Title: Analyses and assessments of a direct steam generation PTC-based solar power plant with two approaches of exergy and emergy

Authors: Mohsen Yazdi; Mohammad Hasan Khoshgoftar Manesh; Saeed Kabiri

Addresses: Energy, Environmental, and Biological Systems Research Lab (EEBRLab), Division of Thermal Sciences and Energy Systems, Department of Mechanical Engineering, Faculty of Technology and Engineering, University of Qom, Qom, Iran; Center of Environmental Research, University of Qom, Qom, Iran ' Energy, Environmental, and Biological Systems Research Lab (EEBRLab), Division of Thermal Sciences and Energy Systems, Department of Mechanical Engineering, Faculty of Technology and Engineering, University of Qom, Qom, Iran; Center of Environmental Research, University of Qom, Qom, Iran ' Center of Environmental Research, University of Qom, Qom, Iran

Abstract: The present study focuses on the energy, exergy, exergoeconomic, exergoenvironmental, emergoeconomic and emergoenvironmental analyses, besides enhanced exergy analysis, for a solar thermal power plant with direct steam generation. Results show that the overall emergoeconomic factor of the DSG solar power plant is 85.34%, and its total emergoenvironmental factor is 85.56%. Enhanced exergy analysis reveals that the avoidable percentage of the emergoenvironmental rate allocated to exergy destruction of the solar field, low-pressure turbine, and high-pressure turbine is 10%, 42%, and 34%, respectively. These values are equal to 11%, 45%, and 38%, respectively.

Keywords: PTC solar power plant; exergoeconomic; exergoenvironmental; enhanced exergy analysis; emergy.

DOI: 10.1504/IJEX.2022.122304

International Journal of Exergy, 2022 Vol.38 No.1, pp.1 - 26

Received: 23 Dec 2020
Accepted: 17 Jul 2021
Published online: 19 Apr 2022 *

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