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Modelling of two-phase expansion in a reciprocating expander

Xander van Heule (UGent) , Anastasios Skiadopoulos, Dimitris Manolakos, Michel De Paepe (UGent) and Steven Lecompte (UGent)
(2023) APPLIED THERMAL ENGINEERING. 218.
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Abstract
Two-phase expansion devices can be applied in a multitude of cycles which allow for an increase of the overall system efficiency in currently used heat and power cycles. The expanders that are mainly investigated for the purpose of two-phase expansion are the Lysholm and the reciprocating expanders. From these two, the reciprocating expander is challenging to model as there is a need to describe the non-equilibrium state of the phases during the expansion process. This study aims to fill the knowledge gap that exists for two-phase reciprocating expanders, by constructing a predictive model to describe the expansion process and the non -equilibrium phenomena occurring. The simulation framework makes use of a modified homogeneous relaxation model to describe the thermal non-equilibrium between the phases within the isolated working chamber. The model results are verified and compared to experimental data in literature with water as working fluid. Subsequently, Cyclopentane is selected as a more suitable candidate and a thorough analysis is presented. The simulation results predict a 15% lower work and a 10% higher mass intake per stroke of the expander compared to equilibrium working conditions.
Keywords
Industrial and Manufacturing Engineering, Energy Engineering and Power Technology

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MLA
van Heule, Xander, et al. “Modelling of Two-Phase Expansion in a Reciprocating Expander.” APPLIED THERMAL ENGINEERING, vol. 218, 2023, doi:10.1016/j.applthermaleng.2022.119224.
APA
van Heule, X., Skiadopoulos, A., Manolakos, D., De Paepe, M., & Lecompte, S. (2023). Modelling of two-phase expansion in a reciprocating expander. APPLIED THERMAL ENGINEERING, 218. https://doi.org/10.1016/j.applthermaleng.2022.119224
Chicago author-date
Heule, Xander van, Anastasios Skiadopoulos, Dimitris Manolakos, Michel De Paepe, and Steven Lecompte. 2023. “Modelling of Two-Phase Expansion in a Reciprocating Expander.” APPLIED THERMAL ENGINEERING 218. https://doi.org/10.1016/j.applthermaleng.2022.119224.
Chicago author-date (all authors)
van Heule, Xander, Anastasios Skiadopoulos, Dimitris Manolakos, Michel De Paepe, and Steven Lecompte. 2023. “Modelling of Two-Phase Expansion in a Reciprocating Expander.” APPLIED THERMAL ENGINEERING 218. doi:10.1016/j.applthermaleng.2022.119224.
Vancouver
1.
van Heule X, Skiadopoulos A, Manolakos D, De Paepe M, Lecompte S. Modelling of two-phase expansion in a reciprocating expander. APPLIED THERMAL ENGINEERING. 2023;218.
IEEE
[1]
X. van Heule, A. Skiadopoulos, D. Manolakos, M. De Paepe, and S. Lecompte, “Modelling of two-phase expansion in a reciprocating expander,” APPLIED THERMAL ENGINEERING, vol. 218, 2023.
@article{8766718,
  abstract     = {{Two-phase expansion devices can be applied in a multitude of cycles which allow for an increase of the overall system efficiency in currently used heat and power cycles. The expanders that are mainly investigated for the purpose of two-phase expansion are the Lysholm and the reciprocating expanders. From these two, the reciprocating expander is challenging to model as there is a need to describe the non-equilibrium state of the phases during the expansion process. This study aims to fill the knowledge gap that exists for two-phase reciprocating expanders, by constructing a predictive model to describe the expansion process and the non -equilibrium phenomena occurring. The simulation framework makes use of a modified homogeneous relaxation model to describe the thermal non-equilibrium between the phases within the isolated working chamber. The model results are verified and compared to experimental data in literature with water as working fluid. Subsequently, Cyclopentane is selected as a more suitable candidate and a thorough analysis is presented. The simulation results predict a 15% lower work and a 10% higher mass intake per stroke of the expander compared to equilibrium working conditions.}},
  articleno    = {{119224}},
  author       = {{van Heule, Xander and Skiadopoulos, Anastasios and Manolakos, Dimitris and De Paepe, Michel and Lecompte, Steven}},
  issn         = {{1359-4311}},
  journal      = {{APPLIED THERMAL ENGINEERING}},
  keywords     = {{Industrial and Manufacturing Engineering,Energy Engineering and Power Technology}},
  language     = {{eng}},
  pages        = {{10}},
  title        = {{Modelling of two-phase expansion in a reciprocating expander}},
  url          = {{http://doi.org/10.1016/j.applthermaleng.2022.119224}},
  volume       = {{218}},
  year         = {{2023}},
}
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