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Automated modelling of complex refrigeration cycles through topological structure analysis.

Author(s) : BELMAN-FLORES J. M., RIESCO-ÁVILA J. M., GALLEGOS-MUÑOZ A., et al.

Type of article: Article

Summary

The authors have developed a computational method for analysis of refrigeration cycles. The method is well suited for automated analysis of complex refrigeration systems. The refrigerator is specified through a description of flows representing thermodynamic sates at system locations; components that modify the thermodynamic state of a flow; and controls that specify flow characteristics at selected points in the diagram. A system of equations is then established for the refrigerator, based on mass, energy and momentum balances for each of the system components. Controls specify the values of certain system variables, thereby reducing the number of unknowns. It is found that the system of equations for the refrigerator may contain a number of redundant or duplicate equations, and therefore further equations are necessary for a full characterization. The number of additional equations is related to the number of loops in the cycle, and this is calculated by a matrix-based topological method. The methodology is demonstrated through an analysis of a two-stage refrigeration cycle. [Reprinted with permission from Elsevier. Copyright, 2009].

Details

  • Original title: Automated modelling of complex refrigeration cycles through topological structure analysis.
  • Record ID : 2010-1103
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 29 - n. 17-18
  • Publication date: 2009/12
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2009.06.014

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