CFD study of a tunnel-ventilated compost-bedded pack barn integrating an evaporative pad cooling system

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorVega, Felipe Andrés Obando-
Autor(es): dc.creatorRíos, Ana Paola Montoya-
Autor(es): dc.creatorSaraz, Jairo Alexander Osorio-
Autor(es): dc.creatorAndrade, Rafaella Resende-
Autor(es): dc.creatorDamasceno, Flávio Alves-
Autor(es): dc.creatorBarbari, Matteo-
Data de aceite: dc.date.accessioned2026-02-09T11:13:40Z-
Data de disponibilização: dc.date.available2026-02-09T11:13:40Z-
Data de envio: dc.date.issued2022-11-02-
Data de envio: dc.date.issued2022-11-02-
Data de envio: dc.date.issued2021-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/55398-
Fonte completa do material: dc.identifierhttps://www.mdpi.com/2076-2615/12/14/1776-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1136363-
Descrição: dc.descriptionEvaporative cooling is one of the most efficient techniques to reduce heat stress in cows in agricultural facilities. Additionally, compost-bedded pack barn has been shown to improve the welfare and production of cows. Two techniques were combined and analysed by developing a computational fluid dynamics (CFD) model of a tunnel-ventilated compost-bedded packed barn that integrated the heat and airflow dynamics of an evaporative pad cooling system. This allowed us to study the distribution of dry-bulb temperature, relative humidity and airflow velocity inside the barn based on the external environmental conditions, thickness of the pad, water temperature and specific manufacturer characteristics of the pad, providing optimal cooling pad location, size and operating conditions in the barn. Employing experimental data the CFD model was validated showing good agreement. The Equivalent Temperature Index for dairy Cattle (ETIC) was used to determine the level of stress of the cows considering the airflow velocity. It was found a moderate stress due to high relative humidity and low airflow velocity. From the predicted results, it was recommended to increase the airflow velocity above 3 m s−1 when simultaneously the external dry-bulb temperature and relative humidity exceed 30 °C and 55%, respectively, simultaneously. Additionally, installation of baffles at the pad outlet to drive the airflow to the floor was suggested to improve the drying of the compost-bedded closed to the pads, where a low airflow velocity region was established.-
Idioma: dc.languageen-
Publicador: dc.publisherMultidisciplinary Digital Publishing Institute-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceAnimals-
Palavras-chave: dc.subjectCompost-bedded pack barn-
Palavras-chave: dc.subjectTunnel-ventilated-
Palavras-chave: dc.subjectAnimal welfare-
Palavras-chave: dc.subjectThermal comfort-
Palavras-chave: dc.subjectDairy cattle-
Palavras-chave: dc.subjectEquivalent Temperature Index (ETIC)-
Palavras-chave: dc.subjectComputational Fluid Dynamics (CFD)-
Palavras-chave: dc.subjectEvaporative cooling-
Título: dc.titleCFD study of a tunnel-ventilated compost-bedded pack barn integrating an evaporative pad cooling system-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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