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Thermal system oriented heat exchanger models. Focus on moist air liquid cooled units with dehumidification.

Number: pap. n. 1211

Author(s) : TORRAS S., OLIET C., ABLANQUE N., et al.

Summary

The simulation of complex thermal systems including an increasing number of components, and specifically heat exchangers, is still attracting the attention of the researchers, both to reduce the time needed for the resolution and to improve the accuracy for such simplified models. In the heat exchanger field, simplified models are typically based on semi-analytical methods such e-NTU (for steady state analysis), or by using single volume transient models (with strong limitations to cover temperature crossing within the exchanger). The current paper describes the work of the authors in the development of simplified models for heat exchangers under the Modelica platform, trying to find a compromise between accuracy in steady state conditions, while maintaining the transient response of the component. In this case, the focus is given to liquid cooled air heat exchangers in an aircraft application, where the water condensation on the airside is of importance to characterize the performance.

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Pages: 9

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Details

  • Original title: Thermal system oriented heat exchanger models. Focus on moist air liquid cooled units with dehumidification.
  • Record ID : 30026736
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1211
  • Notes:

    Keynote


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