摘要
通过对带有屏幕墙高大空间的气流组织数值计算,对比分析了大厅传统中送下回、主屏下送上回+大厅中送下回、主屏下送上回+大厅地板下送3种送风方式下温度场分布、速度场分布以及热舒适性。结果表明:主屏下送上回+大厅中送下回是带有屏幕墙高大空间的最优送风形式,0.9 m和1.5 m高度截面上不同位置的最大温度差不超过0.5℃,各处风速不超过0.2 m/s;PMV指标维持在0.39~0.47之间,PPD维持在8.2%~9.5%之间,能有效解决传统中送下回送风形式下大屏附近区域热不舒适问题,以及热舒适分布不均问题。
By numerical calculation of air distribution in large space buildings with screen walls, the temperature field distribution, velocity field distribution and thermal comfort under three air supply modes are compared and analyzed, including overall air supply in large space building, air curtain with side air supply coupling, and air curtain with floor air supply coupling. The results show that the air curtain with side air supply coupling mode is the optimal air supply mode, the maximum temperature difference at different positions on the sections at 0.9 m and 1.5 m height is less than 0.5 ℃, and the wind speed is less than 0.2 m/s. The PMV index is maintained between 0.39-0.47, and the PPD is between 8.2%-9.5%, which can effectively solve the thermal uncomfort and uneven distribution problems in areas near large screens in traditional air supply mode.
作者
吕芳
李宗新
段德义
万福京
梁庆峰
LV Fang;LI Zongxin;DUAN Deyi;WAN Fujing;LIANG Qingfeng(Institute of Defense Engineering,AMS,PLA,Beijing 100850,China;Tianjin University,Tianjin 300350,China)
出处
《防护工程》
2022年第2期59-66,共8页
Protective Engineering
关键词
高大空间建设
气流组织
热舒适性
large space building
air distribution
thermal comfort
