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Experimental facility for the study of liquid overfeed fin-and-tube evaporators: validation of numerical models.

Author(s) : DANOV S. V., OLIET C., PÉREZ-SEGARRA C. D.

Type of article: Article

Summary

An experimental facility specially designed for the study of liquid overfeed fin-and-tube evaporators was developed. It is intended for the experimental validation of a detailed liquid overfeed evaporator model, permitting testing as either a part of the refrigeration system or in a loop without a compressor. The facility can also be used for the experimental evaluation of refrigeration system performance-prediction models. A detailed description of the facility and its instrumentation, emphasizing the data uncertainty analysis and the verification techniques, is provided. A method for experimentally estimating the systematic uncertainties in the measurement of the temperature sensors after calibration, accounting for the whole signal path, is also presented. Results from a detailed numerical model of liquid overfeed evaporators, developed for design optimization, were compared with the experimental data. Six well-known correlations for the two-phase flow heat transfer coefficients were studied in order to assess their influence in the overall evaporator performance prediction.

Details

  • Original title: Experimental facility for the study of liquid overfeed fin-and-tube evaporators: validation of numerical models.
  • Record ID : 2008-1603
  • Languages: English
  • Source: HVAC&R Research - vol. 14 - n. 2
  • Publication date: 2008/03

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