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Parameterization of high solar share gas turbine systems

Heide, Stephan and Felsmann, Christian and Gampe, Uwe and Boje, Sven and Gericke, Bernd and Freimark, Manfred and Langnickel, Ulrich and Buck, Reiner and Giuliano, Stefano (2012) Parameterization of high solar share gas turbine systems. In: referiert. ASME Turbo Expo 2012, 11.-15. Juni 2012, Copenhagen, Dänemark.

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Existing solar thermal power plants are based on steam turbine cycles. While their process temperature is limited, solar gas turbine (GT) systems provide the opportunity to utilize solar heat at a much higher temperature. Therefore there is potential to improve the efficiency of future solar thermal power plants. Solar based heat input to substitute fuel requires specific GT features. Currently the portfolio of available GTs with these features is restricted. Only small capacity research plants are in service or in planning. Process layout and technology studies for high solar share GT systems have been carried out and have already been reported by the authors. While these investigations are based on a commercial 10MW class GT, this paper addresses the parameterization of high solar share GT systems and is not restricted to any type of commercial GT. Three configurations of solar hybrid GT cycles are analyzed. Besides recuperated and simple GT with bottoming Organic Rankine Cycle (ORC), a conventional combined cycle is considered. The study addresses the GT parameterization. Therefore parametric process models are used for simulation. Maximum electrical efficiency and associated optimum compressor pressure ratio πC are derived at design conditions. The pressure losses of the additional solar components of solar hybrid GTs have a different adversely effect on the investigated systems. Further aspects like high ambient temperature, availability of water and influence of compressor pressure level on component design are discussed as well. The present study is part of the R&D project Hybrid High Solar Share Gas Turbine Systems (HYGATE) which is funded by the German Ministry for the Environment, Nature and Nuclear Safety and the Ministry of Economics and Technology.

Item URL in elib:https://elib.dlr.de/80694/
Document Type:Conference or Workshop Item (Paper)
Title:Parameterization of high solar share gas turbine systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Heide, StephanUniversität DresdenUNSPECIFIED
Felsmann, ChristianUniversität DresdenUNSPECIFIED
Gampe, UweUniversität DresdenUNSPECIFIED
Freimark, ManfredVGB PowerTech e. V.UNSPECIFIED
Langnickel, UlrichVGB PowerTech e. V.UNSPECIFIED
Buck, ReinerDLR - Institut für Solarforschung StuttgartUNSPECIFIED
Giuliano, StefanoDLR - Institut für Solarforschung StuttgartUNSPECIFIED
Journal or Publication Title:referiert
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Solar gas turbine, solar tower plant, solar-hybrid, concentrated solar power
Event Title:ASME Turbo Expo 2012
Event Location:Copenhagen, Dänemark
Event Type:international Conference
Event Dates:11.-15. Juni 2012
Organizer:ASME Turbo Expo 2012
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Punktfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Uhlig, Tamara
Deposited On:22 Jan 2013 11:18
Last Modified:12 Dec 2013 21:58

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