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Journal ArticleDOI

Modeling and 6E analysis of a novel quadruple combined cycle with turbocompressor gas station

21 Jun 2021-Journal of Thermal Analysis and Calorimetry (Springer International Publishing)-pp 1-33
TL;DR: In this paper, a quadruple combined cycle has been proposed based on a turbocompressor gas station in Qom, Iran, including three 25MW nominal gas turbines that each turbine provided power requirement for compressor, has been considered.
Abstract: Natural gas compressor stations have a significant potential for waste heat recovery. In this paper, a novel quadruple combined cycle has been proposed based on a turbocompressor gas station. In this regard, Serajeh gas station in Qom (Iran), including three 25 MW nominal gas turbines that each turbine provided power requirement for compressor, has been considered. Steam and organic Rankine cycles have been used to recover waste heat and generate more power, which uses exhaust gas turbines. Seven organic fluids have been examined. Energy, Exergy, Exergoeconomic, Exergoenvironment, Emergoeconomic, and Emergoenvironmental (6E) analyses have better understood the system from different perspectives. In this regard, computer code has been developed in MATLAB for 6E analysis. Verification of thermodynamic simulation of developed code has been compared with THERMOFLEX software and reference data with high accuracy. Also, sensitivity analysis was carried out based on main parameters. Advanced exergy-based analysis associated with endogenous/exogenous and avoidable/unavoidable parts has been performed for deep analysis of each component. The results show an increase of approximately 16% in the integrated cycle's thermal efficiency compared to gas turbines. The combustion chamber has the highest exergy destruction rate, and the LP superheater and economizer have the lowest exergy efficiency. R113 was selected as the best organic fluid from thermodynamic and R141b from an economic and environmental point of view. Cost rates and environmental impacts of the entire system will be approximately 3300 $ h−1 and 2038 pts h−1, respectively.
Citations
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Journal ArticleDOI
TL;DR: In this paper , a new design and dynamic simulation approach to a solar energy-driven polygeneration system integrating gas and steam turbine cycles, organic Rankine cycle (ORC), CO2 capture, and humidification-dehumidification (HDH) desalination is introduced.

9 citations

Journal ArticleDOI
01 Oct 2022-Energy
TL;DR: In this article , an innovative solar-natural gas-driven polygeneration system is proposed for the simultaneous production of power, oxygen, and hydrogen to reduce the environmental impacts of the gas turbine flue gas.

6 citations

Journal ArticleDOI
TL;DR: In this paper , a novel poly-generation system has been proposed to produce power, heat, freshwater, and hydrogen-based on biomass and solar energy, considering the determination of environmental laws and the need to transform Kish Island into a green island for residents and tourists.

5 citations

Journal ArticleDOI
TL;DR: In this paper , a machine learning-based multi-objective optimization approach of an integrated solar energy-driven polygeneration and CO2 capture system for meeting a greenhouse's power, freshwater, and CO 2 demands was introduced.
Abstract: Renewable energy-driven decentralized polygeneration systems herald great potential in tackling climate change issues and promoting sustainable development. In this light, this study introduces a new machine learning-based multi-objective optimization approach of an integrated solar energy-driven polygeneration and CO2 capture system for meeting a greenhouse’s power, freshwater, and CO2 demands. The integrated solar-assisted polygeneration system comprises a 486-kW gas turbine, two steam turbines, two organic Rankine cycles, a humidification-dehumidification desalination unit to recover waste heat while producing freshwater, and a post-combustion CO2 capture unit. The proposed system is mathematically modelled and evaluated via a dynamic simulation approach implemented in MATLAB software. Moreover, sensitivity analysis is conducted to identify the most influential decision variables on the system performance. The machine learning-based multi-objective optimization strategy combines Genetic Programming (GP) and Artificial Neural Networks (ANN) to minimize total costs, environmental impacts, and economic and environmental emergy rates whilst maximizing the system exergy efficiency and freshwater production. Finally, the system performance is further investigated through comprehensive Energy, Exergy, Exergoeconomic, Exergoenvironmental, Emergoeconomic, and Emergoenvironmental (6E) analyses. The three-objective optimization of the integrated system reduces total costs, environmental impacts, and monthly environmental emergy rate by 11.4%, 34.31% and 6.38%, respectively. Furthermore, reductions up to 56.81%, 50.19% and 77.07%, respectively, are obtained for the previous indicators by the four-objective optimization model. Hence, the proposed multi-objective optimization methodology represents a valuable tool for decision-makers in implementing more cost-effective and environment-friendly solar-assisted integrated polygeneration and CO2 capture systems.

