The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Hui Jin - One of the best experts on this subject based on the ideXlab platform.
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boiling coal in water hydrogen production and Power Generation System with zero net co2 emission based on coal and supercritical water gasification
International Journal of Hydrogen Energy, 2013Co-Authors: Liejin Guo, Hui JinAbstract:Abstract Coal is the single most important fuel for Power Generation today. Nowadays, most coal is consumed by means of “burning coal in air” and pollutants such as NOx, SOx, CO2, PM2.5 etc. are inevitably formed and mixed with excessive amount of inner gases, so the pollutant emission reduction System is complicated and the cost is high. IGCC is promising because coal is gasified before utilization. However, the coal gasifier mostly operates in gas environments, so special equipments are needed for the purification of the raw gas and CO2 emission reduction. Coal and supercritical water gasification process is another promising way to convert coal efficiently and cleanly to H2 and pure CO2. The gasification process is referred to as “boiling coal in water” and pollutants containing S and N deposit as solid residual and can be discharged from the gasifier. A novel thermodynamics cycle Power Generation System was proposed by us in State Key Laboratory of Multiphase Flow in Power Engineering (SKLMFPE) of Xi'an jiaotong University (XJTU), which is based on coal and supercritical water gasification and multi-staged steam turbine reheated by hydrogen combustion. It is characterized by its high coal-electricity efficiency, zero net CO2 emission and no pollutants. A series of experimental devices from quartz tube System to a pilot scale have been established to realize the complete gasification of coal in SKLMFPE. It proved the prospects of coal and supercritical water gasification process and the novel thermodynamics cycle Power Generation System.
Hongguang Jin - One of the best experts on this subject based on the ideXlab platform.
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thermodynamic evaluation of a novel solar biomass hybrid Power Generation System
Energy Conversion and Management, 2017Co-Authors: Jie Sun, Zhang Bai, Qibin Liu, Jing Lei, Xiaohe Wang, Hongguang JinAbstract:Abstract A solar-biomass hybrid Power Generation System, which integrates a solar thermal energy collection subSystem, a biomass steam boiler and a steam turbine Power Generation block, is developed for efficiently utilizing renewable energies. The solar thermal energy is concentrated by parabolic trough collectors and is used to heat the feed-water to the superheated steam of 371 °C, then the generated solar steam is further heated to a higher temperature level of 540 °C via a second-stage heating process in a biomass boiler, the System Power Generation capacity is about 50 MW. The hybrid process of the solar energy and biomass contributes to ameliorating the System thermodynamic performances and reducing of the exergy loss within the steam Generation process. The off-design evaluation results indicate that the annual net solar-to-electric efficiency of the hybrid Power System is improved to 18.13%, which is higher than that of the typical parabolic trough solar Power System as 15.79%. The levelized cost of energy drops to 0.077 $/(kW h) from 0.192 $/(kW h). The annual biomass consumption rate is reduced by 22.53% in comparison with typical biomass Power Systems. The research findings provide a promising approach for the efficient utilization of the abundant renewable energies resources and the reduction of carbon dioxide emission.
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tower type solar heat Power Generation System with double stage thermal storage
2011Co-Authors: Wei Han, Xiang Huang, Hongguang Jin, Jianfeng Xiu, Zhihao Yao, Jianli Yuan, Zhifeng WangAbstract:The invention relates to the technical field of solar energy thermal Power Generation and discloses a tower-typed solar energy thermal Power Generation System with two-stage thermal storage. The System at least comprises a photo-thermal conversion subSystem, a two-stage thermal storage subSystem and a Power subSystem; wherein, the photo-thermal conversion subSystem is used for receiving and converging solar radiation energy, converting the received solar radiation energy into heat energy, and transmitting the heat energy to the Power subSystem or the two-stage thermal storage subSystem; the two-stage thermal storage subSystem is used for storing the heat energy input by the photo-thermal conversion subSystem and providing the heat energy for the Power subSystem when the solar radiation energy is not enough; the Power subSystem is used for converting the received heat energy into electrical energy and outputting the electrical energy. By adopting the invention, the problem that the steam is difficult to store is solved, and the difficulty that the running of a steam turbine in the previous tower-typed solar energy thermal Power Generation proposal by taking the steam as heat absorption working substance is influenced by the unstable and discontinuous solar radiation is overcome.
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a new advanced Power Generation System using chemical looping combustion
Energy, 1994Co-Authors: Masaru Ishida, Hongguang JinAbstract:A new type of Power-Generation System (called CLSA), with chemical-looping combustion, air saturation and based on energy-utilization diagrams (EUDs), is proposed. A loop of chemical reactions is substituted for conventional combustion and a process of saturation for air is introduced for the following purposes: (1) to reduce the exergy destruction caused by combustion and heat-exchange processes; (2) to separate CO2 easily from the exhaust gas of a gas turbine; (3) to recover the water used in this System. Exergy analysis of a model System indicates that the expected thermal Power-plant efficiency could be as high as 55.1% (LHV). Simultaneously, the proposed System can be used to solve environmental problems by recovering and utilizing CO2 as a by-product.
