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| 1 | Measures against the adverse impact of natural wind on air-cooled condensers in power plant显示文摘The natural wind plays disadvantageous roles in the operation of air-cooled steam condensers in power plant.It is of use to take various measures against the adverse effect of wind for the performance improvement of air-cooled condensers.Based on representative 2×600 MW direct air-cooled power plant,three ways that can arrange and optimize the flow field of cooling air thus enhance the heat transfer of air-cooled condensers were proposed.The physical and mathematical models of air-cooled condensers with various flow leading measures were presented and the flow and temperature fields of cooling air were obtained by CFD simulation.The back pressures of turbine were calculated for different measures on the basis of the heat transfer model of air-cooled condensers.The results show that the performance of air-cooled condensers is improved thus the back pressure of turbine is lowered to some extent by taking measures against the adverse impact of natural wind. | YANG LiJun,DU XiaoZe & YANG YongPing Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education of China,North China Electric Power University,Beijing 102206,China | 2010 | Science China(Technological Sciences)2010，53，5： | 21 |
| 2 | Antibiotic growth promoter olaquindox increases pathogen susceptibility in fish by inducing gut microbiota dysbiosis显示文摘Low dose antibiotics have been used as growth promoters in livestock and fish. The use of antibiotics has been associated with reduced pathogen infections in livestock. In contrast, antibiotic growth promoter has been suspected of leading to disease outbreaks in aquaculture. However, this phenomenon is circumstantial and has not been confirmed in experimental conditions. In this study,we showed that antibiotic olaquindox increased the susceptibility of zebrafish to A. hydrophila infection. Olaquindox led to profound alterations in the intestinal microbiota of zebrafish, with a drastic bloom of Enterobacter and diminishing of Cetobacterium. Moreover, the innate immune responses of zebrafish were compromised by olaquindox(P<0.05). Transfer of microbiota to GF zebrafish indicated that while the immuo-suppression effect of olaquindox is a combined effect mediated by both OLA-altered micro biota and direct action of the antibiotic(P<0.05), the increased pathogen susceptibility was driven by the OLA-altered microbiota and was not dependent on direct antibiotic effect. Taken together, these data indicate that low level of OLA induced gut microbiota dysbiosis in zebrafish, which led to increased pathogen susceptibility. | suxu he quanmin wang shuning li chao ran xiaoze guo zhen zhang zhigang zhou | 2017 | Science China(Life Sciences)2017，60，11： | 10 |
| 3 | Thermo-flow characteristics and air flow field leading of the air-cooled condenser cell in a power plant显示文摘Special A-frame geometry of the air-cooled condenser cell and the complicated flow field at the exit of the axial flow fan bring on the air mal-distribution on the surface of the finned tube bundles and the deteriorated thermo-flow performances of a condenser cell.It is of benefit to the design and operation optimization of the direct dry cooling system in a power plant to investigate the thermo-flow characteristics of the condenser cell and propose the flow leading measures of cooling air.On the basis of the representative configuration of the air-cooled condenser cell in a 600 MW direct dry cooling power plant,the computational models of the air side fluid and heat flows are built,in which the actual fan blade geometric details are considered.Various flow field leading ways of cooling air are presented and the thermo-flow characteristics in the A-frame condenser cell and through the finned tube bundles are compared.Results show that the flow field leading measures can result in the increased volumetric flow rate and heat rejection,thus bringing on the improved performance of the condenser cell.The improvement of thermo-flow performances depends upon the geometric details of the flow guiding device. | ZHANG WanXi YANG LiJun DU XiaoZe YANG YongPing | 2011 | Science China(Technological Sciences)2011，54，9： | 8 |
