Efficiency and form of external solar protector devices for office buildings: a study of cases in Curitiba-PR / Eficiência e forma de protetores solares externos em edifícios de escritórios: estudo de casos em Curitiba-PR

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Shading devices are architectural elements which, when well projected and employed, can contribute to the reduction of the thermal gain in buildings and, consequently, the energy consumption necessary to cooling down hot air inside. Avoiding the direct incidence of sunlight through transparent windows, the shading devices contribute to the reduction of the greenhouse effect as well as the temperature increases caused by it. A brief survey on solar protection devices and their usage in brazilian architecture is presented. The work discuss the actual contribution of protectors in reducing the penetration of direct sunlight through windows or, more generally, transparent glass walls of buildings. The study of efficiency focuses shading devices used for office buildings in the city of Curitiba-PR. That study is accomplished through a graphical method, taking into account the periods in which the solar protection devices receive direct solar radiation and project shadow on the windows. Most part of the protectors considered in the present work do not reach satisfactory performances for the orientations and facades in which they are used.

ASSUNTO(S)

protetor solar transparent windows fechamentos transparentes greenhouse effect efeito-estufa solar protection (shading devices)

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