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Caractéristiques de la chute de pression diphasique due au frottement lors de la condensation en écoulement d'un mélange de R410A et d'huile à l'intérieur de tubes lisses horizontaux avec des diamètres de 4,18 mm et de 1,6 mm.

Two-phase frictional pressure drop characteristics of R410A-oil mixture flow condensation inside 4.18 mm and 1.6 mm I.D. horizontal smooth tubes.

Author(s) : HUANG X., DING G., HU H., et al.

Type of article: Article

Summary

Two-phase frictional pressure drop characteristics of R410A-oil mixture flow condensation inside 4.18 mm (0.165 in) and 1.6 mm (0.063 in) I.D. diameter horizontal smooth tubes were investigated experimentally. The experimental condensing temperature is 40°C (104°F), and the nominal oil concentration range is from 0 to 5%. The test results indicate that the presence of oil always decreases the flow condensation frictional pressure drop, and the decrement increases with the nominal oil concentration. The decrements for 4.18 mm (0.165 in.) and 1.6 mm (0.063 in.) are 1~19.5% and 1.5~17.4% tubes, respectively. A new correlation for the frictional pressure drop of R410A-oil mixture flow condensation inside smooth tubes is proposed and agrees with 96% of the experimental data within a deviation of –20~+30%.

Details

  • Original title: Two-phase frictional pressure drop characteristics of R410A-oil mixture flow condensation inside 4.18 mm and 1.6 mm I.D. horizontal smooth tubes.
  • Record ID : 30002310
  • Languages: English
  • Source: HVAC&R Research - vol. 16 - n. 4
  • Publication date: 2010/07

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