The Analysis of Phase Separation in Vertical Headers of Microchannel HEs

Research output: Contribution to journalConference article

Abstract

This paper presents the experimental analysis of separation in vertical headers based on flow visualization. Two-phase separation phenomena inside the header is observed and quantified. Driving forces are analyzed to study the mechanisms for two-phase flow motion and flow regimes. Main tube of the header is made of clear PVC for visualization study. R-134a is used as the fluid of interest and the mass flux from the inlet pass is 55 kg/m2s - 195 kg/m2s. Potential ways to improve two-phase separation are discussed. A model is built to show how separation brings potential benefits to MAC heat exchangers by arranging the flow path.

Original languageEnglish (US)
JournalSAE Technical Papers
Volume2016-April
Issue numberApril
DOIs
StatePublished - Apr 5 2016
EventSAE 2016 World Congress and Exhibition - Detroit, United States
Duration: Apr 12 2016Apr 14 2016

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Microchannels
Phase separation
Flow visualization
Polyvinyl chlorides
Two phase flow
Heat exchangers
Mass transfer
Visualization
Fluids

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

The Analysis of Phase Separation in Vertical Headers of Microchannel HEs. / Li, Jun; Hrnjak, Predrag Stojan.

In: SAE Technical Papers, Vol. 2016-April, No. April, 05.04.2016.

Research output: Contribution to journalConference article

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