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Comparison of moving boundary and finite-volume heat exchangers models in the Modelica language

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Abstract
When modelling low capacity energy systems such as a small (5–150 kWel) organic Rankine cycle unit, the governing dynamics are mainly concentrated in the heat exchangers. As a consequence, accuracy and simulation speed of the higher level system model mainly depend on the heat exchanger model formulation. In particular, the modelling of thermodynamic systems characterized by evaporation or condensation, requires heat exchanger models capable of handling phase transitions. To this aim, the finite volume (FV) and the moving boundary (MB) approaches are the most widely used. The two models are developed and included in the open-source ThermoCycle Modelica library. In this contribution a comparison between the two approaches is performed. Their performance is tested in terms of model integrity and accuracy during transient conditions. Furthermore the models are used to simulate the evaporator of an ORC system and their responses are validated against experimental data collected on an 11 kWel ORC power unit.

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MLA
Desideri, Adriano et al. “Comparison of Moving Boundary and Finite-volume Heat Exchangers Models in the Modelica Language.” Proceedings of the 3rd International Seminar on ORC Power Systems. 2015. Print.
APA
Desideri, A., Wronski, J., Dechesne, B., van den Broek, M., Gusev, S., Quoilin, S., & Lemort, V. (2015). Comparison of moving boundary and finite-volume heat exchangers models in the Modelica language. Proceedings of the 3rd International Seminar on ORC Power Systems. Presented at the 3rd International Seminar on ORC Power Systems.
Chicago author-date
Desideri, Adriano, Jorrit Wronski, Bertrand Dechesne, Martijn van den Broek, Sergei Gusev, Sylvain Quoilin, and Vincent Lemort. 2015. “Comparison of Moving Boundary and Finite-volume Heat Exchangers Models in the Modelica Language.” In Proceedings of the 3rd International Seminar on ORC Power Systems.
Chicago author-date (all authors)
Desideri, Adriano, Jorrit Wronski, Bertrand Dechesne, Martijn van den Broek, Sergei Gusev, Sylvain Quoilin, and Vincent Lemort. 2015. “Comparison of Moving Boundary and Finite-volume Heat Exchangers Models in the Modelica Language.” In Proceedings of the 3rd International Seminar on ORC Power Systems.
Vancouver
1.
Desideri A, Wronski J, Dechesne B, van den Broek M, Gusev S, Quoilin S, et al. Comparison of moving boundary and finite-volume heat exchangers models in the Modelica language. Proceedings of the 3rd International Seminar on ORC Power Systems. 2015.
IEEE
[1]
A. Desideri et al., “Comparison of moving boundary and finite-volume heat exchangers models in the Modelica language,” in Proceedings of the 3rd International Seminar on ORC Power Systems, Brussels, Belgium, 2015.
@inproceedings{6952522,
  abstract     = {When modelling low capacity energy systems such as a small (5–150 kWel) organic Rankine cycle unit,
the governing dynamics are mainly concentrated in the heat exchangers. As a consequence, accuracy
and simulation speed of the higher level system model mainly depend on the heat exchanger model
formulation. In particular, the modelling of thermodynamic systems characterized by evaporation or
condensation, requires heat exchanger models capable of handling phase transitions. To this aim, the
finite volume (FV) and the moving boundary (MB) approaches are the most widely used. The two models
are developed and included in the open-source ThermoCycle Modelica library. In this contribution a
comparison between the two approaches is performed. Their performance is tested in terms of model
integrity and accuracy during transient conditions. Furthermore the models are used to simulate the
evaporator of an ORC system and their responses are validated against experimental data collected on
an 11 kWel ORC power unit.},
  author       = {Desideri, Adriano and Wronski, Jorrit and Dechesne, Bertrand and van den Broek, Martijn and Gusev, Sergei and Quoilin, Sylvain and Lemort, Vincent},
  booktitle    = {Proceedings of the 3rd International Seminar on ORC Power Systems},
  language     = {eng},
  location     = {Brussels, Belgium},
  pages        = {10},
  title        = {Comparison of moving boundary and finite-volume heat exchangers models in the Modelica language},
  url          = {http://www.asme-orc2015.be/online/proceedings.htm},
  year         = {2015},
}