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Chinese Journal of Aeronautics 2024年第6期37卷 410-424页

作者： Qiannan TAO Yanrong WANG Dasheng WEI Shun YANG School of energy and Power Engineering Beihang UniversityBeijing 100191China Jiangxi research institute of Beihang University Nanchang 330096China

Predicting the thickness of Thermally Grown Oxide(TGO)and the residual stresses induced by TGO growth in the Thermal Barrier co.tings(TBCs)is significant work in analyzing the failure of *** practical applications,the operating temperature,oxygen partial pressure,aluminium co.tent in TBCs,and porosity of the topco.t affect the oxidation ***,a novel oxidation rate model is proposed to describe the effect of such *** parameters in the proposed model were fitted with isothermal degradation test data from prior ***,a method for calculating the residual stress in a disk-shaped specimen was developed based on the oxidized growth strain model and the oxidized ***,a variable-temperature oxidation experiment was performed to validate the new oxidation *** average error between the predicted and experimental thicknesses is approximately 10%,and the average error between the residual stresses is 30%.Under the variable-temperature co.dition,the error between the predicted thickness and the average experimental thickness is 3.9%.

关键词： Thermal barrier co.tings Oxidation Gas turbine Residual stresses Sintering

Prediction of favorable geological storage areas based on sedimentary characteristics:A case study on the northeastern Ordos Basin,China

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Energy Geoscience

energy Geoscience 2024年第4期5卷 187-197页

作者： Yue Zhao Qiang Xu Song Du Yang Zhang Tengzhuo Zhang Yinglin Fan Yan Ding Sitong Song Xinxin Feng General Prospecting institute China National Administration of Coal GeologyBeijing100039China China co.l Weikun(Beijing)energy Saving and Environmental Protection technology co. Ltd.Beijing102488China China University of Mining and technology(Beijing) Beijing100083China Shaanxi Tiancheng Petroleum technology co. Ltd.Xi'an710000China

The Ordos Basin is a large cratonic basin with stable deposition in Northwest *** its mostly stable subsidence background and the urgent need for saline water disposal and carbon dioxide storage in the co.l mining and co.l chemical industries,the Ordos Basin has been chosen as a pilot demonstration site for carbon dioxide and saline water storage in ***,few studies have been made to evaluate the sedimentary and sequence stratigraphy characteristics of this region,as well as their influence on carbon dioxide and saline water storage *** address this research gap,we co.ducted a sedimentary study of the Lower Triassic Liujiagou Formation in the northeastern Ordos Basin utilizing the stratigraphy theory,laboratory test analysis,and pilot project demonstration,to evaluate the area's viability for the deep geological storage of gas and liquid *** studied the tectonic setting,petrological features,and sedimentary characteristics of the favorable strata and predicted favorable areas based on sequence stratigraphy *** lithology predominantly co.sists of feldspathic graywacke,with a fine grain size and mostly fine-to-medium-grained *** distribution of thick-grained sandstone and fine-grained sediment was identified by dividing the sequence,and a favorable reservoir-cap assemblage co.figuration was ***'s co.cluded that the Lower Triassic Liujiagou Formation exhibits suitable characteristics for the deep geological storage of carbon dioxide and saline *** study demonstrates the importance of basic theory in guiding practical applications and provides a reference for the scientific selection of favorable areas for deep basin storage.

关键词： Ordos Basin Liujiagou Formation Sedimentary facies Sequence stratigraphy Geological storage

Synergistic extraction of rare earth elements and alumina from co.l fly ash by potassium pyrosulfate

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Journal of Rare Earths 2024年第4期42卷 749-758页

作者： Jingjing Zou Yiping Sun Chunbin Guo Daye Chen Yonghong Song Yongfeng Wu Zhaotianhui Li Department of Environment Science and Engineering Liaoning Technical UniversityFuxin23000China Department of Materials Science and Engineering Liaoning Technical UniversityFuxin123000 China technology research and Development Department Chinese Institute of Coal ScienceBeijing100013China Shenhua Zhungeer energy and Resource co.prehensive Development co. Ltd.Erdos10300China Liaoning Yingguan High-tech Ceramic co. Ltd.Jinzhou121213China

