北方某高校教室空气品质的研究—以大连市为例

Study on Indoor air Quality of a University Classroom in Northern Region—Illustrated by the Case of Dalian

室内空气品质不仅影响人体的舒适和健康,而且对室内人员的工作和学习效率有着显著的影响。本研究以大连市某高校为研究对象,利用MCH-383SD CO2浓度/温、湿度记忆仪和TSI粉尘仪对教室秋季及冬季空气品质进行现场测量,测量项目包括CO2浓度、温度、相对湿度和颗粒物(PM2.5、PM10)浓度,探讨测量项目对学生学习效果的影响。研究得出,影响高校室内空气品质的最主要原因是教室CO2浓度超标、人均新风量不足以及教室人数超员。连续监测反映出室内CO2浓度的增长与室内人数及通风情况有关,且冬季采暖期室内CO2浓度远高于秋季。基于可行性前提,本文提出了改善高校室内空气品质的几种方法。

Indoor air quality not only affects the comfort and health of the human body, but also has a significant impact on indoor work and learning efficiency. The research assesses a certain university in Dalian, using MCH-383SD and TSI Dust Monitor to measure the air quality of classroom, with measuring items including CO2 concentration, tempera- ture, relative humidity and repairable particulate matter (PM10, PM2.5), which aims to explore the impact of CO2 con- centration factors and their impacts on students’ learning outcomes. The study concludes that the biggest factors affect- ing indoor air quality are exceeded indoor CO2 concentration, insufficient fresh air volume (per person) and over-crowded classroom. The continuous monitoring reflects that the increase of the indoor CO2 concentration is related to the number of people in the classroom and the ventilation condition. And the indoor CO2 concentration is much higher in heating period of winter than the concentration in autumn. Based on the premise of the feasibility, the paper proposed several new methods to improve the indoor air quality in college during winter.