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 |
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Pages (from-to) | 26-33 |
Number of pages | 8 |
Journal | International Journal of Thermal Sciences |
Volume | 132 |
DOIs | |
Publication status | Published - 2018 Oct |
Keywords
- Copper nanoparticles
- Critical heat flux
- Pool boiling
- Superheat temperature
- Supersonic spraying
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)