Abstract
The paper presents general description of an ultrasonic air filter used in industrial air filtration system and the experimental results obtained. The method can be used in air purification system from the highly polluting processing technology of an industrial shop (paint shops, foundries, welding constructions, forging, etc.). The ultrasonic system construction and the advantages of using ultrasounds in the pollutant air filtration and purification process and an ultrasonic filter designed are here presented. In this case, the transducer which is the most important element consist in two asymmetrical passive elements (reflector and radiant element). For the ultrasonic system design there are presented the principal theoretical elements and in the final the finite element analyze of the whole ultrasonic system. To start a different filtering system some considerations like the following are important: the construction should be as simple and easy to install in the working zone, do not require dismantling to clean the filter element, cleaning periodically when the pressure drop reaches a limit value by commanding the operation of the ultrasonic transducer, allow restraint of the finest particles leading to the final consumer (in some technological processes) pure air, have a much longer operating life than conventional filters, in the sense that the ultrasonic activated filter elements have a higher reliability, to achieve a pressure drop in a range of restricted values, practically to be kept constant or with very small variations, creating stationary waves to allow not only very fine particle retention but also air drying, allow easy maintenance, the operating costs of which do not exceed the costs of the classic ones.
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More From: IOP Conference Series: Materials Science and Engineering
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