Affiliation:
1. USP- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Pirassununga, SP, Brasil
Abstract
This study evaluated the thermal comfort conditions in two individuals calve shelter models covered with fiber cement tile without ceiling and using a ceiling made of low density particleboards from agro-industrial by-products (40% sugarcane bagasse and 60% Pinus sp. shavings) bonded with polyurethane bi-component resin based on castor oil. In the ambience study, dry bulb temperature (DBT), black globe temperature (BGT) and relative humidity (RH) of the calf hutches were evaluated. Indices, such as Black Globe Temperature and Humidity Index (BGHI) and Radiant Thermal Load (RTL), and also thermographic images of the internal surface of the shelters were studied. The use of fuzzy modeling has been proposed, allowing the comparison of the BGT, BGHI and RTL indices, and via these values, attributing the comfort situation, thus seeking to optimize the experimental evaluations. The results indicate that the presence of the ceiling did not contribute to a heat level reduction inside the shelters, which presented above the comfort conditions for the animals during the summer. Through observation, there was a reduction of the internal temperature of the surfaces of the shelter with a ceiling.
Funder
Fundação de Amparo à Pesquisa do Estado de São Paulo
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Publisher
Universidade Estadual Paulista - Campus de Tupa
Reference21 articles.
1. BAÊTA, F. C. Responses of lacting dairy cows to the combined effects of temperature, humidity, and wind velocity in the warm season. 1985. Thesis (PhD). Department of Agricultural Engineering, University of Missouri, Columbia, 1985.
2. BARBIRATO, G. H. A.; FIORELLI, J.; LINO, G.; CRAVO, J. C. M; BERTOLINI, M. S.; LAHR, F. A. R. Desempenho térmico de bezerreiros cobertos com telha de fibrocimento e forro ecológico de subprodutos agroindústrias associado a materiais isolantes. Revista Brasileira de Engenharia de Biossistemas, v. 9(3): 261-267, 2015.
3. BARNABÉ, J. M. C; PANDORFI, H.; ALMEIDA, G. L. P.; GUISELINI, C.; JACOB, A. L. Conforto térmico e desempenho de bezerras Girolando alojadas em abrigos individuais com diferentes coberturas. Revista Brasileira de Engenharia Agrícola e Ambienta, v. 19(5): 481-488, 2015.
4. BARNABÉ, J. M. C; PANDORFI, H.; ALMEIDA, G. L. P.; GUISELINI, C.; JACOB, A. L. Temperatura superficial de materiais utilizados para cobertura individual de bezerreiros. Revista Brasileira de Engenharia Agrícola e Ambiental, v. 18(5): 545-550, 2014.
5. BEDFORD, T.; WARNER, C.G. The globe temperature in studies of heating and ventilation. Pittsburg: Industrial Health Research Board, 1934. 7 p.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献