| Experiment for VOCs emissions from the building material is established in building environment lab. Firstly, Isobutylene, Benzene, Toluene and m-Xylene diffusing in the room had been measured using PGM-7240-VOC gaseous apparatus. Then the characteristic curves and release velocity equations of contaminants had been got by dealing with the data measured in the lab. Secongdly, Exponential release velocity equation is loaded to the solver in FLUENT software by using User-Defined function. Then indoor airflow distribution and concentration field of the contaminants had been simulated, and the simulation results are compared with the measured results. Subsequently, simulation is adopted to the indoor air contamination in the building room with new finishing, and VOCs emission mechanism and space transmission have been analyzed. |
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