Experimental study of relative exposure to particles transmitted from kitchen in an apartment

Abstract

Residential kitchen cooking-generated particles have considered as a major pollutant source and have significantly effect on indoor air quality. Existing risk assessments always focused on kitchen area, ignoring the transmission of particulate pollution from kitchen. In this study, the experiment was designed to determine the relative exposure of particles in an apartment due to the transmission from kitchen in winter. Further, this study also analyzed the change rule of exposure ratio with increased wind speed. Particulate concentration was counted by PM2.5 sensors with the help of wireless data acquisition system in different places simultaneously. The meteorological data was conducted with one HOBO micro weather stations above the roof of building. Since it was difficult to guarantee the stabilization of emission rate of cooking-generated particles, venturi tube dust generator was used. The results indicated that the air quality showed different levels in the main function rooms. In this study, it found that the exposure ratios have no-obvious relationship with the wind speed on the condition of infiltration. Furthermore, the relative exposure slightly reduced with the wind speed increasing in master bedroom and living-room, but the tendency has gone in the opposite direction for the secondary lie.