Steady-state and transient compressor surge behavior within a SOFC-GT-hybrid system

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Future pressurized Solid Oxide Fuel Cell- (SOFC) Gas Turbine Hybrid Systems (HS) promise high efficiency at both full-and part-load on account of the upper and lower SOFC temperature limit and the compressor surge line [1]. The compressor surge constraint is also evident in transient HS operation, caused by the slow transients of SOFC temperature imposed by large SOFC plenum, and fast turbo-machinery transients. This paper presents steady-state and unsteady-state HS modeling and calculation results with regard to surge. The transient compressor and SOFC models have been validated against literature. Calculation results of the coupled SOFC-GT-HS reveal a small operational window in case of unmatched turbine and the critical transient characteristics for HS shut-down.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering

Keywords

  • Blade cracking, Gas turbine hybrid systems (HS), Compressor surge line, Part-load modeling
Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2004
PublisherAmerican Society Of Mechanical Engineers (ASME)
Pages541-550
Volume7
Publication statusPublished - 2004
Publication categoryResearch
Peer-reviewedYes
Event2004 ASME Turbo Expo - Vienna, Austria
Duration: 2004 Jun 142004 Jun 17

Publication series

Name
Volume7

Conference

Conference2004 ASME Turbo Expo
CountryAustria
CityVienna
Period2004/06/142004/06/17