Heat transfer and pressure drop characteristics for HFE-7100 within microchannel heat sinks

Chun Min Huang, Yeau Ren Jeng, Kai Shing Yang, Chi Chuan Wang, Yu Lieh Wu

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This study examines the heat transfer and pressure drop characteristics of the dielectric fluid HFE-7100 within multiport microchannel heat sink having a square configuration rectangular with a hydraulic diameter of 460 μm. For a lower mass flux of 100 or 200 kg/m2·s, it is found that the heat transfer coefficients are roughly independent of heat flux and vapor quality provided that no flow reversal occurs. However, with the presence of flow reversal at an elevated heat flux, appreciable drop of heat transfer coefficient is encountered. The flow reversal also plays a significant role in the overall pressure drop. Without flow reversal, the pressure drop for higher heat flux always exceeds that of lower heat flux due to acceleration contribution. However, the presence of flow reversal may offset the contribution of acceleration and results in a negligible effect of heat flux. For a higher mass flux like 300 kg/m2·s, the heat transfer coefficients are virtually independent of vapor quality and heat flux.

原文English
主出版物標題Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
頁面1127-1131
頁數5
版本PART B
DOIs
出版狀態Published - 2009 十二月 1
事件7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009 - Pohang, Korea, Republic of
持續時間: 2009 六月 222009 六月 24

出版系列

名字Proceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
號碼PART B

Other

Other7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009
國家/地區Korea, Republic of
城市Pohang
期間09-06-2209-06-24

All Science Journal Classification (ASJC) codes

  • 流體流動和轉移過程
  • 機械工業

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