Second law evaluation and sensitivity analysis of a thermal power plant operating with 10 different types of low grade Turkish lignites

Amirabedin E., Durmaz A.

INTERNATIONAL JOURNAL OF EXERGY, vol.11, no.3, pp.286-301, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1504/ijex.2012.050226
  • Journal Name: INTERNATIONAL JOURNAL OF EXERGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.286-301
  • Keywords: TPP, thermal power plant, low grade lignite, energy efficiency, environmental control, exergy and sensitivity analysis, CO2 and SO2 emissions, design, optimisation, EXERGY ANALYSIS, COAL, ENERGY, TURKEY, MW
  • Gazi University Affiliated: Yes

Abstract

Second law and sensitivity analysis of a lignite-fired Thermal Power Plant (TPP) are implemented by using the data obtained from a simulated 245 MWel TPP in Thermoflex simulation software. In this regard, exergy destruction and exergy efficiency of each component of the power plant and power generation, emissions and exergetic performance of the overall TPP is determined. Also sensitivity analysis is carried out by changing some essential parameters. In addition, power plant is fired with 9 other types of Turkish lignites. From exergy efficiency and emissions perspectives, it can be stated that, for the same power generation capacity, Soma lignite can be considered as the best lignite type among others. Moreover, for low grade Turkish lignites, two certain coefficients have been determined, in order to calculate directly the approximate fuels chemical exergies with the help of Lower Heating Value (LHV) and Higher Heating Value (HHV) of the lignites.