Towards optimal mixtures of working fluids: Integrated design of processes and mixtures for Organic Rankine Cycles

Schilling, Johannes; Entrup, Marten; Hopp, Madlen; Groß, Joachim; Bardow, André

doi:10.1016/j.rser.2020.110179

Cited by 28 publications

(5 citation statements)

References 97 publications

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“…67 A further direction in the integrated design of ORCs or heat pumps is the consideration of mixed working fluids or refrifgerants. 32,68 Mixtures also play a crucial part in separation processes for which solvent design is also considered to increase the process performance. 69 Heterosegmented group contribution models describe interactions between segments rather than entire molecules.…”

Section: Code Availabilitymentioning

confidence: 99%

Molecule superstructures for computer-aided molecular and process design

Rehner

Schilling

Bardow

2023

Mol. Syst. Des. Eng.

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Section: Code Availabilitymentioning

confidence: 99%

Molecule superstructures for computer-aided molecular and process design

Rehner

Schilling

Bardow

2023

Mol. Syst. Des. Eng.

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“…Furthermore, The PC‐SAFT model parameters all have a sound physical meaning which allows to set reasonable bounds on these parameters during optimization and to interpret results of a CoMT‐CAMD optimization in terms of properties of the optimal fluid. PC‐SAFT and the QSPR model for

c_{p}^{ig}

have successfully been applied in many CoMT‐CAMD studies to determine optimal working fluids, e.g., for organic Rankine cycles 9, 12, 13, 25–32 or CO 2 capture 33.…”

Section: Comt‐camd For Optimal Working Fluid Selectionmentioning

confidence: 99%

A Multi‐Criteria Study of Optimal Working Fluids for High Temperature Heat Pumps

Mairhofer

Stavrou

2022

Chemie Ingenieur Technik

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A bi-objective optimization with respect to coefficient of performance (COP) and volumetric heating capacity (VHC) is performed for a high temperature heat pump. For fixed temperature levels of the heat source and sink, the values for temperature in the evaporator and condenser as well as the degree of vapor super-heating and condensate sub-cooling are optimized. Constraints are placed on the minimal pressure in the evaporator, the maximal pressure in the condenser and the compressor discharge temperature. Results are presented for a one-stage and a two-stage heat pump cycle. Cyclobutane and several butene isomers are identified as working fluids with a good compromise between COP and VHC from a CoMT-CAMD approach based on PC-SAFT and a realistic model for the ideal gas heat capacity.

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“…The solution of the optimization problem requires an MINLP. The one-stage approach solves the fully integrated optimization problem and has recently been extended to cover problems for optimal process, mixture, and equipment design [13].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Optimization of Process Design and Solvent in a Flowsheet Simulator

Stavrou

Hoeller

Seidel

et al. 2022

Chemie Ingenieur Technik

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For processes using auxiliaries, the selection of the process fluid should not be separated from the process design. To solve the simultaneous process and fluid optimization problem for industrial applications, a flowsheet simulator is required. The implementation of the two-stage CoMT-CAMD approach in CHEMASIM, the in-house flowsheet simulator of BASF SE, allows for large process topologies with a large variety of unit operation models to be modeled, while sustainability criteria like cost and life cycle assessment (LCA) objectives, are directly accessible and can be solved with single or multicriteria optimization methods. The modifications required for the implementation and the user interface designed for this purpose are presented here.

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Towards optimal mixtures of working fluids: Integrated design of processes and mixtures for Organic Rankine Cycles

Cited by 28 publications

References 97 publications

Molecule superstructures for computer-aided molecular and process design

Molecule superstructures for computer-aided molecular and process design

A Multi‐Criteria Study of Optimal Working Fluids for High Temperature Heat Pumps

Simultaneous Optimization of Process Design and Solvent in a Flowsheet Simulator

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