Vpliv nečistoč na učinkovitost ploščnega prenosnika toplote : doktorsko delo

Faculty of Mechanical Engineering, Lj. (FSLJ)

Vpliv nečistoč na učinkovitost ploščnega prenosnika toplote : doktorsko delo

Berce, Jure, strojnik

V doktorskem delu obravnavamo vpliv odlaganja nečistoč na karakteristike ploščnega prenosnika toplote pri enofazni konvekciji in na dvofazni prenos toplote pri mehurčkastem vrenju na strukturiranih ... površinah ter napoved uporabne življenjske dobe na podlagi poslabšanja učinkovitosti prenosa toplote. V ta namen predstavljamo eksperimentalne meritve kristalizacije soli v ploščnem prenosniku toplote, prvič sklopljene z infrardečo termografijo za analizo krajevnih in časovnih sprememb prenosa toplote. V različnih režimih obratovanja prikažemo lokalno spreminjanje temperaturnega polja kanala hladne vode in identificiramo območja, kjer se formira največja obloga nečistoč. Nadalje kažemo razvoj strukturiranih površin, ki promovirajo mehurčkasto vrenje in zavirajo odlaganje nečistoč. Slednje ovrednotimo tekom dolgotrajnega vrenja v čistem in nečistem mediju, pri čemer popišemo mehanizme degradacije in spremembe površinske kemije, topografije in omočljivosti. V obeh medijih na razvitih površinah demonstriramo do desetkrat počasnejše poslabšanje učinkovitosti prenosa toplote pri vrenju in do 112 % višje koeficiente toplotne prestopnosti napram neobdelani površini tudi po več kot 400 urah intenzivnega vrenja. Nazadnje predstavljamo razvoj adaptivnega algoritma za napoved uporabne življenjske dobe, katerega široko uporabnost verificiramo na eksperimentalnih podatkih poslabšanja učinkovitosti prenosa toplote ploščnega prenosnika toplote in različnih vrelnih površin.

Type of material - dissertation ; adult, serious

Publication and manufacture - Ljubljana : [J. Berce], 2024

Language - slovenian

COBISS.SI-ID - 203130883

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Golobič, Iztok | Zupančič, Matevž, 1990-

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Call number – location, accession no. ...	Copy status	Reservation
Dr BERCE J. Vpliv IN: 00061610 Dr BERCE J. Vpliv IN: 00061610	available - reading room

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Year	Impact factor		Edition		Category		Classification
Year	JCR	SNIP	JCR	SNIP	JCR	SNIP	JCR	SNIP

Links to authors' personal bibliographies	Links to information on researchers in the SICRIS system
Berce, Jure, strojnik	54777
Golobič, Iztok	05566
Zupančič, Matevž, 1990-	36685

Source: Personal bibliographies and: SICRIS

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