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Energy harvesting with micro scale hydrodynamic cavitation-thermoelectric generation coupling
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Medical Imaging.ORCID iD: 0000-0003-4883-7347
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0002-4583-723X
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Medical Imaging. KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-3699-396X
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2019 (English)In: AIP Advances, ISSN 2158-3226, E-ISSN 2158-3226, Vol. 9, article id 105012Article in journal (Refereed) Published
Abstract [en]

In this study, energy harvesting with micro scale hydrodynamic cavitation-thermoelectric generation coupling is investigated. For this, three micro orifices with different geometrical dimensions are fabricated. The hydraulic diameter of the micro orifices are 66.6 mu m, 75.2 mu m, and 80 mu m, while their length is the same (2000 mu m). Two different working fluids, namely water and Perfluoropentane droplet-water suspension, are utilized for cavitating flows in the fabricated micro orifices. The flow patterns at different upstream pressures are recorded using the high-speed camera system, and the experimental results are analyzed and compared. Thereafter, energy harvesting perspectives of cavitating flows are considered. The released heat from collapsing bubbles and the subsequent temperature rise on the end wall of the microchannel, which can be used as the source for the power generation, is calculated over time. Finally, a miniature energy harvesting system with cavitation system and thermoelectric generator coupling is presented. The maximum power corresponding to two different thermoelectric generators is estimated for with both working fluids and is compared with the required power to run miniature daily used electronics components.

Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2019. Vol. 9, article id 105012
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-261422DOI: 10.1063/1.5115336ISI: 000496806000013Scopus ID: 2-s2.0-85073407537OAI: oai:DiVA.org:kth-261422DiVA, id: diva2:1358389
Note

QC 20191011. QC 20200217

Available from: 2019-10-07 Created: 2019-10-07 Last updated: 2020-02-17Bibliographically approved

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Ghorbani, MortezaSvagan, Anna JustinaGrishenkov, Dmitry

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Medical ImagingFibre- and Polymer TechnologyMarcus Wallenberg Laboratory MWL
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