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Techno-thermodynamic multi-objective optimization of organic rankine cycles for waste heat recovery

Steven Lecompte (UGent) , Martijn van den Broek (UGent) and Michel De Paepe (UGent)
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Abstract
Organic Rankine cycles (ORC) are considered a mature technology in waste heat recovery applications. Yet, many of the commercially available implementations have comparable design characteristics. They operate under subcritical regime and only few working fluids are considered. In this work, three ORC configurations are analyzed on thermodynamic and technical grounds. The cycles under consideration are the subcritical cycle (SCORC), the transcritical cycle (TCORC) and the partial evaporation cycle (PEORC). Technical design constraints on the expander generally limit the cycles which can be considered feasible. Yet, their impact on the optimization process is not clear. Therefore, in this work, the technical performance criteria are optimized in conjunction with maximization of the net power output. Thus the investigation results in a multi-objective optimization strategy. The proposed strategy is performed on two representative but distinctive waste heat recovery cases. The results of the investigation are particularly useful for manufacturers of ORCs. The thermodynamic performance of the cycles is compared under equal boundary conditions, expander criteria are taken into account, actual cases are used and a ranking is created.
Keywords
thermodynamics, ORC, expanders, organic Rankine cycle, optimization

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MLA
Lecompte, Steven, et al. “Techno-Thermodynamic Multi-Objective Optimization of Organic Rankine Cycles for Waste Heat Recovery.” 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings, 2015.
APA
Lecompte, S., van den Broek, M., & De Paepe, M. (2015). Techno-thermodynamic multi-objective optimization of organic rankine cycles for waste heat recovery. 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings. Presented at the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Skukuza, South-Africa.
Chicago author-date
Lecompte, Steven, Martijn van den Broek, and Michel De Paepe. 2015. “Techno-Thermodynamic Multi-Objective Optimization of Organic Rankine Cycles for Waste Heat Recovery.” In 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings.
Chicago author-date (all authors)
Lecompte, Steven, Martijn van den Broek, and Michel De Paepe. 2015. “Techno-Thermodynamic Multi-Objective Optimization of Organic Rankine Cycles for Waste Heat Recovery.” In 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings.
Vancouver
1.
Lecompte S, van den Broek M, De Paepe M. Techno-thermodynamic multi-objective optimization of organic rankine cycles for waste heat recovery. In: 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings. 2015.
IEEE
[1]
S. Lecompte, M. van den Broek, and M. De Paepe, “Techno-thermodynamic multi-objective optimization of organic rankine cycles for waste heat recovery,” in 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings, Skukuza, South-Africa, 2015.
@inproceedings{6887784,
  abstract     = {{Organic Rankine cycles (ORC) are considered a mature technology in waste heat recovery applications. Yet, many of the commercially available implementations have comparable design characteristics. They operate under subcritical regime and only few working fluids are considered. In this work, three ORC configurations are analyzed on thermodynamic and technical grounds. The cycles under consideration are the subcritical cycle (SCORC), the transcritical cycle (TCORC) and the partial evaporation cycle (PEORC). Technical design constraints on the expander generally limit the cycles which can be considered feasible. Yet, their impact on the optimization process is not clear. Therefore, in this work, the technical performance criteria are optimized in conjunction with maximization of the net power output. Thus the investigation results in a multi-objective optimization strategy. The proposed strategy is performed on two representative but distinctive waste heat recovery cases. The results of the investigation are particularly useful for manufacturers of ORCs. The thermodynamic performance of the cycles is compared under equal boundary conditions, expander criteria are taken into account, actual cases are used and a ranking is created.}},
  author       = {{Lecompte, Steven and van den Broek, Martijn and De Paepe, Michel}},
  booktitle    = {{11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Proceedings}},
  isbn         = {{978-1-77592-108-0}},
  keywords     = {{thermodynamics,ORC,expanders,organic Rankine cycle,optimization}},
  language     = {{eng}},
  location     = {{Skukuza, South-Africa}},
  pages        = {{6}},
  title        = {{Techno-thermodynamic multi-objective optimization of organic rankine cycles for waste heat recovery}},
  year         = {{2015}},
}