严寒地区高校宿舍夏季自然通风热舒适性研究

Study on Thermal Comfort of Natural Ventilation in Summer in College Dormitories in Severe Cold Areas

以严寒地区某高校学生宿舍为研究对象,采用现场测试,问卷调查和数值模拟相结合的方式,对学生宿舍内自然通风状态下气流组织状况及室内人员热舒适性进行研究。通过现场测试,测试期间室内平均风速为0.14 m/s,风速低于热舒适标准的要求值。对232名学生进行调查问卷,学生对宿舍内热环境总体感觉较不舒适,不舒适的比例达73.2%。通过Fluent软件模拟得出:外窗进口风速v=1 m/s的自然通风即可满足宿舍内通风要求。经过综合分析得出,夏季宿舍内较适宜的平均气流速度为0.28~0.32 m/s。

Taking a college student dormitory in the severe cold area as the research object, the air distribution and thermal comfort of the indoor students in the natural ventilation state of the dormitory were studied by means of field test,questionnaire survey and numerical simulation. Through the field test, the average indoor wind speed during the test period was 0.14 m/s, which is lower than the required value of thermal comfort standard. According to the questionnaire of 232 students, the overall feeling of thermal environment in dormitory was not comfortable, and the proportion of discomfort was 73.2%. By using Fluent software simulation, it is concluded that the natural ventilation with the wind velocity v=1 m/s at the entrance of the outer window can meet the ventilation requirements in the dormitory. Through comprehensive analysis, it is concluded that the more comfortable average air velocity of the dormitory in summer is 0.28~0.32 m/s.