| 4 | Variations in leaf characteristics of three species of angiosperms with changing of altitude in Qilian Mountains and their inland high-altitude pattern显示文摘In this study,39 leaf samples of three angiosperms(Betula albo-sinensis,tree species;and Caragana jubata and Berberis diaphana,shrub species) were collected in the middle-east parts at 2300–3640 m asl of the Qilian Mountains to study the variations of leaf characteristics of angiosperms with altitude change in inland high-altitude regions of China.Five leaf indexes,viz.epidermal cell density(ED),stomatal density(SD),stomatal index(SI),leaf vein density(VD) and carbon isotopic ratio(δ13C),were analyzed in laboratory.The results show that there are significant or even very significant linear correlations between the five indexes and altitude,of which SD,SI and VD exhibit a negative correlation with altitude,while ED and δ13C exhibit a positive correlation with altitude.Such a correlation assemblage is quite different from the situation in the low-altitude humid environment.Generally,only an assemblage of positive correlations can be observed between the indexes(viz.SD,SI and δ13C,etc.) and the altitude in the low-altitude humid environment,which were caused mainly by the plants' responses to the change of atmospheric CO2 concentration(Cα).However,an assemblage of the negative and positive correlations found here may be attributed mainly to the plants' responses to the change of physiological drought caused by change of low temperature,and here it is preliminarily called the inland high-altitude pattern of plant leaf variations. | WANG XueFang LI RuiYun LI XiaoZe MA FuJun SUN BaiNian WU JingYu WANG YouKui | 2014 | Science China Earth Sciences2014，57，4： | 8 |
| 5 | Numerical investigation on the cluster effect of an array of axial flow fans for air-cooled condensers in a power plant显示文摘The aerodynamic behavior of tens of axial flow fans incorporated with air-cooled condensers in a power plant is different from that of an individual fan.Investigation of the aerodynamic characteristics of axial flow fan array benefits its design optimization and running regulation.Based on a representative 2600 MW direct-dry cooling power plant,the flow rate of each fan and the overall flow rate of the fan array are obtained in the absence of ambient wind and at various wind speeds and directions,using CFD simulation.The cluster factor of each fan and the average cluster factor of the fan array are calculated and analyzed.Results show that the cluster factors are different from each other and that the cluster effect with ambient wind is significantly different from the cluster effect with no wind.The fan at the periphery of the array or upwind of the ambient wind generally has a small cluster factor.The average cluster factor of the array decreases with the increasing wind speeds and also varies widely with wind direction.The cluster effect of the axial flow fan array can be applied to optimize the design and operation of air-cooled condensers in a power plant. | YANG LiJun DU XiaoZe ZHANG Hui YANG YongPing | 2011 | Chinese Science Bulletin2011，56，21： | 6 |
| 6 | Novel Ag nanocrystals based dental resin composites with enhanced mechanical and antibacterial properties显示文摘The aim of this work was to investigate the effect of trace addition of oleic acid coated Ag nanocrystals(Ag NCs) on mechanical and antibacterial properties of dental resin composites.Composites(70 wt%of silica loading) with 25 ppm,50 ppm,75 ppm and 100 ppm(wt) Ag NCs were prepared and the composite without Ag NCs served as a control.The experimental results showed that the addition of Ag NCs significantly improved the strength and modulus of the resin composite without compromising the shade.For the composite with 50 ppm Ag NCs,fiexural strength(140.3 MPa),modulus(13.2 GPa)and compressive strength(347.2 MPa) were increased by 4.1%,22.2%,13.3%,respectively,compared with the control.The antibacterial test demonstrated that trace Ag NCs provided the resin composites with an antibacterial effect.Such strong and antibacterial dental resin composites might be advantageous to prevent secondary caries and be potential for future clinical applications. | Fengwei Liu Ruili Wang Yuyuan Shi Xiaoze Jiang Bin Sun Meifang Zhu | 2013 | Progress in Natural Science:Materials International2013，23，6： | 5 |
