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

Peiwen Li, Min Chen, Wen Quan Tao

Research output: Contribution to journalArticle

6 Citations (Scopus)

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/m2 s, 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
StatePublished - 2000
Externally publishedYes

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norflurane
forced convection
Forced convection
Heat transfer coefficients
Condensation
Mass transfer
condensation
heat transfer
Vapors
tubes
Heat transfer
annular flow
condensing
heat transfer coefficients
Experiments
vapors
deviation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

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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/m2 s, 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.",
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T1 - Theoretical analysis and experimental investigation on local heat transfer characteristics of HFC-134a forced-convection condensation inside smooth horizontal tubes

AU - Li, Peiwen

AU - Chen, Min

AU - Tao, Wen Quan

PY - 2000

Y1 - 2000

N2 - 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/m2 s, 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.

AB - 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/m2 s, 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.

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