Exergoeconomic and environmental analysis of a combined power and water desalination plant with parabolic solar collector

Javadi, Mohammad; Khalaji, Mehdi; Ghasemiasl, Ramin

doi:10.5004/dwt.2020.25800

Cited by 16 publications

(7 citation statements)

References 35 publications

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“…Ghasemiasl et al [13] proposed a multigeneration system for an existing combined cycle power plant and reported an exergy efficiency of 49.64% and an energy efficiency of 57.36%, resulting in lower emissions and fuel costs. Javadi et al [14] suggested improved performance and a possible further reduction in emissions achievable by adding a multi-effect desalination cycle and parabolic solar collectors to a combined cycle power plant. In addition to lower NG prices, the existence of sufficient gas infrastructures, or a competitive market environment, or both of them is needed in order to couple retail electricity prices with the cost of natural gas [15].…”

Section: Use Ng For Electricity Generationmentioning

confidence: 99%

Investigating a Retrofit Thermal Power Plant from a Sustainable Environment Perspective—A Fuel Lifecycle Assessment Case Study

Hua

2022

Sustainability

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Retrofitting thermal power plants is a valuable opportunity to guide Taiwan’s electricity generation towards sustainability. Using an existing power plant nearing decommissioning as a case study, we hypothesized about fuel source options for retrofitting the power plant and compared the resulting impact on lifecycle atmospheric emissions. Our use of the lifecycle assessment (LCA) methodology reflected Taiwan’s heavy reliance on the imports and shipping of primary energy sources. We found that after accounting for the contribution of liquefaction and regasification (17%), gas-fired electricity still has significantly lower lifecycle greenhouse gases (GHGs) than coal or fuel oil (FO). In addition, we found that if natural gas (NG) is selected to achieve the greenhouse gas reduction of thermal power, the co-benefit of air pollution reduction can also be achieved at the same time.

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Section: Use Ng For Electricity Generationmentioning

confidence: 99%

Investigating a Retrofit Thermal Power Plant from a Sustainable Environment Perspective—A Fuel Lifecycle Assessment Case Study

Hua

2022

Sustainability

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“…In recent studies, Javadi et al [19][20][21] have explored the use of different combinations, including gas and steam, parabolic solar collectors, MED desalination units, and reverse osmosis, to generate water and electricity. They worked on the optimization of these cogeneration systems through performing exergy, economic, and environmental analyses.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Desalination Performance with a Thermal Vapor Compression System

Fergani

Triki

Menasri

et al. 2023

Water

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Multi-effect distillation with thermal vapor compression (MED-TVC) is a highly energy-efficient desalination technology that can provide a reliable and sustainable source of high-quality water, particularly in areas with limited energy infrastructure and water resources. In this study, a numerical model based on exergoeconomic approach is developed to analyze the economic performance of a MED-TVC system for seawater desalination. A parallel/cross feed configuration is considered because of its high energy efficiency. In addition, a parametric study is performed to evaluate the effects of some operational parameters on the total water price, such as the top brine temperature, seawater temperature, motive steam flow rate, and number of effects. The obtained results indicate that the total water price is in the range of 1.73 USD/m3 for a distilled water production of 55.20 kg/s. Furthermore, the exergy destructions in the effects account for 45.8% of the total exergy destruction. The MED effects are also identified to be the most relevant component from an exergoeconomic viewpoint. Careful attention should be paid to these components. Of the total cost associated with the effects, 75.1% is due to its high thermodynamic inefficiency. Finally, the parametric study indicates that adjusting the top brine temperature, the cooling seawater temperature, the motive steam flow rate, and the number of effects has a significant impact on the TWP, which varies between 1.42 USD/m3 and 2.85 USD/m3.

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“…For instance, Kianfard et al [14] investigated the performance of a geothermal-based system used to cogenerate hydrogen and distilled water via thermodynamic, exergoeconomic analyses. As another example, Javadi et al [15] proposed integrating a MED system, equipped with parabolic solar collectors with the Abadan combined cycle power plant (CCPP) so as to cogenerate power and water. By calculating changes in exergy efficiency, carbon dioxide emission, and the cost of electricity generation which ensued from adding the MED, they evaluated performance enhancement.…”

Section: Introductionmentioning

confidence: 99%

4E Transient Analysis of a Solar-Hybrid Gas-Turbine Cycle Equipped with Heliostat and MED

Ghasemiasl,

Dehghanizadeh,

Javadi

et al. 2023

Sustainability

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The current study investigates a cogeneration cycle of power and freshwater integrated with a solar system. The solar system is of the heliostat type, which is considered to preheat the inlet air in the combustion chamber of a 25-MW gas turbine. The waste heat of the turbine output stream is used to produce freshwater. Parameters such as the ambient temperature and solar irradiance significantly affect the system’s performance; hence, all analyses, including those pertaining to energy, exergy, economics, and environment, were conducted transiently, with a one-hour time step throughout the year so that the impacts of these effective parameters could be examined. Besides the analysis assuming a constant mass flow rate for the air entering the compressor, the calculations were repeated with the assumption of a constant volumetric flow rate to evaluate the cycle in the same conditions as those of natural gas power plants. Given the constant volumetric flow rate, for every 10-degree increase in temperature, the compressor power consumption decreased by approximately 2%. Moreover, a sensitivity analysis of the cycle performance in terms of ambient temperature was performed, and the corresponding results are presented. Finally, some correlations are presented to estimate variations in compressor power consumption and net turbine power due to temperature variations. The results demonstrate that in Bushehr, Iran, every one-degree increase in ambient temperature leads to an approximately 0.67 percentage decrease in net-generated power. In the end, the performance of the cycle was investigated under climatic conditions and solar irradiation intensities in several cities in Iran and some cities in different countries in which heliostat power plants have already been established. The results obtained in these cities were compared; it was concluded that the lowest annual cost of electricity generation is related to Isfahan in Iran, which reduces the cost of electricity generation by more than 20% (2.32 Cents/kWh) compared to the base cycle.

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Exergoeconomic and environmental analysis of a combined power and water desalination plant with parabolic solar collector

Cited by 16 publications

References 35 publications

Investigating a Retrofit Thermal Power Plant from a Sustainable Environment Perspective—A Fuel Lifecycle Assessment Case Study

Investigating a Retrofit Thermal Power Plant from a Sustainable Environment Perspective—A Fuel Lifecycle Assessment Case Study

Analysis of Desalination Performance with a Thermal Vapor Compression System

4E Transient Analysis of a Solar-Hybrid Gas-Turbine Cycle Equipped with Heliostat and MED

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