20.500.12556/RUL-154374 Effect of surface wettability on nanoparticle deposition during pool boiling on laser-textured copper surfaces Prior studies have evidenced the potential for enhancing boiling heat transfer through modifications of surface or fluid properties. The deployment of nanofluids in pool boiling systems is challenging due to the deposition of nanoparticles on structured surfaces, which may result in performance deterioration. This study addresses the use of TiO$_2$–water nanofluids (mass concentrations of 0.001 wt.% and 0.1 wt.%) in pool boiling heat transfer and concurrent mitigation of nanoparticle deposition on superhydrophobic laser-textured copper surfaces. Samples, modified through nanosecond laser texturing, were subjected to boiling in an as-prepared superhydrophilic (SHPI) state and in a superhydrophobic state (SHPO) following hydrophobization with a self-assembled monolayer of fluorinated silane. The boiling performance assessment involved five consecutive boiling curve runs under saturated conditions at atmospheric pressure. Results on superhydrophilic surfaces reveal that the use of nanofluids always led to a deterioration of the heat transfer coefficient (up to 90%) compared to pure water due to high nanoparticle deposition. The latter was largely mitigated on superhydrophobic surfaces, yet their performance was still inferior to that of the same surface in water. On the other hand, CHF values of 1209 kW m$^{−2}$ and 1462 kW m$^{−2}$ were recorded at 0.1 wt.% concentration on both superhydrophobic and superhydrophilic surfaces, respectively, representing a slight enhancement of 16% and 27% compared to the results obtained on their counterparts investigated in water. nanoparticles nanoparticle deposition nanofluids laser texturing hydrophobization boiling heat transfer nanodelci odlaganje nanodelcev nanofluidi lasersko teksturiranje hidrofobizacija prenos toplote pri vrenju true false true Angleški jezik Slovenski jezik Članek v reviji 2024-02-12 11:06:40 2024-02-12 11:06:41 2024-12-04 15:29:51 0000-00-00 00:00:00 2024 0 0 17 str. iss. 3, art. 311 Vol. 14 Feb. 2024 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 620.3:544:536.24 2079-4991 10.3390/nano14030311 184768771 Berce...-Effect_of_surface_wettability_on_nanoparticle_deposition_during_pool_boiling_on_laser-textured_copper_surfaces.pdf Berce...-Effect_of_surface_wettability_on_nanoparticle_deposition_during_pool_boiling_on_laser-textured_copper_surfaces.pdf 1 87B5261F388DB431BB33DE64DB5A9216 272f8adbaec995a7e0621ca845e84ff5c038c39a0536e041058eab55e2d2862b 164ecf85-c98f-11ee-a96a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=180762 https://www.mdpi.com/2079-4991/14/3/311 1 6bd5c925-c98e-11ee-a96a-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=180759 Fakulteta za strojništvo 0 0 0