DESEMPENHO TÉRMICO DE UM FORRO COMPOSTO POR GESSO E FIBRA DE SISAL PARA USO EM RESIDÊNCIAS DE INTERESSE SOCIAL

Abstract

Several thermal analysis tools are used for composite ceiling panels made with gypsum matrix and reinforced with sisal fibers in the laboratory, but it is necessary to deepen the analysis with computational tools for the evaluation of thermal performance. The aim of this work was to carry out computational simulations of a social interest residence with a lining conformed by three composite types: gypsum, gypsum–blanket-gypsum, gypsum-blanket-gypsum, gypsum-blanket-gypsum-blanket-gypsum, so the thermal performance of these materials can be analyzed. The residence is located in three cities that are the biggest producer of gypsum and sisal fiber in Brasil: Salvador, Pernambuco and Campina Grande. During the simulation the air temperatures inside the residence and in the two rooms with the most unfavorable orientation were registered. The climatic data of solar radiation, wind speed, temperature and humidity were obtained through the National Institute of Meteorology. Using the Energy Plus program, we reproduced the residential model with the climatic file for each city under analysis. The air temperature values obtained in the simulations for the residence and the rooms were compared. In the residence and in the rooms, the composites decrease the internal temperatures of the built environment by 2ºC. Regarding the analysis of cooling hours, the gypsum-blanket-balnket-gypsum- and gypsum-blanket-gypsum-balnket-gypsum composites do not require cooling during the day.