Supersonically spray-coated copper meshes as textured surfaces for pool boiling
- Authors
- Jo, Hong Seok; Kim, Min-Woo; Kim, Tae Gun; An, Seongpil; Park, Hyun-Goo; Lee, Jong-Gun; James, Scott C.; Choi, Jeehoon; Yoon, Sam S.
- Issue Date
- 10월-2018
- Publisher
- ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
- Keywords
- Supersonic spraying; Copper nanoparticles; Pool boiling; Superheat temperature; Critical heat flux
- Citation
- INTERNATIONAL JOURNAL OF THERMAL SCIENCES, v.132, pp.26 - 33
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF THERMAL SCIENCES
- Volume
- 132
- Start Page
- 26
- End Page
- 33
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/72603
- DOI
- 10.1016/j.ijthermalsci.2018.05.041
- ISSN
- 1290-0729
- Abstract
- Pool boiling is a process through which heat is removed upon the vaporization of a coolant fluid surrounding a heated surface and is often applied for cooling high-performance computing systems and nuclear reactors. Increasing the surface-to-volume ratio in confined spaces enhances this cooling method. Here, we introduce textured copper pillars with various geometric arrangements and study their effects on the pool-boiling performance. Frustum pyramids were formed by supersonic spraying copper microparticles through a wire mesh to form pillars of various sizes. We identified an optimal pyramid-base size of 0.91 mm on each side corresponding to the maximum heat transfer coefficient, critical heat flux, boiling heat transfer, and cross-flow coolant velocity over the pyramids. Maximum bubble nucleation was also achieved using this specific geometric arrangement. Such a geometric design can be installed in heat pipe cooling systems to cool electronic devices and nuclear reactors.
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- Appears in
Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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