Comparison of airflow homogeneity in Compost Dairy Barns with different ventilation systems using the CFD model

dc.creatorFagundes, B.
dc.creatorDamasceno, F. A.
dc.creatorAndrade, R. R.
dc.creatorSaraz, J. A. O.
dc.creatorBarbari, M.
dc.creatorVega, F. A. O.
dc.creatorNascimento, J. A. C.
dc.date2020-08-12T12:33:59Z
dc.date2020-08-12T12:33:59Z
dc.date2020
dc.date.accessioned2023-09-28T20:05:46Z
dc.date.available2023-09-28T20:05:46Z
dc.identifierFAGUNDES, B. et al. Comparison of airflow homogeneity in Compost Dairy Barns with different ventilation systems using the CFD model. Agronomy Research, [S. l.], v. 18, 2020. Special issue 1.
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/42367
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9044346
dc.descriptionIn the pursuit of high milk productivity, producers are using confinement systems in order to improve performance and animal welfare. Among the housing systems, the Compost bedded-pack barns (CBP) stand out. In these barns a bedding area is provided inside, where cows move freely. Generally this area is covered with carbon source material (such as sawdust or fine dry wood shavings) which together with manure, thanks a regular mechanically stirring, ensures the aerobic composting process. The ventilation in these facilities has the function of dehumidifying the air, improving the air quality, drying the bedding, improving the thermal comfort conditions of the confined animals. This work aimed at validating a computational model using Computational Fluid Dynamics (CFD) to determine the best homogeneity of airflows generated by different forced ventilation systems used in CBP barns. Two CBP barns were compared with different ventilation systems: high volume low speed (HVLS) and low volume high-speed (LVHS) fans. The results showed that the proposed model was satisfactory to predict the flows generated by both types of fans. It was concluded that the use of HVLS fans produced a more homogeneous airflow when compared to LVHS fans. The use of mechanical ventilation in tropical conditions is necessary for the proper functioning of the system. In this study, the systems used promoted the increase in air speed to levels close to adequate.
dc.formatapplication/pdf
dc.languageen_US
dc.publisherFaculty of Agronomy, Estonian Agricultural University
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rightsacesso aberto
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceAgronomy Research
dc.subjectAirflow
dc.subjectAnimal housing
dc.subjectCompost-bedded pack barn
dc.subjectDairy cows
dc.subjectFluxo de ar
dc.subjectAlojamento de animais
dc.subjectBovinos leiteiros
dc.titleComparison of airflow homogeneity in Compost Dairy Barns with different ventilation systems using the CFD model
dc.typeArtigo


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