3 citations

References
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Journal ArticleDOI
TL;DR: In this article, a comparison of pure and mixture working fluids' applications and a discussion of all types of expansion machines' operating characteristics for an effective organic Rankine cycle system is presented.
Abstract: How to effectively utilize low and medium temperature energy is one of the solutions to alleviate the energy shortage and environmental pollution problems. In the past twenty years, because of its feasibility and reliability, organic Rankine cycle has received widespread attentions and researches. In this paper, it reviews the selections of working fluids and expanders for organic Rankine cycle, including an analysis of the influence of working fluids' category and their thermodynamic and physical properties on the organic Rankine cycle's performance, a summary of pure and mixed working fluids' screening researches for organic Rankine cycle, a comparison of pure and mixture working fluids' applications and a discussion of all types of expansion machines' operating characteristics, which would be beneficial to select the optimal working fluid and suitable expansion machine for an effective organic Rankine cycle system.

1,101 citations

Journal ArticleDOI
01 Oct 2011-Energy
TL;DR: In this article, a comprehensive exergy, exergoeconomic and environmental impact analysis and optimization is reported of several combined cycle power plants (CCPPs), and a multi-objective optimization is performed to determine the best design parameters, accounting for exergetic, economic and environmental factors.

441 citations

Journal ArticleDOI
01 Jun 2010-Energy
TL;DR: In this article, the authors examined the exhaust waste heat recovery potential of a high-efficiency, low-emissions dual fuel low temperature combustion engine using an organic Rankine Cycle (ORC), and quantified the potential improvements in fuel conversion efficiency and specific emissions (NO x and CO 2 ) with hot exhaust gas recirculation (EGR) and ORC turbocompounding.

247 citations

Journal ArticleDOI
TL;DR: In this article, a novel cogeneration system including a gas turbine, a heat recovery steam generator, a supercritical carbon dioxide recompression Brayton cycle and an organic Rankine cycle is reported.

182 citations

Journal ArticleDOI
TL;DR: In this article, the effect of solar collector field on the performance of cogenerative system was investigated in order to produce around 400MW of electrical power and the results revealed that the condenser needs to increase investment costs to increase the total thermodynamic efficiency and the exergetic efficiency to reduce the total environmental impact.
Abstract: The exergoeconomic and exergoenvironmental analysis of cogenerative system that combine a gas/steam turbine system and a solar field have been performed. The model is developed in order to produce around 400 MW of electrical power to investigate the effect of solar collector field in performance of each component. In addition, the exergy destruction, exergetic efficiency, cost rate and environmental impact per exergy unit, cost rate and environmental impact per exergy unit of product and fuel, cost rate and environmental impact rate associated with the exergy destruction, exergoeconomic and exergoenvironmental factor for each component are evaluated. The results reveal that the condenser needs to increase investment costs to increase the total thermodynamic efficiency and it needs to increase its exergetic efficiency to reduce the total environmental impact from an exergoeconomic and exergoenvironmental point of view. The exergoeconomic and exergoenvironmental analysis show that the effects of solar field leads to 4.2% increasing in the net produced electricity; 2.6% increasing in the average cost rate per exergy unit of electricity and −3.8% decreasing average environmental impact per exergy unit of electricity.

167 citations