Evaluation of void fraction prediction methods for two-phase flow evaporative pressure drop of R-744 and R-290 in horizontal small tubes

Kwang IL Choi, Agus Sunjarianto Pamitran, Jong Taek Oh, Hoo Kyu Oh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An experimental study on two-phase flow boiling pressure drop with R-744 and R-290 in horizontal circular small tubes to evaluate void fraction prediction methods is presented. The experimental data were obtained over a heat flux range of 5 to 30 kW m-2, mass flux range of 50 to 600 kg m-2 s-1, saturation temperature range of 10°C, and quality up to 1.0. The test section was made of stainless steel tubes with inner diameters of 1.5 mm and 3.0 mm, and length of 2000 mm. The experimental pressure drop was compared with some existing pressure drop correlations. Existing void fraction prediction methods were evaluated for the two-phase flow evaporative pressure drop. A new pressure drop correlation using homogenous void fraction model is developed.

Original languageEnglish
Title of host publication5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia
Subtitle of host publicationFrontiers of Refrigerants, Heat Transfer and System
PublisherJapan Society of Refrigeration and Air Conditioning Engineering (JSRAE)
ISBN (Electronic)9781634391252
Publication statusPublished - 1 Jan 2010
Event5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010 - Tokyo, Japan
Duration: 7 Jun 20109 Jun 2010

Publication series

Name5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System

Conference

Conference5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010
CountryJapan
CityTokyo
Period7/06/109/06/10

Keywords

  • Flow boiling
  • Horizontal small tubes
  • Pressure drop
  • Refrigerant
  • Void fraction

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