International Journal of Air-Conditioning and Refrigeration

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Numerical and Experimental Analyses Examining Ozone and Limonene Distributions in Test Chamber with Various Turbulent Flow Fields

  • ITO, Kazuhide (Interdisciplinary Graduate School of Engineering Science, Kyushu University)
  • Published : 2008.09.30
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Abstract

Indoor ozone has received attention because of its well-documented adverse effects on health. In addition to the inherently harmful effects of ozone, it can also initiate a series of reactions that generate potentially irritating oxidation products, including free radicals, aldehydes, organic acids and secondary organic aerosols (SOA). Especially, ozone reacts actively with terpene. The overarching goal of this work was to better understand ozone and terpene distributions within rooms. Towards this end, the paper has two parts. The first describes the development of a cylindrical test chamber that can be used to obtain the second order rate constant $(k_b)$ for the bi-molecular chemical reaction of ozone and terpene in the air phase. The second consists of model room experiments coupled with Computational Fluid Dynamics (CFD) analysis of the experimental scenarios to obtain ozone and terpene distributions in various turbulent flow fields. The results of CFD predictions were in reasonable agreement with the experimental measurements.

Keywords

References

  1. Weschler CJ (2000a). Ozone in Indoor Environments: Concentration and Chemistry. International Journal of Indoor Air Environment and Health, Indoor Air 10 (4), pp. 269-288
  2. Weschler CJ, and Shields HC (2000b). The Influence of Ventilation on Reactions Among Indoor Pollutants, Modeling and Experimental Observation. Indoor Air 10 (2), pp. 92-100 https://doi.org/10.1034/j.1600-0668.2000.010002092.x
  3. Weschler CJ (2004). Chemical Reactions Among Indoor Pollutants: What We've Learned in the New Millennium. Indoor Air 14 (Suppl 7), pp. 184-194 https://doi.org/10.1111/j.1600-0668.2004.00287.x
  4. Wolkoff P, Clausen PA, Wilkins CK, Hougaard KS, and Nielsen G.D (1999). Formation of Strong Airway Irritants in a Model Mixture of (+) -${\alpha}- pinene/Ozone$. Atmospheric Environment, 33, pp. 693-698 https://doi.org/10.1016/S1352-2310(98)00292-1
  5. Weschler CJ, (2006) Ozone's Impact on Public health: Contributions from Indoor Exposures to Ozone and Products of Ozone- Initiated Chemistry, Environmental Health Perspectives, Colume 114, Number 10, pp1489-1496 https://doi.org/10.1289/ehp.9256
  6. Sorensen DN and Weschler CJ (2002). Modeling Gas Phase Reactions in Indoor Environments Using Computational Fluid Dynamics. Atmospheric Environment, 36 (1): 9-18 https://doi.org/10.1016/S1352-2310(01)00479-4
  7. Ito K., (2007a) Experimental and CFD Analyses Examining Ozone Distribution in 2D Model Room with Laminar and Turbulent Flow Field : Journal of Asian Architecture & Building Engineering, JAABE, vol. 6, no.2, pp 387-394 https://doi.org/10.3130/jaabe.6.387
  8. Ito K., (2007b) Experimental and CFD Analyses Examining Ozone and Terpene Distributions in Model Rooms with Laminar and Turbulent Flow Fields: IAQVEC 2007, pp302
  9. Cano-Ruiz JA, Kong D, Balas RB, Nazaroff WW (1993). Removal of Reactive Gases at Indoor Surfaces: Combining Mass Transport and Surface Kinetics. Atmospheric Environment 27A (13), 2039-2050
  10. Ito K, Kato S, and Murakami S (2000). Model Experiment of Flow and Temperature Field in Room for Validating Numerical Simulation Analysis of Newly Proposed Ventilation Effectiveness. J. Archit. Plann. Environ. Eng., Architectural Institute of Japan, No. 534, 49-56
  11. Murakami S, Kato S, and Chikamoto T (1996). New Low Reynolds-number $k-{\varepsilon}$ Model Including Damping Effect Due to Buoyancy in a Stratified Flow Field. Int. J. Heat Mass Transfer, 39, 3483-3496 https://doi.org/10.1016/0017-9310(95)00356-8
  12. Ito K, Sorensen DN, Weschler CJ. (2005) Measurements of Mass Accommodation Coefficients Using a Flat-Plate Test Chamber : Indoor Air 2005, China, 2335-2339
  13. Atkinson R, Hasegawa D, and Aschmann S.M (1990) Rate constants for the gas-phase reactions of O3 with a series of monoterpenes and related compounds at 296 K, International Journal of Chemical Kinetics, 22, 871 https://doi.org/10.1002/kin.550220807