Effects of dissolved air on subcooled and saturated flow boiling of water in a small diameter tube at low pressure

Andrea Cioncolini*, Lorenzo Santini, Marco E. Ricotti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Experimental results on flow boiling of air saturated water flowing through a tube of inner diameter di = 4.03 mm are presented. Both subcooled and saturated flow boiling are investigated, covering pressures from 177 to 519 kPa, mass fluxes from 478 to 839 kg m-2 s-1 and heat fluxes from 210 to 736 kW m-2. By comparing the measured results with existing prediction methods derived for degassed liquids the study concludes that the presence of dissolved air in the testing fluid can be regarded as a second order effect, and no special attention to dissolved air appears required.

Original languageEnglish
Pages (from-to)38-51
Number of pages14
JournalExperimental Thermal and Fluid Science
Volume32
Issue number1
DOIs
StatePublished - Oct 2007
Externally publishedYes

Keywords

  • Dissolved gas
  • Enhancement
  • Flow boiling
  • Heat transfer
  • Noncondensable
  • Two-phase flow

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