Although co.l fly ash(CFA)co.tains a high co.tent of rare earth elements(REEs),the related extraction methods have limitations because of their low efficiencies,high levels of energy co.sumption,and other *** address these problems,in this study,we examined the co.xtraction of REEs and Al_(2)O_(3)from two types of Al_(2)O_(3)-rich CFA,pulverized CFA(PCFA)and circulating fluidized bed fly ash(CFBFA)using low-temperature calcination in the presence of K_(2)S_(2)O_(7).The total REEs,heavy REEs(HREEs),and light REEs(LREEs)extraction efficiencies were determined using different K_(2)S_(2)O_(7)/Al_(2)O_(3) molar ratios and calcination temperatures and co.related with the Al_(2)O_(3) extraction efficiency using Pearson co.relation co.fficient *** REEs are co.centrated within CFA particles encapsulated in an aluminosilicate glass phase,and the REEs extraction efficiency is related to the form of Al in *** extraction efficiencies of Al_(2)O_(3) and REEs increase as the K_(2)S_(2)O_(7)/Al_(2)O_(3) molar ratio and calcination temperature increase,and the extraction selectivity of the more industrially valuable HREEs from CFBFA is *** high K_(2)S_(2)O_(7)/Al_(2)O_(3) molar ratios,the extraction of REEs from PCFA is more efficient than that from CFBFA with the regeneration of the highly active Al-O-Si bonds in *** Al_(2)O_(3) extraction efficiencies of PCFA as well as CFBFA co.relate strongly with the total REEs,HREEs,and LREEs extraction *** developed extraction technology has the potential to promote CFA valorization and expand REEs resources,thus mitigating the bottlenecks of REEs procurement.

关键词： Rare earths Alumina co.l fly ash Potassium pyrosulfate Calcination Extraction

co.alt-based heterogeneous catalysts for photocatalytic carbon dioxide reduction

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Tungsten 2024年第2期6卷 410-421页

作者： Hong Yuan Jian-Hua Mei Yun-Nan Gong Di-Chang Zhong Tong-Bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

Solar light-driven co.(2)reduction to high value-added chemicals has co.sidered as an outstanding way to solve energy crisis and climate ***,various photocatalysts have been developed to achieve this *** them,co.altbased heterogeneous catalysts have attracted great interest because of their promising performance,product selectivity and ***,we systematically summarize the research progress of various co.alt-based heterogeneous catalysts for the photoreduction of co.(2),such as single-atom co.alt,and co.alt-based oxides,nitrides,sulfi des,phosphides,metal-organic frameworks and co.alent-organic ***,the advantages and structure-activity relationship of these catalysts in photocatalytic co.(2)reduction reaction are ***,the challenges and prospects for co.structing co.altbased heterogeneous catalysts with high effi ciency are highlighted.

关键词： co.alt Heterogeneous catalysts co.(2)reduction Photocatalysis

A review on the chemo-catalytic co.version of cellulose to bio-ethanol

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Green Chemical Engineering 2024年第3期5卷 276-289页

作者： Xiuzheng Zhuang Haiyong Wang Shugen Jiang Xiaohong Hu Tong Su Xinghua Zhang Longlong Ma Key Laboratory of energy Thermal co.version and co.trol of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing210096China Key Laboratory of Renewable energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou510640China Wuzhou Refrigeration Group co.Ltd. Nanjing211100China

While the industry has produced sugar-derived ethanol from the co.ventional method of fermentation for hundreds of years,other effective routes involving the direct transformation of carbohydrates still remain extremely *** recently,an innovative chemo-catalytic method driven by the aqueous-phase catalysis was created for the synthesis of cellulosic ethanol,making a great breakthrough in the co.mon ways as it can theoretically utilize all of the carbon atoms in sugars with faster kinetics;up to now,results from the relevant studies have been accumulated to a certain extent,but the periodic co.clusions in this field are unfortunately *** this reason,this work tries to offer an overview of the cellulosic ethanol produced by chemo-catalytic routes,highlighting the present knowledge in relation to the technical efficiency,catalytic mechanisms as well as practical *** first,the advanced progress on the increasing efficiency from a varied type of catalytic systems are extensively discussed,which involves the specific functions of hybrid co.ponents from different strategies;meanwhile,the general influences of processing co.ditions,such as the hydrothermal severity and aqueous environments,are also ***,possible mechanisms behind the chemo-catalytic processes are widely elaborated by analyzing a number of experimental cases associated with the reaction network and its kinetic *** that,the actual effects of this technique on the real biomass are co.lected to identify the positive/negative interactions between multiple co.ponents,together with the potential solutions on the semi-co.tinuous processes of pilot scale *** techno-eco.omic analysis(TEA)is also calculated and co.pared with other similar methods,such as fermentation and ***,several proposals aimed at upgrading the whole chain of chemo-catalytic processes are clearly provided,which may function as a guideline for future studies on the pr

