Modeling VOCs emissions in a room with a single-zone multi-component multi-layer technique |
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| Affiliation: | 1. Key Laboratory of Heat Transfer and Energy Conservation of Education Ministry, Research Institute of Chemical Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Building Services Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China;1. ETH Zurich, Architecture and Building Systems, Zurich, Switzerland;2. Current affiliation: Center for the Built Environment, University of California Berkeley, California, USA;3. Current affiliation: School of Architecture and Landscape Architecture, University of British Columbia, Canada;4. Current affiliation: School of Design and Environment, National University of Singapore, Singapore, Singapore;5. Princeton University, School of Architecture, Princeton, NJ, USA;6. Princeton University, Andlinger Center for Energy and the Environment, Princeton, NJ, USA;1. Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;2. Department of Civil Engineering, Architecture and Georresources, CERIS, ICIST, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal;1. U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory, Research Triangle Park, NC 27711, USA;2. Arcadis, 4915 Prospectus Drive, Suite F, Durham, NC 27713, USA;1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, China;2. School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710054, China |
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| Abstract: | Building envelopes are usually comprised of several layers with different materials, which can significantly affect volatile organic compounds (VOCs) concentrations in indoor environments. These layers may act as source and sink alternatively depending on the different sorption and diffusion potentials. The model proposed here is a single zone one and it considers the different emission properties of building components, namely, the different sorption and diffusion characteristics of the side walls, the floor and the ceiling. In addition, each component comprises of several layers, which represents different construction materials. Two VOCs, ethyl acetate and n-octane, representing polar and nonpolar compounds respectively, are modeled to study the emission profiles in a room with several building materials. The effects of various construction materials, and the different convective mass transfer coefficients between room air and different building components, on the emission characteristics are investigated. |
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