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Critical heat flux performance for flow boiling of R134a in vertical uniformly heated smooth tube and rifled tubes.

Author(s) : KIM C. H., BANG I. C., CHANG S. H.

Type of article: Article

Summary

In the paper, critical heat flux (CHF) experiments for flow boiling of R134a were performed to investigate the CHF characteristics of four-head and six-head rifled tubes in comparison with a smooth tube. Both of rifled tubes having different head geometry have the maximum inner diameter of 17.04 mm while the smooth tube has the average inner diameter of 17.04 mm. The experiments were conducted for the vertical orientation under outlet pressures of 13, 16.5, and 23.9 bars, mass fluxes of 285-1300 kg/m2s and inlet subcooling temperatures of 5-40 °C in the R134a CHF test loop.

Details

  • Original title: Critical heat flux performance for flow boiling of R134a in vertical uniformly heated smooth tube and rifled tubes.
  • Record ID : 2006-0124
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 48 - n. 14
  • Publication date: 2005/07

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