Study Of Indoor Air Quality And Visual Technique

This paper is closely attentions to the study of the TVOC emit theory in dry material and visual technique of indoor air quality (IAQ). The main contents include seven chapters, as follow:(1) Studied the visual technique (VT) of transport path of contaminants and evaluated of the indoor air quality based on the VT. The building environments are affected by the ventilations, contaminants and so on. In this paper, the ventilate eliminate ratio, contaminant sources diffuse affect ratio, contaminant sources pollute ratio, contaminant sources emission intensity, discrete contaminant sources mass flux contribute ratio and contaminants product ratio were presented for evaluate the effective of the ventilation, indoor air quality and the affects to the human, which enriched the use of the Massline in the building environment. The evaluation of indoor air quality was emphasized by the"see".(2) Studied the visual technique of the transport of mass and heat in the complex boundary with the moving object. at two-dimension turbulent model, the transport of the mass and heat were simulated and analyzed in the more inner factor in room, which including machine ventilation, heat source, contaminant source and the moving object. This is helpful to control and conduct the building indoor environment by visual technique of it.(3) Discussed the effect of the moving human on the airflow and contaminants distribution in the ventilation room. According the visual technique of the flow field and contaminant distribution , the affects of the moving human and steady human on indoor air quality at the both of the displacement ventilation and mix ventilation were compared.(4) Studied establish and operate of TVOC emission model in dry material based on the business software FLUENT.(5) Studied the TVOC exposure dose in different human behaviors at re-circulated mix ventilation room by simulating by using the TVOC emission model and the precision of results by the different input parameters in the TVOC emission model with the long time emitting. Finally, the results of effect of the different step times were compared, and the effects of the init contaminant distribution and the inner diffuse coefficient in the materials to the TVOC emitting characters were studied.