SISTEMAS DE REFRIGERAÇÃO: Análise de funcionamento de dois sistemas de refrigeração similares, funcionando com fluídos refrigerantes diferentes aplicados em duas câmaras frigoríficas

Abstract

The main objective of this paper work is the analysis and compare of the functioning of two cold rooms working with different fluids. The present study was carried out according to the characteristics of the fluids used for cooling and freezing. The study of R-22 and R404- A fluids was carried out in order to obtain the characteristics of each one of them, to be used to obtain a lower temperature in the presented cold rooms. Comparative analyzes were carried out between two refrigerating chambers installed in a food products conveyor, using the same hermetic compressor and working with different refrigerant fluids. In the cold cooling chamber, the fluid used is R-22 and in the freezing chamber, R-404A is used. The complete analysis of the fluids shows the capacities of each one, in its application, it was noticed that the R22 fluid has already been used in refrigeration systems, having good thermal efficiency in the segment in which it is applied. As for the R404-A fluid, as it has other characteristics, it favors its use in the freezing cold room, it has better results applied in a hermetic compressor, thus making a drop in application and the system works perfectly with the change of the refrigerant fluid, for both applications. The systems do not operate with the same fluid, because for financial reasons, it is more feasible to use R22 fluid in the cooling chamber.