Parametros para a escolha de superficies translucidas visando o conforto termico e visual na edificação / Parameters for selecting translucent susfaces focusing on the thermal and visual comfort on the building

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

This paper is directed towards translucent glasses and alveolar polycarbonates due to the lack of extensive research in this field. Nonetheless, these materials have been ostensively used in Europe and United States. In Brazil, translucent glasses and alveolar polycarbonates have been increasingly applied to building facades since the decade of 90’s as a novel and renewed material. Thus, it is important to characterize translucent glasses and alveolar polycarbonates before solar radiation considering the thermal and visual comfort inside the building. In order to do so, laboratory measurements were performed using a spectrophometer to measure the glass transmission and a profilometer to measure the glass profiles. In loco measurements were also carried out through test cells in which the air, glass surface and wall temperatures were evaluated. The novel results characterized the transmission to each specific region, ultraviolet, visible and infrared, which verified the thermal and visual parameters. The glass surface roughness has a distinguished influence on the radiation transmission. The test cells closed with translucent glass of the lowest PRT values demonstrated the highest values of internal air temperature. It was possible to elaborate recommendations that will serve as groundwork for architects and designers in the specification and indication of translucent surfaces taking into account the thermal and visual comfort. At last, the results also contributed to disclose technical information that is scarce in the national and international literature.

ASSUNTO(S)

glass ganho de calor conforto termico vidro thermal confort heat gain

ACESSO AO ARTIGO

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