A novel point source oxygen supply method for sleeping environment improvement at high altitudes

作     者：Yanfeng Liu Zhiyuan Song Cong Song Dengjia Wang Yanfeng Liu;Zhiyuan Song;Cong Song;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：1843-1860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 the National Natural Science Foundation of China(No.51878532) the Shaanxi Province Natural Science Foundation Research Project of China(No.2019JQ-392) the Independent Research and Development project of State Key Laboratory of Green Building in Western China(No.LSZZ202008) 

主　　题：oxygen supply indoor airflow built environment CFD method high altitudes 

摘      要：The hypoxic environment at high altitudes causes various sleep *** oxygen enrichment is an effective way to alleviate sleep disorders and improve the built environment in high altitude *** this study,a novel point source local diffuse oxygen supply method was proposed to improve the sleeping oxygen *** oxygen supply performance was investigated by the computational fluid dynamics(CFD)method including the oxygen concentration and air velocity distributions.A sleeping experiment was conducted on the plateau to validate the CFD *** occupied zone including the inhalation zone and the active zone was *** results showed that the oxygen concentration showed a rapid rise,then decreased slowly,and finally tended to be *** oxygen concentration after stabilization was remarkably influenced by indoor ventilation *** sleeping environment’s improvement was examined considering the oxygen enrichment efficiency,uniformity,stability and human comfort *** optimal strategies were recommended with a ventilation rate of 1 air change per hour,supplied oxygen concentration of 90%;and jet distance of 0.50 *** study contributes to improving the oxygen environment and human sleep quality in an effective and energy-saving approach to the sustainable development of buildings in high altitude areas.