EXPERIMENTAL INVESTIGATION OF CRITICAL HEAT FLUX IN ANNULUS AT LOW PRESSURE AND LOW FLOW PARAMETERS

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dc.contributor.authorVlček, Danielcs
dc.contributor.authorSuk, Ladislavcs
dc.contributor.authorŠtevanka, Kamilcs
dc.contributor.authorPetrosyan, Taroncs
dc.coverage.issue1cs
dc.coverage.volume28cs
dc.date.accessioned2021-04-22T10:54:14Z
dc.date.available2021-04-22T10:54:14Z
dc.date.issued2020-12-01cs
dc.description.abstractSteady state flow boiling experiments were conducted on a technically smooth Inconel 625 tube with outer diameter 9.1 mm at inlet pressures 131, 220 and 323 kPa, inlet temperatures 62, 78 and 94 °C and approximately 400, 600 and 1000 kg/(m2.s) mass flow. Water of these parameters was entering into the vertically aligned annulus, where the uniformly heated tube was placed until the critical heat flux (CHF) appeared. The experimental data were compared to estimations of CHF by local PGT tube correlation and Groeneveld’s look-up tables for tubes. The results imply that in the region of low pressure and low mass flux, the differences between calculations and experiments are substantial (more than 50 % of CHF). The calculations further imply that look-up tables and tube correlations should be corrected to the annulus geometry. Here, the Doerffer’s approach was chosen and led to a substantial enhancement of CHF estimation. Yet, a new correlation for the region of low pressure and flow is needed.en
dc.formattextcs
dc.format.extent50-58cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationActa Polytechnica CTU Proceedings. 2020, vol. 28, issue 1, p. 50-58.en
dc.identifier.doi10.14311/APP.2020.28.0050cs
dc.identifier.isbn978-80-01-06794-9cs
dc.identifier.issn2336-5382cs
dc.identifier.other167772cs
dc.identifier.urihttp://hdl.handle.net/11012/196565
dc.language.isoencs
dc.publisherCzech Technical University in Praguecs
dc.relation.ispartofActa Polytechnica CTU Proceedingscs
dc.relation.urihttps://ojs.cvut.cz/ojs/index.php/APP/article/view/6916cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2336-5382/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectCHFen
dc.subjectInconel 625en
dc.subjectboiling crisisen
dc.subjectabraded surfaceen
dc.titleEXPERIMENTAL INVESTIGATION OF CRITICAL HEAT FLUX IN ANNULUS AT LOW PRESSURE AND LOW FLOW PARAMETERSen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-167772en
sync.item.dbtypeVAVen
sync.item.insts2023.02.07 16:56:36en
sync.item.modts2023.02.07 16:15:33en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav elektroenergetikycs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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