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Advanced Organic Rankine Cycle for geothermal application

Title data

Preißinger, Markus ; Heberle, Florian ; Brüggemann, Dieter:
Advanced Organic Rankine Cycle for geothermal application.
In: International Journal of Low-Carbon Technologies. Vol. 8 (July 2013) Issue Suppl. 1 . - i62-i68.
ISSN 1748-1325
DOI: https://doi.org/10.1093/ijlct/ctt021

Abstract in another language

Exploitation of geothermal sources based on advanced Organic Rankine Cycle (ORC) is studied with respect to energetic, plant-specific and economic aspects. Three natural and five synthetic refrigerants are investigated as pure fluids within a sub- and transcritical ORC. Furthermore, a zeotropic mixture of R227ea/R245fa is analysed under subcritical conditions. It is shown that transcritical ORC is a promising way to optimize geothermal power plants. The gross power can be increased by >15% compared with standard subcritical processes. Economic analysis indicates that transcritical ORC as well as zeotropic mixtures lead to significantly lower payback periods and, even when taking into account higher specific investment costs and higher mean cash flow.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: Special issue : Heat Powered Cycles Conference 2012
Keywords: organic Rankine cycle; transcritical; fluid mixtures; geothermal; economic evaluation
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
Profile Fields
Profile Fields > Emerging Fields
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 27 Nov 2015 08:08
Last Modified: 28 Feb 2019 09:39
URI: https://eref.uni-bayreuth.de/id/eprint/23026