Enhanced nucleate boiling in microchannels

Lian Zhang, Evelyn N. Wang, Jae Mo Koo, Linan Jiang, Kenneth E. Goodson, Juan G. Santiago, Thomas W. Kenny

Research output: Contribution to conferencePaperpeer-review

23 Scopus citations

Abstract

This paper studies the nucleate boiling conditions and mechanisms in plasma etched silicon microchannels below 150 μm hydraulic diameter. Boiling regimes and the wall superheat in microchannels with various DI water surface tensions and wall surface roughness are discussed. The experiments show that wall superheat in microchannels is primarily due to the lack of active nucleation sites rather than limited channel space or a high liquid surface tension. By creating small cavities in the channel walls, superheat can be eliminated from as small as 28 μm hydraulic diameter silicon channels.

Original languageEnglish (US)
Pages89-92
Number of pages4
StatePublished - 2002
Externally publishedYes
Event15th IEEE International Conference on Micro Electro Mechanical Systems MEMS 2002 - Las Vegas, NV, United States
Duration: Jan 20 2002Jan 24 2002

Other

Other15th IEEE International Conference on Micro Electro Mechanical Systems MEMS 2002
Country/TerritoryUnited States
CityLas Vegas, NV
Period1/20/021/24/02

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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