Data/hora: 04/06/2024 10:48:21

Provedor de dados: | 63
País: | Brazil
Título: | On the controlling of temperature: A proposal for a real-time controller in broiler houses
Autores: | Detsch,Denise Trevisoli; Conti,Dante; Diniz-Ehrhardt,Maria Aparecida; Martínez,José Mario.
Data: | 2018-12-01
Ano: | 2018
Palavras-chave: | Partial differential equations (PDE); Temperature control; Optimization; Self-correcting model; Ventilation systems.
Resumo: | ABSTRACT: Environmental conditions in broiler houses, specifically temperature, are key factors that should be controlled to ensure appropriate environment for broiler rearing. In countries with tropical/subtropical climate, like Brazil, high temperatures produce heat stress to animals, affecting the production process. This research proposes a real-time model to control temperature inside broiler houses. The controller is a self-correcting model that makes real-time decisions on the ventilation system operation (exhaust fans) together with temperature prediction at the facility. The model involves partial differential equations (PDE) whose parameters are updated according to data registered in real-time. Some experiments were carried out at a pilot farm in the municipality of Jundiaí, São Paulo State, Brazil, for different periods during winter and summer. The results based on simulations in comparison with the current automatic ventilation system show that the model is consistent to keep temperature under control for an efficient production. The model achieved a bias of 0.6 °C on average in comparison with the ideal temperature, whereas the automatic controller measured a bias of 3.3 °C, respectively. Future lines suggest that this approach could be useful in many other situations that involve environmental control for livestock production.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000600445
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/1678-992x-2016-0456
Formato: | text/html
Fonte: | Scientia Agricola  v.75 n.6 2018
Fonte: | info:eu-repo/semantics/openAccess