Assessment of long-term gas sampling design at two commercial manure-belt layer barns.

摘要: Abstract Understanding temporal and spatial variations of aerial pollutant concentrations is important for designing air quality monitoring systems. In long-term continuous in large livestock poultry barns, these systems usually use location-shared analyzers sensors can only sample at limited number locations. To assess the validity gas sampling design a commercial layer farm, new methodology was developed to map using portable under steady-state or quasi-steady-state barn conditions. Three assessment tests were conducted from December 2008 February 2009 two manure-belt barns. Each 140.2 m long 19.5 wide had 250,000 birds. test included four measurements ammonia carbon dioxide 20 locations that covered all operating fans, including six fans used represented three zones along lengths generate da...