Scholarly record

PRACTICAL REALISATION AND FINITE ELEMENT MODELING OF ULTRASONIC FILTERS DESIGN FOR AIR FILTRATION

Dan Niţoi

Abstract

The paper presents the need for the purification of polluted air from the highly polluting processing technology of an industrial shop. (paint shops, foundries, welding constructions, forging, etc.). Practical realization elements of ultrasonic filter and finite element modeling of the vibratory disk used in air purification system are shortly described. Besides these, advantages of using ultrasounds in the pollutant air filtration and purification process and an ultrasonic filter designed are presented. The main computational and construction elements of the ultra-acoustic system used in the design of the air filter are also discussed in the paper. Paper insists in the design of the main part of the ultrasonic system represented by ultrasonic transducer. In this case, the transducer that is used consist in two asymmetrical passive elements (reflector and radiant element). The design steps and calculating elements taken in the analysis consists in ultrasonic concentrator, vibratory disk and cylindrical housing of the ultrasonic system. Experimental researches have shown an increased efficiency of using this type of filter (retention of microparticles larger than 1.0 ?m, smoke retention and increase of duration of filter operation more than 3 ... 5 times).

Publication details

Back to publication list