Avaliação do desempenho da ventilação natural e do sombreamento em casas de Maceió projetadas segundo princípios abordados na cartilha de Armando de holanda

Abstract

This survey deals with the dimensionality of the natural ventilation and its fitness to building houses in the Brazilian Northeast. It is a case study due to the limited sample of the object evaluated, since that its abridgement involved only two houses located in Maceió city in the state of Alagoas. As matter of fact, by the end of 1970 through 1980, a pernambucano architect under the name of Armando de Holanda wrote a booklet guide containing 9 (nine) bioclimatic strategies to solve the problem of the hot and damp ventilation that reaches the tropical regions causing distress to their inhabitants, above all inside the houses. According to Holanda s point of view the trouble could be lessened if the building of the houses were more adequate and suitable to the local temperature of the environment. The statements lined out by Holanda consisted of nine (9) strategic. In the inquiry made up, some of Holanda s a priori strategic propositions have been selected and evaluated such the natural air performance, the shading and other items of two houses built by two architects who drew and carried out an experimental project for their own dwellings. Both houses were object of analysis and evaluation by means of a detailed methodoly concerning the climatic data and the bioclimatic strategies followed by an essay of ventilation and sunny rays with virtual models through computerized SketchUp application of the solar chart. As a result, the house 1 (one) showed up efficient average of natural ventilation and shading, while the house 2 (two) attested the average and positive performance of natural ventilation as well as shading. Yet in both houses the direct observation registered adequate bioclimatic strategies, but some determined solutions seemed inadequate to a hot and damp climate as inward divisions no evidence of eaves. Hypothetically the conclusion is that Holanda s guidance may cause good effect when well fitted, in spite of being necessary some practical experiments to assure thermal comfort to the buildings situated in hot and damp regions, with the adoption of the suggested methodoly and good tools of evaluation preceded by an architectonic planning.