关键词： Cellulosic ethanol Chemo-catalytic method Influencing factors Catalytic mechanism Techno-eco.omic analysis

Two-Stage Optimal Scheduling of co.munity Integrated energy System

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energy Engineering 2024年第2期121卷 405-424页

作者： Ming Li Rifucairen Fu Tuerhong Yaxiaer Yunping Zheng Abiao Huang Ronghui Liu Shunfu Lin new Power System technology research institute The Electric Power Research Institute of State Grid Xinjiang Electric Power Co.Ltd.Urumqi830000China The co.lege of Electrical Engineering Shanghai University of Electric PowerShanghai200090China

From the perspective of a co.munity energy operator,a two-stage optimal scheduling model of a co.munity integrated energy system is proposed by integrating information on co.trollable *** day-ahead scheduling analyzes whether various co.trollable loads participate in the optimization and investigates the impact of their responses on the operating eco.omy of the co.munity integrated energy system(IES)before and after;the intra-day scheduling proposes a two-stage rolling optimization model based on the day-ahead scheduling scheme,taking into acco.nt the fluctuation of wind turbine output and load within a short period of time and acco.ding to the different response rates of heat and co.ling power,and solves the adjusted output of each co.trollable *** simulation results show that the optimal scheduling of co.trollable loads effectively reduces the co.prehensive operating co.ts of co.munity IES;the two-stage optimal scheduling model can meet the energy demand of customers while effectively and timely suppressing the random fluctuations on both sides of the source and load during the intra-day stage,realizing the eco.omic and smooth operation of IES.

关键词： Integrated energy system two-stage optimal scheduling co.trollable loads rolling optimization

Key technology and application of AB_(2) hydrogen storage alloy in fuel cell hydrogen supply system

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Materials Reports(energy) 2024年第1期4卷 113-122页

作者： Ming Yao Jianguang Yuan Bao Zhang Youhua Yan Shaoxiong Zhou Ying Wu School of energy Power and Machinery Engineering North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China institute of energy Power Innovation North China Electric Power UniversityNo.2 BeinongluChangping DistrictBeijing 102206China Jiangsu JITRI Advanced energy&Materials research institute co. LtdNo.5 ChongyinanluXinbei DistrictChangzhou 213000China

At present,there is limited research on the application of fuel cell power generation system technology using solid hydrogen storage materials,especially in hydrogen-assisted *** the disadvantages of low hydrogen storage capacity and poor kinetics of hydrogen storage materials,our primary focus is to achieve smooth hydrogen ab-/desorption over a wide temperature range to meet the requirements of fuel cells and their integrated power generation *** this paper,the Ti_(0.9)Zr_(0.1)Mn_(1.45)V_(0.4)Fe_(0.15) hydrogen storage alloy was successfully prepared by arc *** maximum hydrogen storage capacity reaches 1.89 wt% at 318 *** alloy has the capability to absorb 90% of hydrogen storage capacity within 50 s at 7 MPa and release 90% of hydrogen within 220 *** Multiphysics 6.0 software was used to simulate the hydrogen ab-/desorption processes of the *** flow rate of co.ling water during hydrogen absorption varied in a gradient of(0.02 t x)m s^(-1)(x=0,0.02,0.04,0.06,0.08,0.1,0.12).co.ling water flow rate is positively co.related with the hydrogen absorption rate but negatively co.related with the *** the co.ling rate is 0.06 m s^(-1),both simulation and experimentation have shown that the hydrogen storage tank is capable of steady hydrogen desorption for over 6 h at a flow rate of 2 L min^(-1).Based on the above co.clusions,we have successfully developed a hydrogen-assisted two-wheeler with a range of 80 km and achieved regional demonstration operations in Changzhou and *** paper highlights the achievements of our team in the technological development of fuel cell power generation systems using solid hydrogen storage materials as hydrogen storage carriers and their application in twowheelers in recent years.

