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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationProceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
Pages1127-1131
Number of pages5
EditionPART B
DOIs
StatePublished - 1 Dec 2009
Event7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009 - Pohang, Korea, Republic of
Duration: 22 Jun 200924 Jun 2009

Publication series

NameProceedings of the 7th International Conference on Nanochannels, Microchannels, and Minichannels 2009, ICNMM2009
NumberPART B

Conference

Conference7th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2009
CountryKorea, Republic of
CityPohang
Period22/06/0924/06/09

Keywords

  • Flow reversal
  • HFE-7100
  • Multiport microchannel

Fingerprint Dive into the research topics of 'Heat transfer and pressure drop characteristics for HFE-7100 within microchannel heat sinks'. Together they form a unique fingerprint.

Cite this