A Study On Distribution Of The Pollutants In The Air-condition Room

Since the widespread use of air-conditioning and the decoration, many toxic and harmful substances release continuously after the decoration. What is worse, the confined air-conditioned environment causes further deterioration of the indoor air quality. Therefore, it is of great guiding significance to make a research on the different forms of air supply in the air-conditioned rooms and the control over the indoor pollutants concentration under different air supply conditions.Through experiments testing methods, the author has analyzed the actual distribution of pollutants after obtaining the pollutants concentration of the each measuring point under the conditions of indoor orifice plate air supply and processing the data. With the application of CFD technology, and on the basis of building a physical model of the experiment environment, the author made numerical simulation study on the research issues through the establishment of two k-εequations of the turbulence model. And then, the author has discovered that the concentration and the spatial distribution of pollutants change over time under the orifice plate air supply conditions. When comparing the experimental data with the simulation data, the two trends are well-consistent. It provided the feasibility of using this model to research the indoor pollutants distribution under the conditions of good ventilation.Under the prerequisite of the accurate verification model, the author further studied the distribution of the pollutants concentration and the changes under the different airflow organizations within the office. The author proved that the form of the orifice plate air supply is most conducive to the elimination of pollutants. In view of the orifice plate air supply model, the author made simulation data on the conditions of different temperatures, different supply air speed, different fresh air quantity, dissemination of different pollutants. The author has obtained the distribution of the pollutants concentration and the law of changes, expecting to provide the theoretical basis for the reasonable air-conditioning systems design from the perspective of the control over the indoor pollutants.