Prenos toplote in kritična gostota toplotnega toka pri mehurčkastem vrenju na tankih grelnikih : doktorsko delo

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Prenos toplote in kritična gostota toplotnega toka pri mehurčkastem vrenju na tankih grelnikih : doktorsko delo

Petkovšek, Jure

Eksperimentalne preiskave mehurčkastega vrenja na tankih grelnikih so bile izvedene s hkratnim opazovanjem vrelne površine ter merjenjem nestacionarnega temperaturnega polja na grelniku. Izračunane ... so bile porazdelitve lokalne gostote toplotnega toka in koeficienta toplotne prestopnosti pri različnih intenzivnostih vrelnega procesa. Identificirana sta bila mehanizma hitre ter počasne rasti mehurčka. Izračuni kažejo na močan lokalni porast gostote toplotnega toka ob nukleaciji hitro rastočega mehurčka. Pri počasi rastočih mehurčkih nastopa povečana lokalna gostota toplotnega toka v trojnem stiku grelnika, fluida ter parne faze v mehurčku. Prikazan je bil pojav verižne koalescence in njen pomen pri ohlajanju grelne površine. Lokalna pregretja grelne površine se pri visoko intenzivnem vrelnem procesu širijo in združujejo v obsežnejša pregreta področja. To lahko vodi v nastop kritične gostote toplotnega toka.

Type of material - dissertation ; adult, serious

Publication and manufacture - Ljubljana : [J. Petkovšek], 2018

Language - slovenian

COBISS.SI-ID - 16208411

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Digitalna knjižnica Slovenije - dLib.si

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Petkovšek, Jure

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Golobič, Iztok

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Year	Impact factor		Edition		Category		Classification
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Links to authors' personal bibliographies	Links to information on researchers in the SICRIS system
Petkovšek, Jure	26177
Golobič, Iztok	05566

Source: Personal bibliographies and: SICRIS

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