MELTING HEAT TRANSFER IMPROVEMENT BY VENATION-FINNED POROUS NETWORKS

Qun Han, Chengbin Zhang and Yongping Chen
Additional contact information
Qun Han: Jiangsu Key Laboratory of Micro and Nano, Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China†School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China
Chengbin Zhang: ��School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China
Yongping Chen: Jiangsu Key Laboratory of Micro and Nano, Heat Fluid Flow Technology and Energy Application, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China†School of Energy and Environment, Southeast University, Nanjing 210096, P. R. China

FRACTALS (fractals), 2022, vol. 30, issue 09, 1-19

Abstract: The venation-finned porous network has been demonstrated as a promising method to maximize the thermal transport access. To improve the heat storage efficiency, an innovative venation-finned porous network is employed here to enhance the melting performance of phase change materials (PCMs). The venation-finned porous network is quantitatively described by Murray’s law and Voronoi method, and a modified thermal lattice Boltzmann model of PCM melting processes in a square cavity is developed and numerically analyzed to optimize the venation-finned porous network. The melting performance of composite PCMs with three configurations (venation fin, porous network and venation-finned porous network) are compared and analyzed. Moreover, the effects of branching angle and Murray coefficient on melting performance are comprehensively studied. It indicates that venation-finned porous network is favorable to melting performance improvement due to venation’s inherent efficient heat transfer paths. Compared to venation fins and porous networks, the melting duration time of venation-finned porous networks is reduced by 78.4% and 21.4%, respectively. Furthermore, the branching angle of 45∘ and Murray coefficient of 3 are suggested for maximizing the melting efficiency. Importantly, the melting mechanism is conduction and convective conjugated heat transfer in composite PCMs with venation fins, however, it is dominated by heat conduction for those with porous networks or venation-finned porous networks.

Keywords: PCM; Melting Heat Transfer; Improvement; Fractal; Porous Network (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218348X22501808
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:fracta:v:30:y:2022:i:09:n:s0218348x22501808

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218348X22501808

Access Statistics for this article

FRACTALS (fractals) is currently edited by Tara Taylor

More articles in FRACTALS (fractals) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().