izpis_h1_title_alt

Effect of nanoparticle size and concentration on pool boiling heat transfer with TiO[sub]2 nanofluids on laser-textured copper surfaces
ID Hadžić, Armin (Avtor), ID Može, Matic (Avtor), ID Arhar, Klara (Avtor), ID Zupančič, Matevž (Avtor), ID Golobič, Iztok (Avtor)

.pdfPDF - Predstavitvena datoteka, prenos (12,62 MB)
MD5: A8F9B41DC4635A586A5AECAF7935DA35
URLURL - Izvorni URL, za dostop obiščite https://www.mdpi.com/2079-4991/12/15/2611 Povezava se odpre v novem oknu

Izvleček
The enhancement of boiling heat transfer has been extensively shown to be achievable through surface texturing or fluid property modification, yet few studies have investigated the possibility of coupling both enhancement approaches. The present work focuses on exploring the possibility of concomitant enhancement of pool boiling heat transfer by using TiO2 -water nanofluid in combination with laser-textured copper surfaces. Two mass concentrations of 0.001 wt.% and 0.1 wt.% are used, along with two nanoparticle sizes of 4–8 nm and 490 nm. Nanofluids are prepared using sonification and degassed distilled water, while the boiling experiments are performed at atmospheric pressure. The results demonstrate that the heat transfer coefficient (HTC) using nanofluids is deteriorated compared to using pure water on the reference and laser-textured surface. However, the critical heat flux (CHF) is significantly improved at 0.1 wt.% nanoparticle concentration. The buildup of a highly wettable TiO2 layer on the surface is identified as the main reason for the observed performance. Multiple subsequent boiling experiments using nanofluids on the same surface exhibited a notable shift in boiling curves and their instability at higher concentrations, which is attributable to growth of the nanoparticle layer on the surface. Overall, the combination of nanofluids boiling on a laser-textured surface proved to enhance the CHF after prolonged exposure to highly concentrated nanofluid, while the HTC was universally and significantly decreased in all cases.

Jezik:Angleški jezik
Ključne besede:nanoparticles, nanofluids, boiling, heat transfer, heat transfer enhancement, nanoparticle deposition
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2022
Status objave pri reviji:Objavljeno
Verzija članka:Založnikova različica članka
Datum objave:29.07.2022
Št. strani:22 str.
Številčenje:Vol. 12, iss. 15
PID:20.500.12556/RUL-138623 Povezava se odpre v novem oknu
UDK:536.24:542.467:620.3
ISSN pri članku:2079-4991
DOI:10.3390/nano12152611 Povezava se odpre v novem oknu
COBISS.SI-ID:117262083 Povezava se odpre v novem oknu
Datum objave v RUL:03.08.2022
Število ogledov:43
Število prenosov:26
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
:
Objavi na:AddThis
AddThis uporablja piškotke, za katere potrebujemo vaše privoljenje.
Uredi privoljenje...

Gradivo je del revije

Naslov:Nanomaterials
Skrajšan naslov:Nanomaterials
Založnik:MDPI AG
ISSN:2079-4991
COBISS.SI-ID:523286297 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:29.07.2022

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:nanodelci, nanofluidi, vrenje, prenos toplote, izboljšan prenos toplote, oblaganje z nanodelci

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0223
Naslov:Prenos toplote in snovi

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:J2-2486
Naslov:Izboljšan prenos toplote pri vrenju z uporabo hierarhičnih funkcionaliziranih površin (eHEATs)

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:N2-0251

Podobna dela

Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:

Nazaj