非稳态横流作用下空调送风喷口下方动态热舒适性评价实验研究*
Experimental study on dynamic thermal comfort evaluation beneath air vent under unsteady cross-flow effect
摘要：
以RWI和PD为人体动态热舒适性评价指标，通过实验分析了动态横流影响下空调送风喷口下方区域典型测点动态热舒适特性。从喷口下方竖直方向和1.5 m高水平方向各测点的实验结果可知，动态水平横流的作用使各测点的RWI值和PD值均向舒适值域趋近。由理论分析可知，单纯从RWI和PD指标出发，即使气温在32 ℃情况下，环境风速在0.65～2 m/s范围内，仍能满足人体动态热舒适性要求。横流对空调送风的耦合作用能改善人体动态热舒适性，同时可提高送风温度，实现空调系统的节能。
Abstract：
Experimentally studies the dynamic thermal comfort characteristics beneath the air vent affected by the dynamic cross-flow, based on the dynamic thermal comfort evaluation index of RWI and PD for human body. According to the results of each measuring points along with vertical direction below the vent and the horizontal direction at the height of 1.5 m, the values of RWI and PD are close to the comfortable zone affected by the dynamic cross-flow. By theoretical analysis, only considering RWI and PD evaluation, when the air temperature is 32 ℃ and air speed is 0.65 m/s to 2 m/s, the dynamic thermal comfort need of human body can be satisfied. The coupling effect of cross-flow on air conditioning supply can both improve the dynamic thermal comfort requirements, and increase the supply air temperature to achieve energy-saving of air conditioning system.
Keywords:air conditioning supply, cross-flow, dynamic thermal comfort, relative warmth index, percent of dissatisfied