Análise de desempenho termoenergético da edificação do centro de eventos da comunidade evangélica de agudo com simulação através do software energyplus

Abstract

The present work aims to analyze the thermoenergetic performance of the building referring to the event center of the evangelical community in the city of Agudo, in the state of Rio Grande do Sul. The study was based on the Energyplus software, version 9.4, using of climatic data from the city of Santa Maria, in the state of Rio Grande do Sul, and 14 days of project for the dimensioning of the climatization systems and analysis of parameters of thermal comfort. Two different virtual models were created according to suggested adjustments, such as installing insulated ceilings and replacing lighting systems, with a total of 29 thermal zones and 5 of them air-conditioned. At first, simulations were performed to obtain the cooling and heating power demands, which were then used as a basis for the selection of Split and VRF type equipment. It was observed that the powers selected for the Split system showed reductions of 19340 W (5.33%) in cooling and 21690 W (5.16%) in heating, from the ideal model in relation to the current model, while the VRF system showed reductions of 32600 W (8.78%) in cooling and 34000 W (8.34%) in heating. Subsequently, the analysis of the internal conditions allowed the observation of the reduction in the operating temperature of the thermal zone of the main hall by 2.5 °C with the implementation of the lining and insulation, complying with the limits defined by ASHRAE and satisfying the setpoint temperature throughout the occupancy period. The relative humidity of the air was above the ideal parameters in both models and systems of air conditioners, which indicates the need for an adjacent system for the treatment of indoor air (dehumidification). Finally, through comparisons between electricity consumption, it was found that the Split system would result in an annual consumption 27.57% higher in relation to the VRF system, while the LED lighting system would reduce by 50.53% the consumption compared to the fluorescent type system. Keywords: Energyplus, Thermoenergetic performance, Thermal confort, HVAC.