Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method
Printed-circuit heat exchangers (PCHEs) are compact exchangers with exceptional heat-transfer properties that are important for supercritical CO<sub>2</sub> technology. Recalculating the heat transfer under off-design conditions is a common task. Thus, in this paper, traditional and PCHE...
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2025-07-01
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| author | Viktoria Carmen Illyés Francesco Crespi Xavier Guerif Andreas Werner |
| author_facet | Viktoria Carmen Illyés Francesco Crespi Xavier Guerif Andreas Werner |
| author_sort | Viktoria Carmen Illyés |
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| description | Printed-circuit heat exchangers (PCHEs) are compact exchangers with exceptional heat-transfer properties that are important for supercritical CO<sub>2</sub> technology. Recalculating the heat transfer under off-design conditions is a common task. Thus, in this paper, traditional and PCHE-specific correlations are analyzed in a conventional, discretized one-dimensional model using the conductance ratio method. The predicted heat transfer is compared with the experimental data of a CO<sub>2</sub>–CO<sub>2</sub> heat exchanger with zigzag-type channels and one with s-shaped fin channels under various working conditions. The results demonstrate that all selected heat-transfer correlations predicted the transferred heat within +/−20% using the conventional model. The much simpler conductance ratio method yields better results, with heat transfer within +/−10%, even with conservative inputs to the model. |
| format | Article |
| id | doaj-art-72d02c50e4a84e60b5e34e6ed908d7ec |
| institution | Matheson Library |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-72d02c50e4a84e60b5e34e6ed908d7ec2025-07-11T14:39:24ZengMDPI AGEnergies1996-10732025-07-011813354710.3390/en18133547Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio MethodViktoria Carmen Illyés0Francesco Crespi1Xavier Guerif2Andreas Werner3Institute for Energy Systems and Thermodynamics, Technische Universität Wien, Getreidemarkt 9, 1060 Wien, AustriaDepartment of Energy Engineering, University of Seville, Camino de los descubrimientos s/n, 41092 Seville, SpainKelvion Thermal Solutions, 25 Rue du Ranzay, 44300 Nantes, FranceInstitute for Energy Systems and Thermodynamics, Technische Universität Wien, Getreidemarkt 9, 1060 Wien, AustriaPrinted-circuit heat exchangers (PCHEs) are compact exchangers with exceptional heat-transfer properties that are important for supercritical CO<sub>2</sub> technology. Recalculating the heat transfer under off-design conditions is a common task. Thus, in this paper, traditional and PCHE-specific correlations are analyzed in a conventional, discretized one-dimensional model using the conductance ratio method. The predicted heat transfer is compared with the experimental data of a CO<sub>2</sub>–CO<sub>2</sub> heat exchanger with zigzag-type channels and one with s-shaped fin channels under various working conditions. The results demonstrate that all selected heat-transfer correlations predicted the transferred heat within +/−20% using the conventional model. The much simpler conductance ratio method yields better results, with heat transfer within +/−10%, even with conservative inputs to the model.https://www.mdpi.com/1996-1073/18/13/3547printed-circuit heat exchangerzigzag channelss-shaped fin channelsheat transferheat exchanger |
| spellingShingle | Viktoria Carmen Illyés Francesco Crespi Xavier Guerif Andreas Werner Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method Energies printed-circuit heat exchanger zigzag channels s-shaped fin channels heat transfer heat exchanger |
| title | Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method |
| title_full | Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method |
| title_fullStr | Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method |
| title_full_unstemmed | Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method |
| title_short | Validation of PCHE-Type CO<sub>2</sub>–CO<sub>2</sub> Recuperative Heat Exchanger Modeling Using Conductance Ratio Method |
| title_sort | validation of pche type co sub 2 sub co sub 2 sub recuperative heat exchanger modeling using conductance ratio method |
| topic | printed-circuit heat exchanger zigzag channels s-shaped fin channels heat transfer heat exchanger |
| url | https://www.mdpi.com/1996-1073/18/13/3547 |
| work_keys_str_mv | AT viktoriacarmenillyes validationofpchetypecosub2subcosub2subrecuperativeheatexchangermodelingusingconductanceratiomethod AT francescocrespi validationofpchetypecosub2subcosub2subrecuperativeheatexchangermodelingusingconductanceratiomethod AT xavierguerif validationofpchetypecosub2subcosub2subrecuperativeheatexchangermodelingusingconductanceratiomethod AT andreaswerner validationofpchetypecosub2subcosub2subrecuperativeheatexchangermodelingusingconductanceratiomethod |