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Topcycle: A novel high performance and fuel flexible gas turbine cycle

Dybe, S. and Bartlett, M. and Pålsson, J. and Stathopoulos, P. (2021) Topcycle: A novel high performance and fuel flexible gas turbine cycle. Sustainability. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/su13020651. ISSN 2071-1050.

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Official URL: https://www.mdpi.com/2071-1050/13/2/651


High pressure humidified cycles can combine high operational flexibility and high thermal efficiency. The current work introduces such a cycle, namely TopCycle, which provides the necessary combustion infrastructure to operate on a wide fuel variety in a steam-rich atmosphere. The cycle configuration is presented in detail, and its operation is exemplified on the basis of simulation results. Operation at design condition results in electric efficiencies higher than 50% (lower heating value (LHV)) and power densities higher than 2100 kW/kgair (referred to intake air flow). A sensitivity analysis identifies the cycle performance as a function of representative parameters, which provide the basis for future operation and design improvements. As for any gas turbine cycle, TopCycle’s electric efficiency can be effectively improved by increasing the turbine inlet temperature, optimizing the economizer heat recovery, as well as elevating the working pressure. Finally, TopCycle’s performance is compared to a state-of-the-art combined cycle (CC) at equivalent operation parameters. The TopCycle operates at an elevated electric efficiency and considerably higher power density, which can be transferred into smaller plant footprint and dimensions and thus lower investment costs at equal power output in comparison to a CC

Item URL in elib:https://elib.dlr.de/147769/
Document Type:Article
Title:Topcycle: A novel high performance and fuel flexible gas turbine cycle
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Dybe, S.Chair of Fluid Dynamics, Technische Universitat BerlinUNSPECIFIEDUNSPECIFIED
Bartlett, M.Phoenix BioPower, Sweden, StockholmUNSPECIFIEDUNSPECIFIED
Pålsson, J.Phoenix BioPower, Sweden, StockholmUNSPECIFIEDUNSPECIFIED
Stathopoulos, P.Chair of Fluid Dynamics, Technische Universitat BerlinUNSPECIFIEDUNSPECIFIED
Date:13 January 2021
Journal or Publication Title:Sustainability
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:TopCycle; wet cycle; Phoenix BioPower; cycle analysis; power and heat generation; BTC cycle
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Digitalization and System Technology
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Energy System Technology, E - Gas Turbine
Location: Cottbus
Institutes and Institutions:Institute of Low-Carbon Industrial Processes
Deposited By: Stathopoulos, Panagiotis
Deposited On:17 Dec 2021 17:02
Last Modified:05 Dec 2023 09:31

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