THEORETICAL STUDY OF VOCS’ TRANSFER IN A SILICA GEL ROTOR
One-dimensional partial differential equations were used to model the simultaneous water and VOCs adsorption and desorption in a silica gel rotor which was recommended for indoor air cleaning. The interaction among VOCs and moisture in the adsorption and desorption process was neglected in the model since the concentrations of VOC pollutants in typical indoor environment were much lower than that of moisture and the adsorbed VOCs occupied only a minor portion of adsorption capacity of the rotor. Consequently VOCs transfer was coupled with heat and moisture transfer only by the temperatures of the rotor and the air stream. The VOC transfer equations were solved by discretizing them into explicit up-wind finite differential equations. The model was validated with experimental data. The calculated results suggested that the regeneration time designed for dehumidification may be prolonged to allow complete removal of the VOC pollutants from the rotor. The application of the model in estimating the cleaning capacity of the rotor for VOC pollutants was demonstrated.
VOC Adsorption Model Silica Gel Rotor
G.Zhang Y.F.Zhang L.Fang
School of Environment Science and Technology, Tianjin University, China；International Center for Ind School of Environment Science and Technology, Tianjin University, China
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）