| Abstract [eng] |
Indoor air quality is determined by many factors. One of the factors is the building materials used in floor constructions. The most used floor coverings in office premises are wood-based, polyvinyl chloride, carpet. Some of the pollutants emitted from these floor coverings are attributed to volatile organic compounds, which have a negative impact on health. The dispersion of volatile organic compounds in the breathing zone is determined by air currents in the room caused by ventilation systems and warm surfaces (heating systems, people, office equipment). The aim of the master's thesis is to determine the influence of a computer on the distribution of pollutants in a room. In the master's thesis, four experimental studies were performed in a microclimate research chamber with different ventilation methods (mixing, ejection) and different types of computer - portable and stationary. Forty-four numerical models of pollutant dispersion were developed using experimental studies using the numerical fluid dynamics modeling program FloVent. The reliability of the model was evaluated and the analysis of factors influencing the dispersion of pollutants was performed. It was found that the type of computer, its parameters and position have a minimal influence on the dispersion of pollutants in the room and are more dependent on the method of ventilation. The intake of pollutants into the human convective flow is less intense when mixing ventilation method is operated, and a laptop is used for work. |
