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Evaporation heat transfer characteristics of R410A in 7 and 9.52 mm smooth/micro-fin tubes.

Author(s) : KIM Y., SEO K., CHUNG J. T.

Type of article: Article, IJR article

Summary

In-tube evaporation heat transfer characteristics of R410A were experimentally investigated and analyzed as a function of evaporating temperature, mass flux, heat flux, and tube geometry. Evaporation heat transfer coefficients and pressure drops were measured for 3.0 m long smooth and micro-fin tubes with outer diameters of 9.52 and 7.0 mm, respectively. The test matrix in the study included measurements for evaporation over a refrigerant mass flux range of 70-211 kg/m2.s, a heat flux range of 5-15 kW/m2 and an evaporating temperature range of -15 to 5. The objective of this study is to evaluate the heat transfer enhancement of the micro-fin tube with R410A as a function of mass flux, heat flux, evaporating temperature and tube diameter.

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Pages: 716-730

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Details

  • Original title: Evaporation heat transfer characteristics of R410A in 7 and 9.52 mm smooth/micro-fin tubes.
  • Record ID : 2003-0098
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 25 - n. 6
  • Publication date: 2002/09

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