The microbiology contaminants and microclimate parameters in the nursery building

Abstract

The indoor microclimate quality is an important factor affecting the human body. Inappropriate microclimate parameters and air pollutants can cause health problems or even be life-threatening. In addition, it can reduce work productivity and learning efficiency. In the article, the analysis of the rooms in the nursery building ventilated by a mechanical system equipped with air ionizers was conducted. The results of research were compared with the research results for rooms of the same type, but equipped with the passive stack ventilation. Fungi were detected in the analyzed building that does not pose a threat to the lives of people, but they can cause allergies and asthma. With regard to the reference objects, in the analyzed building, the microclimate was free from fungi species yeast-like fungi and Trichoderma viride, which occurred in the reference rooms. The indoor relative humidity was kept at a level not conducive to the development of fungi. The concentration of the carbon dioxide in rooms where children stayed permanently did not exceed the permissible value. Slight excessive concentration levels were observed only in the cloakroom. Only the internal air temperature exceeded 25 °C, which favors the development of fungi. This means that it would be appropriate to lower the indoor air temperature.