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Evaluation and optimization of the annual performance of a novel tri-generation system driven by geothermal brine in off-design conditions

Titelangaben

Akbari Kordlar, Mehri ; Heberle, Florian ; Brüggemann, Dieter:
Evaluation and optimization of the annual performance of a novel tri-generation system driven by geothermal brine in off-design conditions.
In: Applied Sciences. Bd. 10 (2020) Heft 18 . - 6532.
ISSN 2076-3417
DOI: https://doi.org/10.3390/app10186532

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Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projekttitel:
Offizieller Projekttitel
Projekt-ID
Geothermie-Allianz Bayern
Ohne Angabe
Open Access Publizieren
Ohne Angabe

Projektfinanzierung: Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst

Abstract

The difference in heating or cooling to power ratio between required demands for district networks and the proposed tri-generation system is the most challenging issue of the system configuration and design. In this work, an adjustable, novel tri-generation system driven by geothermal resources is proposed to supply the thermal energies of a specific district network depending on ambient temperature in Germany. The tri-generation system is a combination of a modified absorption refrigeration cycle and a Kalina cycle using NH3-H2O mixture as a working fluid for the whole tri-generation system. A sensitive analysis of off-design conditions is carried out to study the effect of operational parameters on the system performances prior to optimizing its performance. The simulation show that the system is able to cover required heating and cooling demands. The optimization is applied considering the maximum exergy efficiency (scenario 1) and minimum total exergy destruction rate (scenario 2). The optimization results show that the maximum mean exergy efficiency in scenario 1 is achieved as 44.67% at the expense of 14.52% increase in the total exergy destruction rate in scenario 2. The minimum mean total exergy destruction rate in scenario 2 is calculated as 2980 kW at the expense of 8.32% decrease in the exergy efficiency in scenario 1.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: tri-generation; off-design analysis; ammonia-water solution; geothermal; flexible demand production; optimization
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse > Lehrstuhl Technische Thermodynamik und Transportprozesse - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
Profilfelder > Emerging Fields > Energieforschung und Energietechnologie
Forschungseinrichtungen > Forschungsstellen > Zentrum für Energietechnik - ZET
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Profilfelder
Profilfelder > Emerging Fields
Forschungseinrichtungen
Forschungseinrichtungen > Forschungsstellen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 22 Sep 2020 06:21
Letzte Änderung: 14 Jul 2023 10:08
URI: https://eref.uni-bayreuth.de/id/eprint/57352