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Air velocity spatial variability in open Compost-Bedded Pack Barn system with positive pressure ventilation.
Oliveira, Carlos Eduardo A; Tinôco, Ilda DE Fátima F; Damasceno, Flávio A; Oliveira, Victor C DE; Rodrigues, Pedro Henrique M; Ferraz, Gabriel A S; Sousa, Fernanda C DE; Andrade, Rafaella R; Nascimento, João Antônio C DO; Silva, Leonardo F DA.
Afiliación
  • Oliveira CEA; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Tinôco IFF; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Damasceno FA; Universidade Federal de Lavras, Departamento de Engenharia, Av. Doutor Sylvio Menicucci, 1001, Aquenta Sol, 37200-000 Lavras, MG, Brazil.
  • Oliveira VC; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Rodrigues PHM; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Ferraz GAS; Universidade Federal de Lavras, Departamento de Engenharia Agrícola, Av. Doutor Sylvio Menicucci, 1001, Aquenta Sol, 37200-000 Lavras, MG, Brazil.
  • Sousa FC; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Andrade RR; Universidade Federal de Goiás, Escola de Agronomia, Av. Esperança, s/n, Campus Samambaia, 74690-900 Goiânia, GO, Brazil.
  • Nascimento JACD; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Silva LFD; Universidade Federal de Viçosa, Departamento de Engenharia Agrícola, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
An Acad Bras Cienc ; 95(suppl 1): e20220415, 2023.
Article en En | MEDLINE | ID: mdl-37466534
In Compost-Bedded Pack Barn (CBP) systems, air velocity is linked with the thermal comfort of housed dairy cattle and bedding quality and, therefore, assessing ventilation efficiency is essential. In this context, the objective of this study was to evaluate and characterize dependence and spatial distribution of air velocity at the 1.5 m height (vair,M) and at bedding level (vair,B) in an open CBP system with positive pressure ventilation. The study was conducted in 2021, in a facility located in the Zona da Mata region, Minas Gerais, Brazil. The facility area was divided into a mesh composed of 55 equidistant points, where vair,M and vair,B data were collected in the morning (09:00 a.m.) and afternoon (03:00 p.m.) periods, during three weeks in Brazilian winter. Geostatistics techniques were used to assess dependence and spatial distribution. In both periods evaluated, there were a strong occurrence of spatial dependence and non-uniform vair,M and vair,B distributions. The vair,M and vair,B values were lower than recommended (1.8 m∙s-1) in more than 65.0% of the area. Adequate ventilation levels were observed only in the first 20.0 m of the facility, from Southeast to Northwest, because of the fan lines present.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compostaje Límite: Animals Idioma: En Revista: An Acad Bras Cienc Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compostaje Límite: Animals Idioma: En Revista: An Acad Bras Cienc Año: 2023 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Brasil