The Role of Pin Fin Array Configurations and Bubble Characteristics on the Pool Boiling Heat Transfer Enhancement
Penulis/Author
Indro Pranoto, Ph.D. (1); Muhammad Aulia Rahman (2); Ir. Joko Waluyo, M.T., Ph.D (3)
Tanggal/Date
8 2022
Kata Kunci/Keyword
Abstrak/Abstract
Pool boiling surface modification by pin fin array has demonstrated a practical but effective cooling enhancement. Whilst the main challenge is to determine the best configuration of the pin fin dimensions and positioning, it is known that the result varies among the working conditions. To obtain a more general formulation, it is utterly vital to obtain a deep understanding of the pool boiling mechanism during the phase-change process. This study aimed to analyze the role of pin fin array configuration on the pool boiling phenomenon by generating visualization and non-dimensional analysis. The results illustrated three different regimes occurring during the boiling process: natural convection, isolated bubble, and merged bubble. For all regimes, the average heat transfer performance was enhanced as the fin gap rose to 17% and 63% for circular and rectangular pin fins, respectively. Furthermore, Grashof (Gr) and Bond (Bo) numbers were calculated to quantitatively describe the effect on the bubble dynamics. From these approaches, it was found that the insulated bubble regime provides a better means of cooling by around 60% due to the better bubble dynamics.
Rumpun Ilmu
Teknik Mesin (dan Ilmu Permesinan Lain)
Bahasa Asli/Original Language
English
Level
Internasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
1
BUKTI KORESPONDENSI-Fluids-IP-Final-Combined.pdf
[PAK] Bukti Korespondensi Penulis
2
Full_Dokumen_Fluids MDPI_Indro Pranoto_The Role of Pin Fin Array-Compressed.pdf
