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SSRN 2024年

作者： Li, Xinyu Zhang, Dalin Jiang, Dianqiang Zhou, Xingguang Lv, Xindi Tian, Wenxi Qiu, Suizheng Su, Guanghui State Key Laboratory of Multiphase Flow in Power Engineering Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology School of Nuclear Science and Technology Xi’an Jiaotong University Xi’an710049 China

The new generation of reactor technology: Fluoride-Salt-cooled high-Temperature Advanced Reactor (FuSTAR), mainly applied to remote, underground, and arid areas. The design of the heat transport system and Passive Residual Heat Removal System (PRHRS) of FuSTAR has been finished, but the verification still needs to be carried out. In this study, the Definite Solution Analogy Theory (DSAT) was used for scaling analysis, and the scaling experiment platform was built. DSAT was verified through numerical simulation and experiment results. The numerical test results show the similarity of physical fields in dimensionless space on the prototype and experiment under the DSAT framework. The steady-state experiment results show that the prototype of PRHRS can take away more than 1% of the decay heat of the total thermal power. The transient experiment results show that the maximum deviation of dimensionless solutions is less than 4%, which proves the high accuracy of DSAT and the PRHRS based on this framework can effectively remove the decay heat in the reactor. This work can be used to extend the scaling method of thermal-hydraulic in high dimensional space and transient conditions. © 2024, The Authors. All rights reserved.

关键词： Fluorine compounds

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Data-Driven Surrogate Model for the Dynamic Characteristics of Supercritical Units

Data-Driven Surrogate Model for the Dynamic Characteristics ...

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power System and New Energy Technology Innovation Forum (NPSIF), Boao New power System International Forum -

作者： Shuai Dong An Zheng Junyao Jiang Wei Gao Ming Liu HUANENG YIMIN COAL-POWER CO. LTD. Hulunbuir China State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an China

ISBN: (数字)9798331504557

ISBN: (纸本)9798331504564

Coal-fired power generation units are characterized by large inertia, strong coupling, and high delay, making dynamic characteristic modeling inherently complex and computationally intensive. To address this, this paper utilizes GSE software to explore the dynamic characteristics of supercritical units. Data-driven approaches are then employed to develop surrogate model for these dynamics, comparing neural networks and support vector regression methods in the process. The study indicates that the surrogate model achieves a relative prediction error of less than 1% for live steam temperature, reheater steam outlet temperature, and power output. For live steam pressure and reheater steam outlet pressure, the model maintains a relative error within 10%.

关键词： Support vector machines Technological innovation Temperature Accuracy Computational modeling power system dynamics Neural networks Predictive models Vectors Load modeling

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Recent advancement and future challenges of photothermal catalysis for VOCs elimination:From catalyst design to applications

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Green Energy & Environment 2023年第3期8卷 654-672页

作者： Yang Yang Shenghao Zhao Lifeng Cui Fukun Bi Yining Zhang Ning Liu Yuxin Wang Fudong Liu Chi He Xiaodong Zhang Environment and Low-Carbon Research Center School of Environment and ArchitectureUniversity of Shanghai for Science and TechnologyShanghai 200093China College of Smart Energy Shanghai Jiao Tong UniversityShanghai 200240China Institute of Applied Biotechnology Taizhou Vocation&Technical CollegeTaizhou Zhejiang 318000China Department of Civil Environmentaland Construction EngineeringCatalysis Cluster for Renewable Energy and Chemical Transformations(REACT)NanoScience Technology Center(NSTC)University of Central FloridaOrlandoFL 32816United States State Key Laboratory of Multiphase Flow in Power Engineering School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'anShaanxi 710049China

Photothermal catalysis realizes the synergistic effect of solar energy and thermochemistry,which also has the potential to improve the reaction rate and optimize the *** this review,the research progress of photothermal catalytic removal of volatile organic compounds(VOCs)by nano-catalysts in recent years is systematically ***,the fundamentals of photothermal catalysis and the fabrication of catalysts are described,and the design strategy of optimizing photothermal catalysis performance is ***,the performance for VOC degradation with photothermal catalysis is evaluated and compared for the batch and continuous ***,the catalytic mechanism of VOC oxidation is systematically introduced based on experimental and theoretical ***,the future limitations and challenges have been discussed,and potential research directions and priorities are highlighted.A broad view of recent photothermal catalyst fabrication,applications,challenges,and prospects can be systemically provided by this review.

