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Non-adiabatic capillary tube flow: a homogeneous model and process description.

Author(s) : XU B., BANSAL P. K.

Type of article: Article

Summary

This paper presents a homogeneous model of refrigerant flow through capillary tube-suction line heat exchangers. The homogeneous model is based on fundamental conservation equations of mass, momentum and energy. These equations are solved simultaneously through iterative process. Churchill's correlation [3] is used to calculate single-phase friction factors and Lin et al. [6] correlation for two-phase friction factors. The single-phase heat transfer coefficient is calculated by Gnielinski's equation [5] while two-phase flow heat transfer coefficient is assumed to be infinite. The model is validated with previous experimental and analytical results. The simulation model is used to understand refrigerant flow behaviour inside non-adiabatic capillary tubes.

Details

  • Original title: Non-adiabatic capillary tube flow: a homogeneous model and process description.
  • Record ID : 2003-2733
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 22 - n. 16
  • Publication date: 2002/11

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