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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/2485

    Title: A new approach to estimating the volatilization rates of shower water-contaminated volatile organic compounds during showering
    Authors: Chen,M. J.;Wu,K. Y.;Chang,L.
    Contributors: 輔英科技大學 職業安全衛生系
    Keywords: Hybrid-showering model;Two-film;Mass transfer;Jet-flow stream;Spray droplet
    Date: 2003-10-01
    Issue Date: 2010-09-27 16:48:17 (UTC+8)
    Abstract: A mathematical hybrid-showering model was developed in order to describe the dynamic behaviour of volatile organic compounds (VOCs) contained in shower water during personal showering. The approach involves assuming a two-film theory and taking into account the dual flow patterns of “jet” and “spray” from a showerhead in order to estimate the emission of VOCs from tap water to air. The liquid-phase mass-transfer coefficients corresponding to both flow patterns and the gas-phase mass-transfer coefficient for spray droplets are estimated using the penetration theory, while the gas-phase mass-transfer coefficient for a jet-flow stream is calculated using an analogous empirical correlation. Literature-derived data were used to test the validity of the hybrid-showering model and a good correlation between literature-derived and calculated data was obtained. This study confirms the usefulness of the hybrid-showering modelling approach as regards the risk assessment of personal showering. Moreover, our simulated findings indicated that the jet-flow type showerhead should be more beneficial than the spray type showerhead as regards being associated with a lower VOC exposure risk.
    Relation: Atmospheric Environment, Volume 37, Issue 31, Pages 4325-4333
    Appears in Collections:[職業安全衛生系] 期刊論文

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