Energy characterisation of ultrasonic systems for industrial processes
Article
Article Title | Energy characterisation of ultrasonic systems for industrial processes |
---|---|
ERA Journal ID | 16928 |
Article Category | Article |
Authors | Al-Juboori, Raed A. (Author), Yusaf, Talal (Author), Bowtell, Leslie (Author) and Aravinthan, Vasantha (Author) |
Journal Title | Ultrasonics |
Journal Citation | 57, pp. 18-30 |
Number of Pages | 13 |
Year | 2015 |
Place of Publication | Amsterdam, Netherlands |
ISSN | 0041-624X |
1874-9968 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.ultras.2014.10.003 |
Abstract | Obtaining accurate power characteristics of ultrasonic treatment systems is an important step towards their industrial scalability. Calorimetric measurements are most commonly used for quantifying the dissipated ultrasonic power. However, accuracy of these measurements is affected by various heat losses, especially when working at high power densities. In this work, electrical power measurements were conducted at all locations in the piezoelectric ultrasonic system equipped with 1/2 inch and 3/4 inch probes. A set of heat transfer calculations were developed to estimate the convection heat losses from the reaction solution. Chemical dosimeters represented by the oxidation of potassium iodide, Fricke solution and 4-nitrophenol were used to chemically correlate the effect of various electrical amplitudes and treatment regimes. This allowed estimation of sonochemical-efficiency (SE) and energy conversion (XUS) of the ultrasonic system. Results of this study showed overall conversion efficiencies of 60-70%. This correlated well with the chemical dosimeter yield curves of both organic and inorganic aqueous solutions. All dosimeters showed bubble shielding and coalescence effects at higher ultrasonic power levels, less pronounced for the 1/2 inch probe case. SE and XUS values in the range of 10-10 mol/J and 10-3 J/J respectively confirmed that conversion of ultrasonic power to chemical yield declined with amplitude. |
Keywords | calorimetric techniques; convective heat loss; heat transfer; high power ultrasound; sonochemistry |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
400403. Chemical engineering design | |
340204. Inorganic green chemistry | |
401001. Engineering design | |
Public Notes | Copyright 2014 Elsevier B.V. Permanent restricted access to published version due to publisher copyright policy. |
Byline Affiliations | School of Civil Engineering and Surveying |
School of Mechanical and Electrical Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2vv4/energy-characterisation-of-ultrasonic-systems-for-industrial-processes
1747
total views6
total downloads2
views this month0
downloads this month