Cristin-resultat-ID: 1758163
Sist endret: 22. oktober 2020, 16:04
NVI-rapporteringsår: 2019
Resultat
Vitenskapelig artikkel
2020

Concept of hydrogen fired gas turbine cycle with exhaust gas recirculation: Assessment of process performance

Bidragsytere:
  • Mario Ditaranto
  • Tarjei Heggset og
  • David Olsson Berstad

Tidsskrift

Energy
ISSN 0360-5442
e-ISSN 1873-6785
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2019
Trykket: 2020
Volum: 192
Artikkelnummer: 116646
Open Access

Importkilder

Scopus-ID: 2-s2.0-85076038179

Beskrivelse Beskrivelse

Tittel

Concept of hydrogen fired gas turbine cycle with exhaust gas recirculation: Assessment of process performance

Sammendrag

High hydrogen content fuels can be used in gas turbine for power generation with CO2 capture, IGCC plants or with hydrogen from renewables. The challenge for the engine is the high reactive combustion properties making dilution necessary to mitigate NOx emissions at the expense of a significant energy cost. In the concept analysed in this study, high Exhaust Gas Recirculation (EGR) rate is applied to the gas turbine to generate oxygen depleted air. As a result combustion temperature is inherently limited, keeping NOx emissions low without the need for dilution or unsafe premixing. The concept is analysed by process simulation based on a reference IGCC plant with CO2 Capture. Results with dry and wet EGR options are presented as a function EGR rate. Efficiency performance is assessed against the reference power cycle with nitrogen dilution. All EGR options are shown to represent an efficiency improvement. Nitrogen dilution is found to have a 1.3% efficiency cost. Although all EGR options investigated offer an improvement, dry EGR is considered as the preferred option despite the need for higher EGR rate as compared with the wet EGR. The efficiency gain is calculated to be of 1% compared with the reference case.

Bidragsytere

Mario Ditaranto

  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS

Tarjei Heggset

  • Tilknyttet:
    Forfatter
    ved Termisk energi ved SINTEF Energi AS

David Olsson Berstad

  • Tilknyttet:
    Forfatter
    ved Gassteknologi ved SINTEF Energi AS
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