Theoretical analysis and experimental investigation on local heat transfer characteristics of HFC-134a forced-convection condensation inside smooth horizontal tubes

Pei Wen Li, Min Chen, Wen Quan Tao

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

An improved analysis model is presented for predicting the local heat transfer coefficient of forced condensation in the annular flow region inside smooth horizontal tubes. Heat transfer experiments for R-12 and R-134a are conducted inside a condensing tube with an inner diameter of 11 mm and a length of 13 m. The mass flux ranged from 200 to 510 kg/m2s, and the vapor qualities varied from 1.0 to 0.0. Compared with the experimental data, the numerical results have a deviation of not more than 20% and 25% for 80% of the total 47 points of R-12 and 88% of the total 226 points of R-134a, respectively.

Original languageEnglish (US)
Pages (from-to)34-43
Number of pages10
JournalHeat Transfer Engineering
Volume21
Issue number6
DOIs
StatePublished - Nov 2000
Externally publishedYes

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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