Thermodynamic (energy-exergy) analysis of combined cycle power plant for improving thermal energetic and exergetic efficiencies by integration of organic Rankine cycle (ORC)

The exergy analysis (second law analysis) is used for providing information about the losses qualitatively as well as quantitatively along with their locations. Exergetic (thermodynamic) optimization improves the performance of a system by reducing the exergetic inefficiencies (exergy destruction and exergy losses) and increasing exergetic efficiency. The primary objective of this work is to utilize the waste heat from the stack which is coming from HRSG by integration of ORC plant with combined cycle. Then thermodynamic analysis is done .After comparison it is found that the system overall thermodynamic efficiencies (thermal and exergetic) are improved by integration of ORC system to existing combined cycle. Thermal efficiencies are improved by 3.32% and 4.09% first law and second law (exergetic efficiency) respectively. There is also separately calculation is done for each component. A program code is established to perform the calculations required for the exergy plant analysis considering real variation ranges of the main operating parameters such as pressure ratio, air fuel ratio. The effects of theses parameters on the system performances are presented in this paper.

This article is published in peer review journal and open access journal, International journal of research in engineering and innovation (IJREI) which have a high impact factor journal for more details regarding this article, please go through our journal website.

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