兰州市冬季高校教室环境状况调查分析

An Analysis of the Environmental Status of University Classrooms in Lanzhou in Winter

为了研究兰州市冬季高校大学生上课期间的教室内环境状况。对兰州市某高校22间教室的室内空气干球温度、相对湿度、风速、CO2浓度等环境参数进行了现场测试,并按照ASHRAE 7点标度对学生热感觉进行主观调查。测试结果表明,教室内相对湿度都低于50%;95.5%的教室空气温度都满足16℃-24℃国家标准要求;上课期间54.5%的被调查教室内的CO2浓度超过卫生标准的3-4.5倍。问卷调查结果表明,80%以上的学生对所处教室的热环境表示满意,78.1%的学生认为室内空气干燥。兰州市冬季高校教室环境状况有待改善,建议采用人工加湿和开窗通风等手段,改善教室室内空气品质。

To analyze the indoor environmental status of university classrooms during the schooltime in Lanzhou in winter.The field measurement of indoor environment parameters,such as air temperature,relative humidity,air velocity,and carbon dioxide concentration were carried out in 22 university classrooms.At the same time,thermal sensation scale,which uses ASHRAE seven-point scale,were surveyed with questionnaires.The test results showed that the relative humidity of testing classrooms were all lower than 50% and 95.5% indoor air temperature accorded with national standards of 16℃～24℃ and 54.5% carbon dioxide concentration were 3～4.5 times higher than hygienic standard.The questionnaire results demonstrated that 80% students felt comfort with the thermal environment and 78.1% students thought that indoor atmosphere was very dry.The environmental conditions of university classroom in Lanzhou in winter should be improved.The artificial humidifying and ventilation by windows were recommended.