| 7 | Discovery of Ordos Cretaceous dune rock and its significance显示文摘It has been found that there existed quite a large quantity of dune rocks in the red sandstone of the Zhidan Group of Ordos Cretaceous strata. Their sedimentary structure, grain size and micro-shape of sand grains show an obvious aeolian features. Both the temporal and spatial distribution and sedimentary characteristics of these dune rocks suggest that probably | Xiaoze Li Guangrong Dong Heling Jin Zhizhu Su Yuanping Wang | 1999 | Chinese Science Bulletin1999，44，22： | 5 |
| 8 | Experimental Investigation on the Hydrodynamic Characteristics of Fluidized Bed Particle Solar Receiver with Gas-Solid Countercurrent Flow Pattern显示文摘To design a particle solar receiver(PSR),a vital energy conversion system,is still a bottleneck for researchers.This study presents a novel PSR based on countercurrent fluidized bed(CCFB)technology,named CCFB receiver.In this design,downward-moving particles are subjected to the action of an up-flow gas to reduce the falling speed and enhance the radial disturbance,and hence increase the residence time of particles and improve the heat transfer.A cold-mold visual experimental setup is established.The influence factors are investigated experimentally,including the superficial gas velocity,solid flux,aeration gas,particle size and transport tube diameter.The results indicate that the maximum solid holdup can exceed 9%or so with fine particles of diameter d_(p)=113.5 μm and a tube diameter of 40 mm.It is proved that the CCFB can operate stably and adjust the solid flux rapidly.The results of this study provide a new structure for PSRs in the concentrated solar power field and could fill the research insufficiency in the gas-solid counterflow field. | JIANG Kaijun WANG Fengli KONG Yanqiang XU Chao DU Xiaoze | 2021 | Journal of Thermal Science2021，30，6： | 4 |
| 9 | Preparation and performance of lipophilic α-zirconium phosphate with high thermal stability and its application in thermal-plastic polymers显示文摘To prepare lipophilic α-zirconium phosphate with high grafting ratio and thermal stability(OZrP-HT) and explore its potential application in thermal-plastic polymers,a novel method was developed by surface lipophilicity enhancement strategy.The commercial a-zirconium phosphate(a-ZrP) was pre-intercalated by n-propylamine(PA) and grafted by silane coupling agents.Then the pre-intercalated PA was removed by heattreatment,and the obtained OZrP-HT was utilized to fabricate the phosphorous-containing polyester(P-co-PET)/OZrP-HT nanocomposites by melt-blending method.The prepared OZrP-HT and P-co-PET/OZrP-HT nanocomposites were characterized by Wide Angle X-ray Diffraction(WAXD),Fourier Transform Infrared Spectroscopy(FTIR),Thermogravimetric Analysis(TGA),Transmission Electron Microscope(TEM),etc.The results show that OZrP-HT with high grafting ratio(13.78 wt%) and thermal stability(T_(onset)= 368℃) was successfully prepared via this novel method and was uniformly intercalated by P-co-PET molecular chains.OZrP-HT had no significant effect on the fiber processability of P-co-PET polymer,and flame retardant properties of(P-co-PET)/OZrP-HT nanocomposites were improved.This method may be suitable for organic modification of general inorganic layered compounds and could extend the potential applications in thermo-plastic polymers. | Ya Du Feng Deng Xiaoze Jiang Huquan Ji Dan Yu Wei Wang Bin Sun Meifang Zhu | 2015 | Progress in Natural Science:Materials International2015，25，5： | 3 |
| 10 | Enhancement of Thermo-Flow Performances by Windbreakers for Two-Tower Indirect Dry Cooling System显示文摘The winds will greatly weaken the cooling performance of indirect dry cooling system with twin towers.The exterior windbreakers are recommended to restrain the wind adverse effects in this paper.The macro heat exchanger model was adopted to simulate the heat exchange between circulating water and ambient air.The performances of natural draft dry cooling system(NDDCS)with and without exterior windbreakers were numerically studied.The pressure,velocity and temperature distribution of cooling air in wind angles of 0°,45°and 90°was obtained and presented.The results show that in all wind directions,the performances for lateral sector of towers with windbreakers are significantly improved,but the low-pressure zone appears unexpectedly for the rear sectors,which reduces the air flow rate.The cooling performances of the twin towers with or without windbreakers decrease at first but then recover with the wind velocity increasing.Besides,the optimal flow and heat transfer performances appear in the wind angle of 0°.The cooling performances can be significantly improved in all three wind directions due to windbreaker configuration. | YAN Jingbo WANG Weijia CHEN Lei YANG Lijun DU Xiaoze | 2020 | Journal of Thermal Science2020，29，3： | 3 |
