Measured analysis of indoor pollutant concentration and air change rate in winter in the postgraduate dormitory of a university in Shenyang

Abstract

In this paper, taking 17 graduate male dormitories of a university in Shenyang as the research object, the relationship between the characteristics of internal personnel and pollutants, the relationship between pollutant concentration and air change rate in the winter dormitory is analyzed by means of questionnaire survey and measurement. Through test analysis, it was found that the number of students in the dormitory whose actual weight exceeded 10% of the normal weight was greater than or equal to 2 people, which would cause the indoor CO2 concentration to be significantly higher than that of the normal weight dormitory, and the smoking of students in the dormitory would cause an increase in indoor PM2.5 concentration; For indoor CO2 concentrations of more than 2000ppm in dormitories that are sealed all night, reasonable window ventilation is required to effectively reduce the concentration of gas pollutants; According to the questionnaire survey, it is known that students do not use doors and windows for ventilation, so that indoor air does not circulate, causing students to have drowsiness, lack of concentration, chest tightness and other symptoms. The results of the study provide a reference for improving air quality and ventilation strategies in university dormitories.