Scholarly record
RESEARCHES ON AIR PURIFICATION USING ULTRASONIC FILTERS
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.). The 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 ultraacoustic system used in the design of the air filter are presented 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 are: the mechanical resonance condition; the electromechanical resonance condition; the acoustic power emitted by the resonance; acoustic power emitted at low frequencies; the acoustic power frequency characteristic; the electrical impedance of the transducer; electro-acoustical, acoustical- mechanic and electromechanical efficiency; the sensitivity of the low frequency transducer; the transducer sensitivity frequency characteristic and the resonance sensitivity of the transducer. 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 Impact Profile
Publication details
References8
K. Nakamura, Ultrasonic transducers - Material and design for sensors, actuators and medical aplications, Woodhead Publishing, USA, 2012.
J. David, N. Cheeke, Fundamentals and applications of ultrasonic waves, CRC Press, USA, 2012.
Joseph L. Rose, Ultrasonic waves in solid media, Cambridge University Press, 1999.
T. R. Gururaja, Walter A. Schulze, Leslie E. Cross, Robert E. Newnham, Piezoelectric Composite Materials for Ultrasonic Transducer Applications. Evaluation of Ultrasonic Medical Applications, IEEE Transactions on sonics and ultrasonics, vol. su-32. no. 4, 1985.
Clésia C. Nascentes, Mauro Korn, Clarivaldo S. Sousa, Marco A. Z. Arruda, Use of Ultrasonic Baths for Analytical Applications: A New Approach for Optimisation Conditions, J. Braz. Chem. Soc. vol.12 no.1 São Paulo 2001.
Ahmad Safari, E. Koray Akdogan, Acoustic material for acoustic application, Springer, USA, 2008.
K., Kikuchi, Ultrasound/Their Application in Science and Technology, New York, 2009.
Catalin Gheorghe Amza, Dan Florin Nițoi, Oana Chivu Constantin Radu, Marius Teodorescu, Contributions of the possibility of use of ultrasound in the air filter and purification, 15th International Multidisciplinary Scientific Geoconference (SGEM), Bulgaria, pp 897-904, 2015.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
