A comparative thermoeconomic analysis and optimization of two different combined cycles by utilizing waste heat source of an MSWPP

Emrah Ozahi*, Aysegul Abusoglu, Alperen Tozlu

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6 Atıf (Scopus)

Özet

In this paper, thermodynamic and thermoeconomic analysis as well as genetic algorithm optimization of two combined cycles, a gas turbine-organic Rankine cycle (GT-ORC) and a gas turbine-Kalina cycle (GT-KAL) are carried out. The novelty of this study is that the cycles are adapted to an actual solid waste power plant to generate additional power from the exhaust gas. Thus, the power generation capacity of the actual power plant can be raised by using the combined cycle. Due to this reason, besides the thermodynamic analysis of the cycles, thermoeconomic analyses and optimizations are also very important in order to improve the actual system capacity. The net power output of GT-ORC and GT-KAL are found to be 1.51 MW and 1.59 MW, respectively. The results obtained are seen to be reasonable when compared to the net power output of the power plant (5.66 MW). Another originality of this study is that the thermoeconomic results are improved by utilizing a multi-objective optimization method namely non-dominated sorting genetic algorithm method (NSGA-II). Thus, the two objectives, total power output and the total cost rate, at the design stage of the cycles are optimized and enhanced. Due to the optimization results, it is found that the net power output of the GT-ORC and GT-KAL are increased by 11.34% and 0.99%, respectively, while the total cost rates are decreased by 18.59% and 1.31%, respectively. GT-ORC with the net power output of 1.70 MW is seen to be more efficient as compared to GT-KAL which produces a net power output of 1.61 MW. However, the total and the capital cost rates of GT-ORC are found to be higher than those of GT-KAL.

Orijinal dilİngilizce
Makale numarası113583
DergiEnergy Conversion and Management
Hacim228
DOI'lar
Yayın durumuYayınlandı - 15 Oca 2021

Bibliyografik not

Publisher Copyright:
© 2020 Elsevier Ltd

Finansman

This study is supported by TUBİTAK (the Scientific and Technological Research Council of Turkey) with the project under the grant number of 114 M142. The authors would like to thank TUBİTAK and CEV (Clean Energy & Vehicles) energy. This study is supported by TUB?TAK (the Scientific and Technological Research Council of Turkey) with the project under the grant number of 114 M142. The authors would like to thank TUB?TAK and CEV (Clean Energy & Vehicles) energy.

FinansörlerFinansör numarası
TUB?TAK
TUBİTAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu114 M142

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