关键词： Photothermal catalysis VOCs Catalyst design Light-driven thermal catalysis Photothermal synergistic effect

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Co-Optimization for Distributed Multi-Energy System Based on Multi-Objective Robust Stackelberg Game: Energy Management and Multi-Energy Pricing

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SSRN 2024年

作者： Ren, Xiaoxiao Wang, Jinshi Yang, Sifan Zhao, Quanbin Jia, Yifan Ou, Kejie Hu, Guangtao Yan, Junjie State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an710049 China School of Energy Engineering Yulin University Yulin719000 China

To achieve low-carbon operation of distributed multi-energy system (DMES) and enhance its activity in the energy market, this paper proposes a novel multi-objective Stackelberg game model. The DMES operator (DMEO) acts as the leader, guiding users' behavior through DMES optimal scheduling and multi-energy pricing. The optimization objectives include maximizing DMEO revenues, minimizing DMES primary energy consumption and carbon emissions. The users act as followers, adjusting energy demand based on upper-level energy pricing with the objective of maximizing consumption surplus. To achieve the low-carbon and flexible operation of DMES, carbon trading and demand response mechanisms are introduced. The upper-level model is solved using the non-dominated sorting genetic algorithm III (NSGA-III), while the lower-level model is solved by the Gurobi solver. Furthermore, a robust optimization model with adjustable robust measure is established to mitigate the impact of renewable energy uncertainty. Finally, the validity of the proposed model is verified by a data center in Qinghai. Compared with traditional Stackelberg game model, the proposed model reduces DMEO revenue by 0.63% but decreases carbon emissions by 1.64% and energy consumption by 1.59%. Under this optimization framework, the energy efficiency and exergy efficiency of DMES are 0.798 and 0.535, and the share of renewable energy is 34.6%. Besides, increasing renewable energy uncertainty leads to lower DMEO revenue, higher carbon emissions and energy consumption, while significantly reducing energy efficiency and exergy efficiency. The proposed multi-objective Stackelberg game model may provide some references for multi-stage energy system optimization. © 2024, The Authors. All rights reserved.

关键词： Energy utilization

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PLIF thermometry using OH origin from photo dissociation of water 6

PLIF thermometry using OH origin from photo dissociation of ...

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6th International Symposium on Laser Interaction with Matter

作者： Li, Guohua Ye, Jingfeng Zhang, Zhenrong Wang, Sheng Shao, Jun Hu, Zhiyun Wang, Jinhua Huang, Zuohua State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an China State Key Laboratory of Laser Interaction with Matter Northwest Institute of Nuclear Technology Xi’an China Shanghai Jiao Tong University Sichuan Research Institute Chengdu China

ISBN: (纸本)9781510660236

A technique that expands the OH-LIF thermometry range is developed. The PLIF of OH from dissociation of water in gas phase is used for temperature measurement both in flame and room air. The thermometry results from photo-fragmentation laser induced fluorescence(PF-PLIF) at time delay from 200ns to 1ms after dissociation agree well with results from PLIF of OH from burning which are calibrated by CARS thermometry. And the results in room air agree with environment temperature at time delay from 50ns to 0.2ms. These two results validate the PF-PLIF thermometry method both in flame and room temperature, which allowing thermometry at low temperature or non-reaction region. At last the PF-PLIF was applied in a jet flow, and the temperature results from PF-PLIF, PLIF and CARS at different height of jet were compared. © 2022 SPIE.

关键词： Dissociation

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Study on supercritical water regeneration of bio-based activated carbon saturated with acid red G

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Carbon Resources Conversion 2024年

作者： Mu, Yaling Zhuang, Zitong Jiang, Kun Wei, Yimeng Meng, Anjun Jin, Hui State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Shaanxi Xi'an710049 China CNNP CHD Hebei Nuclear Power Co. Ltd. Hebei Cangzhou061000 China

The dye and textile industry commonly employs activated carbon adsorption technology due to its cost-effectiveness and high efficiency. However, disposing of waste-activated carbon has a significant environmental and human health impact, and it's a huge economic waste. This study investigates the kinetic and isothermal adsorption characteristics of Acid Red G dye adsorption by Powdered Activated Carbon derived from coconut shells. To effectively reuse activated carbon and maximise resource conservation, regeneration experiments were carried out using Supercritical Water at 24 MPa and 400 ℃ for 30 min. The experimental results demonstrated that, in comparison with thermal regeneration, supercritical water possesses the benefits of environmental protection, economic efficiency and extensive applicability. This is of considerable importance to the field of research concerning the regeneration of activated carbon. © 2024

关键词： Carbon sequestration

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A Novel Multi-Objective Stackelberg Game Model for Multi-Energy Dynamic Pricing and Flexible Scheduling in Distributed Multi-Energy System

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SSRN 2024年

In the face of global energy and environmental challenges, distributed multi-energy system (DMES) offers a promising solution. To optimize resource allocation and promote energy market development, this paper proposes a novel multi-energy management and pricing framework based on multi-objective Stackelberg game. The DMES operator (DMEO) acts as the leader by optimizing DMES scheduling and pricing to guide user behavior towards revenue, energy consumption, and carbon emissions goals. Users adjust energy demand based on energy pricing to maximize consumption surplus. To achieve the low-carbon and flexible operation of DMES, carbon trading and demand response mechanisms are introduced. The model is solved using NSGA-III and Gurobi solver, with a robust optimization model with adjustable robust measure is established to address renewable energy uncertainty. The validity of the proposed model is verified by a data center in Qinghai. Compared with traditional Stackelberg game model, the proposed model reduces carbon emissions by 1.64% and energy consumption by 1.59%. Under this optimization framework, the exergy efficiency and energy efficiency of DMES are 0.535 and 0.798, and the share of renewable energy is 34.6%. Increased renewable energy uncertainty leads to lower DMEO revenue, higher carbon emissions and energy consumption, while significantly reducing energy and exergy efficiency. © 2024, The Authors. All rights reserved.

