Avaliação do consumo energético em obras de construção civil de grande porte

Abstract

The present work aims to analyze, from the perspective of the end use of energy, the results of the efficiency indicator created in order to investigate the performance of a group of equipment widely used in large construction projects in Brazil. The analyze comprehends only construction period itself due this step is to consider a phase of intense energy consumption. This work included a database related to the fuel consumption of 26,121 equipment during their operation, at 84 work sites in the large construction projects. From the database described, we performed data analysis of satellite equipment monitored and with efficiency information. Finally, it was estimated the variation of efficiency of the equipment in question. The results show a predominance of diesel consumption when compared to other fuels inputs. Considering our methodology, generators, cranes, compressors and trucks were the items that had higher levels of efficiency, with 99.0%, 93.5%, 93.2% and 92.3%, respectively. These results show that most of these devices operate close to the optimal consumption per hour recorded in the project.