Enhanced capillary and heat transfer performance of asymmetric micropost wicks

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 65
  • Download : 0
We developed asymmetric capillary wicks composed of slanted microposts using inclined photolithography. Then we investigated the effects of inclination angle and wicking direction on the capillary and the heat transfer performances. The working fluid accelerates when it flows in the slope direction of the structure (forward direction, FD) and decelerates when it flows in the opposite slope direction (rear direction, RD). We applied the scaling law to the capillary rise experiment data to verify that the inclination angle and the wicking direction affect the capillary performance. The capillary performance parameter was improved by up to similar to 39% with FD case and decreased by 21.3% with RD. The heat transfer performance test showed that the wick-CHF (the enhanced critical heat flux due to the formation of the wick) of the asymmetric FD case was increased by 43.3% compared to symmetric ones while maintaining the heat transfer coefficient. This work shows that asymmetric evaporator wicks can enhance the critical heat flux without sacrificing the heat transfer coefficient, which can help develop high-performance thermal management solutions.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2023-07
Language
English
Article Type
Article
Citation

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, v.146

ISSN
0735-1933
DOI
10.1016/j.icheatmasstransfer.2023.106935
URI
http://hdl.handle.net/10203/311862
Appears in Collection
ME-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0