自然通风条件下热舒适性的模拟分析

Simulation and analysis of thermal comfort in natural ventilation

采用基于CFD理论的Airpak软件对自然通风(正弦周期性波动的风速)条件下的热舒适性进行模拟分析,通过预测平均热感觉(PMV)指标和不满意率(PD)指标对热舒适性进行评价,比较人体对低频(0.3、0.4、0.5 Hz)变化风速的满意度。结果表明,在室内温度、相对湿度等条件不变时,PMV值与风速呈现出相同的变化规律,人体对变化频率为0.3 Hz的风速最满意。

Thermal comfort on natural ventilation condition（sinusoidal periodic fluctuations of the wind） was simulated and analyzed on the basis of CED theory by means of Airpak software.By using predict mean vote（PMV） and degree of dissatisfaction,thermal comfort is evaluated and the degree of satisfaction of human body at winds of different low frequencies（0.3,0.4,0.5 Hz） is compared.The result shows that,under the condition of relatively unchanged indoor temperature and humidity,the value of PMV changes with the wind and people have the best satisfaction when the wind speed frequency is 0.3 Hz.