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| Alaa Kiwan Kiwan; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Werner Berg; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Reiner Brunsch; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Sezin Özcan; K.U. Leuven, Faculty of Bioscience Engineering, Leuven, Belgium.; Hans-Joachim Müller; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Manfred Gläser; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Merike Fiedler; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Christian Ammon; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Daniel Berckmans; K.U. Leuven, Faculty of Bioscience Engineering, Leuven, Belgium.. |
| Naturally ventilated barns have the advantage of providing an energy-efficient and low-noise micro-environment for animals. Such barns are very common, especially for cattle, which are a major source of ammonia and methane emissions as well as other airborne pollutants. Emission fluxes are calculated as the product of the ventilation rate (VR) and the gas concentration. The VR of naturally ventilated barns are directly influenced by atmospheric conditions. Therefore, the estimation of VR involves high uncertainties; furthermore, there is no reference method for VR estimation. For these reasons, three different methods were investigated to estimate VR through naturally ventilated dairy barns: (1) the tracer gas... |
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Palavras-chave: Natural ventilation; Tracer gas technique; Radioactive isotope 85Kr; Air velocity; Air exchange rate; Dairy barn. |
| Ano: 2012 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1981 |
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