置换通风热力分层高度的数值研究
Numerical research on thermal stratification height of displacement ventilation systems
摘要：
根据置换通风系统的工作原理，介绍了置换通风热力分层高度的定义及数值计算方法，并对送风温度、送风速度等因素对热力分层高度的影响作了定性分析。在此基础上拟合出量纲一热力分层高度的经验公式。
关键词：置换通风,热力分层高度,数值模拟,热舒适性
Abstract：
Based on the operating principle of displacement ventilation system, presents the definition of thermal stratification height and the method of numerical calculation. Analyses qualitatively the influencing factors on the thermal stratification height such as supply air temperature and supply air velocity etc., and obtains an experiential formula for dimensionless thermal stratification height.
Keywords:displacement ventilation， thermal stratification height， numerical simulation， thermal comfort