Enhancement of phase change heat transfer by using surface energy patterning techniques

Tzong Shyng Leu, Hung Wen Lin, Tseng Hsin Wu

研究成果: Conference contribution

7 引文 斯高帕斯(Scopus)

摘要

Using phase change of working fluid to remove heat in a heat exchanger device is a high efficiency method. When superheated vapor passes over a sub-cooled substrate, water droplets nucleate and grow by coalescence with the surrounding drops. The merging droplets exhibit two-dimensional random motion somewhat like the Brownian movements of colloidal particles. If surface energy patterns are designed on the substrate surface, the random condensing droplets will nucleate and grow to a certain size and move toward the more hydrophilic side of the surface. Powered by this forces, condenser surface will not grow into film-wise condensation situation. Thus condensation speeds are faster than those of typical surfaces without any surface modification. This effect has implications for passively enhancing heat transfer in heat exchangers or heat pipes.

原文English
主出版物標題Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
頁面994-998
頁數5
DOIs
出版狀態Published - 2006
事件1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS - Zhuhai, China
持續時間: 2006 一月 182006 一月 21

出版系列

名字Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS

Other

Other1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
國家China
城市Zhuhai
期間06-01-1806-01-21

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Materials Science (miscellaneous)

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