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Forced convective boiling heat transfer of R410A in horizontal minichannels.

Author(s) : PAMITRAN A. S., CHOI K. I., OH J. T., et al.

Type of article: Article, IJR article

Summary

Convective boiling heat transfer experiments were performed in horizontal minichannels with binary mixture refrigerant, R410A. The test section is made of stainless steel tubes with inner diameters of 1.5 and 3.0 mm and with lengths of 1500 and 3000 mm, respectively, and is uniformly heated by applying electric current directly to the tubes. Local heat transfer coefficients were obtained for a heat flux range of 10-30 kW/m2, a mass flux range of 300-600 kg/m2.s, and quality ranges of up to 1.0. The experimental results were mapped on Wang et al. and Wojtan et al. flow pattern maps to observe the flow regimes. Laminar flow appears in flow with minichannels. A new boiling heat transfer coefficient correlation based on the superposition model for R410A was developed with 11.20% mean deviation; it showed a good agreement between the measured data and the calculated heat transfer coefficients.

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Pages: 155-165

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Details

  • Original title: Forced convective boiling heat transfer of R410A in horizontal minichannels.
  • Record ID : 2006-2853
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 1
  • Publication date: 2007/01

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