Exergy, economic and environmental impact assessment and optimization of a novel cogeneration system including a gas turbine, a supercritical CO2 and an organic Rankine cycle (GT-HRSG/SCO2)
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.
About: This article is published in Applied Thermal Engineering.The article was published on 2017-01-05. It has received 182 citations till now. The article focuses on the topics: Organic Rankine cycle & Cogeneration.
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TL;DR: SCBC is promising, but it still requires more researches on commercialization, and future researches should focus on raising the efficiency of turbomachinery, designing compact heat exchangers, building up large-scale experimental facility, optimizing configurations of SCBC, and improving control strategies, etc.
161 citations
TL;DR: In this paper, a geothermal based multi-generation energy system, including organic Rankine cycle, domestic water heater, absorption refrigeration cycle and proton exchange membrane electrolyzer, is developed to generate electricity, heating, cooling and hydrogen.
153 citations
TL;DR: In this paper, a hybrid energy production/storage system comprising a compressed air energy storage, a heliostat-driven Brayton cycle, and a hydrogen production unit is proposed and thoroughly investigated.
Abstract: In this paper, a novel efficient and environmentally-friendly hybrid energy production/storage system comprising a compressed air energy storage, a heliostat-driven Brayton cycle, and a hydrogen production unit is proposed and thoroughly investigated. The aim is to minimize the pollutant emission of compressed air energy storage technology while adequately addressing intermittency and electricity curtailment of power grids with high penetration of renewable sources. The proposed system uses the surplus power and wasted heat of the solar-powered Brayton cycle to store pressurized air and hydrogen during off-peak periods, and releases them for extra power generation during peak demand periods. For the performance analysis of this hybrid solution, the reference system is precisely analyzed from thermodynamic and economic points of view. Then, training the results of the developed model employing an artificial neural network, four multi-objective optimization programs based on MOPSO, NSGA-II, PESA-II, and SPEA2 algorithms are performed to find an optimal trade-off between thermodynamic performance and economic attractiveness of the system. It is concluded that the system has an exergy round trip efficiency of 60.4% and a total cost rate of 117.5 $/GJ at the optimum solution. Applying the proposed method for the case study of Los Angeles with real historical data, 3313 ton/year Carbone-Dioxide emission is prevented, resulting in around 80,000 $/year environmental cost reduction. Also, the economic analysis indicates a payback period of shorter than 4.6 years for the system.
136 citations
TL;DR: In this article, a new hydrogen and distilled water producing system is presented, which is the combination of geothermal driven dual fluid organic Rankine cycle (ORC), proton exchange membrane (PEM) electrolyzer and reverse osmosis (RO) desalination unit.
135 citations
TL;DR: In this article, a thermodynamic modeling and optimization is carried out to compare the advantages and disadvantages of organic Rankine cycle (ORC) and Kalina cycle (KC) as a bottoming cycle for waste heat recovery from CGAM cogeneration system.
120 citations
References
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TL;DR: In this article, a thermodynamic screening of 31 pure component working fluids for organic Rankine cycles (ORC) is given using BACKONE equation of state, the fluids are alkanes, fluorinated alkane, ethers and fluorinated ethers.
1,036 citations