Heat transfer coefficient of two-phase flow boiling with low vapor quality

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

Abstract

The use of HCFCs refrigerants are gradually being replaced by HFCs and hydrocarbons refrigerants that has zero ODP (Ozone Depletion Potential). R-290 (propane) is a hydrocarbon refrigerant with C3H8 molecular structure. In this research, the flow boiling heat transfer occurs inside small tube with diameter of 7.6 mm and length of 1.07 m. In order to determine the value of heat transfer coefficient, the experiment were carried out for mass fluxes ranging from 200 kg/m2s to 400 kg/m2s, heat fluxes ranging from 5 kW/m2to 20 kW/m2, and saturation temperatures from 5°C to 15°C. This study analyzed the heat transfer through the local heat transfer coefficient along the flow for low vapor quality region. The boiling heat transfer coefficient of R-290 is influenced by heat flux, mass flux, and saturation temperature. In comparison to previous boiling heat transfer correlations, the correlation of Shah (1982) best fitted the experimental result with the mean deviation of 32.20%. A new correlation for boiling heat transfer coefficient was developed by modification of F factor with regression method. The new correlation has smaller mean deviation of 22.46% in comparison with the present experimental result.

Original languageEnglish
Title of host publication24th IIR International Congress of Refrigeration, ICR 2015
PublisherInternational Institute of Refrigeration
Pages879-886
Number of pages8
ISBN (Electronic)9782362150128
DOIs
Publication statusPublished - 1 Jan 2015
Event24th IIR International Congress of Refrigeration, ICR 2015 - Yokohama, Japan
Duration: 16 Aug 201522 Aug 2015

Publication series

NameRefrigeration Science and Technology
ISSN (Print)0151-1637

Conference

Conference24th IIR International Congress of Refrigeration, ICR 2015
CountryJapan
CityYokohama
Period16/08/1522/08/15

Keywords

  • Correlation
  • F factor
  • Flow boiling
  • Heat transfer
  • R-290
  • Vapor quality

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