Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 873402

Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions


Petošić, Antonio; Horvat, Marko; Režek Jambrak, Anet
Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions // Ultrasonics sonochemistry, 39 (2017), 219-232 doi:10.1016/j.ultsonch.2017.04.026 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 873402 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions

Autori
Petošić, Antonio ; Horvat, Marko ; Režek Jambrak, Anet

Izvornik
Ultrasonics sonochemistry (1350-4177) 39 (2017); 219-232

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Small sonoreactor ; Linear and nonlinear driving conditions ; Electromechanical and acoustical characterization ; Radiation impedance ; Number of negative pressure peaks during treatments with high-power ultrasound

Sažetak
The paper reports and compares the results of the electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type ultrasonic device inside a small sonoreactor, immersed in three different loading media, namely, water, juice and milk, excited at different excitation levels, both below and above the cavitation threshold. The electroacoustic efficiency factor determined at system resonance through electromechanical characterization in degassed water as the reference medium is 88.7% for the device in question. This efficiency can be reduced up to three times due to the existence of a complex sound field in the reactor in linear driving conditions below the cavitation threshold. The behaviour of the system is more stable at higher excitation levels than in linear operating conditions. During acoustical characterization, acoustic pressure is spatially averaged, both below and above the cavitation threshold. The standing wave patterns inside the sonoreactor have a stronger influence on the variation of the spatially distributed RMS pressure in linear operating conditions. For these conditions, the variation of ±1.7 dB was obtained, compared to ±1.4 dB obtained in highly nonlinear regime. The acoustic power in the sonoreactor was estimated from the magnitude of the averaged RMS pressure, and from the reverberation time of the sonoreactor as the representation of the losses. The electroacoustic efficiency factors obtained through acoustical and electromechanical characterization are in a very good agreement at low excitation levels. The irradiated acoustic power estimated in nonlinear conditions differs from the dissipated acoustic power determined with the calorimetric method by several orders of magnitude. The number of negative pressure peaks that represent transient cavitation decreases over time during longer treatments of a medium with high-power ultrasound. The number of negative peaks decreases faster when the medium and the vessel are allowed to heat up.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika



POVEZANOST RADA


Projekti:
HRZZ-UIP-2013-11-4996 - Ultrazvučni sustav za određivanje parametara kompleksnih materijala u nelinearnim uvjetima rada (ULTRASNON) (Petošić, Antonio, HRZZ - 2013-11) ( POIROT)

Ustanove:
Fakultet elektrotehnike i računarstva, Zagreb,
Prehrambeno-biotehnološki fakultet, Zagreb

Profili:

Avatar Url Antonio Petošić (autor)

Avatar Url Marko Horvat (autor)

Avatar Url Anet Režek Jambrak (autor)

Citiraj ovu publikaciju

Petošić, Antonio; Horvat, Marko; Režek Jambrak, Anet
Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions // Ultrasonics sonochemistry, 39 (2017), 219-232 doi:10.1016/j.ultsonch.2017.04.026 (međunarodna recenzija, članak, znanstveni)
Petošić, A., Horvat, M. & Režek Jambrak, A. (2017) Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions. Ultrasonics sonochemistry, 39, 219-232 doi:10.1016/j.ultsonch.2017.04.026.
@article{article, year = {2017}, pages = {219-232}, DOI = {10.1016/j.ultsonch.2017.04.026}, keywords = {Small sonoreactor, Linear and nonlinear driving conditions, Electromechanical and acoustical characterization, Radiation impedance, Number of negative pressure peaks during treatments with high-power ultrasound}, journal = {Ultrasonics sonochemistry}, doi = {10.1016/j.ultsonch.2017.04.026}, volume = {39}, issn = {1350-4177}, title = {Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions}, keyword = {Small sonoreactor, Linear and nonlinear driving conditions, Electromechanical and acoustical characterization, Radiation impedance, Number of negative pressure peaks during treatments with high-power ultrasound} }
@article{article, year = {2017}, pages = {219-232}, DOI = {10.1016/j.ultsonch.2017.04.026}, keywords = {Small sonoreactor, Linear and nonlinear driving conditions, Electromechanical and acoustical characterization, Radiation impedance, Number of negative pressure peaks during treatments with high-power ultrasound}, journal = {Ultrasonics sonochemistry}, doi = {10.1016/j.ultsonch.2017.04.026}, volume = {39}, issn = {1350-4177}, title = {Electromechanical, acoustical and thermodynamical characterization of a low-frequency sonotrode- type transducer in a small sonoreactor at different excitation levels and loading conditions}, keyword = {Small sonoreactor, Linear and nonlinear driving conditions, Electromechanical and acoustical characterization, Radiation impedance, Number of negative pressure peaks during treatments with high-power ultrasound} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font