Aplicação de métodos de eficiência energética no sistema de circulação de ar de uma cabine de pintura

Abstract

Electric energy is currently an essential component of human life, as it is directly or indirectly linked to almost all activities carried out by the population, therefore, its efficient use is a topic that has been gaining more and more space. With that in mind, the industrial sector, as it is the largest and has great potential for optimization, needs more investment in improving energy efficiency. As a result, this work aimed to evaluate the possible ways of reducing the consumption of electricity, through the use of more efficient technologies, applied to a case study, focused on a metallurgical industry, more precisely in a cabin of painting, with the proposal to change its subsystems, with emphasis on exhaustion, supply and lighting. These subsystems, in turn, were evaluated individually so that different technologies could be implemented, but that have a reduction in energy consumption, and for that it was defined that a reduction in the engine speed would be implemented in the supply system, with an increase in the damper of clean air capture inlet, as the internal pressure could not be changed, which depends on the inlet and outlet air flow. In the exhaust system, as it was not possible to reduce the air flow as it would have a direct impact on the painter's health and the quality of the vehicle's painting, the engines were kept at a fixed speed and the original engine of the Voges brand and VTOP model was replaced with yield parameter of 91.4%, by others with higher efficiency parameters, these being the Weg brand. The first was the IR3 Super Premium model with an efficiency of 92.7%, reaching an energy gain of 10.39%, and the second of a synchronous technology, the WMagnet model, with an efficiency of 93.8%, and an energy gain of 15.01%. As for the third subsystem, which is the lighting one, the Philips model T10 Plus fluorescent lighting model was replaced by another one with Lumalux model PJ-48 LED technology, thus ensuring an adequacy of the illuminance level of the cabin, thus ensuring greater comfort and safety for the employees who use it. But to achieve this objective, which is a premise of NBR 8995-1, the installed power had to be exceeded by 472.39 kWh per month, not being possible to maintain a energy gain in this case, increasing its consumption by 18.61%. [resumo fornecido pelo autor]