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Abstract
Numerical modeling of the two-phase expansion phenomenon may provide valuable tools for the evaluation of the efficiency of a Trilateral Flash Cycle (TFC) unit, as well as in the sizing and design optimization process of two-phase expanders. In the present work, a low-order thermodynamic model for the simulation of two-phase expansion in twin-screw expanders has been developed. The model simulates the phase change in the expansion chamber by discretizing it in a sufficient number of sub chambers. At every sub-chamber, the energy and mass balance equations are solved for both liquid and gas phases, similar to a two-fluid model approach. The modeling procedure applies a lumped parameter approach, which requires the calculation of a set of parameters to provide a closure for the mass and energy balance of the expander under different operating conditions. The necessary set of parameters for the two-phase expansion in twin-screw expanders has been identified based on available experimental data. The values of the parameters have been calculated by solving a properly defined optimization problem. The results from the simulations indicate that the developed model can predict with satisfying accuracy the two-phase expansion along the expansion chamber.

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Citation

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MLA
Skiadopoulos, Anastasios, et al. “Thermodynamic Low-Order Model for the Simulation of Two-Phase Expansion within a TFC Unit.” Proceedings of the 6th International Seminar on ORC Power Systems, edited by Christoph Wieland et al., Technical University of Munich, 2021.
APA
Skiadopoulos, A., van Heule, X., Kosmadakis, G., Manolakos, D., De Paepe, M., & Lecompte, S. (2021). Thermodynamic low-order model for the simulation of two-phase expansion within a TFC unit. In C. Wieland, S. Karellas, S. Quoilin, C. Schifflechner, F. Dawo, & H. Spliethoff (Eds.), Proceedings of the 6th International Seminar on ORC Power Systems. virtual: Technical University of Munich.
Chicago author-date
Skiadopoulos, Anastasios, Xander van Heule, George Kosmadakis, Dimitrios Manolakos, Michel De Paepe, and Steven Lecompte. 2021. “Thermodynamic Low-Order Model for the Simulation of Two-Phase Expansion within a TFC Unit.” In Proceedings of the 6th International Seminar on ORC Power Systems, edited by Christoph Wieland, Sotirios Karellas, Sylvain Quoilin, Christopher Schifflechner, Fabian Dawo, and Hartmut Spliethoff. Technical University of Munich.
Chicago author-date (all authors)
Skiadopoulos, Anastasios, Xander van Heule, George Kosmadakis, Dimitrios Manolakos, Michel De Paepe, and Steven Lecompte. 2021. “Thermodynamic Low-Order Model for the Simulation of Two-Phase Expansion within a TFC Unit.” In Proceedings of the 6th International Seminar on ORC Power Systems, ed by. Christoph Wieland, Sotirios Karellas, Sylvain Quoilin, Christopher Schifflechner, Fabian Dawo, and Hartmut Spliethoff. Technical University of Munich.
Vancouver
1.
Skiadopoulos A, van Heule X, Kosmadakis G, Manolakos D, De Paepe M, Lecompte S. Thermodynamic low-order model for the simulation of two-phase expansion within a TFC unit. In: Wieland C, Karellas S, Quoilin S, Schifflechner C, Dawo F, Spliethoff H, editors. Proceedings of the 6th International Seminar on ORC Power Systems. Technical University of Munich; 2021.
IEEE
[1]
A. Skiadopoulos, X. van Heule, G. Kosmadakis, D. Manolakos, M. De Paepe, and S. Lecompte, “Thermodynamic low-order model for the simulation of two-phase expansion within a TFC unit,” in Proceedings of the 6th International Seminar on ORC Power Systems, virtual, 2021.
@inproceedings{8725815,
  abstract     = {{Numerical modeling of the two-phase expansion phenomenon may provide valuable tools for the evaluation of the efficiency of a Trilateral Flash Cycle (TFC) unit, as well as in the sizing and design optimization process of two-phase expanders. In the present work, a low-order thermodynamic model for the simulation of two-phase expansion in twin-screw expanders has been developed. The model simulates the phase change in the expansion chamber by discretizing it in a sufficient number of sub chambers. At every sub-chamber, the energy and mass balance equations are solved for both liquid and gas phases, similar to a two-fluid model approach. The modeling procedure applies a lumped parameter approach, which requires the calculation of a set of parameters to provide a closure for the mass and energy balance of the expander under different operating conditions. The necessary set of parameters for the two-phase expansion in twin-screw expanders has been identified based on available experimental data. The values of the parameters have been calculated by solving a properly defined optimization problem. The results from the simulations indicate that the developed model can predict with satisfying accuracy the two-phase expansion along the expansion chamber.}},
  articleno    = {{29}},
  author       = {{Skiadopoulos, Anastasios and van Heule, Xander and Kosmadakis, George and Manolakos, Dimitrios and De Paepe, Michel and Lecompte, Steven}},
  booktitle    = {{Proceedings of the 6th International Seminar on ORC Power Systems}},
  editor       = {{Wieland, Christoph and Karellas, Sotirios and Quoilin, Sylvain and Schifflechner, Christopher and Dawo, Fabian and Spliethoff, Hartmut}},
  isbn         = {{9783000706868}},
  issn         = {{2709-7609}},
  language     = {{eng}},
  location     = {{virtual}},
  pages        = {{10}},
  publisher    = {{Technical University of Munich}},
  title        = {{Thermodynamic low-order model for the simulation of two-phase expansion within a TFC unit}},
  url          = {{https://mediatum.ub.tum.de/1632642?show_id=1632940&liststyle=list}},
  year         = {{2021}},
}