Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Measurement of Particulate Emission Rates from Mechanically Ventilated Swine BarnsPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: Paper number 024209, 2002 ASAE Annual Meeting . (doi: 10.13031/2013.10529) @2002Authors: Bernardo Z. Predicala, Ronaldo G. Maghirang Keywords: air pollution, air quality, dust, emission, measurement, swine Methods for measuring emission rates of particulate matter (PM) from mechanically ventilated livestock buildings were evaluated in the laboratory using a test chamber. Dust concentrations were measured inside the chamber and at the exhaust duct. Concentrations at the exhaust duct were determined using high-volume traverse downstream of the exhaust fan, lowvolume traverse downstream of the fan, and fixed sampling upstream and downstream of the fan. The high-volume traverse served as the reference method. Both traverse methods were conducted under isokinetic conditions; fixed sampling was done under both isokinetic and sub-isokinetic conditions. Results indicated that both room sampling and exhaust sampling under sub-isokinetic conditions severely overestimated exhaust dust concentrations. Additionally, the low-volume traverse and fixed sampling under isokinetic conditions agreed well with the high-volume traverse (difference ranging from 7.5-11.9%). Methods involving room sampling, fixed sampling at exhaust, and highvolume traverse at exhaust were also compared in a swine finishing barn. Room sampling overestimated concentrations at the exhaust, and dust concentration from fixed sampling did not differ significantly with the high-volume traverse method. It appears that fixed sampling under isokinetic conditions can be used as an alternative to the high-volume PM traverse method to accurately measure PM concentrations at the exhaust, from which the PM emission rate can be determined. (Download PDF) (Export to EndNotes)
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