THERMAL SCIENCE

International Scientific Journal

Karim Maghsoudi Mehrabani

,

Abdollah Mehrpanahi

,

Vahid Rouhani

,

Sadegh Nikbakht Naser Abad

STUDY OF THE EFFECT OF USING DUCT BURNER ON THE FUNCTIONAL PARAMETERS OF THE TWO REPOWERED CYCLES THROUGH EXERGY ANALYSIS

ABSTRACT
Steam power plants have been extensively used in Iran for a long time, yet no specific step has been taken for promoting their performance. In this regard, full repowering is considered as a way to enhance the performance of steam power plants. Furthermore, because of the continental condition of Iran, duct burners can be used as a common strategy to compensate for power generation shortage caused by environmental conditions. In this study, the effect of using a duct burner on the full repowering of Be’sat Steam Cycle representing both single-and dual-pressure cycles was investigated based on exergy analysis. The results showed that by using the duct burner, due to the increase in the heat recovery steam generator inlet gas temperature, the general thermal efficiency of the combined cycle and the exergy efficiency of the combined cycle and heat recovery steam generator decreased. However, the results revealed an increase in the stack temperature and resulting exergy losses, steam flow and power generation.
KEYWORDS
repowering, heat recovery steam generator, duct burner, exergy, thermal efficiency
PAPER SUBMITTED: 2015-12-07
PAPER REVISED: 2016-12-14
PAPER ACCEPTED: 2016-12-25
PUBLISHED ONLINE: 2017-01-14
DOI REFERENCE: https://doi.org/10.2298/TSCI151207310M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [3011 - 3023]
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Study of the effect of using duct burner on the functional parameters of the two repowered cycles through exergy analysis

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence