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https://doi.org/10.21256/zhaw-20408| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Exergy performance and optimization potential of refrigeration plants in free cooling operation |
| Autor/-in: | Brenner, Lorenz Tillenkamp, Frank Ghiaus, Christian |
| et. al: | No |
| DOI: | 10.1016/j.energy.2020.118464 10.21256/zhaw-20408 |
| Erschienen in: | Energy |
| Band(Heft): | 209 |
| Heft: | 118464 |
| Erscheinungsdatum: | 1-Aug-2020 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 0360-5442 |
| Sprache: | Englisch |
| Schlagwörter: | Optimization potential assessment method; Exergy analysis; Refrigeration plants; Free cooling; Optimization potential index; OPI |
| Fachgebiet (DDC): | 621.04: Energietechnik |
| Zusammenfassung: | Exergy analysis has been widely used to assess refrigeration systems by evaluating exergy losses or exergy efficiency. The latter is mostly used as an indicator to determine the system performance, which requires the comparison of the actual system with its idealized reversible version, but not the practical achievable efficiency. Therefore, a practice-oriented evaluation method for refrigeration plants in free cooling operation is proposed, based on exergy analysis and technical standards as baseline. By considering the exergy input of auxiliary devices, the overall design of hydraulic circuits can be assessed on subsystem level. The achievable optimization potential compared to the state of the art in technology and the performance is revealed with the introduced optimization potential index (OPI). The application is demonstrated on a case study, where the analysis reveals an adequate operation of the field plant in general. Most cooling locations show potential for improvement, which is indicated by an OPI superior to zero. Moreover, the auxiliary electrical exergy input shows the same magnitude as the thermal exergy input, which emphasizes the importance of reducing the electrical energy usage of auxiliary devices in refrigeration plants to increase the performance. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/20408 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY 4.0: Namensnennung 4.0 International |
| Departement: | School of Engineering |
| Organisationseinheit: | Institut für Energiesysteme und Fluid-Engineering (IEFE) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2020_Brenner-Tillenkamp-Ghiaus_Exergy-performance_Energy.pdf | 2.08 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Brenner, L., Tillenkamp, F., & Ghiaus, C. (2020). Exergy performance and optimization potential of refrigeration plants in free cooling operation. Energy, 209(118464). https://doi.org/10.1016/j.energy.2020.118464
Brenner, L., Tillenkamp, F. and Ghiaus, C. (2020) ‘Exergy performance and optimization potential of refrigeration plants in free cooling operation’, Energy, 209(118464). Available at: https://doi.org/10.1016/j.energy.2020.118464.
L. Brenner, F. Tillenkamp, and C. Ghiaus, “Exergy performance and optimization potential of refrigeration plants in free cooling operation,” Energy, vol. 209, no. 118464, Aug. 2020, doi: 10.1016/j.energy.2020.118464.
BRENNER, Lorenz, Frank TILLENKAMP und Christian GHIAUS, 2020. Exergy performance and optimization potential of refrigeration plants in free cooling operation. Energy. 1 August 2020. Bd. 209, Nr. 118464. DOI 10.1016/j.energy.2020.118464
Brenner, Lorenz, Frank Tillenkamp, and Christian Ghiaus. 2020. “Exergy Performance and Optimization Potential of Refrigeration Plants in Free Cooling Operation.” Energy 209 (118464). https://doi.org/10.1016/j.energy.2020.118464.
Brenner, Lorenz, et al. “Exergy Performance and Optimization Potential of Refrigeration Plants in Free Cooling Operation.” Energy, vol. 209, no. 118464, Aug. 2020, https://doi.org/10.1016/j.energy.2020.118464.
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