Supercapillary Architecture‐Activated Two‐Phase Boundary Layer Structures for Highly Stable and Efficient Flow Boiling Heat Transfer
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 11, 2019
- Source ID
- 10.1002/adma.201905117
Entities
People
- Ahmed Shehab Khan
- Chen Li
- Fanghao Yang
- Fengyu Kong
- Mengnan Jiang
- Minjie Liu
- Mohammad Alwazzan
- Tamanna Alam
- Wenming Li
- Xiaopeng Qu
- Yan Tong
- Zuankai Wang
Organizations
- City University of Hong Kong
- National Aeronautics and Space Administration
- National Natural Science Foundation of China
- National Science Foundation
- Office of Naval Research
- Princeton Plasma Physics Laboratory
- University of South Carolina