Abstract
A macroscopic model (Nazaroff and Cass, 1989) was used to predict dust concentration distribution in a mechanically ventilated swine nursery room under isothermal flow conditions. Four particle diameter size ranges, 0.5 to 0.9, 0.9 to 1.6, 1.6 to 2.8, and 2.8 to 5.0 μm, were considered. Effects of dust generation rate, source location, and presence/absence of obstructions (mock pigs) on dust concentration distribution were evaluated. Predicted results were compared with experimental data from full-scale laboratory tests. Based on the ASTM (1995) criteria, predicted values for the 0.5 to 0.9, 0.9 to 1.6, and 1.6 to 2.8 particle size ranges and total dust (0.5 to 5.0 μm) agreed well with measured values; however, measured values for the 2.8 to 5.0 μm size range were higher than predicted values. Source location significantly (p < 0.05) influenced the dust concentration distribution, whereas dust generation rate and presence/absence of the mock pigs did not significantly (p < 0.05) influence the dust distribution.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1811-1821 |
| Number of pages | 11 |
| Journal | Transactions of the American Society of Agricultural Engineers |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| State | Published - Nov 1999 |
| Externally published | Yes |
Keywords
- Dust concentration distribution
- Indoor air quality
- Livestock buildings
ASJC Scopus subject areas
- Agricultural and Biological Sciences (miscellaneous)