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Application of CFD models to two-phase flow in refrigerant distributors.

Author(s) : BRAUN J. E., GROLL E. A.

Type of article: Article

Summary

The goal of the work described in this article was to identify an appropriate CFD model for refrigerant distributors and to apply the model to develop improved designs. As a first step, results of predictions using different two-phase modelling approaches available within commercial CFD codes were compared with experimental results from the literature for two-phase flow distribution with air and water as working fluids. In general, it is better to utilize a spherical distributor base as compared with other shapes and to locate the orifice close to the distributor base. These changes tend to improve the robustness of the distributor in terms of providing even flow and phase distribution in different outlet branches when the orifice and/or distributor are not oriented optimally. In addition, experiments were performed that tend to validate the general trends associated with the CFD results for refrigerant distributions.

Details

  • Original title: Application of CFD models to two-phase flow in refrigerant distributors.
  • Record ID : 2005-2542
  • Languages: English
  • Source: HVAC&R Research - vol. 11 - n. 1
  • Publication date: 2005/01

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