Winter Indoor and Outdoor Air Quality Test and Analysis for Secondary School Classrooms in North China
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Secondary school classrooms in North China mostly use centralized heat supply or split air-conditioning in winter. Due to the long-term closure of the classroom doors and windows, indoor air quality reduces the learning efficiency of students. Taking a classroom in a secondary school in Jinan as an example, this paper gives a one-week monitoring of indoor and outdoor air and gives changes in indoor and outdoor CO2 concentration, PM2.5 concentration, temperature, and relative humidity. This paper also provides basic data for the determination of fresh air volume in classrooms under haze conditions.
KeywordsThe classrooms of secondary schools Carbon dioxide concentration PM2.5 Outdoor air volume
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