基于不同活动强度的寒冷地区城市公园冬季热舒适研究

Study on the Thermal Comfort of People with Different Activity Intensities in the Urban Park During Winter in Cold Regions of China

为了揭示寒冷地区城市公园中不同活动强度人群的冬季热舒适特征,本研究结合微气候现场实测和热舒适问卷调查,分析不同活动强度人群的热感觉与热舒适关系,量化其热敏感性与热舒适阈值,探明微气候参数与热感觉的关联关系。结果表明:寒冷地区冬季城市公园中,人体活动强度越大,感觉越热,也就越舒适;活动强度越大,热感觉对热舒适的影响越明显,且人体热舒适达到最佳状态所对应的热感觉投票越小;活动强度越大,热敏感性越低;不同活动强度人群热感觉“适中”所对应的中性PET值分别为低活动强度16.0℃,中活动强度13.5℃,高活动强度-3.2℃;空气温度、黑球温度与不同活动强度人群的热感觉呈显著的正相关关系,活动强度越大,空气温度、太阳辐射对人体的热感觉影响越弱。

To reveal the characteristics of thermal comfort of people with different activity intensities in the urban park during winter in cold regions of China,this paper conducted field measurement of the microclimate and issued a questionnaire survey to analyze the relationship between thermal sensation and thermal comfort of people with different activity intensities.The values of thermal sensitivity and thermal comfort threshold were quantified to explore the relationship between microclimate and thermal sensation.The result shows that the greater the activity intensity of people,the hotter and more comfortable they feel.When the activity intensity increases,the effect of thermal sensation on thermal comfort becomes more prominent,and the thermal sensation votes corresponding to the optimal thermal comfort of the human body decrease.The greater the activity intensity,the lower the thermal sensitivity.The values of neutral PET of people with low activity intensity,moderate activity intensity,and high activity intensity are respectively 16.0℃,13.5℃,and-3.2℃.The thermal sensation of people with dfferent activity intensities is positively correlated with air temperature and globe.The greater the activity intensity,the weaker the influence of air temperature and solar radiation on the thermal sensation of the human body.