Análise do consumo energético de um misturador com pás em diferentes inclinações considerando a eficiência do processo

Abstract

Mixers are equipment used in different segments of the industry, to mix two or more components at different scales and applications, being able to vary different properties of the processed fluids. For mixing, there is a wide range of impeller models that can work from low to high rotation, with specific applications such as: better dissipation, breaking solid particles, generating turbulence and moving products with high viscosity. The main objective of this work is to analyze the energy consumption of the electric motor in relation to the mixing process carried out by a mixer with inclined straight blades, 750mm in diameter and 680mm in width. For this, different inclinations of the impeller blades will be tested (30°, 45° and 60°), in order to find the inclination with the best energy performance without impacting the quality of the final product. The results will be obtained through the design of a full-scale tank, testing the models of impellers in the realization of a mixture of 200 liters of water and 10 kilos of sugar, coupling them in the axis in a removable way. The tests indicated that 45° and 60° impellers achieve adequate mixing (living few sugar particles without dissolution), however, the 60° impeller consumes 4.5% more energy to carry out the process. In this way, it was concluded that the 45° impeller is the most suitable for this job. [resumo fornecido pelo autor]