Supercapillary Architecture-Activated Two-Phase Boundary Layer Structures for Highly Stable and Efficient Flow Boiling Heat Transfer

Wenming Li, Zuankai Wang, Fanghao Yang, Tamanna Alam, Mengnan Jiang, Xiaopeng Qu, Fengyu Kong, Ahmed Shehab Khan, Minjie Liu, Mohammad Alwazzan, Yan Tong, Chen Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

70 Citations (Scopus)

Abstract

Development of smaller, faster, and more powerful electronic devices requires effective cooling strategies to efficiently remove ever-greater heat. Phase-change heat transfer such as boiling and evaporation has been widely exploited in various water-energy industries owing to its efficient heat transfer mode. Despite extensive progress, it remains challenging to achieve the physical limit of flow boiling due to highly transitional and chaotic nature of multiphase flows as well as unfavorable boundary layer structures. Herein, a new strategy that promises to approach the physical limit of flow boiling heat transfer is reported. The flow boiling device with multiple channels is characterized with the design of micropinfin fences, which fundamentally transforms the boundary layer structures and imparts significantly higher heat transfer coefficient even at high heat flux conditions, in which boiling heat transfer is usually deteriorated due to the development of dryout starting from outlet regions and severe two-phase flow instabilities. Moreover, the approaching of physical limit is achieved without elevating pressure drop.

Original languageEnglish
Article number1905117
JournalAdvanced Materials
Volume32
Issue number2
DOIs
Publication statusPublished - 1 Jan 2020
Externally publishedYes

Keywords

  • boundary layer
  • phase change
  • physical limit
  • supercapillary architecture
  • two-phase separation

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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