Energy, Exergy analysis and performance evaluation of a vacuum evaporator for solar thermal power plant Zero Liquid Discharge Systems

Vakilabadi, Moslem Akbari; Bidi, Mokhtar; Najafi, Alireza; Ahmadi, Mohammad Hossein

doi:10.1007/s10973-019-08463-7

Cited by 40 publications

(10 citation statements)

References 58 publications

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“…The fuel consumption and recyclable heat from the gas turbine exhaust in partial loads can also be calculated from Eqs. (11) and (12), respectively [19,36].…”

Section: Gas Turbine Energy Analysismentioning

confidence: 99%

“…Nouri [10] proposed and simulated a new system of combined heat and power with the Brighton cycle as the main electricity generation unit using renewable energy system, compressed air energy system, and organic Rankine and Rankine cycles for residential approaches. Vakilabadi [11] evaluated the process of a ZLD system using energy and exergy analysis. Jamalabadi [12] has examined a hybrid system including a fuel cell module and a small-scale gas turbine based on the energy and exergy efficiency to choose an optimal compressor pressure ratio to minimize the carbon dioxide emission.…”

Section: Introductionmentioning

confidence: 99%

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WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

Norouzi

2021

Tr Ren Energy

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The combined heating and power (CHP) system is among the most effective ways to increase energy and exergy efficiencies, reduce fuel consumption, and reduce operational costs. In this study, the combination of an electricity and heat CHP system with the prime movers of a gas turbine and a horizontal axis wind turbine under the strategy of providing electric charge has been investigated. This study aims to evaluate the effect of the wind turbine on the system. The Blade Element Momentum Theory (BEM) is used to model the wind turbine under different wind speeds, pitch angle, and tip speed ratios to show their effect on the gas turbine system under different combustion chamber temperatures and pressure ratios. The results show that the proposed CHP system has significant advantages over the separate production system. It is shown that the best operating condition for the wind turbine is at the wind speed of 12 m/s, the pitch angle of 5°, and the tip speed ratio of 3. Moreover, the wind speed and tip speed ratio effects become considerable at the high-pressure ratios of more than ten and the combustion chamber temperature below 1250°C on the total system's exergy efficiency. Also, compared to the separate production mode, operational costs and fuel consumption are reduced by about 55% and 60%, respectively. Finally, taking into account the interest rate, the payback period will be equal to 5.4 years.

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“…The fuel consumption and recyclable heat from the gas turbine exhaust in partial loads can also be calculated from Eqs. (11) and (12), respectively [19,36].…”

Section: Gas Turbine Energy Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

Norouzi

2021

Tr Ren Energy

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“…Ghasempour et al [ 18 ] carried out the thermodynamic and economic analysis of a transcritical carbon dioxide power cycle coupled with solar thermal subsystem and LNG subsystem. Similary, Ahmedi et al [ 22 ] used the exergetic analysis as a strong tool to evaluate the performance of a vacuum evaporator for solar thermal power plant zero liquid discharge systems. Exergoeconomic analysis emerges as a correct method not only for renewable energy sources but also for the use of conventional energy sources [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic analysis of photovoltaic thermal systems based on phase change materials and natural zeolites for thermal management

Kandilli

Uzel

2021

J Therm Anal Calorim

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Conventional photovoltaic thermal (PVT) systems provide unstable thermal energy, which changes throughout the day. In PVT systems, phase change materials (PCMs) and heat storage materials could be used to make thermal energy more stable and provide longer-term thermal energy. In the present study, exergoeconomic analysis of PVT systems integrated with natural zeolites has been firstly carried out, and the results were compared with the results of PVT systems integrated with PCM and conventional one. PVT systems integrated with paraffin and stearic acid, common PCMs and conventional PVT systems were analyzed by specific exergy costing method, systems were compared exergoeconomically and suggestions were made to improve the economic performance of PVT systems. As a result of the analyzes conducted with 297 data obtained experimentally, the average energy efficiencies were calculated as 33%, 40%, 37% and 32% for paraffin, natural zeolite, stearic acid and conventional PVT system, respectively. Besides, average exergy efficiencies were 24%, 24%, 22% and 22% for paraffin, zeolite, stearic acid and conventional PVT system, respectively. The average entropy generation of the PVT based paraffin; natural zeolite, stearic acid and conventional one were found as 2.11, 2.29, 2.18 and 2.07 W K −1 , respectively. According to the exergoeconomic analysis, specific exergy flow cost values were found as 0.206, 0.176, 0.204 and 0.206 € kWh −1 for the PVTs based on paraffin, natural zeolite, stearic acid and the conventional PVT. It was concluded that the natural zeolite-based PVT system was found as the best system exergoeconomically.

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“…However, the application of exergy analysis to the system and the application of environmental analysis to study emissions values from an environmental standpoint provide better recognition of the engine's world [15][16][17]. Exergy is the maximum available work of a specified rate of energy to achieve the ambient condition [18,19].…”

mentioning

confidence: 99%

“…However, KSPO diesel blend had slightly higher smoke, HC and NO x emissions than diesel fuel. Vakilabadi et al [18] applied energy and exergy analyses on a solar thermal power plant. In another study, Das et al [26] analyzed the diesel engine by using energy and exergy analyses and evaluated the emission results.…”

mentioning

confidence: 99%

Energy, exergy and environmental assessments of biodiesel and diesel fuels for an internal combustion engine using silicon carbide particulate filter

Yildiz

Çalışkan

Mori

2020

J Therm Anal Calorim

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In this study, an internal combustion engine is experimentally analyzed under 100 Nm engine load using biodiesel and diesel fuels. The analyses of energy, exergy and environment are also applied to the internal combustion engine without after treatment system (Engine-Out) and with silicon carbide-based diesel particle filter (SiC-DPF) after treatment system. The impact of the utilization of SiC-DPF on the exhaust emissions and energy, exergy, environmental analyses results are examined. It is determined that (1) the work rate of diesel-fueled engine is higher than the biodiesel-fueled engine. (2) When energy and exergy losses are taken into consideration, the use of SiC-DPF has a positive effect on the emissions of the biodiesel-fueled engine, but it does not have the same effect for the diesel-fueled engine. (3) The biodiesel-fueled engine has higher energy and exergy efficiencies than diesel-fueled engine with and without after treatment systems. (4) In terms of exergy destruction, the results of the diesel-fueled engine have the maximum value with the use of SiC-DPF after treatment system, while the results of the biodiesel-fueled engine have the minimum value with the use of SiC-DPF. This reveals the effectiveness of the use of SiC-DPF after treatment system. (5) The emission rate of CO 2 is obtained as maximum for the biodiesel-fueled engine. Also, the minimum CO 2 emission rate is determined for the diesel-fueled engine without after treatment system. The use of SiC-DPF contributes to a reduction in CO 2 emission for the biodiesel fuel, while it causes an increase for the diesel fuel. (6) The entropy generation rate of the biodiesel-fueled engine is lower than the diesel-fueled engine with and without after treatment options. This study could help future studies on the choice of fuels and utilization of after treatment systems in the internal combustion engines in terms of better environment.

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Energy, Exergy analysis and performance evaluation of a vacuum evaporator for solar thermal power plant Zero Liquid Discharge Systems

Cited by 40 publications

References 58 publications

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

WITHDRAWN: Exergy and Energy Analysis of a CHP System with a Gas Turbine and a Horizontal Axis Wind Turbine

Exergoeconomic analysis of photovoltaic thermal systems based on phase change materials and natural zeolites for thermal management

Energy, exergy and environmental assessments of biodiesel and diesel fuels for an internal combustion engine using silicon carbide particulate filter

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