关键词： Energy utilization

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Wall temperature calculation and safety analysis for the water wall of 660 MW ultra-supercritical circulating fluidized bed boiler 13

Wall temperature calculation and safety analysis for the wat...

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13th International Conference on Fluidized Bed Technology, CFB 2021

作者： Yang, Dong Liang, Ziyu Dong, Le Zhou, Xihong Li, Juan State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Shaanxi Xi’an710049 China

ISBN: (纸本)9781771368506

Temperature safety analysis was conducted on the smooth tube of the supercritical circulating fluidized bed boiler through experiments, numerical simulation, and hydrodynamic calculation. The numerical simulation results of the inner wall temperature were compared with the results of the experiments and hydrodynamic calculation. Experimental results showed that heat transfer enhancement occurred near a pseudocritical point. Non-uniform circumferential heating weakened the buoyancy effect, which could effectively delay or prevent the occurrence of heat transfer deterioration, and the circumferential distribution of the wall temperature and heat flux was parabolic. The simulated results of the inner wall temperature were in satisfactory agreement with the experimental results. Furthermore, the inner wall temperature values of the hydrodynamic calculation were lower than the experimental values. These findings indicated that the temperature experimental results obtained by non-uniform circumferential heating were conservative. © 2021 CFB 2021 - Proceedings of the 13th International Conference on Fluidized Bed Technology. All rights reserved.

关键词： Heat flux

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Heat and power Load Prediction for Combined Heat and power Station with Different Methods

Heat and Power Load Prediction for Combined Heat and Power S...

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Digital Twins and Parallel Intelligence (DTPI), IEEE International Conference on

作者： Lin Wang Tingting Yu Chen Chen Yaokui Gao Lin Gao Binbin Qiu Ming Liu Xi’an Thermal Power Research Institute Co. Ltd. Xi’an China State Key Laboratory of Multiphase Flow in Power Engineering Xi’an Jiaotong University Xi’an China

ISBN: (数字)9798350349252

ISBN: (纸本)9798350349269

The accurate short-term load prediction is an essential prerequisite for ensuring the reliable and economic operation of combined heat and power stations. In this study, the heat load and power load prediction models of combined heat and power station were developed with long short-term memory (LSTM) and multiple linear regression (MLR), respectively. The preprocessing and correlation analysis of heat and power loads were conducted. The prediction effects of different prediction models were also compared and analyzed. Taking the data of February as an example, the mean absolute percentage error (MAPE) of heat load prediction with LSTM and MLR models are 3.20% and 3.75%, respectively, and the MAPE of power load prediction are 5.59% and 8.76%, respectively. The prediction results show that the performance of the LSTM model is better than that of the MLR model, and the prediction accuracy of the heat load is higher than that of the power load.

关键词： Correlation Accuracy Cogeneration Biological system modeling Linear regression Predictive models Data models Thermal loading Long short term memory Load modeling

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Review, Numerical Validation, and Experiment Verification for Definite Solution Analogy Theory (Dsat) in Thermal-Hydraulic Scaling

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SSRN 2024年

The new generation of reactor technology: Fluoride-Salt-cooled high-Temperature Advanced Reactor (FuSTAR), mainly applied to the steady supply of stable electricity and high-temperature process heat for remote, underground, and arid areas. So far, the design of the heat transport system and Passive Residual Heat Removal System (PRHRS) of FuSTAR has been finished, but the scaling and experiment verification still needs to be carried out. In this study, the Definite Solution Analogy Theory (DSAT) was used for scaling analysis, and the scaling experiment platform of PRHRS was built. DSAT was verified through numerical simulation and experiment results, which can support the design and optimization of the PRHRS. The numerical test results show that the similar distribution of physical fields in dimensionless space on the prototype and experiment is realized under the DSAT framework. The steady-state experiment results show that the prototype of PRHRS can take away more than 1% of the decay heat of the total thermal power and has a margin of about 15% under a stable natural cycle. The maximum deviation between the measured temperature and the calculated value with DSAT is more than 4°C. The transient experiment results show that the maximum deviation of dimensionless solutions is less than 4%, which proves the high accuracy of DSAT and the PRHRS based on this framework can effectively remove the decay heat in the reactor. This work can be used to extend the scaling method of thermal-hydraulic in high dimensional space and transient conditions. © 2024, The Authors. All rights reserved.

关键词： Fluorine compounds

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