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An elemental NTU-heat exchanger effectiveness model for vapour-compression liquid chillers.

Author(s) : BROWNE M. W., BANSAL P. K.

Type of article: Article, IJR article

Summary

The paper presents a steady-state model for predicting the performance of vapour-compression liquid chillers over a wide range of operating conditions. The model overcomes the idealisations of previous models with regard to modelling the heat exchangers. In particular, it employs an elemental NTU-methodology to model both the shell-and-tube condenser and evaporator. The approach allows the change in heat transfer coefficients throughout the heat exchangers to be accounted for, thereby improving both physical realism and the accuracy of the simulation model. The model requires only those inputs that are readily available to the user. The outputs of the model include system performance variables such as the compressor electrical work input and the COP as well as states of the refrigerant throughout the refrigeration cycle.

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Pages: 612-627

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Details

  • Original title: An elemental NTU-heat exchanger effectiveness model for vapour-compression liquid chillers.
  • Record ID : 2001-2687
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 24 - n. 7
  • Publication date: 2001/11

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