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Horizontal flow boiling of R22 and R407C in a 9.52 millimeters micro-fin tube.

Author(s) : KUO C. S., WANG C. C.

Type of article: Article

Summary

The two-phase heat transfer coefficient and pressure drop characteristics of refrigerant R22 and R407C (a mixture of R32-R125-R134a, 23-25-52%) in a micro-fin tube with nominal diameter 9.52 millimeters were presented in the study. Experimental data were taken at an evaporation pressure of 600 kilopascals. The mass flux was between 100 and 300 kilogrammes/m2.s and the heat fluxes were between 6 and 14 kilowatts/m2. It is found that the heat transfer coefficients for R407C are considerably lower than R22 (50-80% less), and the pressure drop of R407C is 30-50% lower as compared to R22.

Details

  • Original title: Horizontal flow boiling of R22 and R407C in a 9.52 millimeters micro-fin tube.
  • Record ID : 1997-2053
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 16 - n. 8-9
  • Publication date: 1996/08

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