Desenvolvimento de um Tubo de Venturi acoplado a um Reservatório para Medição da Vazão e Pressão de Fluidos utilizando a Equação de Bernoulli

Abstract

Aiming initially to obtain a fluid flow and pressure measurement instrument by means of an easily constructed device and low cost material, to be assembled and coupled to an acrylic tank measuring 50x50x50 cm and specially constructed for this purpose, scientific knowledge has contributed to the fact that the built prototype model can be used as didactic material in classes of fluid systems for engineering laboratories. This work has proposed to develop a classic Venturi Tube, based on calculations and developments derived from the Bernoulli equation. The bench was composed of two gage-type meters connected in the Venturi Tube, pipes and a tank built in the Laboratory of GRAEST (Group of Robotics and Automation of the School of Technology), physical space that was made available in EST and belonging to UEA (University of the State of Amazonas). The ideal tank flow was obtained by the difference between the two-point pressures of the Venturi tube, using volumetric pipettes, as a mechanical resource, to determine the pressure heights of the fluids that passed at those points. The results of pressure, velocity and flow measured in this equipment were close to the expected one, in view of the search of the alignment of the tubes and the precision of the calculations during the tests, which can be observed in the graphs presented, which were elaborated in the program Excel. The efficiency of the equipment was 52.32%, which is a very satisfactory result for the operation of equipment of this type.