on oxygen enrichment strategies at high altitudes has mainly focused on confined spaces under mechanical ventilation,with few studies on the distribution of indoor oxygen concentration under natural ventilation in actual *** study used a verified computational fluid dynamics(CFD)method to investigate the indoor oxygen distribution with practical consideration of natural ventilation at high *** results showed that the oxygen distribution under wind-driven natural ventilation was more nonuniform than that under buoyancy-driven natural ventilation,with the ratio of local oxygen concentration to overall-mean oxygen concentration,the k value,between 0.8 and 1.3 under wind-driven natural ventilation and between 0.9 and 1.1 under buoyancy-driven natural *** effects of meteorological condition and oxygen source position on indoor spatial oxygen distribution characteristics were explored with careful examination in human occupied zone under lying,sitting and standing *** results can provide implications for effective and energy saving design of indoor oxygen supply system in plateau buildings.