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Ammonia Emissions from Swine Houses in the Southeastern United States

Lowry A. Harper*,a, Ron R. Sharpea and John D. Simmonsb

a Southern Piedmont Conservation Research Unit, USDA-ARS-JPCSNRCC, 1420 Experiment Station Road, Watkinsville, GA 30677
b Poultry Research Unit, USDA-ARS, 606 Spring Street, Starkville, MS 39759



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  		Fig. 1. The effect of wintertime fan activity on inside–outside house NH3 differential concentrations. Fan status (on–off) was determined by measuring windspeed through the fans. The variability in lines at the off status are indicative of outside turbulence affecting the anemometers.

 


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  		Fig. 2. Summertime 24-h NH3 emissions and concentrations in a swine finishing house in response to climate and fan activity. Fan status (on–off) was determined by measuring windspeed through the fans. Differences in the magnitude of the fan windspeeds result from different fan efficiencies and fan sizes.

 


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  		Fig. 3. Wintertime 24-h NH3 emissions and concentrations in a swine finishing house in response to climate and fan activity. Fan status (on–off) was determined by measuring windspeed through the fans. Differences in the magnitude of the fan windspeeds result from different fan efficiencies and fan sizes.

 


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  		Fig. 4. Summertime diurnal NH3 emissions and concentrations in a swine sow house in response to climate and fan activity. Fan status (on–off) was determined by measuring windspeed through the fans. Differences in the magnitude of the fan windspeeds result from different fan efficiencies and fan sizes.

 




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