Spatial distribution of particulate matter and ammonia concentrations in a swine building

Sheryll B. Jerez, Yuanhui Zhang, Xinlei Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pollutants, especially particles, are rarely uniformly distributed within ventilated airspaces due to non-uniform flow field, particle inertia, gravitational settling, and diffusion. Thus, selecting suitable sampling locations for representative sampling is a challenge. The objective of this study was to determine the spatial distribution of particulate matter and ammonia concentrations in a swine building. The spatial distribution of airborne pollutants is not only useful in the design of sampling strategies that require limited sampling locations, but also for the study of pollutant transport indoors. The commercial swine building where the study was conducted was a tunnel-ventilated wean-to-finish facility with a capacity of between 2300 and 2400 pigs. The Total suspended particulate matter (TSP) and ammonia concentrations were measured at 50 and 30 sampling locations indoors, respectively, in December and June. Results showed that the gradient across the length of the building was more pronounced in December than the gradient along the length of the building. In June, the gradient along the length of the building was more pronounced resulting in essentially uniform concentration in a cross section. The spatial distributions of the TSP mass concentration in both December and June were essentially symmetrical about the longitudinal section of the building. The spatial gradient of NH3 concentration was more pronounced along the length of the building during winter. During summer, the spatial distribution was almost uniform except close to the exhaust side of the building. These results suggest that the choice of representative sampling locations indoors would vary depending on the air movement in the building, which is dictated by the ventilation scheme.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010
PublisherAmerican Society of Agricultural and Biological Engineers
Pages4250-4276
Number of pages27
ISBN (Print)9781617388354
StatePublished - Jan 1 2010

Publication series

NameAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010
Volume5

Keywords

  • Ammonia
  • Ammonia emission
  • Particles
  • Spatial variability
  • Swine

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)

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  • Cite this

    Jerez, S. B., Zhang, Y., & Wang, X. (2010). Spatial distribution of particulate matter and ammonia concentrations in a swine building. In American Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010 (pp. 4250-4276). (American Society of Agricultural and Biological Engineers Annual International Meeting 2010, ASABE 2010; Vol. 5). American Society of Agricultural and Biological Engineers.