Thermo-economic evaluation of novel flexible caes/ccpp concept

Stephan Herrmann, Steffen Kahlert, Manuel Wuerth, Hartmut Spliethoff

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

This paper presents the results of a thermodynamic and economic evaluation of a novel hybrid combination of a compressed air energy storage and a combined cycle power plant. The new cycle is modeled on basis of a GE LM6000 gas turbine model, an adiabatic compressor model, an air expander and a conventional dual pressure HRSG configuration. Furthermore, a detailed design of the recuperator is presented. With the simulated components, a storage efficiency of 60% is reached. In CHP configuration the total efficiency of the plant reaches up to 86.2%. The thermodynamic and economic performance is compared to a conventional LM6000 combined cycle. For the economic evaluation the German electricity dayahead prices and average gas price of the year 2014 are used. Overall it is found that the CAES/CCPP concept exhibits far more operation hours per year and a higher profit margin than the compared CCPP. Taking into account the investment and operational costs, especially with steam extraction the net present value of the novel cycle is higher than that of the combined cycle, despite the challenging market environment for storage technologies in Germany.

OriginalspracheEnglisch
TitelCoal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems
Herausgeber (Verlag)American Society of Mechanical Engineers (ASME)
ISBN (elektronisch)9780791849743
DOIs
PublikationsstatusVeröffentlicht - 2016
VeranstaltungASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016 - Seoul, Südkorea
Dauer: 13 Juni 201617 Juni 2016

Publikationsreihe

NameProceedings of the ASME Turbo Expo
Band3

Konferenz

KonferenzASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016
Land/GebietSüdkorea
OrtSeoul
Zeitraum13/06/1617/06/16

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