Abstract
Experimental and numerical modeling were conducted to determine the dust concentration distribution in asimulated, mechanically ventilated, swine nursery room under non-isothermal conditions. Effects of dust generation rate,temperature difference between supply air and inside air, dust source location, and presence/absence of obstructions(mock pigs) on dust concentration were also evaluated. Results from numerical modeling agreed well with measuredvalues from full-scale tests, based on the ASTM (1995) guidelines. Analysis of the measured values indicated that the dustsource location significantly (p < 0.05) influenced the dust concentration distribution; dust concentration was higher ator near the source. However, the effects of temperature difference between supply air and inside air (7.0 vs. 16.0C), dustgeneration rate (low vs high), and presence/absence of the mock pigs on dust concentration distribution were notstatistically significant (p > 0.05).
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