期刊
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
卷 46, 期 14, 页码 19566-19573出版社
WILEY
DOI: 10.1002/er.8528
关键词
contact angle; heat transfer; spray cooling; surface property
资金
- Natural Science Foundation of Zhejiang Province [LZ20E060001]
- China Postdoctoral Science Foundation [2021M692768]
Spray cooling has a wide range of applications in the heat dissipation of high-power devices. The study found that surface roughness does not significantly affect the heat transfer coefficient in the non-boiling zone, while superhydrophilic/hydrophobic surfaces have lower heat transfer coefficients compared to smooth surfaces.
Spray cooling has a wide application prospect in the heat dissipation of high-power devices due to its excellent heat transfer performance and low demand for working medium. In this work, an experimental setup was built to investigate the heat transfer characteristics of the deionized water spray cooling in the non-boiling zone. Copper surfaces with different roughness conditions, as well as superhydrophilic/hydrophobic surfaces, were introduced to study the influence of surface property on cooling performance. Results show that no prominent change in heat transfer coefficient occurs due to the variation of roughness in the working conditions discussed. Furthermore, the superhydrophilic/hydrophobic surfaces experience a maximum reduction of 9.6% and 9.2% in heat transfer coefficient, respectively, compared with that of a smooth surface.
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