Liejin Guo - One of the best experts on this subject based on the ideXlab platform.
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boiling coal in water hydrogen production and Power Generation System with zero net co2 emission based on coal and supercritical water gasification
International Journal of Hydrogen Energy, 2013Co-Authors: Liejin Guo, Hui JinAbstract:Abstract Coal is the single most important fuel for Power Generation today. Nowadays, most coal is consumed by means of “burning coal in air” and pollutants such as NOx, SOx, CO2, PM2.5 etc. are inevitably formed and mixed with excessive amount of inner gases, so the pollutant emission reduction System is complicated and the cost is high. IGCC is promising because coal is gasified before utilization. However, the coal gasifier mostly operates in gas environments, so special equipments are needed for the purification of the raw gas and CO2 emission reduction. Coal and supercritical water gasification process is another promising way to convert coal efficiently and cleanly to H2 and pure CO2. The gasification process is referred to as “boiling coal in water” and pollutants containing S and N deposit as solid residual and can be discharged from the gasifier. A novel thermodynamics cycle Power Generation System was proposed by us in State Key Laboratory of Multiphase Flow in Power Engineering (SKLMFPE) of Xi'an jiaotong University (XJTU), which is based on coal and supercritical water gasification and multi-staged steam turbine reheated by hydrogen combustion. It is characterized by its high coal-electricity efficiency, zero net CO2 emission and no pollutants. A series of experimental devices from quartz tube System to a pilot scale have been established to realize the complete gasification of coal in SKLMFPE. It proved the prospects of coal and supercritical water gasification process and the novel thermodynamics cycle Power Generation System.
Zhang Bai - One of the best experts on this subject based on the ideXlab platform.
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thermodynamic evaluation of a novel solar biomass hybrid Power Generation System
Energy Conversion and Management, 2017Co-Authors: Jie Sun, Zhang Bai, Qibin Liu, Jing Lei, Xiaohe Wang, Hongguang JinAbstract:Abstract A solar-biomass hybrid Power Generation System, which integrates a solar thermal energy collection subSystem, a biomass steam boiler and a steam turbine Power Generation block, is developed for efficiently utilizing renewable energies. The solar thermal energy is concentrated by parabolic trough collectors and is used to heat the feed-water to the superheated steam of 371 °C, then the generated solar steam is further heated to a higher temperature level of 540 °C via a second-stage heating process in a biomass boiler, the System Power Generation capacity is about 50 MW. The hybrid process of the solar energy and biomass contributes to ameliorating the System thermodynamic performances and reducing of the exergy loss within the steam Generation process. The off-design evaluation results indicate that the annual net solar-to-electric efficiency of the hybrid Power System is improved to 18.13%, which is higher than that of the typical parabolic trough solar Power System as 15.79%. The levelized cost of energy drops to 0.077 $/(kW h) from 0.192 $/(kW h). The annual biomass consumption rate is reduced by 22.53% in comparison with typical biomass Power Systems. The research findings provide a promising approach for the efficient utilization of the abundant renewable energies resources and the reduction of carbon dioxide emission.
Hassan Fathabadi - One of the best experts on this subject based on the ideXlab platform.
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novel standalone hybrid solar wind fuel cell Power Generation System for remote areas
Solar Energy, 2017Co-Authors: Hassan FathabadiAbstract:Abstract A novel standalone hybrid solar/wind/fuel cell (FC) Power Generation System is designed and constructed. The contribution of this work is that the large-scale constructed hybrid System combines two renewable resources (solar and wind energy) with a FC System used as a standby Power source to produce electric energy. Moreover, it maximally converts solar and wind energy into electric Power because it uses a novel fast and highly accurate unified maximum Power point tracking (MPPT) technique which concurrently tracks the maximum Power points of both photovoltaic (PV) System and wind energy conversion System (WECS) implemented in the hybrid System. Few hybrid solar/wind/FC Power sources reported in the literature are simulated models, and moreover, there is not any new MPPT consideration in them. It is experimentally verified that the constructed hybrid System efficiently produces electric energy for a remote area under different environmental conditions such as cloudy sky. The MPPT technique implemented in the standalone hybrid solar/wind/FC System is also compared to the state-of-the-art MPPT methods, the comparison explicitly demonstrates that the technique provides the highest MPPT efficiencies of 99.60% and 99.28% along with the shortest tracking convergence times of 12 ms and 15 ms respectively in PV Systems and WECSs.