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Thermo-Economic Analysis for the Feasibility Study of a Binary Geothermal Power Plant in India

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Modeling, Simulation and Optimization

Part of the book series: Smart Innovation, Systems and Technologies ((SIST,volume 292))

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Abstract

The objectives of ORC thermodynamic analysis are maximum performance and thermal conversion efficiency. For a feasibility design study, it is important to optimize both energy performance and system cost. Based on typical geothermal resources, this article describes a feasibility study for a binary geothermal plant in India. For important cycle design alternatives, a variety of working fluids, and component selection factors, thermodynamic and economic evaluations were done. The target function for selecting the most thermo-economic designs is calculated by dividing total Purchased Equipment Costs (PEC) by net electrical power output (Wnet). The working fluids investigated are n-pentane, R245fa, and R134a. The thermodynamic analysis shows that at a given turbine inlet pressure and mass flow rate of the working fluid, the net electrical power output (Wnet) of the cycle design reaches its maximum. Two-stage designs outperform one-stage designs in terms of Wnet, thermal, and exergy efficiency. According to an economic comparison, working fluid types and cycle designs have a significant impact on economic performance as assessed by PEC. The top five options were subjected to profitability analysis. The results show that a normal Rankine cycle with a two-stage turbine employing n-pentane is the most thermo-economical design based on the brine resource and reinjection conditions.

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Author information

Authors and Affiliations

  1. Department of Mechanical Engineering, NIT, Agartala, Tripura, India

    Shivam Prajapati, Shulabh Yadav, Ashis Acharjee & Prasun Chakraborti

  2. Department of Chemical Engineering, SVNIT, Surat, India

    Raghav Khandelwal & Priyam Jain

Authors
  1. Shivam Prajapati
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  2. Shulabh Yadav
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  3. Raghav Khandelwal
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  4. Priyam Jain
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  5. Ashis Acharjee
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  6. Prasun Chakraborti
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Corresponding author

Correspondence to Shivam Prajapati .

Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, National Institute of Technology Silchar, Silchar, India

    Biplab Das

  2. Department of Computer Science and Engineering, National Institute of Technology Silchar, Silchar, India

    Ripon Patgiri

  3. National Institute of Technology Silchar, Silchar, India

    Sivaji Bandyopadhyay

  4. Department of Automatics and Applied Software, “Aurel Vlaicu” University of Arad, Arad, Romania

    Valentina Emilia Balas

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Prajapati, S., Yadav, S., Khandelwal, R., Jain, P., Acharjee, A., Chakraborti, P. (2022). Thermo-Economic Analysis for the Feasibility Study of a Binary Geothermal Power Plant in India. In: Das, B., Patgiri, R., Bandyopadhyay, S., Balas, V.E. (eds) Modeling, Simulation and Optimization. Smart Innovation, Systems and Technologies, vol 292. Springer, Singapore. https://doi.org/10.1007/978-981-19-0836-1_38

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