Ultrasound waves have a huge energy and evidently they can’t convert completely into mixing force, a part of this energy convert to heat and increase the temperature of mixing media. I am working on the temperature increasing when the ultrasonic mixer works in the liquid system. I study this phenomena with controlling input parameters such as sonication amplitude, cycle, time, etc. The findings are remarkable, but I haven’t find analogous studies to compare my works with others. Can you help me with your valuable advise and information about energy loss in ultrasonic mixing ?
Thanks for your involvement
With respects
M. Keyhani
Maybe the Calorimetry can answer to your question, it is something very common at sonochemical applications in order to find the real power inside the reactor and to estimate how much of the nominal power of your system just increasing the temperature.
I suggest to read the paper "Standardization of ultrasonic power for sonochemical reaction" by Kimura et al, Ultrasonics Sonochemistry 1996 , especially the paragraph 2.2
Have a look to this paper:
J M M Pinkerton 1949, The Absorption of Ultrasonic Waves in Liquids and its Relation to Molecular Constitution, Proceedings of the Physical Society. Section B, 2, 129-141. doi:10.1088/0370-1301/62/2/307
Knowing the attenuation coefficient, you can estimate the power loss.
I suggest you to have a look to works of Adriano Troia (and collegues) also present in Researchgate. Besides I suggest you also Thomenius K.E., 1990, Thermal dosimetry models for diagnostic ultrasound, Proc. IEEE Ultrason. Symp. pp. 1399-1408. I do hope it helps.
Hi!
you can find information in (Introduction to Chemical Engineering Thermodynamics) by Smith.
Hello dear Mohammad;
Yes by means of simple assumption and calculation you can estimate approximate energy loss from ultrasound generation system to your reactor! Normally by means of multi-meter (for measurement of consumed power), heat measurement via thermometer and using energy equations you can have a good idea about energy loss. But for accurate measurement of energy intensity to your fluids you should use such measurement probe (Please see attached file).
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