Verificação dos valores dos coeficientes de convecção do ar no exterior de edifícios no estado da Paraíba

• Ano de defesa: 2007
• Autor(a) principal: Porto, Eduardo Figueiredo
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraíba; Brasil; Engenharia Cívil e Ambiental; Programa de Pós-Graduação em Engenharia Urbana e Ambiental; UFPB
• Palavras-chave em Português: Coeficiente de convecção externo; Desempenho térmico de edificações; Acondicionamento térmico de edificações; Transferência de calor; Vento; Coefficient of external convection; Thermal performance of buildings; Thermal conditioning of buildings; Heat transfer; Wind; ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/9113

This research investigated and analysed the characteristics and peculiarities of wind flowing that take place in the state of Paraiba in order to verify the local values for the air coefficients of external convection (hc’s), based in non-dimensional numbers like Prandlt, Reynolds and Nusselt, and empirical correlations as suggested by Hilpert. These correlations are widely used and the results demonstrate that the verified values significantly differ from the ones currently recommended by the Brazilian norms concerning the thermal performance of buildings and the basic parameters of projects for central air-conditioners. The results highlighted the need to review these coefficients and take into consideration the interrelationship between the standards of local ventilation and construction regulations when calculating the thermal conditioning of buildings in order to minimize environmental impact and improve energy performance of buildings, which will reduce costs.