Rapid identification of single constant contaminant source by considering characteristics of real sensors |
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Authors: | Hao Cai Xian-ting Li Ling-juan Kong Xiao-jun Ma and Xiao-liang Shao |
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Affiliation: | [1]Department of Building Science, School of Architecture, Tsinghua University, Beijing 100084, China [2]Engineering Institute of Engineering Corps, PLA University of Science & Technology, Nanjing 210007, China [3]Nanjing Artillery Academy, Nanjing 211132, China |
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Abstract: | For the release of hazardous contaminant indoors, source identification is critical for developing effective response measures.
A method which can quickly and accurately identify the position, emission rate, and release time of a single constant contaminant
source by using real sensors was presented. The method was numerically demonstrated and validated by a case study of contaminant
release in a three-dimensional office. The effects of the measurement errors and total sampling period of sensor on the performance
of source identification were thoroughly studied. The results indicate that the adverse effects of the measurement errors
can be mitigated by extending the total sampling period. For reaching a desirable accuracy of source identification, the total
sampling period should exceed a certain threshold, which can be determined by repeatedly running the identification method
until the results tend to be stable. The method presented can contribute to develop an onsite source identification system
for protecting occupants from indoor releases. |
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Keywords: | source identification contaminant source indoor environment computational fluid dynamics (CFD) air distribution |
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