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›› 2005, Vol. 22 ›› Issue (2): 157-163.DOI: 10.7523/j.issn.2095-6134.2005.2.006

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Experimental Investigation of Laminar Heat Transfer in Silicon Microchannels with New Structure

GAN Yun-Hua1,2, XU Jin-Liang1   

  1. 1. Microscale Energy System Laboratory, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
    2. Department of Thermal Science and Energy Engineering, University of Scie nce and Technology of China, Hefei 230026, China
  • Received:2004-06-06 Revised:2004-07-14 Online:2005-03-15

Abstract:

In order to both enhance heat transfer and reduce flow resistance, microchannels having new interlaced structure with hydraulic diameter of 15513 Lm were designed based on the breaking-up thermal boundary layer technology. Using deionized water as working fluid, keeping the three control parameters ) inlet temperature, heating power, andmass flux ) very close, comparative experiments were carried out between the test section having the new interlaced structure microchannels and the test section having conventional structure microchannels. And experimental results show that applying the new structure can diminish pressure drop across test section, reduce friction constant, enhance heat transfer and drop the wall temperature.

Key words: MEMS, breaking-up thermal boundary layer technology, heat transfer enhancement

CLC Number: