Análise do COP anual de condicionadores de ar tipo Split fixo e inverter nas diferentes zonas bioclimáticas brasileiras

Abstract

This work presents an analysis of the relationship between the performance of split, fixed and inverter air conditioning equipment for the air conditioning of a commercial building in the different Brazilian bioclimatic zones. Analyzes were performed by computer simulation using the EnergyPlus program. Eight cases followed by the reference model were simulated. The reference model adopted was created from a photographic survey of standard commercial buildings with more than four floors. From this survey, the typology that was adopted represents a ten-storey building with a perimeter of dimensions of 27 by 7.50 meters and, at the foot of 2.60 meters. In order to analyze the energy performance of the reference model, data were included on the building components, occupancy pattern, energy loads of the lighting system and equipment, air conditioning, with their respective performance curves, as supplier, and infiltration, according to norm. With these data inserted in the EnergyPlus, it was possible to measure the thermal load of the air conditioning equipment and their energy performance, analyzed through the simulated annual COP of this equipment. With the simulation, it was possible to highlight the factors that influence the energy consumption of an air conditioning system with regard to climatic conditions, mainly the impact of external temperature on the performance of the equipment. In the results, it was possible to identify that there is a significant influence, especially when comparing high temperature and external low temperature regions, and in a second moment, high and low values of internal relative humidity of the ambient air, high performance favors the performance of the equipment evaluated. Significant results were found in the replacement of fixed split devices with split inverter devices, in which a reduction of up to 44% of savings was achieved in specific regions of the country, its annual simulated COP showed a more efficient indicator at all simulated hours.