关键词： AB_(2)hydrogen storage alloy Hydrogen storage tanks Simulation Hydrogen-electric co.pling system Power-assisted two-wheelers

A Distributed Photovoltaics Ordering Grid-co.nected Method for Analyzing Voltage Impact in Radial Distribution Networks

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energy Engineering 2024年第10期121卷 2937-2959页

作者： Cuiping Li Kunqi Gao Can Chen Junhui Li Xiaoxiao Wang Yinchi Shao Xingxu Zhu Key Laboratory of Modern Power System Simulation and co.trol&Renewable energy technology Ministry of Education(Northeast Electric Power University)Jilin132012China State Grid Jibei Electric Power co. Ltd.Electric Power Research InstituteBeijing100045China

In recent years,distributed photovoltaics(DPV)has ushered in a good development situation due to the advantages of pollution-free power generation,full utilization of the ground or roof of the installation site,and balancing a large number of loads ***,under the background of a large-scale DPV grid-co.nected to the co.nty distribution network,an effective analysis method is needed to analyze its impact on the voltage of the distribution network in the early development stage of ***,a DPV orderly grid-co.nected method based on photovoltaics grid-co.nected order degree(PGOD)is *** method aims to orderly analyze the change of voltage in the distribution network when large-scale DPV will be ***,based on the voltagemagnitude sensitivity(VMS)index of the photovoltaics permitted grid-co.nected node and the acceptance of grid-co.nected node(AoGCN)index of other nodes in the network,thePGODindex is co.structed to determine the photovoltaics permitted grid-co.nected node of the current photovoltaics grid-co.nected state ***,a photovoltaics orderly grid-co.nected model with a co.tinuous updating state is co.structed to obtain an orderly DPV grid-co.nected *** simulation results illustrate that the photovoltaics grid-co.nected order determined by this method based on PGOD can effectively analyze the voltage impact of large-scale photovoltaics grid-co.nected,and explore the internal factors and characteristics of the impact.

关键词： Radial distribution network distributed photovoltaics photovoltaics grid-co.nected order degree electrical distance photovoltaics action area

Torque Limit-based Inertial co.trol Method Based on Delayed Support for Primary Frequency co.trol of Wind Turbines

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Journal of Modern Power Systems and Clean energy 2024年第2期12卷 561-570页

作者： Wei Gu Zaiyu Chen Qun Li Minghui Yin Qiang Li Yun Zou School of Automation Nanjing University of Science and TechnologyNanjing 210094China State Grid Jiangsu Electric Power co. Ltd.Research InstituteNanjing 211103China

To avoid the seco.dary frequency dip caused by the steep drop of the electrical power of wind turbines(WTs)at the end of frequency support stage,the torque limit-based iner-tial co.trol(TLIC)method sets the power reference as a linear function of rotor speed,rather than the step form for the step-wise inertial ***,the co.pensation effect on the frequency nadir(FN)caused by the load surge is weakened as the TLIC power is no longer in the step ***,the maximum point of the frequency response co.ponent(FRC)co.tributed by TLIC occurs earlier than the minimum point of FRC co.responding to the load surge,so that the FN cannot be adequately ***,this paper first investigates the relation between the peak and nadir times of FRCs stimulated by the TLIC and load *** this basis,with the co.pensation principle of matching the peak and nadir times of FRCs,the improved TLIC method based on delayed support is ***,the effectiveness of the proposed method is validated via the experiments on the test bench of wind-integrated power system.

关键词： Wind turbine frequency response co.ponent torque limit inertial co.trol delayed support

Study of poly-disperse aerosols deposition in turbulent flow with different Reynolds numbers

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Particuology 2024年第6期89卷 32-43页

作者： Zhichao Gao Yongzheng Chen Dandi Zhang Peng Chen Lili Tong Xuewu Cao School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China China Nuclear Power technology research institute co. Ltd.Shenzhen518000China

The turbulent deposition mechanism is one of the main mechanisms of aerosol deposition in nuclear power plant *** experimental study of poly-disperse aerosol deposition in a horizontal tube is co.ducted,where the nominal Reynolds number(Re)is in a range of 3600–200,*** aerosol deposition velocity first increases and then decreases with the increase of Res,and at high Re,particle rebound occurs during aerosol deposition in the *** the Re is low,the aerosol deposition velocity increases with the increase of aerosol *** the Re is greater than 60,000,the deposition velocity first increases and then decreases with the increase of aerosol diameter due to particle surface rebound.A new aerosol deposition model has been developed by establishing the energy co.servation equation of the rebounded particles in the visco.s *** calculated results of the new model are in good agreement with these experimental results,and the error between the aerosol deposition velocity calculated by the model and experimental results is between−60%and 150%.

关键词： Aerosol Turbulent deposition Rebound High Reynolds number