Effect of biomimetic fishbone-patterned copper tubes on pool boiling heat transfer

Hui Chung Cheng, Yu Ying Chen, Tien Li Chang, Ping Hei Chen

Research output: Contribution to journalArticle

Abstract

The effect of laser-textured copper surfaces on pool boiling heat transfer in copper tubes was experimentally investigated by using deionized water as a working fluid under ambient environmental conditions. The picosecond laser system was used to apply fishbone patterns on cylindrical copper surfaces. All pool boiling experiments were performed using a saturated working fluid, and the heat flux was up to 426 kW/m2 in these experiments. The heat transfer coefficient of laser-textured dense fishbone sample exhibited a factor up to 1.12 at the highest evaluated heat flux. Bubble dynamics were studied using images recorded using high-speed cameras under different heat flux regimes. In addition, the effect of laser-textured surfaces on the temperature distribution during pool boiling along cylindrical surfaces was analyzed.

Original languageEnglish
Article number120371
JournalInternational Journal of Heat and Mass Transfer
Volume162
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • Bubble dynamics
  • Heterogeneous surface
  • Homogeneous surface
  • Picosecond laser
  • Pool boiling
  • Surface wettability

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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