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New ultrasonic controller and characterization system for low temperature drying process intensification

power ultrasound
food drying transducers
characterization of transducers
R.R. Andrés, A. Blanco, V.M. Acosta, E. Riera, I. Martínez, A. Pinto
Journal of Physics Procedia, 70, 833-836
http://dx.doi.org/10.1016/j.phpro.2015.08.170

Process intensification constitutes a high interesting and promising industrial area. It aims to modify conventional processes or develop new technologies in order to reduce energy needs, increase yields and improve product quality. It has been demonstrated by this research group (CSIC) that power ultrasound have a great potential in food drying processes. The effects associated with the application of power ultrasound can enhance heat and mass transfer and may constitute a way for process intensification.

The objective of this work has been the design and development of a new ultrasonic system for the power characterization of piezoelectric plate-transducers, as excitation, monitoring, analysis, control and characterization of their nonlinear response. For this purpose, the system proposes a new, efficient and economic approach that separates the effect of different parameters of the process like excitation, medium and transducer parameters and variables (voltage, current, frequency, impedance, vibration velocity, acoustic pressure and temperature) by observing the electrical, mechanical, acoustical and thermal behavior, and controlling the vibrational state.

Acknowledgements

This work has been supported by the project DPI2012-37466-C03-01 funded by the Spanish Ministry of Economy and Competitiveness

GSTU

proyecto/s relacionado/s

  • Design and development of drying ultrasonic systems (USDIS)
    Plan Nacional I+D+i 2008-2011
Acoustics and Non Destructive Evaluation (DAEND)
  • Environmental Acoustics (GAA)
  • G Carma: Materials Characterization by Non Destructive Evaluation
  • ULAB, Ultrasounds for Liquid Analysis and Bioengineering
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  • Research group on Cryptology and Information Security (GiCSI)
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  • Multichannel Ultrasonic Signal Processing Group (MUSP)
Sensors and Ultrasonic Systems (DSSU)
  • Ultrasonic Systems and Technologies (USTG)
  • Nanosensors and Smart Systems (NoySi)
  • Ultrasonic Resonators for cavitation and micromanipulation (RESULT)
  • Advanced Sensor Technology (SENSAVAN)
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  • Laboratorio de Metrología Ultrasónica Médica (LMUM)
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  • Laboratory for International Collaboration in Advanced Biophotonics Imaging

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