| 11 | Kinetics for hydrogen production by methanol steam reforming in fluidized bed reactor显示文摘Hydrogen is one of the best energy carriers.Fluidized bed reactor provides a promising approach for hydrogen production. To describe the hydrogen generating rate with methanol steam reforming in fluidized bed reactor quantitatively, dual-rate kinetic models of the reactions with exponent form were developed, including that of steam reforming reaction(SR) and decomposition reaction(DE).The reaction rate per unit mass of catalyst was related to partial pressures of components. The exponentials in kinetic equations were obtained by linear least-squares method based on the experimental data. The variance homogeneity test(F test) shows that the dynamic models are feasible with high accuracy, which can be used to predict the generating rate of hydrogen under different reaction temperatures and feed flow rates in fluidized bed reactor. The SR and DE activation energy obtained indicates that ESR\ EDE, which can explain the previous observation that the CO_2 selectivity decreased with the temperature increase. | Fuxiang Zhang Yingshuang Shi Lijun Yang Xiaoze Du | 2016 | Science Bulletin2016，61，5： | 3 |
| 12 | A review of concentrated photovoltaic-thermal(CPVT) hybrid solar systems with waste heat recovery(WHR)显示文摘In conventional photovoltaic(PV) systems, a large portion of solar energy is dissipated as waste heat since the generating efficiency is usually less than 30%. As the dissipated heat can be recovered for various applications, the wasted heat recovery concentrator PV/thermal(WHR CPVT) hybrid systems have been developed. They can provide both electricity and usable heat by combining thermal systems with concentrator PV(CPV) module, which dramatically improves the overall conversion efficiency of solar energy.This paper systematically and comprehensively reviews the research and development of WHR CPVT systems. WHR CPVT systems with innovative design configurations, different theoretical evaluation models and experimental test processes for several implementations are presented in an integrated manner. We aim to provide a global point of view on the research trends, market potential, technical obstacles, and the future work which is required in the development of WHR CPVT technology. Possibly, it will offer a generic guide to the investigators who are interested in the study of WHR CPVT systems. | Xing Ju Chao Xu Zhirong Liao Xiaoze Du Gaosheng Wei Zhifeng Wang Yongping Yang | 2017 | Science Bulletin2017，62，20： | 3 |
| 13 | Dynamic analysis of a concentrating photovoltaic/concentrating solar power (CPV/CSP) hybrid system显示文摘Concentrating photovoltaic/concentrating solar power(CPV/CSP)systems suffer from varying irradiation and extreme working conditions.In this study,a dynamic physical model is developed for the CPV/CSP hybrid system to analyze the dynamic responses of several key parameters,such as the solar radiation saltation or linear variation to represent the typical weather variations.The results show that the hybrid system could rapidly reach the steady state in less than about 53 s after the solar radiation saltation increases or decreases by 10%.The response time reflects that the thermal hysteresis of the hybrid system is mainly determined by varying the outlet temperature of R134a from the solar thermal receiver.Meanwhile,when the solar radiation changes linearly,a lower gradient is beneficial to remit the thermal hysteresis of the hybrid system and improve the thermal stability,and the parameters could be treated as the steady state values with a gradient of less than 0.2 W m^-2 s^-1.Afterward,the quasi-steady state model was used to analyze the all-day dynamic performance of the hybrid system.It shows that the power output and the flow rate are directly related to the direct normal irradiance(DNI),while the outlet temperature of R134a vapor could be almost constant except for the starting and stopping periods. | HAN Xue XU Chao PAN XinYu JU Xing DU XiaoZe | 2019 | Science China(Technological Sciences)2019，62，11： | 2 |
