Novel analysis of second law and irreversibility for a solar power plant using heliostat field and molten salt

Zolfagharnasab, Mohammad Hossein; Aghanajafi, Cyrus; Kavian, Soheil; Heydarian, Niloufar; Ahmadi, Mohammad Hossein

doi:10.1002/ese3.802

Cited by 16 publications

(2 citation statements)

References 42 publications

(84 reference statements)

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“…The energy and exergy efficiencies of the plant were calculated as 45.81% and 47.19%, respectively. Zolfagharnasab et al [14] investigated a solar tower with the Rankine cycle from a thermodynamic point of view. It was determined that the exergy efficiency of the receiver decreased from 57% to 52% with the increase in ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy analysis of a solar energy-based power generation system

Koç¹,

Özdemir²,

Köse³

et al. 2023

Res. Eng. Struct. Mater.

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Nowadays, energy is obtained from both fossil fuels and renewable energy sources. The use of fossil fuels causes climate change and global warming. The use of renewable energy systems ensures the reduction of greenhouse gas emissions and, as a result, the reduction of global warming. In this study, a solarbased electricity generation facility, which is one of the renewable energy sources, is discussed. The power generation potential of the solar system with integrated Rankine cycle under the changing climatic conditions of Iskenderun, which is a region with high solar energy potential, is investigated by thermodynamic analysis. A solar power tower was selected as the solar energy system in the facility. In the facility, electrical energy is obtained by sending the heat energy obtained from the solar power tower to the steam Rankine cycle. Energy and exergy analysis were performed to find the performance of the facility and the main sources of exergy destruction. As a result of the thermodynamic analysis, the net power obtained from the system increased with the increase of the input heat. During the day, 495.3 MWh/day of heat entered the system and 202.3 MWh/day of net power was obtained from this heat. The highest exergy destruction in the system occurred at 12:00. The highest exergy destruction occurred in the receiver at this hour and was calculated as 13.83 MW. The daily average energy and exergy efficiencies of the system were found to be 40.8% and 66.08%, respectively.

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Section: Introductionmentioning

confidence: 99%

Energy and exergy analysis of a solar energy-based power generation system

Koç¹,

Özdemir²,

Köse³

et al. 2023

Res. Eng. Struct. Mater.

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“…The above information allows us to calculate the total exergy destruction of the cycles, as well as, identify the component that contributes the greatest exergy destruction to each cycle, which will allow the definition of technological strategies or operating alternatives. According to Hossein-Zolfagharnasab et al [ 20 ], the code generated by GNU Octave allows us to program the energy conservation and exergy balance of a similar energy system with precision and in a friendly way.…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis Using a Theoretical Formulation of a Geothermal Power Plant in Cerro Prieto, México

Colorado-Garrido

Alcalá

Alaffita-Hernández

et al. 2021

Entropy

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The purpose of this research is the calculation of the exergy destruction of the single-flash and double-flash cycles of a geothermal power plant located on the ladder of the 233 m Cerro Prieto volcano, on the alluvial plain of the Mexicali Valley, Mexico. The methodology developed in this research presents thermodynamic models for energy and exergy flows, which allows determining the contribution of each component to the total exergy destruction of the system. For the case-base, the results indicate that for the single-flash configuration the efficiency of the first and second law of thermodynamics are 0.1888 and 0.3072, as well as the highest contribution to the total exergy destruction is provided by the condenser. For the double-flash configuration, the efficiency of the first and second law of thermodynamics are 0.3643 and 0.4983. The highest contribution to the total exergy destruction is provided by the condenser and followed by the low-pressure turbine.

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A New Stable Solar System for Electricity, Cooling, Heating, and Potable Water Production in Sunny Coastal Areas

Khani

Mohammadpourfard

2023

Power Systems

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Novel analysis of second law and irreversibility for a solar power plant using heliostat field and molten salt

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 16 publications

References 42 publications

Energy and exergy analysis of a solar energy-based power generation system

Energy and exergy analysis of a solar energy-based power generation system

Exergy Analysis Using a Theoretical Formulation of a Geothermal Power Plant in Cerro Prieto, México

A New Stable Solar System for Electricity, Cooling, Heating, and Potable Water Production in Sunny Coastal Areas

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