Preliminary communication

https://doi.org/10.31803/tg-20200629122146

Comparison of Power Distribution, Losses and Efficiencies of a Steam Turbine with and without Extractions

Vedran Mrzljak orcid.org/0000-0003-0323-2600 ; Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Sandi Baressi Šegota orcid.org/0000-0002-3015-1024 ; Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia
Hrvoje Meštrić ; Catholic University of Croatia, University of Zagreb, Ilica 242, 10000 Zagreb, Croatia
Zlatan Car orcid.org/0000-0003-2817-9252 ; Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia

Abstract

The paper presents an analysis of two steam turbine operation regimes - regime with all steam extractions opened (base process) and regime with all steam extractions closed. Closing of all steam extractions significantly increases turbine real developed power for 5215.88 kW and increases turbine energy and exergy losses with simultaneous decrease of turbine energy and exergy efficiencies for more than 2%. First extracted steam mass flow rate has a dominant influence on turbine power losses (in comparison to turbine maximum power when all of steam extractions are closed). Cumulative power losses caused by steam mass flow rate extractions are the highest in the fourth turbine segment and equal to 1687.82 kW.

Keywords

efficiencies; losses; power distribution; steam extractions; steam turbine

Hrčak ID:

247421

URI

https://hrcak.srce.hr/247421

Publication date:

9.12.2020.

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