| 14 | Thermal conductivities study on silica aerogel and its composite insulation materials显示文摘 | Gaosheng Wei Yusong Liu Xinxin Zhang Fan Yu Xiaoze Du | 2011 | International Journal of Heat and Mass Transfer2011，，11： | 2 |
| 15 | Impacts of solar multiple on the performance of direct steam generation solar power tower plant with integrated thermal storage显示文摘太阳多重(SM ) 并且热存储能力是为揭示直接蒸气产生(DSG ) 的表演的二个关键设计参数太阳的力量塔植物。在解决的陆地区域的情况中, SM 和热存储电容能被优化由调整发电产量获得电(LCOE ) 的最小的 levelized 费用。拿双接收装置的 DSG 有 100 MW 在是的 Sevilla 的 e 一个参考盒子,最小的 LCOE 是 21.77 /kWh 有 1.7 的 SM 的 e 和 3 h 的一个热存储能力。除 Sevilla 以外,二个另外的地点也被介绍讨论年度 DNI 的影响。什么时候就稍微与 Sevilla,最小的 LCOE 和圣何塞地点的最佳的 SM 的盒子相比变化,当在 32.8% 的主教地点减少和最佳的 SM 的最小的 LCOE 被归结为 1.3 时。太阳的领域等价物电的尺寸的影响也被学习。最小的 LCOE 与太阳的地的尺寸减少,当最佳的 SM 和热存储能力仍然保持未改变时。另外,在分系统的不同投资的敏感被调查。以最佳的 SM 和热存储能力,他们能与热存储系统的费用减少,但是与发电联合起来的费用增加。 | Yah LUO Xiaoze DU Lijun YANG Chao XU Muhammad AMJAD | 2017 | Frontiers in Energy2017，11，4： | 2 |
| 16 | Transportation characteristics of motor vehicle pollutants near Beijing typical expressway显示文摘As a major source of air pollution in urban areas, the motor vehicle exhaust has attracted more and more attention due to its growing amount and serious harm to human health. It is of benefit to the pollutant control to make clear the transportation characteristics of vehicle exhausts. In this paper, the transportation characteristics of vehicle exhaust pollutants are investigated by means of the on-site measurement based on a typical Beijing expressway-Badaling expressway(G6 state expressway). The concentrations of CO, NO_x, SO_2 and particles near the expressway were obtained, by which the variations of the particle number and mass concentrations, as well as the gas pollutant volume concentrations in the vicinity of the roadways with the distance from the expressway were fitted. The results show that the gas pollutant concentrations and particle concentrations decrease almost exponentially with the distance from the expressway, which is helpful for the air pollutant database establishment and future pollution control in big cities. | LI YanLong ZHANG DaiChao JIN XinMing YANG LiJun DU XiaoZe YANG YongPing | 2016 | Science China(Technological Sciences)2016，59，3： | 2 |
| 17 | IL-17AproducedbybothγδTandTh17cellspromotesrenalfibrosisviaRANTES-mediatedleu-kocyteinfiltrationafterrenalobstruction显示文摘 | PengX XiaoZ ZhangJ etal | 2015 | JPathol2015，235，1： | 1 |
| 18 | , Re- duced order analysis of flow and heat transfer for air- cooled condenser of power generating unit 显示文摘 | DU Xiaoze HU Hemin SHEN Yinqi | 2013 | Ap- plied Thermal Engineering2013，51，12： | 1 |
| 19 | Effect of light expo- sure on sensorial quality, concentrations of bioactive com- pounds and antioxidant capacity of radish microgreens dur- ing low temperature storage 显示文摘 | XIAOZ LESTER G E LUO Y | 2014 | Food Chemistry2014，151，10： | 1 |
| 20 | Influences of Lateral Double-Layered Deflectors on Cooling Performance of Air-Cooled Condenser显示文摘The cooling performance of air-cooled condenser(ACC)is susceptible to adverse impacts of ambient winds.In this work,three kinds of lateral double-layered deflectors installed under the ACC platform are proposed to weaken the unfavorable effects of cross winds.Through CFD simulation methods,the main parameters of thermo-flow performances of a 2×660 MW direct dry cooling system are obtained,by which it can be concluded that the deflectors can effectively reduce the inlet air temperatures while enhance the mass flow rates of upwind fans due to the guiding effect,especially at high wind speeds,while the improvement of cooling capacity of ACCs in the 0°wind direction is weak.The inclined-vertical deflectors are superior to others in performance improvement of ACCs for all cases,which can reduce the turbine back pressure by 12.15%when the wind speed is 12 m/s,so they can be applied to the performance enhancement of ACCs under windy conditions in practical engineering. | HUANG Wenhui HUANG Xianwei YANG Lijun DU Xiaoze | 2021 | Journal of Thermal Science2021，30，6： | 1 |
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