Análise do desempenho termoenergético da edificação dos laboratórios da engenharia elétrica através de simulação com software Energyplus

Abstract

In recent years, the Brazilian population has been suffering from subsequent increases in energy tariffs, in parallel with this, the importance of developing more efficient projects in terms of energy has become increasingly indispensable. In the present work, a computational simulation is carried out, using the EnergyPlus 9.4.0 software, of the building of the electrical engineering laboratory of the Federal University of Pampa, located in Alegrete. The objective of the study is to simulate the thermoenergetic performance of the building, in order to highlight the correct powers, for thermal comfort, in refrigeration and also for heating in the climatized sections of a PTHP (Packaged Terminal Heat Pump) system; then compare with the results obtained for a VRF (Variable Refrigerant Flow) refrigeration system. The design days Tbs and Tbu are classified by the psychrometric parameters and calculated in the 4 summer months for the days: December 21st, January 21st, February 21st and March 21st, for the winter the design day was July 21st, the climate file used was from the city of Alegrete/RS made available by INMET 2016. Following, improvements are proposed in the envelope of the building, with the intention of reducing the energy consumption of the cooling system and the total electrical energy consumption of the building. Therefore, through comparisons of the electricity consumption of the VRF and PTHP systems, it was found that the VRF system resulted in an annual consumption of 24.37% less than the PTHP system.