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Factors affecting the Release and Concentration of Dust in Pig Houses

✍ Scribed by G. Gustafsson

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
235 KB
Volume
74
Category
Article
ISSN
0021-8634

No coin nor oath required. For personal study only.

✦ Synopsis

Dust in pig con"nement buildings may create negative health e!ects on humans as well as on the animals. Measures to reduce the dust concentration in the air are therefore urgent. The mass balance of dust as well as the e$ciency of di!erent dust-reducing measures have been investigated and analysed. The investigations have shown that the generation of dust is a!ected by activity, number of pigs and also by the weight of the pigs. Increased ventilation rate, electrostatic air cleaning and removal of dust by vacuum cleaners have had limited e!ect on the dust concentration. It has been observed that the type of ventilation technique but also the type of housing system in#uence the generation of dust. Spraying of small water droplets as well as an oil mixture have resulted in a signi"cant reduction of the dust concentration. 1999 Silsoe Research Institute Notation A #oor area, m a, b regression coe$cients C ?T average dust concentration, mg/m C G dust concentration in inlet air, mg/m C M dust concentration in outlet air, mg/m C PCQN respirable dust concentration, mg/m C RMR total dust concentration, mg/m G removal by air cleaning, mg/h n number of pigs p B dust production, mg/h q ventilation rate, m/h S settling rate of dust, mg/ m h t time, h u ratio of exhausted dust, % < building volume, m v value depending on the properties of the dust, m/h w pig weight, kg air cleaning e$ciency relation between air#ow rate of an air cleaner and the building ventilation rate

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