Superbiphilic patterned nanowires with wicking for enhanced pool boiling heat transfer

Shim, Dong Il; Hsu, Wei-Ting; Yun, Mi Jin; Lee, Dongwhi; Kim, Beom Seok; Cho, Hyung Hee

doi:10.1016/j.ijmecsci.2023.108280

Cited by 10 publications

(5 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, Shim et al [ 68 ] synthesized patterned super-biphilic surfaces having distinct super-hydrophobic area fractions and performed pool boiling heat transfer experiments with them as the boiling surfaces. The authors observed that the developed super-biphilic surfaces with wicking effect presented simultaneous enhancements of the CHF and HTC.…”

Section: Surface Modificationmentioning

confidence: 99%

“… Super-biphilic surfaces with silicon nanowires and coating with PFOTS: ( a ) SEM image of the silicon nanowires, and parameters of the super-hydrophobic regions of the super-biphilic surfaces; ( b ) contact angle of super-hydrophilic regions and super-hydrophobic dot regions; ( c ) immersed images of SBPI_d0.5 in a pool of deionized water [ 68 ]. …”

Section: Figurementioning

confidence: 99%

“…When the wall superheat was increased to 0.032, a large portion of the heating surface was covered by a vapor blanket and the boiling process entered in the transition boiling regime, as shown in Figure 12c. Additionally, Shim et al [68] synthesized patterned super-biphilic surfaces having distinct super-hydrophobic area fractions and performed pool boiling heat transfer experiments with them as the boiling surfaces. The authors observed that the developed super-biphilic surfaces with wicking effect presented simultaneous enhancements of the CHF and HTC.…”

Section: Tuned Wettability Surfacesmentioning

confidence: 99%

See 2 more Smart Citations

An Overview of Innovative Surface-Modification Routes for Pool Boiling Enhancement

Pereira,

Souza,

Moreira

et al. 2024

Micromachines

View full text Add to dashboard Cite

This overview intends to provide a comprehensive assessment of the novel fluids and the current techniques for surface modification for pool boiling enhancement. The surface modification at macro-, micro-, and nanoscales is assessed concerning the underlying fluid routing and capability to eliminate the incipient boiling hysteresis and ameliorate the pool boiling heat-transfer ability, particularly when employed together with self-rewetting fluids and nanofluids with enriched thermophysical properties. Considering the nanofluids, it is viable to take the profit of their high thermal conductivity and their specific heat simultaneously and to produce a film of deposited nanoparticles onto the heating surface, which possesses enhanced surface roughness and an increased density of nucleation sites. Whilst the diverse improvement scales are found to achieve distinct levels of success regarding the nucleate boiling heat-transfer capability enhancement, it is also shown that the micro–nanoscale boiling surface features are susceptible to blockage, leading to the degradation of the improvement with time. Furthermore, topics relating to the heat transfer thermal behavior, ease of manufacture, cost-effectiveness, reliability, and durability are reviewed whenever available and challenges and recommendations for further research are highlighted.

show abstract

Section: Surface Modificationmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Tuned Wettability Surfacesmentioning

confidence: 99%

See 1 more Smart Citation

An Overview of Innovative Surface-Modification Routes for Pool Boiling Enhancement

Pereira,

Souza,

Moreira

et al. 2024

Micromachines

View full text Add to dashboard Cite

show abstract

“…This achievement is attributed to the delay of the bubble merger and the maximization of bubble density. Shim et al [ 39 ] designed silicon surfaces featuring superbiphilic patterned nanowires and investigated pool boiling performance using deionized water under saturated conditions. The results demonstrated a significant increase in the CHF value, up to 100%, in comparison to the plain surface.…”

Section: Introductionmentioning

confidence: 99%

Aluminum Micropillar Surfaces with Hierarchical Micro- and Nanoscale Features for Enhancement of Boiling Heat Transfer Coefficient and Critical Heat Flux

Hadžić,

Može,

Zupančič

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

The rapid progress of electronic devices has necessitated efficient heat dissipation within boiling cooling systems, underscoring the need for improvements in boiling heat transfer coefficient (HTC) and critical heat flux (CHF). While different approaches for micropillar fabrication on copper or silicon substrates have been developed and have shown significant boiling performance improvements, such enhancement approaches on aluminum surfaces are not broadly investigated, despite their industrial applicability. This study introduces a scalable approach to engineering hierarchical micro-nano structures on aluminum surfaces, aiming to simultaneously increase HTC and CHF. One set of samples was produced using a combination of nanosecond laser texturing and chemical etching in hydrochloric acid, while another set underwent an additional laser texturing step. Three distinct micropillar patterns were tested under saturated pool boiling conditions using water at atmospheric pressure. Our findings reveal that microcavities created atop pillars successfully facilitate nucleation and micropillars representing nucleation site areas on a microscale, leading to an enhanced HTC up to 242 kW m−2 K−1. At the same time, the combination of the surrounding hydrophilic porous area enables increased wicking and pillar patterning, defining the vapor–liquid pathways on a macroscale, which leads to an increase in CHF of up to 2609 kW m−2.

show abstract

mentioning

confidence: 99%

Advances in Directional Wetting Surfaces for Enhanced Fluid Control: A Comprehensive Review

Li,

Kim,

Yoon

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Controlling surface wettability and directing the flow of working fluids have crucial implications in various natural and engineering contexts. Understanding the fundamental principles of wettability and directional wetting is essential for effectively leveraging these phenomena to enhance the performance of engineering systems, such as microfluidics or heat exchangers. This comprehensive review summarizes of previous research, emphasizing recent advances by categorizing the structures and working principles associated with directional wetting surfaces. The efforts of researchers who have employed diverse strategies to manipulate the wetting behavior of liquids through both passive and active control mechanisms are highlighted. Passive directional transport surfaces require no additional energy while enabling large‐scale and continuous fluid control. Conversely, active directional wetting surfaces offer enhanced flexibility and precise control of liquid movement. Furthermore, insights into recent studies that focused on practical applications are provided and the current challenges that need to be addressed are discussed. This study serves as a guide for future research directions on the development of directional wetting surfaces and offers valuable recommendations for practical implementation.

show abstract

Superbiphilic patterned nanowires with wicking for enhanced pool boiling heat transfer

Cited by 10 publications

References 69 publications

An Overview of Innovative Surface-Modification Routes for Pool Boiling Enhancement

An Overview of Innovative Surface-Modification Routes for Pool Boiling Enhancement

Aluminum Micropillar Surfaces with Hierarchical Micro- and Nanoscale Features for Enhancement of Boiling Heat Transfer Coefficient and Critical Heat Flux

Advances in Directional Wetting Surfaces for Enhanced Fluid Control: A Comprehensive Review

Contact Info

Product

Resources

About