Evaporation heat transfer characteristics of R-410A in 7 and 9.52 mm smooth/micro-fin tubes

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

In-tube evaporation heat transfer characteristics of R-410A 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 present study included measurements for evaporation over a refrigerant mass flux range of 70-211 kg/m2s, 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 R-410A as a function of mass flux, heat flux, evaporating temperature and tube diameter.

Original languageEnglish
Pages (from-to)716-730
Number of pages15
JournalInternational Journal of Refrigeration
Volume25
Issue number6
DOIs
Publication statusPublished - 2002 Sep 1

Fingerprint

Fins (heat exchange)
heat transfer
fins
evaporation
Heat flux
Evaporation
Mass transfer
Hot Temperature
Heat transfer
heat
temperature
heat transfer coefficient
Refrigerants
Temperature
Heat transfer coefficients
Pressure drop
Geometry
testing
Pressure

Keywords

  • Enhancement
  • Evaporation
  • Heat transfer
  • Mass transfer
  • Measurement
  • R410A
  • Smooth tube
  • Study

ASJC Scopus subject areas

  • Food Science
  • Mechanical Engineering

Cite this

Evaporation heat transfer characteristics of R-410A in 7 and 9.52 mm smooth/micro-fin tubes. / Kim, Yong Chan; Seo, Kookjeong; Chung, Jin Taek.

In: International Journal of Refrigeration, Vol. 25, No. 6, 01.09.2002, p. 716-730.

Research output: Contribution to journalArticle

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