Energy conversion during effervescent atomization

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dc.contributor.authorJedelský, Jancs
dc.contributor.authorJícha, Miroslavcs
dc.coverage.issue1cs
dc.coverage.volume111cs
dc.date.issued2013-09-01cs
dc.description.abstractThe paper qualitatively describes processes during the internal flow, discharge of two-phase mixture as well as spray formation with a particular focus on the energy transfer during effervescent atomization of light heating oil. The near nozzle spray visualization elucidates the liquid breakup process at different operation modes. Numerical results illustrate the forms of energy involved in the atomization process, their values and the influence of operational conditions on relations between the energy forms. The main part of the paper focuses on the atomization efficiency. A simple method for estimation of the atomization efficiency of pneumatic atomizers is proposed; surface tension energy of created droplets, obtained from phase-Doppler anemometry data, is compared with the energy required for atomization. The atomization efficiency of effervescent atomizers is found to be in fragments of per cents for atomizing pressures ranging between 0.1 and 0.5 MPa, and gas-to-liquid ratios (GLRs) between 0.02 and 0.1, and it is inferior, by about one order of magnitude to the efficiency of simple pressure and pressure-swirl atomizers for a comparable droplet size. The efficiency declines with both the pressure and GLR with approximately logarithmic tendency.en
dc.description.abstractPříspěvek popisuje konverzi energie při atomizaci typu effervescent. Atomizace kapalin je z pohledu energie process transformace vstupní energie médií do povrchové energie vytvořených kapek. Kvalitativně popisujeme děje doprovázející vnitřní proudění, výtok dvoufázové směsi a tvorbu spreje se zaměřením na konverzi energie u effervescent atomizace. Dále je provedeno kvantitativní hodnocení jednotlivých energetických toků pro různé provozní režimy effervescent atomizeru. Více v anglické verzi.cs
dc.formattextcs
dc.format.extent836-844cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFUEL. 2013, vol. 111, issue 1, p. 836-844.en
dc.identifier.doi10.1016/j.fuel.2013.03.053cs
dc.identifier.issn0016-2361cs
dc.identifier.orcid0000-0002-1268-8434cs
dc.identifier.orcid0000-0002-1409-5165cs
dc.identifier.other104267cs
dc.identifier.researcheridA-9224-2013cs
dc.identifier.researcheridCVT-7747-2022cs
dc.identifier.scopus23090535800cs
dc.identifier.scopus6602494673cs
dc.identifier.urihttp://hdl.handle.net/11012/138387
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofFUELcs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S001623611300241Xcs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0016-2361/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectTwin-fluid atomizationen
dc.subjectEffervescent atomizationen
dc.subjectAtomization efficiencyen
dc.subjectEnergy conversionen
dc.subjectTwo-phase flowen
dc.subjectSUSPENSION PLASMA SPRAYen
dc.subjectTWIN-FLUID ATOMIZATIONen
dc.subject2-PHASE FLOWen
dc.subjectATOMIZERen
dc.subjectLIQUIDen
dc.subjectPERFORMANCEen
dc.subjectUNSTEADINESSen
dc.subjectREGIMESen
dc.subjectBREAKUPen
dc.subjectNOZZLEen
dc.subjectAtomizace kapalin
dc.subjecttransformace energie
dc.subjectvnitřní proudění
dc.subjectkonverze energie
dc.subjecteffervescent atomizace
dc.titleEnergy conversion during effervescent atomizationen
dc.title.alternativeKonverze energie při atomizaci typu effervescentcs
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionacceptedVersionen
sync.item.dbidVAV-104267en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:46:40en
sync.item.modts2025.01.17 19:36:16en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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