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Izboljšan prenos toplote pri vrenju v bazenu na strukturiranih površinah z variabilno omočljivostjo : magistrsko delo magistrskega študijskega programa II. stopnje StrojništvoPurič, JakaMehurčkasto vrenje velja za enega izmed najučinkovitejših in tehnološko nadzorovanih mehanizmov prenosa toplote zaradi velike spremembe entalpije pri majhni temperaturni razliki, kar v inženirskih ... aplikacijah omogoča učinkovit odvod velikih gostot toplotnega toka. V nalogi obravnavamo izdelavo strukturiranih površin z variabilno omočljivostjo in njihov vpliv na karakteristike prenosa toplote pri mehurčkastem vrenju v bazenu pri atmosferskem tlaku. Vrelne površine smo obdelali s kombinacijo laserskega strukturiranja in nanosa hidrofobnega premaza z namenom izdelave bifilnih površin z razmiki med hidrofobnimi mesti v območju 0,6-3 mm. V okviru eksperimentalnega dela smo na pripravljenih vzorcih primerjali koeficiente toplotne prestopnosti, kritično gostoto toplotnega toka in potek vrelnih krivulj v režimu mehurčkastega vrenja. Rezultati meritev kažejo, da strukturirana bakrena bifilna površina, ki izkazuje najvišje koeficiente toplotne prestopnosti pri nizkih gostotah toplotnega toka, ne daje največjih izboljšav tudi v območju visokih toplotnih tokov. Najvišji koeficient toplotne prestopnosti 411,2 kW m-2 K-1 je bil pri visokih gostotah toplotnega toka ~1400 kW m-2 dosežen na površini z razmikom med hidrofobnimi mesti 1,25 mm.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [J. Purič], 2022Language - slovenianCOBISS.SI-ID - 119479043
Author
Purič, Jaka
Other authors
Golobič, Iztok |
Može, Matic
Topics
magistrske naloge |
prenos toplote |
vrenje v bazenu |
strukturirane površine |
mehurčkasto vrenje |
variabilna omočljivost |
master thesis |
heat transfer |
pool boiling |
laser-textured surfaces |
nucleate boiling |
variable wettability
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Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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Year | Impact factor | Edition | Category | Classification | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Purič, Jaka | ![]() |
Golobič, Iztok | 05566 |
Može, Matic | 52341 |
Source: Personal bibliographies
and: SICRIS
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