Permeability measurement and analysis for the porous wick in cryogenic loop heat pipe

Ya Nan Zhao*, Tao Yan, Jing Tao Liang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The porous wick in a cryogenic loop heat pipe is a porous structure sintered by stainless steel powder which provides impetus for the working fluid circulation. Permeability is an important parameter of the porous wick and affects the pressure drop of the working fluid flowing through the porous wick. This article presents an experimental system for measuring permeability based on Darcy's law. The experiments are performed at room temperature with ethanol as the working fluid, while high-pressure N2 equipment is used to press on the working fluid and accelerate the fluid flow. A series of data of mass flow under different pressure are obtained in the experiment from which the permeability could be figured out. The article analyzes the relationship between driving pressure and permeability in the laminar flow region and gets a reliable permeability value.

Original languageEnglish
Pages (from-to)1093-1096
Number of pages4
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Volume31
Issue number7
Publication statusPublished - Jul 2010
Externally publishedYes

Keywords

  • Cryogenic loop heat pipe
  • Permeability
  • Porous wick

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Zhao, Y. N., Yan, T., & Liang, J. T. (2010). Permeability measurement and analysis for the porous wick in cryogenic loop heat pipe. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics, 31(7), 1093-1096.