Research of CO₂concentration in naturally ventilated lecture room

Abstract

Abstract. Naturally ventilated buildings especially dedicated for educational purposes need to be design to achieve required level of thermal comfort and indoor air quality. It is crucial in terms of both: health and productivity of the room users. Higher requirements of indoor environment are important due to the level of students concentration, their ability to acquire new knowledge and willingness to interact with the lecturer. The article presents the results of experimental study and surveys undertaken in naturally ventilated lecture room. The data is analysed in terms of CO2 concentration and its possible influence on users. Furthermore the outcome of the research is compared with the CO2 concentration models available in the literature.

Regression Model of PM2.5 Concentration in a Single-Family House

“…Some people in the world spend most of the time indoor-due to working mode or air temperature in a given climate zone. Therefore, the internal microclimate has a strong impact on human health, well-being, and productivity [2,3].…”

“…Indoor air pollution can come from outside air that penetrates inside as well as from indoor sources [4,5]. The most common pollutants that have the greatest impact on reducing air quality are: solid particles (especially PM2.5 and PM10) and gaseous pollutants such as carbon dioxide and oxide, nitrogen oxides, ozone, and volatile organic compounds (VOCs) [3,6,7].…”

“…According to EEA (European Environment Agency), the average annual dust concentration with a diameter less than 10 µm should not exceed 40 µg/m 3 , while the 24-h concentration should be lower than 50 µg/m 3 . The average annual concentration standard for PM2.5 particulate is 25 µg/m 3 [15]. Annual and daily concentrations of particulate matter measured in urban and suburban areas often exceed World Health Organization (WHO), European Union (EU), and national levels [16][17][18].…”

Examination of PM10 and PM2.5 Concentration in an Apartment in a Multifamily Building

“…As we live in a moderate climate zone, we spend most of our time indoors. Therefore, the indoor environment and its microclimate has the strongest effect on human well-being, health and productivity [2,3].…”

“…Moreover, the influence of many of them on the human organism is still unknown. Common pollutants that have the most significant impact on the dilution of air quality include: particulate matter (especially PM2.5), carbon monoxide and dioxide, nitrogen oxides, ozone, volatile organic compounds, formaldehyde, radon, tobacco smoke and microorganisms [3,4].…”