Conforto térmico em espaços abertos: estudo de caso em um Parque Urbano na cidade de João Pessoa-PB

Abstract

Studies of thermal comfort in climatic chambers have the limitation of disregarding the user's adaptation to the environmental conditions. In order to overcome limitations of currentelly thermal comfort models, new investigations has been conducted to identify the thermal comfort in open spaces or free running buildings. Inserted in this context, this study has as general objective to evaluate the thermal sensation of the visitors of an urban park (Bica) in João Pessoa-PB, a city of hot and humid weather climate in Northeastern Brazil. As methodology, we used microclimatic monitoring of the variables: air temperature, globe temperature, humidity, wind speed and solar radiation. Questionnaires were also applied to visitors to assess the feeling of thermal comfort within the park. The microclimatic data were collected with the aid of a portable meteorological station DAVIS and a thermal stress meter - TGD300. To carry out the statistical analyzes was used the STATISTIC 7.0 program. Through statistical analysis it was possible to identify a comfort range between 23-31°C. The logistic regression model showed that three climate variables (air temperature, wind speed and mean radiant temperature) have significant effect on the thermal sensation vote felt by respondents. When the thermal sensation vote was compared to the PMV/PPD index, it was verified in loco was always in a lower category to the PMV. The results found in this research can help in planning the city in the search for a more banlanced urban environmrt, rspecially with regard to thermal confort.