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.
| Original language | English |
|---|---|
| Pages (from-to) | 26-33 |
| Number of pages | 8 |
| Journal | International Journal of Thermal Sciences |
| Volume | 132 |
| DOIs | |
| Publication status | Published - 2018 Oct 1 |
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Keywords
- Copper nanoparticles
- Critical heat flux
- Pool boiling
- Superheat temperature
- Supersonic spraying
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)
Cite this
Supersonically spray-coated copper meshes as textured surfaces for pool boiling. / Jo, Hong Seok; Kim, Min Woo; Kim, Tae Gun; An, Seongpil; Park, Hyun Goo; Lee, Jong Gun; James, Scott C.; Choi, Jeehoon; Yoon, Suk Goo.
In: International Journal of Thermal Sciences, Vol. 132, 01.10.2018, p. 26-33.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Supersonically spray-coated copper meshes as textured surfaces for pool boiling
AU - Jo, Hong Seok
AU - Kim, Min Woo
AU - Kim, Tae Gun
AU - An, Seongpil
AU - Park, Hyun Goo
AU - Lee, Jong Gun
AU - James, Scott C.
AU - Choi, Jeehoon
AU - Yoon, Suk Goo
PY - 2018/10/1
Y1 - 2018/10/1
N2 - 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.
AB - 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.
KW - Copper nanoparticles
KW - Critical heat flux
KW - Pool boiling
KW - Superheat temperature
KW - Supersonic spraying
UR - http://www.scopus.com/inward/record.url?scp=85047790902&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85047790902&partnerID=8YFLogxK
U2 - 10.1016/j.ijthermalsci.2018.05.041
DO - 10.1016/j.ijthermalsci.2018.05.041
M3 - Article
AN - SCOPUS:85047790902
VL - 132
SP - 26
EP - 33
JO - International Journal of Thermal Sciences
JF - International Journal of Thermal Sciences
SN - 1290-0729
ER -