Generalized adiabatic pressure drop correlations in evaporative micro/mini-channels

Research output: Contribution to journalArticle

Abstract

Existing database in literature on the adiabatic two-phase frictional pressure drop in evaporative micro/mini-channels were reviewed. The collected database contains 769 data points, covering 12 fluids, for a wide range of operational conditions and channel dimensions. The whole database was analyzed using five existing correlations to verify their respective accuracies. The importance of the Bond number, which relates the nominal bubble dimension or capillary parameter with the channel size, was revealed. A particular trend was observed with the Bond number that distinguished the entire database into three ranges. Using the Bond number, improved correlations of adiabatic two-phase pressure drop were established for small Bond number regions. The newly proposed correlations can predict the database well for the region where BoRel0.5 ≤ 200

Details

Authors
External organisations
  • Zhejiang University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering

Keywords

  • Bond number, Chisholm parameter, Micro-channel, Pressure drop, Two-phase multiplier
Original languageEnglish
Pages (from-to)866-872
JournalExperimental Thermal and Fluid Science
Volume35
Issue number6
Publication statusPublished - 2011
Publication categoryResearch
Peer-reviewedYes