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Comparison of models for calculation of the thermodynamic properties of NH3-CO2-H2O mixture.

Number: pap. 2176

Author(s) : GUDJONSDOTTIR V., INFANTE FERREIRA C. A.

Summary

In the past several attempts have been made to fit experimental data of the mixture NH3-CO2-H2O making use of thermodynamic models. The most commonly used model for process calculations is the electrolyte NRTL model. The model is available in the Aspen Plus software (version 8.8) both in its original form as well as modified versions where parameters have been fitted especially for the NH3-CO2-H2O system. In this paper these models and a new fit are compared to the Extended UNIQUAC model. Comparison of the models shows a clear improvement of the modified models over the original e-NRTL model. The better fitted models compare well to the extended UNIQUAC model which gives good results for its application range.

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Pages: 10

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Details

  • Original title: Comparison of models for calculation of the thermodynamic properties of NH3-CO2-H2O mixture.
  • Record ID : 30018953
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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